CN113026526A - Large-span cable-stayed bridge framing type steel box girder - Google Patents
Large-span cable-stayed bridge framing type steel box girder Download PDFInfo
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- CN113026526A CN113026526A CN202110353684.3A CN202110353684A CN113026526A CN 113026526 A CN113026526 A CN 113026526A CN 202110353684 A CN202110353684 A CN 202110353684A CN 113026526 A CN113026526 A CN 113026526A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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Abstract
The application relates to the technical field of steel box girders, in particular to a framing type steel box girder of a large-span cable-stayed bridge, which comprises a steel box girder main body and a base for supporting the steel box girder main body; the steel box girder main body comprises a bottom plate, a top plate and a plurality of webs and partition plates arranged between the bottom plate and the top plate; a positioning assembly for positioning the installation position of the bottom plate is arranged between the bottom plate and the base; a plurality of first reinforcing pieces are arranged on the surface of the top plate facing the bottom plate, and a plurality of second reinforcing pieces are arranged on the surface of the bottom plate facing the top plate; a plurality of first pressure-bearing deformation detection alarm assemblies are arranged between the bottom plate and the top plate. This application has reinforcing steel box girder structural strength, improves the protection to the steel box girder main part, makes things convenient for managers in time to detect the effect of steel box girder deformation problem.
Description
Technical Field
The application relates to the technical field of steel box girders, in particular to a framing type steel box girder of a large-span cable-stayed bridge.
Background
The steel box girder is also called steel plate box girder, and is a common structural form of a large-span bridge. The steel box girder is generally used on bridges with large span and is called as a steel box girder because the steel box girder is shaped like a box.
The bridge using the steel box girder generally needs to directly hoist and support the steel box girder on the ground of the bridge to be erected, the acting forces such as compression and tension of the steel box girder are complex, the surface structure of the steel box girder is easy to damage and deform in long-time use, the steel box girder is difficult to find and repair manually, meanwhile, the steel box girder is directly fixedly connected with the supporting point, and the supporting acting force of the supporting point can also cause abrasion damage to the main body of the steel box girder.
Disclosure of Invention
In order to strengthen steel box girder structural strength, improve and protect to steel box girder main part, make things convenient for managers in time to detect steel box girder deformation problem, this application provides a large-span cable-stayed bridge beam framing formula steel box girder.
The application provides a pair of large-span draws bridge framing formula steel box girder to one side adopts following technical scheme:
a large-span cable-stayed bridge framing type steel box girder comprises a steel box girder main body and a base for supporting the steel box girder main body;
the steel box girder main body comprises a bottom plate, a top plate and a plurality of webs and partition plates arranged between the bottom plate and the top plate;
a positioning assembly for positioning the installation position of the bottom plate is arranged between the bottom plate and the base;
a plurality of first reinforcing pieces are arranged on the surface of the top plate facing the bottom plate, and a plurality of second reinforcing pieces are arranged on the surface of the bottom plate facing the top plate;
a plurality of first pressure-bearing deformation detection alarm assemblies are arranged between the bottom plate and the top plate.
By adopting the technical scheme, an operator fixes a plurality of first reinforcing pieces on the top plate in advance, fixes a plurality of second reinforcing pieces on the bottom plate, sequentially installs the web plate and the partition plate and combines the bottom plate and the top plate, thereby completing the assembly of the steel box girder main body, enhancing the bearing structure strength of the steel box girder main body and reducing the overall structure quality through the web plate and the clapboard, then a plurality of first pressure-bearing deformation detection alarm assemblies are arranged between the bottom plate and the top plate, which is favorable for detecting the pressure-bearing deformation of the top plate in real time, prompts managers to find and overhaul the corresponding positions in time, improves the use safety of the steel box girder main body, after the bottom plate and the base are relatively installed and fixed through the positioning assemblies, make things convenient for follow-up operating personnel to erect and adorn steel box girder main part and directly dock with the base, when avoiding erecting and adorning steel box girder main part, support end and bottom plate direct mount contact, improve the protection to steel box girder main part.
Optionally, the base plate includes a main bearing base plate and an inclined bearing plate connected to two opposite ends of the main bearing base plate, and the base bears the main bearing base plate and the inclined bearing plate;
the positioning assembly comprises a plurality of fixedly connected first positioning rods and a plurality of fixedly connected second positioning rods of the inclined bearing plate, the base is provided with a first positioning groove and a second positioning groove, the first positioning groove is connected with the first positioning rod in a clamped mode, the second positioning groove is connected with the second positioning rod in a clamped mode, and the first positioning rod and the second positioning rod are crossed in extension directions.
