CN210658698U - Connector of semi-prefabricated reinforced concrete column node unit and beam column - Google Patents
Connector of semi-prefabricated reinforced concrete column node unit and beam column Download PDFInfo
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- CN210658698U CN210658698U CN201920722270.1U CN201920722270U CN210658698U CN 210658698 U CN210658698 U CN 210658698U CN 201920722270 U CN201920722270 U CN 201920722270U CN 210658698 U CN210658698 U CN 210658698U
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Abstract
The utility model discloses a connector of semi-precast reinforced concrete post node unit and beam column belongs to building technical field and structural engineering technical field. The semi-prefabricated reinforced concrete column joint unit designed by the utility model is pre-provided with the cross steel beam and the I-shaped steel which plays roles of supporting and strengthening is arranged at the upper and lower wing edges, the cross steel beam can be used as an anti-lateral movement frame, the lateral movement stability in the installation process is ensured, and the installation speed is accelerated; between the post, use prefabricated intercolumniation connecting piece and the end plate of two upper and lower posts to use bolted connection, need not indulge the muffjoint between the muscle, the installation is more convenient and stable. The utility model discloses a half prefabricated reinforced concrete post node unit is as a half prefabricated whole unit, and industrialization, modularization degree are high to through the accessory standardization of connecting between the post and being connected between the roof beam, make this design at mill machining efficiency high, more accord with the mode of the future industrialization development of building trade.
Description
Technical Field
The utility model relates to a connector of semi-precast reinforced concrete post node unit and beam column belongs to building technical field and structural engineering technical field.
Background
In the building process, the operation of the cast-in-place concrete technology is widely applied in the development process of the bearing industry in China, in the actual operation process, the development of the bearing industry in China starts relatively late, and the use modes of foreign advanced technologies and mature technologies are quickly transferred to China, so that the development and application of the concrete joining technology in China are promoted. The application of the concrete cast-in-place technology in China gradually moves to a more excellent direction through the development and the reform of generations of people, and the appearance of the concrete cast-in-place technology makes valuable contribution to the economic construction of people in the actual construction process. However, with the development of modernization, various disadvantages of cast-in-place concrete are gradually revealed, such as the need for a large amount of forms and labor, and the disadvantage of environment. The fabricated structure will be the trend in the future.
And parts of components of the assembly type structure are processed and manufactured in a factory in advance, so that the assembly type building has the advantages of environmental protection, energy conservation and the like. And the construction period of the prefabricated assembly type concrete frame structure is short, and the prefabricated assembly type building components are directly assembled on site after being prefabricated, so that wet operation is less, the time consumed by site manufacture can be greatly reduced, and the construction period is shortened. The prefabricated concrete frame structure can also save turnover materials, and some parts of the prefabricated parts can replace cast-in-place templates. Therefore, the use of prefabricated concrete frames will become more important in the future.
The existing prefabricated concrete frame structure still has the following problems:
first, the degree of industrialization is low, and various parts are not standardized.
Secondly, the integrity is poor, the integrity of the assembled type is slightly lower compared with the integrity of the full cast-in-place mode, the assembled type integrity is mainly embodied in a connecting part, and the rigidity of the connecting part is lower compared with the rigidity of the full cast-in-place mode.
Third, the difficulty of connection, connection problems at the time of field installation due to tolerances in the manufacture of the prefabricated parts, the skill of the installer, environmental factors at the time, and the like.
Based on the above, a prefabricated structure system with strong integrity, simple and convenient installation and high rigidity is urgently needed to be designed.
SUMMERY OF THE UTILITY MODEL
[ problem ] to
The to-be-solved technical problem of the utility model is that the wholeness that current prefabricated assembly type concrete frame structure exists is poor, the problem that difficulty and rigidity are low is connected to the existing length.
[ solution ]
In order to solve the technical problem, the utility model provides a connector of semi-precast reinforced concrete column node unit and beam column. The semi-prefabricated reinforced concrete column joint unit designed by the utility model is pre-provided with the cross steel beam and the I-shaped steel which plays roles of supporting and strengthening is arranged at the upper and lower wing edges, the cross steel beam can be used as an anti-lateral movement frame, the lateral movement stability in the installation process is ensured, and the installation speed is accelerated; between the post, use prefabricated intercolumniation connecting piece and the end plate of two upper and lower posts to use bolted connection, need not indulge the muffjoint between the muscle, the installation is more convenient and stable.
