CN103643625B - A kind of steel truss-concrete slab composite beam based on shear connections structure - Google Patents
A kind of steel truss-concrete slab composite beam based on shear connections structure Download PDFInfo
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- CN103643625B CN103643625B CN201310744155.1A CN201310744155A CN103643625B CN 103643625 B CN103643625 B CN 103643625B CN 201310744155 A CN201310744155 A CN 201310744155A CN 103643625 B CN103643625 B CN 103643625B
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Abstract
The invention discloses a kind of steel truss-concrete slab composite beam based on shear connections structure, the concrete slab comprising steel truss and be laid in directly over steel truss; Steel truss comprises one or more steel truss unit; Steel truss unit is the inverted triangular truss beam be made up of twice upper chord, one lower chord and left and right two row diagonal web member, is connected between twice upper chord by the horizontal connection structure that winds up; Upper chord comprises horizontal steel plate one and multiple vertical open pore steel plate one; The horizontal connection structure that winds up comprises multiple tracks and to wind up horizontal connector, and the horizontal connector that winds up comprises horizontal steel plate two and multiple vertical open pore steel plate two; All upper chords in steel truss form beam string structure in lattice with the horizontal connection structure that winds up.Structure of the present invention is simple, easy construction, connection is reliable and good mechanical performance, result of use are good, effectively can solve the defects such as the shear connector connecting elements quantity that existing steel truss-Concrete Composite Beam exists is many, construction is inconvenient, efficiency of construction is lower.
Description
Technical field
The invention belongs to bridge construction field of engineering technology, especially relate to a kind of steel truss-concrete slab composite beam based on shear connections structure.
Background technology
Steel truss-concrete slab composite beam is the jointly stressed a kind of new composite structure of concrete slab and steel truss, it mainly through arranging shear connector (as peg, channel-section steel, curved muscle etc.) between steel truss girder and concrete frange plate, both opposings starting and Relative sliding at interface place, makes it into as a whole and co-operation.Steel truss-concrete slab composite beam has the strong point of steel, concrete bi-material concurrently, have the following advantages compared with steel truss girder or reinforced concrete beam: the first, concrete slab plays bridge deck simultaneously, main truss is flat indulges multiple actions such as joining, subparticipation main truss is cut, improve main truss force-bearing situation, improve main truss rigidity simultaneously, reduce purlin high, save steel, improve road surface running vehicle condition and reduce construction costs; The second, concrete slab not only bears, transmits bridge floor load, and form stable space structures with steel truss, make the horizontal bending rigidity of bridge, torsional rigidity larger, be conducive to reducing sectional dimension of members and saving steel, reduce superstructure deadweight, improve Horizontal Force of Bridge Substructure; Three, the stability of steel truss-concrete slab composite beam, globality and anti-seismic performance are good, can also reduce noise, reduce impact coefficient; Four, in the construction stage, girder truss has larger rigidity, can fragmented transport, on-site consolidation; In operational phase, various pipeline can be walked in girder truss web member, and improves the utilization rate of the interior space.
Steel truss-concrete slab composite beam develops to some extent from the sixties in last century.The steel truss-concrete slab composite beam of early stage construction is the steel bridge deck of putting more energy in length and breadth in upper and lower string layout.Within 1962, Germany has built the long metal bridge of First steel Plate-truss Composite Structure road bridge-Fu Erda in the world.After this, because of superior functions such as its rigidity are large, building height is low, good integrity, noise are little and power performance is good, extensively adopt in the multiple type of bridge in Europe and Japan and other countries and area.But China is little to the application study of this structure, and in 2000, the Construction of Wuhu Changjiang River Bridge of the main span 312m that China builds up was the case history that China adopts steel truss and concrete composite structure structure first.Practice shows, it has significant technical economic benefit and social benefit, and along with the construction energetically of the speed-raising of China existing line and high ferro, such bridge type will obtain applying more and more widely, is one of main development direction of following structural system.
Steel truss-concrete slab composite beam, under load action, can produce the changing of the relative positions between reinforced concrete bridge deck and Steel Truss Beam.In order to ensure armored concrete slab and the common stressed formation compound beam of Steel Truss Beam, shear connector must be set between the two and make not produce the relative changing of the relative positions between armored concrete slab with Steel Truss Beam, transmit the changing of the relative positions shearing in BENDING PROCESS.Shear connector is divided into rigidity, flexibility and weldering nail three kinds of forms.Wherein, rigidity shear connector generally adopts angle steel or channel-section steel, is the shear connector of early application, seldom uses at present; Flexible shear connector adopts diagonal reinforcement or spiral reinforcement, also can Transfer of Shear under operation load action, but rigidity is less; The major part screw of weldering nail for being welded in girder steel wing plate, rigidity is between rigidity and tenderness shear connector, because solder technology is ripe, construction is simple, reliably stressed, concrete stress is concentrated less, is the type of attachment that steel truss-concrete slab composite beam built at present often adopts, but its Problems existing mainly comprises following aspect: the first, connector quantity is many, increase integral bridge cost; The second, on-the-spot fastening work brings construction operation under a large amount of bridge, work progress difficulty, inefficiency, and less economical; Three, need perforate on girder steel, weaken cross section, perforate workload is larger.