Through adopting above-mentioned technical scheme, behind two bearing plate fixed connection owner bearing bottom plate, relative roof formed triangular supports structure, during operating personnel equipment owner bearing bottom plate, bearing plate and base to one side, a locating lever joint corresponds constant head tank one, two joints of locating lever correspond constant head tank two, and the extending direction and the two intercrossings of locating lever one to make the two intercrossing limiting displacement of forming direction of locating lever one and locating lever, be favorable to strengthening the main bearing bottom plate, the stability of the relative base of bearing plate to one side.
Optionally, the positioning assembly further comprises two first lifting rings which are fixed to the two ends, opposite to each other, of the base, the two first lifting rings correspond to the two ends, opposite to each other, of the inclined bearing plates one by one, a plurality of second lifting rings are fixed to the two ends, opposite to each other, of the inclined bearing plates, and the first lifting rings and the second lifting rings correspond to each other one by one and are connected with steel wire ropes.
Through adopting above-mentioned technical scheme, connect through a plurality of wire rope and correspond rings one and rings two, further at the back of the body end location base and the inclined support plate relative position of two inclined support plates, improve the stability of base bearing steel box girder main part.
Optionally, the web includes a main web fixed on the surface of the main bottom bearing plate facing the top plate and an inclined web fixed on the surface of the inclined bearing plate facing the top plate, and the extending directions of the main web and the inclined web are perpendicular to the opposite directions of the two inclined bearing plates;
the baffle is including fixing adjacent oblique baffle between main web and the oblique web and fixing adjacent main baffle between the main web, oblique baffle and main baffle's extending direction is on a parallel with two the relative direction of inclined carrier plate.
Through adopting above-mentioned technical scheme, main web, oblique web and main baffle, oblique baffle intercrossing form the empty case structure, are favorable to reinforceing the structural stability who supports between main bottom plate, bearing plate and roof to one side, and the empty case structure is favorable to reducing the whole dead weight of steel box girder, reduces the pressure-bearing of hoist and mount, bearing steel box girder.
Optionally, a first through hole is formed in the plate surface of the main partition plate, and a second through hole is formed in the plate surface of the inclined partition plate.
Through adopting above-mentioned technical scheme, through mouthful one and through mouthful two reduce the dead weight of main baffle, oblique baffle, further reduce the steel box girder dead weight, make things convenient for inside maintenance and the filling of steel box girder to strengthen structure etc..
Optionally, the first reinforcing member is a first hollow rod fixedly connected with the top plate, the extending direction of the first hollow rod is parallel to the extending direction of the main web plate, and a plurality of first hollow rods are uniformly arranged along the two inclined bearing plates in sequence;
the second reinforcing piece is provided with a main bearing rib fixedly connected with the main bearing bottom plate and an inclined rib fixedly connected with the inclined bearing plate, the extending directions of the main bearing rib and the inclined rib are both parallel to the extending direction of the first hollow rod, and the main bearing rib and the inclined rib are sequentially and uniformly arranged along the opposite direction between the two inclined bearing plates;
and a plurality of hollow rods II are fixed on the opposite surface and the back surface of each adjacent main web plate.
Through adopting above-mentioned technical scheme, the ability that the roof resisted external force deformation is reinforceed to hollow rod one fixed connection on the roof after, improve the structural strength of roof, hollow rod one relies on self hollow structure to reduce the dead weight simultaneously, alleviate the whole weight of cooperation roof, a plurality of main ribs and the rib to one side reinforce main bottom plate and the ability that the bearing plate resists external force deformation, improve the structural strength that main bottom plate and bearing plate to one side, hollow rod two strengthens the holistic ability of resisting external force deformation of main web, improve the structural strength of main web, hollow rod two relies on self hollow structure to reduce the dead weight, alleviate the whole weight of cooperation main web, reduce the whole weight of steel box girder.
Optionally, the first pressure-bearing deformation detection alarm component comprises a first detection shell fixed on the surface of the main bearing plate facing the top plate, one end of the first detection shell, which is far away from the main bearing plate, faces one side of the main bearing plate, is provided with a first accommodating groove, a first detection rod is inserted in the first accommodating groove, one end of the first detection rod, which faces the top plate, extends out of the first accommodating groove and is fixed with a first bearing plate, a first pressure-bearing spring is connected between the first bearing plate and one end of the first detection shell, which is far away from the top plate, and is sleeved outside the first detection rod, and the bottom wall of the first accommodating groove is fixed with a first trigger alarm relative to the first detection rod;
under the condition that the pressure-bearing spring is in a non-pressure state, the first bearing plate is attached to the top plate, and a deformation interval is reserved between the first detection rod and the first trigger alarm;
the first detection shell faces towards one end of the main bearing bottom plate is fixed with a first installation seat, the first installation seat is connected with the main bearing ribs in a clamped mode, and the first bearing plate is connected with the first hollow rod in a clamped mode.