Firstly, the utility model provides a semi-precast reinforced concrete column node unit, including two upper and lower end plates 4, be located between two upper and lower end plates 4 and with first end plate 28 and the second end plate 29 of end plate 4 parallel, weld in two upper and lower end plates 4 and pass first end plate 28 and a plurality of first longitudinal muscle 2 of second end plate 29 perpendicularly, a plurality of first stirrup 3 around first longitudinal muscle 2 and pack in between upper end plate 4, first end plate 28, first longitudinal muscle 2 first and stirrup 3, and lower end plate 4, second end plate 29, the concrete 1 between first longitudinal muscle 2 and the first stirrup 3; a first steel beam 5, a second steel beam 6 and H-shaped steel 22 are arranged between the first end plate 28 and the second end plate 29, wherein the first steel beam 5 and the second steel beam 6 are welded in a cross shape, and the H-shaped steel 22 is welded at the position, far away from a steel beam web, of the overlapping position of the upper flange and the lower flange of the first steel beam 5 and the second steel beam 6; one end of the H-shaped steel 22 is welded to the first steel beam 5 or the second steel beam 6, and the other end is welded to the first end plate 28 or the second end plate 29.
In an embodiment of the present invention, a plurality of first bolt holes 14 are respectively disposed on the upper flange and the lower flange of the first steel beam 5; and a plurality of third bolt holes 23 are respectively arranged on the upper flange and the lower flange on the second steel beam 6.
In an embodiment of the present invention, the end plate 4 is composed of an end steel plate 16 and four anchoring bars 17, the anchoring bars 17 are anchored inside the concrete 1, and the second bolt holes 20 are arranged on the end steel plate 16.
In an embodiment of the present invention, the first end plate 28 is formed by a first end steel plate and four first anchoring steel bars, wherein the first anchoring steel bars are anchored inside the concrete, and the first end steel plate has a plurality of holes to allow the first longitudinal bars 2 to pass through.
The utility model discloses an in an embodiment, second end plate 29 is enough by second end steel sheet and four second anchor reinforcing bars, wherein, the second anchor reinforcing bar anchor is inside the concrete, second end steel sheet has a plurality of holes to hold first vertical muscle 2 and pass.
In one embodiment of the present invention, the end plate 4, the first end plate 28 and the second end plate 29 are preferably identical in shape and size.
The utility model discloses an in the embodiment, when first girder steel 5 and second girder steel 6 are the cross welding, the size of first girder steel 5 and second girder steel 6 is inconsistent, the upper and lower pterygoid lamina of the less girder steel of size respectively with the welding of the upper and lower pterygoid lamina of the great girder steel of size and weld in the inside of the great girder steel of size.
Secondly, the utility model provides a connector of above-mentioned semi-precast reinforced concrete column node unit and shaped steel concrete beam, the shaped steel concrete beam includes second concrete 11 and pre-buried third girder steel 7, a plurality of second vertical muscle 9, a plurality of second stirrup 10 in second concrete 11 inside, wherein, the tip of third girder steel 7 and second vertical muscle 9 surpasss outside second concrete 11, is equipped with a plurality of bolt holes on the top flange and the bottom flange of third girder steel 7, the top flange and the bottom flange of third girder steel 7 and the top flange and the bottom flange of first girder steel 5 are connected by first connecting plate 12 to connect first girder steel 5, third girder steel 7 and first connecting plate 12 as an organic whole through first bolt 15, the web of first girder steel 5 and the web of third girder steel 7 are connected through maintenance connecting piece 13, second vertical muscle 9 has a section length in the department of crossing with semi-precast reinforced concrete column node unit, and the joint of the semi-prefabricated reinforced concrete column node unit and the semi-prefabricated steel reinforced concrete beam is formed by pouring concrete at one time.
In an embodiment of the present invention, the second longitudinal rib 9 has a curvature at the end of the anchoring length.
In an embodiment of the present invention, at least two first stirrups 3 are surrounded on the first longitudinal bar 2 between the first end plate 28 and the second end plate 29; the bend of the anchoring length of the second longitudinal rib 9 is hooked on the first stirrup 3.