PBL shear connector (i.e. open pore steel plate connector) is a kind of novel type of attachment, and its mechanism of action is: the first, rely on the anti-shear concrete in hole to be used for bearing the separating force of shearing along steel plate longitudinal direction and Steel concrete; The second, steel plate is relied on to be used for bearing transverse shearing force; Three, perforated rebar in institute's hole-opening, also play certain shearing resistance effect, thus PBL shear connector shows good mechanical property and anti-fatigue performance in actual applications, but China is still shallow to the research of PBL shear connector at present, form is less, and application also needs to be expanded.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of steel truss-concrete slab composite beam based on shear connections structure is provided, its structure is simple, easy construction, connection is reliable and good mechanical performance, result of use are good, effectively can solve the defects such as the shear connector connecting elements quantity that existing steel truss-Concrete Composite Beam exists is many, construction is inconvenient, efficiency of construction is lower.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of steel truss-concrete slab composite beam based on shear connections structure, it is characterized in that: comprise in vertical bridge to the steel truss laid and the concrete slab be laid in directly over described steel truss, described concrete slab is that vertical bridge is to laying; Described steel truss comprise one or more in vertical bridge to the steel truss unit laid, multiple described steel truss unit is laid at grade from left to right along direction across bridge, the structure of multiple described steel truss unit all identical with size and its be fastenedly connected and be integrated;
Described steel truss unit is for being arranged the inverted triangular truss beam being supported in the diagonal web member described in lower chord and twice between upper chord respectively and forming by twice upper chord, one lower chord and left and right two, often arrange described diagonal web member and include the many diagonal web members laid from front to back, described upper chord and lower chord all in vertical bridge to laying, described in twice, upper chord symmetry is laid in the oblique upper, the left and right sides of described lower chord, and upper chord described in described lower chord and twice arranges described diagonal web member by two and connects as one; Connected by the horizontal connection structure that winds up between upper chord described in twice, and upper chord described in twice is all laid on same plane with the horizontal connection structure that winds up; Adjacent two the described steel truss units shareds in left and right one upper chord in multiple described steel truss unit, is connected by the horizontal connection structure of lower edge between the lower chord of adjacent two the described steel truss unit in left and right; Described upper chord comprises horizontal steel plate one and multiple vertical open pore steel plate one be all laid on described horizontal steel plate one, described horizontal steel plate one and multiple described vertical open pore steel plate one all in vertical bridge to laying; It is the horizontal connector that winds up that direction across bridge is laid that the described horizontal connection structure that winds up comprises multiple tracks, the described horizontal connector that winds up comprises horizontal steel plate two and multiple vertical open pore steel plate two be all laid on described horizontal steel plate two, and described horizontal steel plate two and multiple described vertical open pore steel plate two are all laid in direction across bridge;
All upper chords in described steel truss and the horizontal connection structure that winds up between adjacent two upper chords form beam string structure in lattice, described concrete slab to wind up structural reinforced concrete structure in described lattice for building, cage of reinforcement in described concrete slab comprises the longitudinal reinforcement one that multiple tracks is laid along direction across bridge along vertical bridge side by side to the hoop stirrup two carrying out from front to back laying and multiple tracks, described in multiple tracks, hoop stirrup two is all laid on same plane, described in multiple tracks, longitudinal reinforcement one is all laid on same plane, each described vertical open pore steel plate one all has a row respectively for the hole that hoop stirrup two described in multiple tracks passes, each described vertical open pore steel plate two has a row respectively for the hole that longitudinal reinforcement one described in multiple tracks passes, the shear connections that described vertical open pore steel plate one in described lattice in beam string structure, described vertical open pore steel plate two, longitudinal reinforcement one form for being connected described steel truss and concrete slab with hoop stirrup two constructs.
Above-mentioned a kind of steel truss-concrete slab composite beam based on shear connections structure, it is characterized in that: the symmetrical laying of the two described diagonal web members of row in described steel truss unit, the equal indention of many described diagonal web members often arranged in described diagonal web member is laid, upper chord described in twice is provided with multiple upper tie point connected with diagonal web member upper end respectively in described steel truss unit, the symmetrical laying of multiple described upper tie point set on upper chord described in twice and its composition is multipair respectively for the upper tie point that the horizontal connector that winds up described in multiple tracks connects, wind up described in the multiple tracks two ends of horizontal connector are connected on multipair described upper tie point respectively, the lower chord of adjacent two the described steel truss unit in left and right is lay the adjacent twice lower chord in left and right at grade, lower chord described in the horizontal connection structure of lower edge twice adjacent with left and right to be laid in same level and it to comprise multiple tracks be the lower edge transverse direction connector that direction across bridge is laid, lower chord described in the adjacent twice in left and right is provided with multiple lower tie point connected with diagonal web member lower end respectively, the symmetrical laying of multiple described lower tie point set on lower chord described in the adjacent twice in left and right and its composition is multipair respectively for the lower tie point that the horizontal connector of lower edge described in multiple tracks connects, the two ends of the horizontal connector of lower edge described in multiple tracks are connected on multipair described lower tie point respectively.
Above-mentioned a kind of steel truss-concrete slab composite beam based on shear connections structure, it is characterized in that: respectively wind up in described steel truss the unit horizontal steel plate two of horizontal connector and the horizontal steel plate one of each upper chord are all laid on same plane, and the horizontal steel plate one of upper chord described in adjacent twice is fastenedly connected by the horizontal steel plate two of the horizontal connector that respectively winds up in the horizontal connection structure that winds up and is integrated.
Above-mentioned a kind of steel truss-concrete slab composite beam based on shear connections structure, is characterized in that: described lower chord is encased structures; Described lower chord comprises outer steel pipe one and builds the concrete structure one in described outer steel pipe one, the inside wall of described outer steel pipe one is laid with multiple tracks stiffening rib one, described in multiple tracks, stiffening rib one is PBL stiffening rib, on the inside wall that stiffening rib one described in multiple tracks is all weldingly fixed on described outer steel pipe one and its all lay along the central axial direction of described outer steel pipe one.
Above-mentioned a kind of steel truss-concrete slab composite beam based on shear connections structure, it is characterized in that: described steel truss unit also comprises the support type web member that many groups are positioned at bridge substructure supporting place, often organize described support type web member and include the symmetrical laying in two, left and right and the support type web member be laid on same vertical plane, described support type web member is encased structures and its inside is laid with multiple tracks stiffening rib three; The two described support type web members often organized in described support type web member to be laid in described in twice between upper chord and lower chord respectively; Described bridge substructure is bridge pier or abutment.
Above-mentioned a kind of steel truss-concrete slab composite beam based on shear connections structure, is characterized in that: in described upper chord, the quantity of included vertical open pore steel plate one is three, and three described vertical open pore steel plates one are in evenly laying; The described multiple described vertical open pore steel plate two winded up in horizontal connector is in evenly laying; Being positioned at the horizontal connector that to wind up described in supporting place of described bridge substructure in the described horizontal connection structure that winds up is reinforced horizontal connector, and in described reinforced horizontal connector, the quantity of included vertical open pore steel plate two is 6 ~ 8; In the described horizontal connection structure that winds up except described reinforced horizontal connector described in the horizontal connector that winds up be the horizontal connector of plain edition, in the horizontal connector of described plain edition, the quantity of included vertical open pore steel plate two is three; The width of horizontal steel plate two described in described reinforced horizontal connector is greater than the width of horizontal steel plate two described in the horizontal connector of described plain edition.
Above-mentioned a kind of steel truss-concrete slab composite beam based on shear connections structure, it is characterized in that: in described lattice, in beam string structure, the upper chord of adjacent two the described steel truss units shareds in left and right is common type upper chord, and the upper chord in described lattice in beam string structure except described common type upper chord is plain edition upper chord; Spacing in described common type upper chord between adjacent two described vertical open pore steel plates one is greater than the spacing in described plain edition upper chord between adjacent two described vertical open pore steel plates one.