Through adopting above-mentioned technical scheme, bearing plate one is attached on the roof through the supporting role of bearing spring one, when the too big emergence deformation of roof pressure-bearing, roof extrusion bearing plate compression bearing spring one in the lump, the measuring bar moves and touches trigger alarm one in one orientation accomodates groove this moment, be favorable to taking place deformation in the roof and in time the suggestion of reporting to the police when damaged even, make things convenient for managers in time to discover and restore to the roof that warp, change etc., improve the safety in utilization of steel box girder main part, a joint owner of mount pad holds the rib, further strengthen the stability of settling of detecting shell one, the hollow pole of a joint of bearing plate one simultaneously, thereby improve the stability of a laminating roof of bearing plate.
Optionally, the base deviates from one side of main bearing bottom plate supports and is no less than a pair of support column, is no less than a pair of the support column is along two the inclined bearing plate opposite direction sets gradually, and adjacent two be fixed with the crossbeam between the support column, the support column with be fixed with the shock attenuation bracket between the base.
Through adopting above-mentioned technical scheme, the back is erect with the base bearing to the support column, and adjacent support column passes through the crossbeam and further strengthens overall structure joint strength, enlarges the area of bearing base through the shock attenuation bracket, improves the structural stability that the support column supported the base.
Optionally, a second pressure-bearing deformation detection alarm assembly is arranged between the cross beam and the base, the second pressure-bearing deformation detection alarm assembly comprises a second detection shell fixed on the surface of the cross beam facing the base, a second accommodating groove is formed in one end, away from the cross beam, of the second detection shell facing one side of the cross beam, a second detection rod is inserted in the second accommodating groove, one end, facing the base, of the second detection rod extends out of the second accommodating groove and is fixedly provided with a second bearing plate, a second pressure-bearing spring is connected between the second bearing plate and one end, away from the cross beam, of the second detection shell, the second pressure-bearing spring is sleeved on the outer side of the second detection rod, and a second trigger alarm is fixed on the bottom wall of the second accommodating groove relative to the second detection rod;
and under the non-pressure state of the pressure-bearing spring II, the bearing plate II is attached to the base, and a deformation interval is reserved between the detection rod II and the trigger alarm II.
Through adopting above-mentioned technical scheme, bearing plate two pass through the supporting role attached on the base of pressure-bearing spring two, when the too big emergence deformation of base pressure-bearing, base extrusion bearing plate two and compression pressure-bearing spring two downwards, two moves and touch trigger alarm two in the groove two are accomodate to the orientation of test bar this moment, be favorable to taking place deformation in the base and in time report to the police the suggestion when damaged even, make things convenient for managers in time to discover and restore, change etc. to deformation base, improve the security that base bearing steel box girder main part used.
Optionally, a rib plate is supported between the damping bracket and the side of the base, which faces away from the inclined carrier plate.
Through adopting above-mentioned technical scheme, the floor cooperation shock attenuation bracket further stabilizes the support base, improves the whole stability of erectting of base and anti vibration structural strength.