The utility model discloses an in an embodiment, it is preferred, second stirrup 10 has a crotch in the second position department of indulging muscle 9, can hang on the second indulges muscle 9, and the crotch size is according to indulging the muscle size value.
In one embodiment of the present invention, the retention connector 13 is welded to the web of the first steel beam 5 and the web of the third steel beam 7; the maintenance connecting piece 13 comprises first angle steel 24 of welding on the 5 webs of first girder steel, second angle steel 25 and straight screw rod 26 on the 7 webs of welding third girder steel, wherein be equipped with a plurality of U type recess on the angle steel face perpendicular with the 5 webs of first girder steel on the first angle steel 24, be equipped with a plurality of bolt hole on the angle steel face perpendicular with the 7 webs of third girder steel on the second angle steel 25, straight screw rod 26 passes through the bolt hole and places in U type recess.
The utility model discloses an in an embodiment, the quantity, the position of bolt hole are unanimous with U type recess, and the size less than or equal to U type recess of bolt hole so that straight screw rod 26 can just can put into in the U type recess through the bolt hole.
Thirdly, the utility model provides a construction method of the above-mentioned semi-precast reinforced concrete column node unit and connector of shaped steel concrete beam, the method is for connecting the bottom flange of third girder steel 7, the bottom flange of first girder steel 5 and first connecting steel plate 12 with first bolt 15 earlier, and then connect the top flange of third girder steel 7, the top flange of first girder steel 5 and first connecting steel plate 12 with first bolt 15, later, pass second angle steel 25 on third girder steel 7 with straight screw 26, and anchor, then shelve the recess in first angle steel 24 on first girder steel 5 with straight screw 26 opposite side, anchor after fixing a position; and then bending the tail end of the second longitudinal bar 9 extending into the joint by a section of anchoring length or hooking the bent tail end on a certain first stirrup 3, and finally pouring concrete once to connect the semi-prefabricated reinforced concrete column joint unit and the semi-prefabricated reinforced concrete beam into a whole.
Fourth, the utility model provides a connector between above-mentioned semi-precast reinforced concrete column node unit post works as when being connected between the earth pillar of semi-precast reinforced concrete column node unit, connect through connecting piece 8 between the post, connecting piece 8 is located between the post on the face that anchor reinforcing bar 17 was kept away from to tip steel sheet 16, connecting piece 8 includes vertical cross steel sheet 18 and welds respectively at eight horizontal triangle-shaped steel sheets 19 at the adjacent top edge of cross steel sheet 18 and adjacent lower limb between the post, be equipped with a plurality of second bolt hole 20 on the horizontal triangle-shaped steel sheet 19, second bolt 21 passes second bolt hole 20 and makes the inter-post connecting piece 8 be connected with the tip steel sheet 16 of reserving the bolt hole.
In an embodiment of the present invention, the vertical cross steel plate 10 is a cross steel plate formed by splicing (welding) vertical steel plates.
The utility model discloses an in the embodiment, after connecting piece 8 has connected two upper and lower earth pillar units between the post, pour the packing with the concrete, make its and post unit cross-section parallel and level.
In an embodiment of the present invention, the dimension of the cross plate 18 is selected according to the dimension of the end plate 4, and the length of the cross plate 18 is smaller than the length of the diagonal of the end plate 5.
In an embodiment of the present invention, the size of the transverse triangular steel plate 19 is selected according to the size of the cross steel plate 18.
Fifth, the utility model also provides a construction method between above-mentioned semi-precast reinforced concrete column node unit post, the method is: the inter-column connecting piece 8 is connected with the end steel plate 16 in the lower earth column end plate 4 through the second bolt hole 20 by using the second bolt 21, the inter-column connecting piece 8 is connected with the upper earth column end plate 4 by using the same method, and finally, the gap in the inter-column connecting piece 8 is filled by using concrete.