Above-mentioned a kind of steel truss-concrete slab composite beam based on shear connections structure, it is characterized in that: described cage of reinforcement also comprise described cage of reinforcement also comprise multiple tracks along vertical bridge to the hoop stirrup one carrying out from front to back laying and multiple tracks in vertical bridge to the longitudinal reinforcement two laid, hoop stirrup one described in multiple tracks is all laid on same plane and it is all laid in direction across bridge; In described lattice, the vertical open pore steel plate one of beam string structure meta in the leftmost side is the vertical open pore steel plate one in left side, and in described lattice, the vertical open pore steel plate one of beam string structure meta in the rightmost side is the vertical open pore steel plate one in right side; Described hoop stirrup one is the U-stirrups of bottom opening, the two ends of described hoop stirrup one are weldingly fixed on the vertical open pore steel plate one of the vertical open pore steel plate in described left side one and described right side, above the horizontal connector that winds up described in described hoop stirrup one is positioned at respectively; Described hoop stirrup two is for remaining silent stirrup and it is laid in the periphery of longitudinal reinforcement two described in longitudinal reinforcement one described in multiple tracks and multiple tracks, and described in longitudinal reinforcement one described in per pass and per pass, longitudinal reinforcement two is all welded and fixed with hoop stirrup two described in multiple tracks and is integrated; Longitudinal reinforcement two described in multiple tracks is laid in plate face and the edge of a wing place of concrete slab respectively, and longitudinal reinforcement two described in per pass is all welded and fixed with hoop stirrup one described in multiple tracks and is integrated.
Above-mentioned a kind of steel truss-concrete slab composite beam based on shear connections structure, is characterized in that: in described lattice, vertical open pore steel plate one described in beam string structure is all identical with the vertical height of described vertical open pore steel plate two; Multiple described vertical open pore steel plate one in upper chord described in per pass is all welded as a whole with each vertical open pore steel plate two in connector horizontal described in multiple tracks is fastening, and multiple described vertical open pore steel plate one is in elongated laying; The hole that described vertical open pore steel plate one and described vertical open pore steel plate two are opened is nose circle shape hole, and described vertical open pore steel plate one is all identical with the size of institute's hole-opening on described vertical open pore steel plate two and it is all in evenly laying.
The present invention compared with prior art has the following advantages:
1, simple, the reasonable in design and easy construction of structure, input cost is lower.
2, stress performance is excellent, and the mode that in the lattice that upper chord and the lateral connection bar that winds up form, beam string structure adopts open pore steel plate to wear tendon is resisted the shearing between bridge construction and started power.
3, processing and fabricating is easy, can realize factorial praluction, welding and perforate are convenient.
4, form of structure is simple, and strong adaptability, the hole-opening of open pore steel plate institute is nose circle shape, more easily adapts to the hoop of various reinforcing bar in concrete, bends up layout.
5, result of use is good, adopts open pore steel plate, concrete tenon and the perforated rebar bundle be fastened on horizontal steel plate that bottom load-carrying members (i.e. steel truss) and concrete slab are connected to become entirety, improves structural integrity; Body structure surface (specifically concrete slab) can asphalt pave-load layer, and the effect of common opposing external load, improves the road-ability of bridge, strengthen the shear behavior of bridge.
6, economic benefit and social benefit high, open pore steel plate is both as shear connector, it is again a part for steel truss upper chord, design ingenious, reasonable stress, and steel utilization ratio is high, adopts open pore steel plate as connector, avoid the bolt connection piece that usage quantity is various, mounting cost is high, economy is better.Thus, the present invention adopt technical scheme to utilize the open pore steel plate in steel truss upper chord and lateral connection system to form shear connections dexterously to construct, bear the shearing in compound beam between steel truss and concrete slab and start power, avoiding bolt loaded down with trivial details in a large number to connect operation.
7, applied widely, the present invention also can promote and be applicable to steel case or steel reinforced concrete bondbeam.
In sum, structure of the present invention is simple, easy construction, stressed clear and definite and connect safe and reliable, result of use good, while widening PBL shear connector structure form and application, effectively can also solve the defects such as the shear connector connecting elements quantity that existing steel truss-Concrete Composite Beam exists is many, construction is inconvenient, efficiency of construction is lower, effectively can strengthen the combined effect in conjunction with joist steel purlin and concrete slab.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation arranging transverse connection position in the embodiment of the present invention 1.
Fig. 2 is the structural representation not arranging transverse connection position in the embodiment of the present invention 1.
Fig. 3 is the structural representation of steel truss unit in the embodiment of the present invention 1.
Fig. 3-1 is the left view of Fig. 3.
Fig. 4 is the top view of Fig. 3.
Fig. 4-1 is the structural representation of lower chord of the present invention.
Fig. 5 is the connection status schematic diagram between transverse connection of the present invention and upper chord.
Fig. 6 is the structural representation arranging transverse connection position concrete slab in the embodiment of the present invention 1.
Fig. 7 is the structural representation not arranging transverse connection position concrete slab in the embodiment of the present invention 1.
Fig. 8 is the structural representation of the vertical open pore steel plate two of the present invention.
Fig. 9-1 is the structural representation of longitudinal reinforcement one of the present invention.
Fig. 9-2 is the structural representation of hoop stirrup one of the present invention.
Fig. 9-3 is the structural representation of hoop stirrup two of the present invention.
Fig. 9-4 is the structural representation of hoop lacing wire of the present invention.
Fig. 9-5 is the structural representation of the vertical lacing wire of the present invention.
Figure 10 is the side portion structure schematic diagram of concrete slab of the present invention.
Figure 11 is the upward view of Figure 10.
Figure 12 is the structural representation of steel truss in the embodiment of the present invention 2.
Figure 13 is the installation position schematic diagram of bridge pier supporting place support type web member of the present invention.
Figure 14 is the installation position schematic diagram of abutment supporting place support type web member of the present invention.
Description of reference numerals:
1-1-upper chord; 1-2-lower chord; 1-3-diagonal web member;
1-4-wind up horizontal connection structure; The horizontal connection structure of 1-5-lower edge; 1-6-support type web member;
2-concrete slab; 3-1-vertical open pore steel plate one; 3-2-vertical open pore steel plate two;
4-1-longitudinal reinforcement one; 4-2-longitudinal reinforcement two; 4-3-hoop stirrup one;
4-4-hoop stirrup two; 4-5-vertical lacing wire; 4-6-hoop lacing wire;
5-1-outer steel pipe one; 5-2-stiffening rib one; 6-1-horizontal steel plate one;
6-2-horizontal steel plate two.
Detailed description of the invention
Embodiment 1
As shown in Figure 1 and Figure 2, the present invention includes in vertical bridge to the steel truss laid and the concrete slab 2 be laid in directly over described steel truss, described concrete slab 2 is that vertical bridge is to laying.Described steel truss comprise one or more in vertical bridge to the steel truss unit laid, multiple described steel truss unit is laid at grade from left to right along direction across bridge, the structure of multiple described steel truss unit all identical with size and its be fastenedly connected and be integrated.
In the present embodiment, in described steel truss, the quantity of included steel truss unit is one.