In summary, the present application includes at least one of the following beneficial technical effects:
1. an operator fixes a plurality of first reinforcing pieces on the top plate in advance, fixes a plurality of second reinforcing pieces on the bottom plate, sequentially installs the web plate and the partition plate and combines the bottom plate and the top plate, thereby completing the assembly of the steel box girder body, enhances the bearing structural strength of the steel box girder body through the web plate and the partition plate and reduces the overall structural quality, then puts a plurality of first bearing deformation detection alarm components between the bottom plate and the top plate, is beneficial to detecting the bearing deformation of the top plate in real time, prompts managers to find and overhaul the corresponding positions in time, improves the use safety of the steel box girder body, and facilitates the subsequent operator to directly butt joint the steel box girder body and the base after relatively installing and fixing the bottom plate and the base through the positioning component, thereby avoiding the direct installation contact of the supporting end and the bottom plate when the steel box girder body is erected and improving the protection of the steel box girder body;
2. after the two inclined bearing plates are fixedly connected with the main bearing bottom plate, a triangular supporting structure is formed relative to the top plate, when an operator assembles the main bearing bottom plate, the inclined bearing plates and the base, the first positioning rod is clamped with the corresponding first positioning groove, the second positioning rod is clamped with the corresponding second positioning groove, and the extension direction of the first positioning rod is crossed with the second positioning rod, so that the first positioning rod and the second positioning rod form a limiting effect with crossed directions, and the stability of the main bearing bottom plate and the inclined bearing plates relative to the base is enhanced;
3. bearing plate two is attached on the base through the supporting role of bearing spring two, when the too big emergence of base pressure-bearing was out of shape, base extrusion bearing plate two downwards and compression bearing spring two, two moves and the touching triggers alarm two in the groove two is accomodate to the orientation of test bar this moment, be favorable to taking place deformation in the base and in time report to the police the suggestion even when damaged, make things convenient for managers in time to discover and restore, change etc. to the deformation base, improve the security that base bearing steel box girder main part used.
Drawings
Fig. 1 is a schematic structural diagram for embodying the entirety of a steel box girder main body, a base, a positioning assembly and a supporting column in the embodiment of the present application.
Fig. 2 is a schematic structural diagram for embodying a bottom plate, a top plate, a web plate, a partition plate, a first hollow rod, a second hollow rod, a first pressure-bearing deformation detection alarm component and a second pressure-bearing deformation detection alarm component in the embodiment of the present application.
Fig. 3 is a schematic structural diagram for embodying the base, the supporting column, the cross beam and the damping bracket in the embodiment of the present application.
Fig. 4 is an enlarged view at a in fig. 2.
Reference number specification, 1, steel box girder main body; 11. a base plate; 111. a main bearing bottom plate; 112. a tilt bearing plate; 113. a main bearing rib; 114. an oblique rib; 12. a top plate; 13. a web; 131. a primary web; 132. a diagonal web; 14. a partition plate; 141. a main partition plate; 1411. a first through hole; 142. an inclined partition plate; 1421. a second through hole; 15. a first hollow rod; 16. a hollow rod II; 2. a base; 21. positioning a first groove; 22. positioning a second groove; 3. a positioning assembly; 31. a first positioning rod; 32. a second positioning rod; 33. a first hanging ring; 34. a second hanging ring; 35. a wire rope; 4. a first pressure-bearing deformation detection alarm component; 41. detecting a first shell; 411. a first accommodating groove; 42. a first detection rod; 43. a first bearing plate; 44. a first pressure bearing spring; 45. triggering an alarm I; 46. a first mounting seat; 5. a support pillar; 51. a cross beam; 52. a damping bracket; 53. a rib plate; 6. a second pressure-bearing deformation detection alarm component; 61. detecting a second shell; 611. a second accommodating groove; 62. a second detection rod; 63. a second bearing plate; 64. a second pressure bearing spring; 65. triggering an alarm II; 66. and a second mounting seat.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a large-span cable-stayed bridge framing type steel box girder. Referring to fig. 1 and 2, large-span draws bridge framing formula steel box girder to one side, including steel box girder main part 1, the bearing is at base 2 of 1 bottom surface of steel box girder main part and supports support column 5 in 2 bottom surfaces of base, two are no less than to the quantity of support column 5, use two support columns 5 as an example and control even support in 2 bottom surfaces of base in this application embodiment, through hoist and mount steel box girder main part 1 to support column 5 on and fixed with base 2 interconnect, avoid steel box girder main part 1 direct and support column 5 interconnect to cause wearing and tearing scheduling problem, improve the protection to steel box girder main part 1.
Referring to fig. 1 and 2, steel box girder main part 1 includes roof 12 and bottom plate 11 from top to bottom in proper order, welded fastening a plurality of webs 13 and baffle 14 between roof 12 and the bottom plate 11, bottom plate 11 includes main bearing bottom plate 111 and welded fastening at the inclined carrier plate 112 of both ends about main bearing bottom plate 111, inclined carrier plate 112 and roof 12 form the spatial structure that longitudinal section is isosceles trapezoid, base 2's whole bearing appearance agrees with bottom plate 11 is whole mutually, bottom plate 11 and base 2 set up locating component 3 between relatively.