[ advantageous effects ]
(1) The semi-prefabricated reinforced concrete column joint unit designed by the utility model is taken as a semi-prefabricated integral unit, the industrialization and modularization degree is high, and the fittings for connecting columns and beams are standardized, so that the design has high processing efficiency in factories and is more in line with the future industrialized development mode of the building industry; the utility model discloses a half prefabricated reinforced concrete column node unit major part process is accomplished at the mill, and the quality is guaranteed and the construction of being convenient for can reduce the building rubbish that the site operation produced. The utility model is suitable for an industrial production accords with current assembly type structure's trend.
(2) The utility model discloses a semi-precast reinforced concrete post node unit can fix a position the girder steel through the recess of straight screw rod card on the angle steel when erection joint for the installation is more stable convenient and accelerated the installation rate, through the anchor of straight screw rod both ends nut, and the bolted connection of edge of a wing steel sheet about the girder steel, make girder steel and node formation rigid connection, let moment of flexure on the girder steel and the better node of transmitting of shear force, make the performance atress performance that the node can be better.
(3) The utility model adopts a semi-prefabricated mode at the node, and adopts an integrated pouring mode after the installation in place on site; reinforcing connectors are used in the connection between the columns and the gaps are filled with concrete; when the beam column is connected, the semi-prefabricated beam end extending outwards at the node and the semi-prefabricated beam end are connected with the upper flange, the lower flange and the web plate through bolts, and then the beam column and the upper flange are integrally poured. It sees from above several points that the utility model relates to a semi-precast reinforced concrete post-shaped steel concrete beam column node's wholeness is better.
(4) The utility model discloses a semi-prefabricated reinforced concrete post-shaped steel concrete beam column node unit has arranged the cross girder steel in advance and has arranged the I-steel that plays support and additional strengthening in upper and lower flange department, and because the difficulty of installing a horizontal supporting beam in the installation, general prefabricated construction can't install like steel frame is quick. The cross steel beam can be used as an anti-lateral-movement frame, so that the lateral movement stability in the installation process is ensured, and the installation speed is accelerated; between the columns, a prefabricated inter-column connecting piece is connected with the end plates of the upper column and the lower column by bolts, and because the longitudinal ribs of each column are cut off and welded on the end plates, sleeve connection between the longitudinal ribs is not needed; at the girder steel with the utility model discloses a joint unit installs earlier down connection plate and provides one for the girder steel and shelves the position and make the installation more convenient and stable when connecting. To sum up the utility model discloses certain advantage has been embodied when the installation.
(5) The semi-prefabricated reinforced concrete column-section steel concrete beam column joint unit designed by the utility model adopts a semi-prefabricated mode at the joint, and then is integrally poured, so that the rigidity of the joint is enhanced; the semi-prefabricated steel beam and the node unit are in bolted connection and integrally cast at the upper flange, the lower flange and the web plate, so that the rigidity of the beam end is enhanced; the inter-column connecting members and the concrete filled between the columns reinforce the connection between the columns. The utility model discloses a rigidity of each junction can be strengthened effectively to prefabricated reinforced concrete post-shaped steel concrete beam column node unit, makes each junction have better atress performance and deformability.
Drawings
Fig. 1 is a schematic view of the cross-section structure of the connector of the joint unit of the semi-prefabricated reinforced concrete column and the beam column of the present invention.
Fig. 2 is the overall structure schematic diagram of the connector of the semi-prefabricated reinforced concrete column node unit and the beam column of the utility model.
Fig. 3 is a schematic view of the connecting member between the end plate and the column according to the present invention.
Fig. 4 is a schematic view of the fixing and connecting member between beams according to the present invention.
Fig. 5 is the utility model discloses a node H shaped steel and girder steel be connected the schematic diagram.
In the figure, 1 — first concrete; 2-first longitudinal bar; 3-a first stirrup; 4-end plate; 5-a first steel beam; 6-a second steel beam; 7-a third steel beam; 8-inter-column connectors; 9-second longitudinal ribs; 10-a second stirrup; 11-second concrete; 12-a first connecting steel plate; 13-retention connecting piece; 14 — first bolt hole; 15-a first bolt; 16-end steel plate; 17-anchoring the reinforcing steel bars; 18-cross steel plate; 19-triangular steel plate; 20 — a second bolt hole; 21-a second bolt; 22-H section steel; 23-third bolt hole; 24-first angle steel; 25-second angle steel; 26-straight screw; 27-a nut; 28 — a first end plate; 29 — second end plate.