Composition graphs 3, Fig. 3-1 and Fig. 4, described steel truss unit is by twice upper chord 1-1, one lower chord 1-2 and left and right two arrange the inverted triangular truss beam being supported in the diagonal web member 1-3 described in lower chord 1-2 and twice between upper chord 1-1 respectively and forming, often arrange described diagonal web member 1-3 and include the many diagonal web member 1-3 laid from front to back, described upper chord 1-1 and lower chord 1-2 all in vertical bridge to laying, described in twice, upper chord 1-1 symmetry is laid in the oblique upper, the left and right sides of described lower chord 1-2, upper chord 1-1 described in described lower chord 1-2 and twice arranges described diagonal web member 1-3 by two and connects as one.Connected by the horizontal connection structure 1-4 that winds up between upper chord 1-1 described in twice, and upper chord 1-1 described in twice is all laid on same plane with the horizontal connection structure 1-4 that winds up.Adjacent two the described steel truss units shareds in left and right one upper chord 1-1 in multiple described steel truss unit, is connected by the horizontal connection structure 1-5 of lower edge between the lower chord 1-2 of adjacent two the described steel truss unit in left and right.Described upper chord 1-1 comprise horizontal steel plate one 6-1 and multiple vertical open pore steel plate one 3-1 be all laid on described horizontal steel plate one 6-1, described horizontal steel plate one 6-1 and multiple described vertical open pore steel plate one 3-1 all in vertical bridge to laying.It is the horizontal connector that winds up that direction across bridge is laid that the described horizontal connection structure 1-4 that winds up comprises multiple tracks, the described horizontal connector that winds up comprises horizontal steel plate two 6-2 and multiple vertical open pore steel plate two 3-2 be all laid on described horizontal steel plate two 6-2, described horizontal steel plate two 6-2 and multiple described vertical open pore steel plate two 3-2 and all lays in direction across bridge.
In the present embodiment, multiple described vertical open pore steel plate two 3-2 is all laid on same plane and length direction along steel truss unit is laid from front to back, and the structure of multiple described vertical open pore steel plate two 3-2 is all identical with size.All vertical open pore steel plate one 3-1 in described steel truss is all laid on same plane, and the structure of all vertical open pore steel plate one 3-1 is all identical with size.
In the present embodiment, multiple described steel truss unit is all laid in same level, the upper chord 1-1 in each described steel truss unit and lower chord 1-2 all in level to laying.
All upper chord 1-1 in described steel truss and the horizontal connection structure 1-4 that winds up between adjacent two upper chord 1-1 form beam string structure in lattice.As Fig. 6, Fig. 7, shown in Fig. 9-1 and Fig. 9-3, described concrete slab 2 to wind up structural reinforced concrete structure in described lattice for building, cage of reinforcement in described concrete slab 2 comprises longitudinal reinforcement one 4-1 that multiple tracks is laid along direction across bridge along vertical bridge side by side to hoop stirrup two 4-4 carrying out from front to back laying and multiple tracks, described in multiple tracks, hoop stirrup two 4-4 is all laid on same plane, described in multiple tracks, longitudinal reinforcement one 4-1 is all laid on same plane, each described vertical open pore steel plate one 3-1 all has a row respectively for the hole that hoop stirrup two 4-4 described in multiple tracks passes, each described vertical open pore steel plate two 3-2 has a row respectively for the hole that longitudinal reinforcement one 4-1 described in multiple tracks passes, described vertical open pore steel plate one 3-1 in described lattice in beam string structure, described vertical open pore steel plate two 3-2, longitudinal reinforcement one 4-1 construct for the shear connections being connected described steel truss and concrete slab 2 with hoop stirrup two 4-4 composition.During practice of construction, in described lattice, beam string structure is built in concrete slab 2.
During practice of construction, hoop stirrup two 4-4 described in per pass is successively through the hole that multiple described vertical open pore steel plate one 3-1 laid side by side opens, and longitudinal reinforcement one 4-1 described in per pass is successively through the hole that multiple described vertical open pore steel plate two 3-2 laid side by side opens.
In the present embodiment, the symmetrical laying of the two described diagonal web member 1-3 of row in described steel truss unit, the equal indention of many described diagonal web member 1-3 often arranged in described diagonal web member 1-3 is laid, in described steel truss unit, upper chord 1-1 described in twice is provided with multiple upper tie point connected with diagonal web member 1-3 upper end respectively, the symmetrical laying of multiple described upper tie point set on upper chord 1-1 described in twice and its composition is multipair respectively for the upper tie point that the horizontal connector that winds up described in multiple tracks connects, wind up described in the multiple tracks two ends of horizontal connector are connected on multipair described upper tie point respectively.
That is, to wind up described in multiple tracks in the horizontal connection structure 1-4 quantity of horizontal connector of winding up described in is identical with the quantity of multiple described upper tie point set on upper chord 1-1 described in twice.
In the present embodiment, horizontal steel plate two 6-2 of horizontal connector and horizontal steel plate one 6-1 of each upper chord 1-1 that respectively winds up in described steel truss unit is all laid on same plane, and horizontal steel plate one 6-1 of upper chord 1-1 described in adjacent twice is fastenedly connected by horizontal steel plate two 6-2 of the horizontal connector that respectively winds up in the horizontal connection structure 1-4 that winds up and is integrated.
Actually add man-hour, described vertical open pore steel plate one 3-1 and described vertical open pore steel plate two 3-2 is the steel plate strip that middle part has a round hole.
In the present embodiment, described lower chord 1-2 is encased structures.As shown in Fig. 4-1, described lower chord 1-2 comprises outer steel pipe one 5-1 and builds the concrete structure one in described outer steel pipe one 5-1, the inside wall of described outer steel pipe one 5-1 is laid with multiple tracks stiffening rib one 5-2, described in multiple tracks, stiffening rib one 5-2 is PBL stiffening rib, on the inside wall that stiffening rib one 5-2 described in multiple tracks is all weldingly fixed on described outer steel pipe one 5-1 and its all lay along the central axial direction of described outer steel pipe one 5-1.
In the present embodiment, described outer steel pipe one 5-1 and described outer steel pipe two are rectangular steel pipe.
During practice of construction, described outer steel pipe one 5-1 and described outer steel pipe two also can adopt round steel pipe or cross section to be foursquare steel pipe.
In the present embodiment, diagonal web member 1-3 in described steel truss unit comprises tension member or compression member two type, described tension member is the empty steel pipe two that sky steel pipe one or inside are provided with multiple tracks longitudinal stiffener, described compression member is reinforced diagonal web member, and described reinforced diagonal web member is encased structures.Described reinforced diagonal web member comprises outer steel pipe two and builds the concrete structure two in described outer steel pipe two, the inside wall of described outer steel pipe two is laid with multiple tracks stiffening rib two, described in multiple tracks, stiffening rib two is PBL stiffening rib, on the inside wall that stiffening rib two described in multiple tracks is all weldingly fixed on described outer steel pipe two and its all lay along the central axial direction of described outer steel pipe two, stiffening rib two described in per pass is all vertical runs with the inside wall of outer steel pipe two described in its installation position place.Described PBL stiffening rib is the perforate stiffening rib that top has the multiple through holes be positioned on same row.