Referring to fig. 2 and 3, the positioning assembly 3 includes a plurality of first positioning rods 31 fixedly connected to the top surface of the main bearing bottom plate 111 and a plurality of second positioning rods 32 fixedly connected to the top surface of the inclined bearing plate 112, the first positioning rods 31 are sequentially and uniformly arranged along the length direction of the main bearing bottom plate 111, and the second positioning rods 32 are sequentially and uniformly arranged along the length direction of the inclined bearing plate 112.
Referring to fig. 2 and 3, the base 2 is provided with a first positioning groove 21 for clamping the first positioning rod 31 and a second positioning groove 22 for clamping the second positioning rod 32, and the extending directions of the first positioning rod 31 and the second positioning rod 32 are perpendicular to each other; two bearing plate 112 fixed connection owner bear bottom plate 111 backs, relative roof 12 forms the triangular support structure, operating personnel assembles owner and bears bottom plate 111, bearing plate 112 and base 2 time, a locating lever 31 joint corresponds constant head tank 21, two 32 joints of locating lever correspond constant head tank two 22, and the extending direction of a locating lever 31 intersects with two 32 mutually perpendicular of locating lever, thereby make a locating lever 31 and two 32 formation direction cross limiting displacement of locating lever, be favorable to strengthening owner and bear bottom plate 111, the stability of the relative base 2 of bearing plate 112.
Referring to fig. 1 and 3, the positioning assembly 3 further includes two first hanging rings 33 respectively fixed at two opposite ends of the base 2, the two first hanging rings 33 respectively correspond to two opposite ends of the two inclined bearing plates 112, the two opposite ends of the two inclined bearing plates 112 are respectively fixed with a plurality of second hanging rings 34, and the first hanging rings 33 and the second hanging rings 34 on the same side correspond to each other and are connected with the steel wire rope 35; the corresponding first hanging rings 33 and the second hanging rings 34 are connected through the steel wire ropes 35, the opposite positions of the base 2 and the inclined bearing plates 112 are further positioned at the opposite ends of the two inclined bearing plates 112, and the stability of the base 2 for supporting the steel box girder main body 1 is improved.
Referring to fig. 1 and 2, the web 13 includes a main web 131 fixed on the top surface of the main bottom bearing plate 111 and an inclined web 132 fixed on the top surface of the inclined bearing plate 112, the extending directions of the main web 131 and the inclined web 132 are both parallel to the width direction of the main bottom bearing plate 111, the distances between adjacent main webs 131 and adjacent inclined webs 132 are the same, the partition 14 includes an inclined partition 142 fixed between adjacent main webs 131 and inclined webs 132 and a main partition 141 fixed between adjacent main webs 131, the extending directions of the inclined partitions 142 and the main partitions 141 are parallel to the opposite directions of the two inclined bearing plates 112, the inclined partitions 142 and the main partitions 141 which are collinear along the length direction of the main bottom bearing plate 111 are in one group, and a plurality of groups of the main partitions 141 and the inclined partitions 142 are uniformly arranged along the width direction of the bottom plate 11; the main web 131, the inclined web 132, the main partition 141 and the inclined partition 142 are mutually crossed to form an empty box structure, which is beneficial to strengthening the structural stability supported between the main bearing bottom plate 111, the inclined bearing plate 112 and the top plate 12, and the empty box structure is beneficial to reducing the whole dead weight of the steel box girder and reducing the pressure bearing of hoisting and bearing the steel box girder.
Referring to fig. 1 and 2, a plurality of first reinforcing members are fixed on the bottom surface of the top plate 12, a plurality of second reinforcing members are fixed on the fixed surface of the bottom plate 11, the first reinforcing members are arranged to be first hollow rods 15 fixedly connected with the bottom surface of the top plate 12, the extending direction of the first hollow rods 15 is parallel to the extending direction of the main web 131, the first hollow rods 15 are sequentially and uniformly arranged along the two inclined bearing plates 112, the second reinforcing members are arranged to be main bearing ribs 113 fixedly connected with the top surface of the main bearing plate 111 and inclined ribs 114 fixedly connected with the top surface of the inclined bearing plates 112, the extending directions of the main bearing ribs 113 and the inclined ribs 114 are both parallel to the extending direction of the first hollow rods 15, the main bearing ribs 113 and the inclined ribs 114 are sequentially and uniformly arranged along the two inclined bearing plates 112, and a plurality of second hollow rods 16 are fixed on the opposite surface and the reverse surface of.