Detailed Description
The technical scheme of the utility model is explained in detail with the attached drawings as follows:
for the purpose of more clearly understanding the technical solution, purpose and effect of the present invention, the present invention is now described with reference to the accompanying drawings and examples:
the following examples refer to the common concrete as C40 concrete, every 1m3The concrete contains 185kg of water, 420kg of cement, 572kg of sand and 1273kg of stones.
The detection methods referred to in the following examples are as follows:
the node limit bearing capacity detection method comprises the following steps:
and carrying out ultimate bearing capacity test research on the semi-prefabricated reinforced concrete beam column joint unit, and adopting a pseudo-static force loading experiment. The column head and the column foot adopt a plane hinge connection mode to simulate the boundary condition of the recurved point. The test piece is pre-pressed twice by using a vertical jack arranged at the top of the column, and then vertical axial pressure is applied to a preset load in two stages, wherein the load is 0.5N and 1.0N respectively. And after the application of each level of load is finished, keeping the load for 1min and collecting data. And the beam end support is installed after the vertical preset axial force is applied, so that extra internal force cannot be introduced into the beam end in the process of applying the axial force, and the beam end also adopts a hinged connection mode. And finally, applying low-cycle reciprocating load to the column end until the test piece fails, wherein the column jacking shaft force is kept constant in the whole loading process. The loading adopts displacement control, and displacement rotation angles are 1/1000, 1/800, 1/500, 1/400 and 1/300, and each stage of the cycle is carried out once; the displacement angles were 1/200, 1/150, 1/100, 1/75, 1/50, 1/35, 1/30, 1/25, 1/20 with 3 cycles per stage.
1 displacement meter is respectively arranged at the top and the beam end of the test piece column to measure the displacement in the loading process; 1 foil gage is arranged along length direction to each muscle, stirrup are indulged in the node region, and every side of I-steel and girder steel is along indulging 2 foil gages of horizontal arrangement, and 3 strain rosettes are arranged along diagonal direction on the node surface.
Example 1: semi-prefabricated reinforced concrete beam column node unit
As shown in fig. 1, a semi-prefabricated reinforced concrete beam-column node unit comprises an upper end plate 4, a lower end plate 4, a first end plate 28 and a second end plate 29 which are positioned between the upper end plate 4 and the lower end plate 4 and are parallel to the end plates 4, a plurality of first longitudinal ribs 2 which are welded on the upper end plate 4 and the lower end plate 4 and vertically penetrate through the first end plate 28 and the second end plate 29, a plurality of first stirrups 3 which surround the first longitudinal ribs 2, and concrete 1 which is filled between the upper end plate 4, the first end plate 28, the first longitudinal ribs 2, the first stirrups 3, and between the lower end plate 4, the second end plate 28, the first longitudinal ribs 2 and the first stirrups 3; a first steel beam 5, a second steel beam 6 and H-shaped steel 22 are arranged between the first end plate 28 and the second end plate 29, wherein the first steel beam 5 and the second steel beam 6 are welded in a cross shape, and the H-shaped steel 22 is welded at the position, far away from a steel beam web, of the overlapping position of the upper flange and the lower flange of the first steel beam 5 and the second steel beam 6; one end of the H-shaped steel 22 is welded to the first steel beam 5 or the second steel beam 6, and the other end is welded to the first end plate 28 or the second end plate 29.
Preferably, a plurality of first bolt holes 14 are respectively arranged on the upper flange and the lower flange of the first steel beam 5; and a plurality of third bolt holes 23 are respectively arranged on the upper flange and the lower flange on the second steel beam 6.
Preferably, the end plate 4 is formed by an end steel plate 16 and four anchoring bars 17, the anchoring bars 17 being anchored inside the concrete 1, a second bolt hole 20 being arranged in the end steel plate 16.
Preferably, the first end plate 28 is formed by a first end steel plate and four first anchoring steel bars, wherein the first anchoring steel bars are anchored in the concrete, and the first end steel plate has a plurality of holes for the first longitudinal bars 2 to pass through.
Preferably, the second end plate 29 is formed by a second end steel plate and four second anchoring steel bars, wherein the second anchoring steel bars are anchored inside the concrete, and the second end steel plate has a plurality of holes for the first longitudinal bars 2 to pass through.