In practice of construction process, first according to force analysis, determine the stress of each diagonal web member 1-3, and according to stress, diagonal web member 1-3 is divided into tension member or compression member two type.
In the present embodiment, in conjunction with Figure 13 and Figure 14, described steel truss unit also comprises the support type web member 1-6 that many groups are positioned at bridge substructure supporting place, often organize described support type web member 1-6 and include the symmetrical laying in two, left and right and the support type web member 1-6 be laid on same vertical plane, described support type web member 1-6 is encased structures and its inside is laid with multiple tracks stiffening rib three; The two described support type web member 1-6 often organized in described support type web member 1-6 to be laid in described in twice between upper chord 1-1 and lower chord 1-2 respectively; Described bridge substructure is bridge pier or abutment.Described bridge substructure is bridge pier or abutment.
In the present embodiment, described support type web member 1-6 comprises outer steel pipe three and builds the concrete structure three in described outer steel pipe two, stiffening rib three described in multiple tracks is laid on the inside wall of described outer steel pipe three, described in multiple tracks, stiffening rib three is PBL stiffening rib, on the inside wall that stiffening rib three described in multiple tracks is all weldingly fixed on described outer steel pipe three and its all lay along the central axial direction of described outer steel pipe three, stiffening rib three described in per pass is all vertical runs with the inside wall of outer steel pipe three described in its installation position place.Described PBL stiffening rib is the perforate stiffening rib that top has the multiple through holes be positioned on same row.
During practice of construction, the cross sectional dimensions being positioned at the support type web member 1-6 of bridge pier supporting place is greater than the cross sectional dimensions of the support type web member 1-6 being positioned at abutment supporting place, and the cross sectional dimensions being positioned at the support type web member 1-6 of abutment supporting place is identical with the cross sectional dimensions of described diagonal web member 1-3.
As shown in Figure 5, multiple described vertical open pore steel plate one 3-1 in upper chord 1-1 described in per pass is all welded as a whole with each vertical open pore steel plate two 3-2 in connector horizontal described in multiple tracks is fastening, and multiple described vertical open pore steel plate one 3-1 is elongated laying.
In the present embodiment, in described upper chord 1-1, the quantity of included vertical open pore steel plate one 3-1 is three, and three described vertical open pore steel plate one 3-1 are in evenly laying.Described multiple described vertical open pore steel plate two 3-2 winded up in horizontal connector is in evenly laying.Being positioned at the horizontal connector that to wind up described in supporting place of described bridge substructure in the described horizontal connection structure 1-4 that winds up is reinforced horizontal connector, and in described reinforced horizontal connector, the quantity of included vertical open pore steel plate two 3-2 is 6 ~ 8.The horizontal connector that winds up described in except described reinforced horizontal connector in the described horizontal connection structure 1-4 that winds up is the horizontal connector of plain edition, and in the horizontal connector of described plain edition, the quantity of included vertical open pore steel plate two 3-2 is three.The width of horizontal steel plate two 6-2 described in described reinforced horizontal connector is greater than the width of horizontal steel plate two 6-2 described in the horizontal connector of described plain edition.
In the present embodiment, the width of horizontal steel plate two 6-2 described in described reinforced horizontal connector is 1.8 times ~ 2.2 times of horizontal steel plate two 6-2 width described in described plain edition transverse direction connector.Spacing in the horizontal connector of described plain edition between adjacent two described vertical open pore steel plate two 3-2 is identical with the spacing between two described vertical open pore steel plate one 3-1 adjacent in described upper chord 1-1.
Described cage of reinforcement also comprises multiple tracks and to be all laid on same plane and it is all laid in direction across bridge to longitudinal reinforcement two 4-2 laid, hoop stirrup one 4-3 described in multiple tracks in vertical bridge along vertical bridge to hoop stirrup one 4-3 carrying out from front to back laying and multiple tracks.Wherein, the structure of hoop stirrup one 4-3 is as shown in Fig. 9-2.
In the present embodiment, described in multiple tracks, hoop stirrup one 4-3 is all laid in same level.Described in multiple tracks, hoop stirrup two 4-4 is all laid in same level, and described in multiple tracks, longitudinal reinforcement one 4-1 is all laid in same level.
In described lattice beam string structure meta in vertical open pore steel plate one 3-1 of the leftmost side be the vertical open pore steel plate one in left side, in described lattice beam string structure meta in vertical open pore steel plate one 3-1 of the rightmost side be the vertical open pore steel plate one in right side.Described hoop stirrup one 4-3 is the U-stirrups of bottom opening, the two ends of described hoop stirrup one 4-3 are weldingly fixed on the vertical open pore steel plate one of the vertical open pore steel plate in described left side one and described right side respectively, above the horizontal connector that winds up described in described hoop stirrup one 4-3 is positioned at.In the present embodiment, described in multiple tracks, hoop stirrup one 4-3 is all laid in outside longitudinal reinforcement one 4-1 described in multiple tracks.
In the present embodiment, described hoop stirrup two 4-4 is for remaining silent stirrup and it is laid in the periphery of longitudinal reinforcement two 4-2 described in longitudinal reinforcement one 4-1 described in multiple tracks and multiple tracks, and described in longitudinal reinforcement one 4-1 described in per pass and per pass, longitudinal reinforcement two 4-2 is all welded and fixed with hoop stirrup two 4-4 described in multiple tracks and is integrated; Longitudinal reinforcement two 4-2 described in multiple tracks is laid in plate face and the edge of a wing place of concrete slab 2 respectively, and longitudinal reinforcement two 4-2 described in per pass is all welded and fixed with hoop stirrup one 4-3 described in multiple tracks and is integrated.
That is, described hoop stirrup one 4-3 be positioned at described in wind up above horizontal connector and it is around in the periphery of longitudinal reinforcement two 4-2 described in multiple tracks; Described hoop stirrup two 4-4 for remain silent stirrup its successively through the hole on multiple vertical open pore steel plate one 3-1 that lays side by side and it is around in the periphery of longitudinal reinforcement two 4-2 described in longitudinal reinforcement one 4-1 described in multiple tracks and multiple tracks.
Simultaneously, composition graphs 9-4 and Fig. 9-5, described hoop stirrup two 4-4 is fixed with vertical lacing wire 4-5 described in multiple tracks hoop lacing wire 4-6 and the vertical lacing wire 4-5 of multiple tracks, hoop lacing wire 4-6 described in multiple tracks and multiple tracks to be all laid on same vertical plane to stirrup two 4-4 with institute retainer ring.The quantity of described hoop lacing wire 4-6 is identical with the quantity of upper chord 1-1 in beam string structure in described lattice, and described in multiple tracks, hoop lacing wire 4-6 is all sleeved on outside upper chord 1-1.