The ability that the roof 12 resisted the external force and warp is reinforceed to hollow rod 15 fixed connection on roof 12 after, improve the structural strength of roof 12, hollow rod 15 relies on self hollow structure to reduce the dead weight simultaneously, alleviate the whole weight of cooperation roof 12, a plurality of main ribs 113 and inclined rib 114 reinforce main bottom plate 111 and inclined carrier plate 112 and resist the ability that external force warp, improve the main structural strength who bears bottom plate 111 and inclined carrier plate 112, hollow rod two 16 strengthens the holistic ability that resists the external force and warp of main web 131, improve the structural strength of main web 131, hollow rod two 16 relies on self hollow structure to reduce the dead weight, alleviate the whole weight of cooperation main web 131, reduce the whole weight of steel box girder.
Referring to fig. 1 and 2, a first through hole 1411 is formed in the plate surface of the main partition plate 141, and a second through hole 1421 is formed in the plate surface of the inclined partition plate 142; the dead weight of the main partition plate 141 and the inclined partition plate 142 is reduced by the first through opening 1411 and the second through opening 1421, the dead weight of the steel box girder is further reduced, and the maintenance and filling reinforcing structure inside the steel box girder are convenient.
Referring to fig. 2 and 4, a plurality of pressure-bearing deformation detection alarm assemblies 4 are arranged between the bottom plate 11 and the top plate 12, each pressure-bearing deformation detection alarm assembly 4 comprises a first detection shell 41 fixed on the top surface of the first main bearing bottom plate 111, a first installation seat 46 is fixed at the bottom end of the first detection shell 41, the first detection shell 41 is welded on the first main bearing bottom plate 111 through the first installation seat 46, the bottom surface of the first installation seat 46 is clamped with the main bearing rib 113, a first accommodating groove 411 is longitudinally formed at the top end of the detection shell, a first detection rod 42 is longitudinally inserted in the first accommodating groove 411, the top end of the first detection rod 42 extends out of the first accommodating groove 411 and is fixed with a first bearing plate 43, a first pressure-bearing spring 44 is connected between the first bearing plate 43 and the top end of the first detection shell 41, the first pressure-bearing spring 44 is sleeved on the outer side of the first detection rod 42, a first trigger alarm 45 is fixed at the bottom end of the first detection rod, the first bearing plate 43 is clamped with the corresponding first hollow rod 15 and attached to the top plate 12, and a deformation space is reserved between the first detection rod 42 and the first trigger alarm 45.
Referring to fig. 1 and 2, a cross beam 51 is fixed between the two support columns 5, a damping bracket 52 is fixed between the support columns 5 and the base 2, the overall longitudinal section of the damping bracket 52 is in an inverted isosceles trapezoid shape, the contact area of the support columns 5 supporting the base 2 is increased, and a ribbed plate 53 is fixedly supported between the damping bracket 52 and the bottom surfaces of the left and right inclined upward parts of the base 2; rib plate 53 cooperation shock attenuation bracket 52 further steadily supports base 2, improves the whole stability of erectting of base 2 and anti vibration structural strength, and support column 5 has erect the back with base 2 bearing, and adjacent support column 5 further strengthens overall structure joint strength through crossbeam 51, enlarges the area of bearing base 2 through shock attenuation bracket 52, improves the structural stability that support column 5 supported base 2.
Referring to fig. 1 and 2, a second pressure-bearing deformation detection alarm assembly 6 is arranged on the top surface of the beam 51 opposite to the base 2, the second pressure-bearing deformation detection alarm assembly 6 comprises a second mounting seat 66 fixed at the bottom end of a second detection shell 61 fixed on the top surface of the beam 51, the second detection shell 61 is welded on the beam 51 through the second mounting seat 66, a second accommodating groove 611 is longitudinally formed at the top end of the second detection shell 61, a second detection rod 62 is longitudinally inserted in the second accommodating groove 611, the top end of the second detection rod 62 extends out of the second accommodating groove 611 and is fixed with a second support plate 63, a second pressure-bearing spring 64 is connected between the second support plate 63 and the top end of the second detection shell 61, the second pressure-bearing spring 64 is sleeved on the outer side of the second detection rod 62, a second trigger alarm 65 is fixed at the bottom end of the second detection rod 62 opposite to the bottom wall of the second accommodating groove 611, and the second support plate 63 is attached to, a deformation space is reserved between the second detection rod 62 and the second trigger alarm 65.
Two 63 bearing plate are attached on base 2 through the supporting role of two 64 bearing springs, when base 2 pressure-bearing is too big to take place deformation, two 63 bearing plate of base 2 extrusion downwards and two 64 compression bearing springs, two 62 orientation of test bar are received and are removed and touch trigger alarm two 65 in groove two 611 this moment, be favorable to taking place deformation in base 2 and in time report to the police the suggestion when damaged even, make things convenient for managers in time to discover and repair to deformation base 2, change etc., improve the security that 2 bearing steel box girder main parts of base 1 used.