Preferably, the end plate 4, the first end plate 28 and the second end plate 29 are of uniform shape and size.
Preferably, when first girder steel 5 and second girder steel 6 are the cross welding, the size of first girder steel 5 and second girder steel 6 is inconsistent, and the lower pterygoid lamina of the less girder steel of size welds and welds the inside at the great girder steel of size with the upper and lower pterygoid lamina of the great girder steel of size respectively.
The utility model discloses a semi-precast reinforced concrete beam column node unit is through increasing first end plate 28 and second end plate 29 at the node, and with first two steel sheets of indulging muscle 2 and passing this, has increased the wholeness ability of earth pillar for its inside atress is more even and dispersion.
Example 2: connector of semi-prefabricated section steel concrete beam column node unit and section steel concrete beam and construction method thereof
Referring to fig. 2, a connection body of a semi-prefabricated reinforced concrete column node unit and a reinforced concrete beam according to embodiment 1, the reinforced concrete beam includes a second concrete 11, a third steel beam 7 embedded in the second concrete 11, a plurality of second longitudinal bars 9, and a plurality of second stirrups 10, wherein ends of the third steel beam 7 and the second longitudinal bars 9 are protruded from the second concrete 11, a plurality of bolt holes are formed on an upper flange and a lower flange of the third steel beam 7, the upper flange and the lower flange of the third steel beam 7 and an upper flange and a lower flange of the first steel beam 5 are connected by a first connection steel plate 12, and the first steel beam 5, the third steel beam 7 and a first connection steel plate 12 are connected as a whole by a first bolt 15, a web of the first steel beam 5 and a web of the third steel beam 7 are connected by a retention connection 13, the second longitudinal bars 9 have a length at intersections with the semi-prefabricated reinforced concrete column node unit, and the joint of the semi-prefabricated reinforced concrete column node unit and the semi-prefabricated steel reinforced concrete beam is formed by pouring concrete at one time.
Preferably, the second longitudinal rib 9 has a curvature at the end of its anchoring length.
Preferably, at least two first stirrups 3 are surrounded on the first longitudinal reinforcement 2 between the first end plate 28 and the second end plate 29; the bend of the anchoring length of the second longitudinal rib 9 is hooked on the first stirrup 3.
Preferably, the second stirrup 10 has a hook at the position of the second longitudinal bar 9, and the hook can be hooked on the second longitudinal bar 9, and the size of the hook is selected according to the size of the longitudinal bar.
Preferably, the retention connector 13 is welded to the web of the first steel beam 5 and the web of the third steel beam 7; the maintenance connecting piece 13 comprises first angle steel 24 of welding on the 5 webs of first girder steel, second angle steel 25 and straight screw rod 26 on the 7 webs of welding third girder steel, wherein be equipped with a plurality of U type recess on the angle steel face perpendicular with the 5 webs of first girder steel on the first angle steel 24, be equipped with a plurality of bolt hole on the angle steel face perpendicular with the 7 webs of third girder steel on the second angle steel 25, straight screw rod 26 passes through the bolt hole and places in U type recess.
Preferably, the number and the position of the bolt holes are consistent with those of the U-shaped groove, and the size of the bolt holes is smaller than or equal to that of the U-shaped groove, so that the straight screw 26 can pass through the bolt holes and can be placed in the U-shaped groove.
The connection method comprises the following specific steps:
firstly, connecting the lower flange of the third steel beam 7, the lower flange of the first steel beam 5 and the first connecting steel plate 12 by using a first bolt 15, then connecting the upper flange of the third steel beam 7, the upper flange of the first steel beam 5 and the first connecting steel plate 12 by using a first bolt 15, then, penetrating a straight screw 26 through a second angle steel 25 on the third steel beam 7, anchoring, then, placing the other side of the straight screw 26 at a groove in a first angle steel 24 on the first steel beam 5, and then, anchoring after positioning; and then bending the tail end of the second longitudinal bar 9 extending into the joint by a section of anchoring length or hooking the bent tail end on a certain first stirrup 3, and finally pouring concrete once to connect the semi-prefabricated reinforced concrete column joint unit and the semi-prefabricated reinforced concrete beam into a whole.