In the present embodiment, in described lattice, vertical open pore steel plate one 3-1 described in beam string structure is all identical with the vertical height of described vertical open pore steel plate two 3-2.Multiple described vertical open pore steel plate one 3-1 in upper chord 1-1 described in per pass is all welded as a whole with each vertical open pore steel plate two 3-2 in connector horizontal described in multiple tracks is fastening.
As shown in Figure 8, the hole that described vertical open pore steel plate one 3-1 and described vertical open pore steel plate two 3-2 opens is nose circle shape hole, and described vertical open pore steel plate one 3-1 is all identical with the size of institute's hole-opening on described vertical open pore steel plate two 3-2 and it is all in evenly laying.
During practice of construction, the thickness of described concrete slab 2 is 30cm ~ 40cm.Top 10cm ~ the 20cm lower than described concrete slab 2 top of described vertical open pore steel plate one 3-1 and described vertical open pore steel plate two 3-2.The thickness of slab of described vertical open pore steel plate one 3-1 and described vertical open pore steel plate two 3-2 is 5mm ~ 10mm and its vertical height is 20cm ~ 25cm; Vertical height H=15cm ~ the 20cm in described nose circle shape hole and its transverse width D=5cm ± 2cm, the spacing in adjacent two described nose circle shape holes is 10cm ± 2cm.
In the present embodiment, the vertical height of described vertical open pore steel plate one 3-1 and vertical open pore steel plate two 3-2 is 25cm, on described vertical open pore steel plate one 3-1 open the vertical height H=19m in nose circle shape hole, transverse width D=7cm and the spacing in adjacent two described nose circle shape holes is 12cm, on described vertical open pore steel plate one 3-1 to open nose circle shape Kongzui lower edge apart from the spacing of vertical open pore steel plate one 3-1 lower edge be 25mm, described vertical open pore steel plate one 3-1 is assembled by multiple vertical open pore steel plate sections one laid from front to back, described vertical open pore steel plate sections one has 2950mm and 6000mm two kinds of length.
On described vertical open pore steel plate two 3-2 open vertical height H=17m, the transverse width D=7cm in nose circle shape hole and the spacing in adjacent two described nose circle shape holes is 12cm, on described vertical open pore steel plate two 3-2 to open nose circle shape Kongzui lower edge apart from the spacing of vertical open pore steel plate two 3-2 lower edge be 25mm, described vertical open pore steel plate two 3-2 is assembled by multiple vertical open pore steel plate sections two laid from front to back, and described vertical open pore steel plate sections two has 500mm and 3700mm two kinds of length.
During practice of construction, can according to specific needs, on vertical open pore steel plate one 3-1 and described vertical open pore steel plate two 3-2 open nose circle shape hole the spacing of vertical height H and transverse width D and adjacent two described nose circle shape holes adjust accordingly.
In the present embodiment, as shown in Figure 10, Figure 11, the direction across bridge of described concrete slab 2 and vertical bridge are to being Varying Thickness Plates.
During practice of construction, the longitudinal reinforcement one 4-1 undulate be laid at concrete slab 2 span centre position is laid, and longitudinal reinforcement one 4-1 winded up between horizontal connector upwards bends up described in the adjacent twice in front and back, builds thickness with what reduce concrete slab 2.
During practice of construction, vertical open pore steel plate one 3-1 described in described upper chord 1-1 is connected with being fixed with welding manner between described horizontal steel plate one 6-1, and described diagonal web member 1-3 upper end is connected with being all fixed with welding manner between described horizontal steel plate and between its lower end with lower chord 1-2.
To sum up, described vertical open pore steel plate one 3-1 and vertical open pore steel plate two 3-2 is respectively upper chord 1-1 and the ingredient of the horizontal connection structure 1-4 that winds up, and the two doubles as shear connector; Described horizontal steel plate one 6-1 and described horizontal steel plate two 6-2 is respectively upper chord 1-1 and the ingredient of the horizontal connection structure 1-4 that winds up, and the two double steel bed die making concrete slab 2, makes upper chord 1-1 all be fastenedly connected with concrete slab 2 with the horizontal connection structure 1-4 that winds up and is integrated.Described vertical open pore steel plate one 3-1 is mutually concordant with the bottom of concrete slab 2 with the bottom of vertical open pore steel plate two 3-2 and it is concordant with the upper surface homogeneous phase of described horizontal steel plate two 6-2 with described horizontal steel plate one 6-1.
During practice of construction, the horizontal connector direction across bridge that winds up described in described multiple tracks of winding up in horizontal connection structure 1-4 to be disposed on described in the twice that are parallel to each other between upper chord 1-1, and the horizontal connection structure 1-4 that winds up is laid in same level and the two intersects vertically, described wind up horizontal connection structure 1-4 and the intersection of upper chord 1-1 adopt upper chord 1-1 overall through and the horizontal connection structure 1-4 that winds up disconnects the mode of welding, form plane grid-system (i.e. beam string structure in described lattice), in described lattice, beam string structure is simultaneously as the steel saddle of concrete slab 2.
Due to described vertical open pore steel plate one 3-1 and vertical open pore steel plate two 3-2 all having row's nose circle shape hole, and to open the vertical height in nose circle shape hole larger, to be conducive in concrete slab 2 lay reinforcing bar (specifically referring to longitudinal reinforcement one 4-1 and hoop stirrup two 4-4) bend up layout, as the reserving hole of reinforcing bar in concrete slab 2.Described concrete slab 2 to be supported in the described lattice that formed by the horizontal connection structure 1-4 and upper chord 1-1 that winds up on beam string structure, and rely in each nose circle shape hole and build shaping concrete tenon and through longitudinal reinforcement one 4-1 bears the vertically shearing in open pore steel plate one 3-1 longitudinal length direction and the separating force between described steel truss and concrete slab 2, and rely on vertical open pore steel plate two 3-2 to bear transverse shearing force, described steel truss and concrete slab 2 are linked into an integrated entity, forms overall steel truss-concrete slab compound beam.
During practice of construction, after described Welding steel truss is shaping, first in described steel truss, the installation position place of described horizontal steel plate one 6-1 of each upper chord 1-1 sets up concreting bed die, and cage of reinforcement described in colligation.In the present embodiment, the steel board adopted in described steel truss all adopts Q345D steel.Described concrete slab 2 is ordinary reinforced concrete plate, adopts C40 concrete.Wherein, longitudinal reinforcement one 4-1 and longitudinal reinforcement two 4-2 all adopts HRB400 reinforcing bar, described hoop stirrup one 4-3 and hoop stirrup two 4-4 all adopts plain bar and it all adopts plain bars HPB300.During concreting, necessary vibration compacting, especially notes the pouring quality of hole place concrete tenon, carries out health after concreting completes in strict accordance with related specifications.