The implementation principle of the broad-width steel box girder of the large-span cable-stayed bridge is as follows: an operator welds a plurality of hollow rods 15 on the bottom surface of the top plate 12 in advance, fixes a plurality of main bearing ribs 113 and inclined ribs 114 on the bottom plate 11, sequentially welds a main web plate 131, an inclined web plate 132, a main partition plate 141 and an inclined partition plate 142, welds a plurality of first mounting seats 46 and a detection shell 41, covers the top plate 12, clamps a plurality of first bearing plates 43 corresponding to the hollow rods 15 and attaches to the bottom surface of the top plate 12, welds and fixes the steel box girder main body 1, enhances the bearing structural strength of the steel box girder main body 1 and reduces the overall structural quality through the web plate 13 and the partition plate 14, the first bearing plates 43 are matched with a trigger alarm 45 to detect the bearing deformation condition of the top plate 12 in real time, timely prompts a manager to find and overhaul the corresponding position, improves the use safety of the steel box girder main body 1, pre-erects the support columns 5 and installs the base 2, hoists the steel box girder main body 1 and, The positioning rod II 32 is clamped with the positioning groove I21 and the positioning groove II 22, then the lifting ring I33 and the lifting ring II 34 are connected through the steel wire rope 35, the supporting end is directly installed and contacted with the bottom plate 11 when the steel box girder main body 1 is prevented from being erected, the protection of the steel box girder main body 1 is improved, finally the detection shell II 61 is welded on the cross beam 51, and the base 2 is supported through the bearing plate II 63, and the deformation condition of the base 2 is detected in real time through the matching triggering alarm II 65.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a large-span draws bridge framing formula steel box girder to one side which characterized in that: the steel box girder comprises a steel box girder main body (1) and a base (2) for supporting the steel box girder main body (1);
the steel box girder main body (1) comprises a bottom plate (11), a top plate (12) and a plurality of webs (13) and partition plates (14) which are arranged between the bottom plate (11) and the top plate (12);
a positioning component (3) for positioning the installation position of the bottom plate (11) is arranged between the bottom plate (11) and the base (2);
a plurality of first reinforcing pieces are arranged on the surface, facing the bottom plate (11), of the top plate (12), and a plurality of second reinforcing pieces are arranged on the surface, facing the top plate (12), of the bottom plate (11);
a plurality of first pressure-bearing deformation detection alarm assemblies (4) are arranged between the bottom plate (11) and the top plate (12).
2. The large-span cable-stayed bridge framing type steel box girder according to claim 1, characterized in that: the bottom plate (11) comprises a main bearing bottom plate (111) and an inclined bearing plate (112) connected to two opposite ends of the main bearing bottom plate (111), and the base (2) bears the main bearing bottom plate (111) and the inclined bearing plate (112);
locating component (3) include a plurality of fixed connection locating lever one (31) and a plurality of fixed connection of main bottom plate (111) locating lever two (32) of bearing plate (112), the confession has been seted up in base (2) locating groove one (21) of confession locating lever one (31) joint and confession locating groove two (22) of locating lever two (32) joint, just the extending direction of locating lever one (31) and locating lever two (32) is crossed mutually.
3. The large-span cable-stayed bridge framing type steel box girder according to claim 2, characterized in that: the positioning assembly (3) further comprises two first lifting rings (33) which are fixed to two ends of the base (2) in a back-to-back mode, the two first lifting rings (33) correspond to two ends of the inclined bearing plate (112) in a back-to-back mode respectively, the two ends of the inclined bearing plate (112) in the back-to-back mode are fixed with a plurality of second lifting rings (34) respectively, and the first lifting rings (33) and the second lifting rings (34) correspond to each other one by one and are connected with steel wire ropes (35).
4. The large-span cable-stayed bridge framing type steel box girder according to claim 2, characterized in that: the web (13) comprises a main web (131) fixed on the surface of the main bearing plate (111) facing the top plate (12) and an inclined web (132) fixed on the surface of the inclined bearing plate (112) facing the top plate (12), and the extending directions of the main web (131) and the inclined web (132) are perpendicular to the opposite directions of the two inclined bearing plates (112);
the partition (14) comprises an inclined partition (142) fixed between the adjacent main webs (131) and the inclined webs (132) and a main partition (141) fixed between the adjacent main webs (131), and the extending directions of the inclined partition (142) and the main partition (141) are parallel to the opposite directions of the two inclined bearing plates (112).