Embodiment 2
In the present embodiment, as shown in figure 12, as different from Example 1: in described steel truss, the quantity of included steel truss unit is multiple, in described lattice, in beam string structure, the upper chord 1-1 of adjacent two the described steel truss units shareds in left and right is common type upper chord, and the upper chord 1-1 in described lattice in beam string structure except described common type upper chord is plain edition upper chord; Spacing in described common type upper chord between adjacent two described vertical open pore steel plate one 3-1 is greater than the spacing in described plain edition upper chord between adjacent two described vertical open pore steel plate one 3-1.
In the present embodiment, the lower chord 1-2 of adjacent two the described steel truss unit in left and right lays left and right adjacent twice lower chord 1-2 at grade, lower chord 1-2 described in the horizontal connection structure 1-5 of lower edge twice adjacent with left and right to be laid in same level and it to comprise multiple tracks be the lower edge transverse direction connector that direction across bridge is laid.Lower chord 1-2 described in the adjacent twice in left and right is provided with multiple lower tie point connected with diagonal web member 1-3 lower end respectively, the symmetrical laying of multiple described lower tie point set on lower chord 1-2 described in the adjacent twice in left and right and its composition is multipair respectively for the lower tie point that the horizontal connector of lower edge described in multiple tracks connects, the two ends of the horizontal connector of lower edge described in multiple tracks are connected on multipair described lower tie point respectively.
That is, in the horizontal connection structure 1-5 of described lower edge described in multiple tracks under wind up horizontal connector quantity twice adjacent with left and right described in the quantity of multiple described lower tie point set by lower chord 1-2 identical.
In the present embodiment, the right side steel truss unit that adjacent two the described steel truss unit in left and right are respectively left side steel truss unit and are positioned on the right side of the steel truss unit of described left side; The row diagonal web member 1-3 that a row diagonal web member 1-3 on the right side of being arranged in the steel truss unit of described left side and described right side steel truss unit are positioned at left side symmetrically lays.
In the present embodiment, in described steel truss, the quantity of included steel truss unit is two.
During practice of construction, according to according to specific needs, the quantity of steel truss unit included in described steel truss is adjusted accordingly.
In the present embodiment, the structure of remainder is all identical with embodiment 1 with annexation.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (10)
1. the steel truss-concrete slab composite beam based on shear connections structure, it is characterized in that: comprise in vertical bridge to the steel truss laid and the concrete slab (2) be laid in directly over described steel truss, described concrete slab (2) is that vertical bridge is to laying; Described steel truss comprise one or more in vertical bridge to the steel truss unit laid, multiple described steel truss unit is laid at grade from left to right along direction across bridge, the structure of multiple described steel truss unit all identical with size and its be fastenedly connected and be integrated;
Described steel truss unit is by twice upper chord (1-1), one lower chord (1-2) and left and right two arrange the inverted triangular truss beam being supported in the diagonal web member (1-3) described in lower chord (1-2) and twice between upper chord (1-1) respectively and forming, often arrange described diagonal web member (1-3) and include the many diagonal web members (1-3) laid from front to back, described upper chord (1-1) and lower chord (1-2) all in vertical bridge to laying, upper chord described in twice (1-1) symmetry is laid in the oblique upper, the left and right sides of described lower chord (1-2), described lower chord (1-2) arranges described diagonal web member (1-3) with upper chord (1-1) described in twice by two and connects as one, connected by the horizontal connection structure (1-4) that winds up between upper chord described in twice (1-1), and upper chord described in twice (1-1) is all laid on same plane with the horizontal connection structure (1-4) that winds up, adjacent two the described steel truss units shareds one upper chord (1-1) in left and right in multiple described steel truss unit, are connected by the horizontal connection structure (1-5) of lower edge between the lower chord (1-2) of adjacent two the described steel truss unit in left and right, described upper chord (1-1) comprises horizontal steel plate one (6-1) and multiple vertical open pore steel plate one (3-1) be all laid on described horizontal steel plate one (6-1), described horizontal steel plate one (6-1) and multiple described vertical open pore steel plate one (3-1) all in vertical bridge to laying, it is the horizontal connector that winds up that direction across bridge is laid that the described horizontal connection structure (1-4) that winds up comprises multiple tracks, the described horizontal connector that winds up comprises horizontal steel plate two (6-2) and multiple vertical open pore steel plate two (3-2) be all laid on described horizontal steel plate two (6-2), and described horizontal steel plate two (6-2) and multiple described vertical open pore steel plate two (3-2) are all laid in direction across bridge,
All upper chords (1-1) in described steel truss and the horizontal connection structure (1-4) that winds up between adjacent two upper chords (1-1) form beam string structure in lattice, described concrete slab (2) to wind up structural reinforced concrete structure in described lattice for building, cage of reinforcement in described concrete slab (2) comprises the longitudinal reinforcement one (4-1) that multiple tracks is laid along direction across bridge along vertical bridge side by side to the hoop stirrup two (4-4) carrying out from front to back laying and multiple tracks, described in multiple tracks, hoop stirrup two (4-4) is all laid on same plane, described in multiple tracks, longitudinal reinforcement one (4-1) is all laid on same plane, each described vertical open pore steel plate one (3-1) all has a row and supplies the hole that described in multiple tracks, hoop stirrup two (4-4) passes respectively, each described vertical open pore steel plate two (3-2) has a row and supplies the hole that described in multiple tracks, longitudinal reinforcement one (4-1) passes respectively, described vertical open pore steel plate one (3-1) in described lattice in beam string structure, described vertical open pore steel plate two (3-2), longitudinal reinforcement one (4-1) construct for the shear connections being connected described steel truss and concrete slab (2) with hoop stirrup two (4-4) composition.
2. according to a kind of steel truss-concrete slab composite beam based on shear connections structure according to claim 1, it is characterized in that: two row described diagonal web member (1-3) symmetrical layings in described steel truss unit, often arrange many described diagonal web members (1-3) all indention layings in described diagonal web member (1-3), in described steel truss unit, upper chord (1-1) described in twice is provided with multiple upper tie point connected with diagonal web member (1-3) upper end respectively, the symmetrical laying of multiple described upper tie point that upper chord described in twice (1-1) is upper set and its composition is multipair respectively for the upper tie point that the horizontal connector that winds up described in multiple tracks connects, wind up described in the multiple tracks two ends of horizontal connector are connected on multipair described upper tie point respectively, the lower chord (1-2) of adjacent two the described steel truss unit in left and right is lay the adjacent twice lower chord (1-2) in left and right at grade, lower chord (1-2) described in horizontal connection structure (1-5) twice adjacent with left and right of lower edge to be laid in same level and it to comprise multiple tracks be the lower edge transverse direction connector that direction across bridge is laid, lower chord (1-2) described in the adjacent twice in left and right is provided with multiple lower tie point connected with diagonal web member (1-3) lower end respectively, the symmetrical laying of multiple described lower tie point that lower chord (1-2) described in the adjacent twice in left and right is upper set and its composition is multipair respectively for the lower tie point that the horizontal connector of lower edge described in multiple tracks connects, the two ends of the horizontal connector of lower edge described in multiple tracks are connected on multipair described lower tie point respectively.
3. according to a kind of steel truss-concrete slab composite beam based on shear connections structure described in claim 1 or 2, it is characterized in that: the horizontal steel plate two (6-2) of the horizontal connector that respectively winds up in described steel truss unit and the horizontal steel plate one (6-1) of each upper chord (1-1) are all laid on same plane, the horizontal steel plate one (6-1) of upper chord (1-1) described in adjacent twice is fastenedly connected by the horizontal steel plate two (6-2) of the horizontal connector that respectively winds up in the horizontal connection structure (1-4) that winds up and is integrated.
4., according to a kind of steel truss-concrete slab composite beam based on shear connections structure described in claim 1 or 2, it is characterized in that: described lower chord (1-2) is encased structures; Described lower chord (1-2) comprises outer steel pipe one (5-1) and builds the concrete structure one in described outer steel pipe one (5-1), the inside wall of described outer steel pipe one (5-1) is laid with multiple tracks stiffening rib one (5-2), described in multiple tracks, stiffening rib one (5-2) is PBL stiffening rib, on the inside wall that stiffening rib one (5-2) described in multiple tracks is all weldingly fixed on described outer steel pipe one (5-1) and its all lay along the central axial direction of described outer steel pipe one (5-1).
5. according to a kind of steel truss-concrete slab composite beam based on shear connections structure described in claim 1 or 2, it is characterized in that: described steel truss unit also comprises the support type web member (1-6) that many groups are positioned at bridge substructure supporting place, often organize described support type web member (1-6) and include the symmetrical laying in two, left and right and the support type web member (1-6) be laid on same vertical plane, described support type web member (1-6) is for encased structures and its inside is laid with multiple tracks stiffening rib three; The two described support type web members (1-6) often organized in described support type web member (1-6) are laid between upper chord described in twice (1-1) and lower chord (1-2) respectively; Described bridge substructure is bridge pier or abutment.
6. according to a kind of steel truss-concrete slab composite beam based on shear connections structure described in claim 1 or 2, it is characterized in that: in described upper chord (1-1), the quantity of included vertical open pore steel plate one (3-1) is three, three described vertical open pore steel plates one (3-1) are in evenly laying; The described multiple described vertical open pore steel plate two (3-2) winded up in horizontal connector is in evenly laying; Being positioned at the horizontal connector that to wind up described in supporting place of described bridge substructure in the described horizontal connection structure (1-4) that winds up is reinforced horizontal connector, and in described reinforced horizontal connector, the quantity of included vertical open pore steel plate two (3-2) is 6 ~ 8; The horizontal connector that winds up described in except described reinforced horizontal connector in the described horizontal connection structure (1-4) that winds up is the horizontal connector of plain edition, and in the horizontal connector of described plain edition, the quantity of included vertical open pore steel plate two (3-2) is three; The width of horizontal steel plate two (6-2) described in described reinforced horizontal connector is greater than the width of horizontal steel plate two (6-2) described in the horizontal connector of described plain edition.
7. according to a kind of steel truss-concrete slab composite beam based on shear connections structure described in claim 1 or 2, it is characterized in that: in described lattice, in beam string structure, the upper chord (1-1) of adjacent two the described steel truss units shareds in left and right is common type upper chord, and the upper chord (1-1) in described lattice in beam string structure except described common type upper chord is plain edition upper chord; Spacing in described common type upper chord between adjacent two described vertical open pore steel plates one (3-1) is greater than the spacing in described plain edition upper chord between adjacent two described vertical open pore steel plates one (3-1).
8. according to a kind of steel truss-concrete slab composite beam based on shear connections structure described in claim 1 or 2, it is characterized in that: it is that vertical bridge is to the longitudinal reinforcement two (4-2) laid along vertical bridge to the hoop stirrup one (4-3) carrying out from front to back laying and multiple tracks that described cage of reinforcement also comprises multiple tracks; In described lattice, the vertical open pore steel plate one (3-1) of beam string structure meta in the leftmost side is the vertical open pore steel plate one in left side, and in described lattice, the vertical open pore steel plate one (3-1) of beam string structure meta in the rightmost side is the vertical open pore steel plate one in right side; The U-stirrups that described hoop stirrup one (4-3) is bottom opening, the two ends of described hoop stirrup one (4-3) are weldingly fixed on the vertical open pore steel plate one of the vertical open pore steel plate in described left side one and described right side respectively, above the horizontal connector that winds up described in described hoop stirrup one (4-3) is positioned at; Described hoop stirrup two (4-4) is for remaining silent stirrup and it is laid in the periphery of longitudinal reinforcement two (4-2) described in longitudinal reinforcement one (4-1) described in multiple tracks and multiple tracks, and described in longitudinal reinforcement one (4-1) described in per pass and per pass, longitudinal reinforcement two (4-2) is all welded and fixed with hoop stirrup described in multiple tracks two (4-4) and is integrated; Longitudinal reinforcement two (4-2) described in multiple tracks is laid in plate face and the edge of a wing place of concrete slab (2) respectively.
9., according to a kind of steel truss-concrete slab composite beam based on shear connections structure described in claim 1 or 2, it is characterized in that: in described lattice, vertical open pore steel plate one (3-1) described in beam string structure is all identical with the vertical height of described vertical open pore steel plate two (3-2); Multiple described vertical open pore steel plate one (3-1) in upper chord described in per pass (1-1) is all welded as a whole with each vertical open pore steel plate two (3-2) in connector horizontal described in multiple tracks is fastening, and multiple described vertical open pore steel plate one (3-1) is in elongated laying.
10. according to a kind of steel truss-concrete slab composite beam based on shear connections structure described in claim 1 or 2, it is characterized in that: the hole that described vertical open pore steel plate one (3-1) and described vertical open pore steel plate two (3-2) are opened is nose circle shape hole, described vertical open pore steel plate one (3-1) is all identical with the size of institute's hole-opening on described vertical open pore steel plate two (3-2) and it is all in evenly laying.
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| CN103924982A (en) * | 2014-04-16 | 2014-07-16 | 中铁第四勘察设计院集团有限公司 | Shear resisting structure between round-end-shaped concave-convex tenon type shield tunnel pipe segment rings |
| CN104790288B (en) * | 2015-04-07 | 2016-12-07 | 中铁大桥勘测设计院集团有限公司 | Steel construction-concrete slab combines the reinforcing bar reinforcement structure of bridge |
| CN106223183B (en) * | 2016-09-13 | 2018-07-27 | 长安大学 | Assembled concrete-filled rectangular steel tube combines truss bridge and construction method |
| CN109933838B (en) * | 2019-01-11 | 2022-05-17 | 重庆交通大学 | Method for calculating overall-process slippage of assembled shear connector |
| CN110886216B (en) * | 2019-12-10 | 2021-06-15 | 宁波索思机械设计有限公司 | Bridge deck steel plate of steel structure bridge |
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