5. The large-span cable-stayed bridge framing type steel box girder according to claim 4, characterized in that: the plate surface of the main partition plate (141) is provided with a first through hole (1411), and the plate surface of the inclined partition plate (142) is provided with a second through hole (1421).
6. The large-span cable-stayed bridge framing type steel box girder according to claim 4, characterized in that: the first reinforcing piece is arranged to be fixedly connected with a first hollow rod (15) of the top plate (12), the extending direction of the first hollow rod (15) is parallel to the extending direction of the main web plate (131), and a plurality of first hollow rods (15) are sequentially and uniformly arranged along the two inclined bearing plates (112) oppositely;
the second reinforcing piece is fixedly connected with a main bearing rib (113) of the main bearing bottom plate (111) and an inclined rib (114) of the inclined bearing plate (112), the extending directions of the main bearing rib (113) and the inclined rib (114) are parallel to the extending direction of the first hollow rod (15), and the main bearing rib (113) and the inclined rib (114) are sequentially and uniformly arranged along the two opposite inclined bearing plates (112);
and a plurality of second hollow rods (16) are fixed on the opposite surface and the back surface of each adjacent main web plate (131).
7. The large-span cable-stayed bridge framing type steel box girder according to claim 5, characterized in that: the first pressure-bearing deformation detection alarm component (4) comprises a first detection shell (41) fixed on the surface of the main bearing plate (111) facing the top plate (12), one end of the first detection shell (41) departing from the main bearing bottom plate (111) faces one side of the main bearing bottom plate (111) and is provided with a first accommodating groove (411), a first detection rod (42) is inserted in the first accommodating groove (411), one end of the first detection rod (42) facing the top plate (12) extends out of the first accommodating groove (411) and is fixed with a first bearing plate (43), a first pressure-bearing spring (44) is connected between the first bearing plate (43) and one end of the first detection shell (41) departing from the top plate (12), and the first pressure bearing spring (44) is sleeved on the outer side of the first detection rod (42), a first trigger alarm (45) is fixed on the bottom wall of the first accommodating groove (411) relative to the first detection rod (42);
under the non-pressure state of the pressure-bearing spring I (44), the bearing plate I (43) is attached to the top plate (12), and a deformation interval is reserved between the detection rod I (42) and the trigger alarm I (45);
detect shell (41) orientation the one end of main bearing bottom plate (111) is fixed with mount pad (46), just mount pad (46) joint main bearing rib (113), bearing board (43) joint hollow rod (15).
8. The large-span cable-stayed bridge framing type steel box girder according to claim 2, characterized in that: base (2) deviate from one side of main bearing bottom plate (111) is supported and is no less than a pair of support column (5), is no less than a pair of support column (5) are along two inclined carrier plate (112) relative direction sets gradually, and adjacent two be fixed with crossbeam (51) between support column (5), support column (5) with be fixed with shock attenuation bracket (52) between base (2).
9. The large-span cable-stayed bridge framing type steel box girder according to claim 7, characterized in that: a second pressure-bearing deformation detection alarm assembly (6) is arranged between the cross beam (51) and the base (2), the second pressure-bearing deformation detection alarm assembly (6) comprises a second detection shell (61) fixed on the surface of the cross beam (51) facing the base (2), one end of the second detection shell (61) departing from the cross beam (51) faces one side of the cross beam (51) and is provided with a second accommodating groove (611), a second detection rod (62) is inserted in the second accommodating groove (611), one end of the second detection rod (62) facing the base (2) extends out of the second accommodating groove (611) and is fixed with a second bearing plate (63), a second pressure-bearing spring (64) is connected between the second bearing plate (63) and one end of the second detection shell (61) departing from the cross beam (51), and the second pressure-bearing spring (64) is sleeved on the outer side of the second detection rod (62), a second trigger alarm (65) is fixed on the bottom wall of the second accommodating groove (611) relative to the second detection rod (62);
and under the non-pressure state of the second pressure-bearing spring (64), the second support plate (63) is attached to the base (2), and a deformation interval is reserved between the second detection rod (62) and the second trigger alarm (65).
10. The large-span cable-stayed bridge framing type steel box girder according to claim 7, characterized in that: ribbed plates (53) are supported between the damping bracket (52) and the side of the base (2) which is far away from the inclined bearing plate (112).
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