Example 3: connector between unit columns of semi-prefabricated reinforced concrete column node and construction method thereof
As shown in fig. 3, when the soil columns of the semi-prefabricated reinforced concrete column node unit according to embodiment 1 are connected, the soil columns are connected through inter-column connectors 8, the inter-column connectors 8 are located on the surfaces of the end steel plates 16, which are far away from the anchor bars 17, the inter-column connectors 8 include vertical cross steel plates 18 and eight transverse triangular steel plates 19 respectively welded to the adjacent upper edges and the adjacent lower edges of the cross steel plates 18, a plurality of second bolt holes 20 are formed in the transverse triangular steel plates 19, and second bolts 21 pass through the second bolt holes 20 so that the inter-column connectors 8 are connected with the end steel plates 16 of the reserved bolt holes.
Preferably, after the upper and lower column units are connected by the inter-column connecting piece 8, concrete is poured and filled to make the cross section of the column unit flush with the cross section of the upper and lower column units.
Preferably, the size of the cross plate 18 is determined according to the size of the end plate 4, and the length of the cross plate 18 is smaller than the length of the diagonal line of the end plate 5.
Preferably, the size of the transverse triangular steel plate 19 is determined according to the size of the cross plate 18.
The connection method of the unit columns of the semi-precast reinforced concrete column nodes in the embodiment 1 comprises the following specific steps: the inter-column connecting piece 8 is connected with the end steel plate 16 in the lower earth column end plate 4 through the second bolt hole 20 by using the second bolt 21, the inter-column connecting piece 8 is connected with the upper earth column end plate 4 by using the same method, and finally, the gap in the inter-column connecting piece 8 is filled by using concrete.
Example 4: detection of semi-prefabricated section steel concrete beam column node unit
The method comprises the following specific steps:
12 steel bars with the diameter of 16mm are selected as longitudinal bars in the column, 2 steel bars with the diameter of 20mm are selected as longitudinal bars in the beam and are bent for a certain length, and the longitudinal bars are HRB400 steel bars and are symmetrically arranged; the hooping in the column adopts HPB 235-grade smooth round steel with the diameter of 6mm, the distance between hooping is 200mm, and the column end encryption area is 100 mm; the stirrup adopts HPB235 level smooth steel bar with the diameter of 6mm, the stirrup interval is 200mm, the beam end encryption area is 100mm, and the stirrup is bent to a certain length at the upper longitudinal rib according to the longitudinal rib diameter. The end plate is made of Q345 steel plate, and the section size is 500mm multiplied by 10 mm. According to the embodiment 1, the height of the semi-prefabricated reinforced concrete beam-column joint unit is 3000mm, the column section size is 400mm multiplied by 400mm, the beam section size is 300mm multiplied by 400mm, the section size of the steel beam is 300mm multiplied by 10mm, the section size of the steel beam is 280mm multiplied by 300mm multiplied by 10mm, and the section size of the steel beam of the I-shaped steel is 250mm multiplied by 10 mm. The semi-precast steel reinforced concrete beam was connected as in example 2. The concrete is integrally cast by C40 common concrete.
The test is carried out, and the detection result is as follows: the ultimate bearing capacity of the column end is 136.3kN, and the ultimate displacement is 88.9 mm.
Comparative example 1: construction method and detection of existing reinforced concrete beam column joint
The method comprises the following specific steps:
the prefabricated and prefabricated beams are processed in a factory, the preset reinforcing steel bars and the stirrups are arranged in the factory, the length of the reinforcing steel bars generally exceeds the length of the columns by a distance and are used for sleeve connection between the columns, then the prefabricated reinforced concrete columns are arranged and poured to form the prefabricated reinforced concrete column, the reinforcing steel bars extending outwards from the upper column section and the lower column section are connected through the sleeves, the two columns are connected, if the prefabricated and prefabricated beams are connected with the beams, the longitudinal bars of the beams are hooked on the reinforcing steel bars of the protruding columns or connected with the longitudinal bars of the opposite beams through the sleeves, and then the prefabricated and prefabricated beams are poured into a whole at the nodes (the joints of the longitudinal bars).
The size of the cross section of the beam is 250mm multiplied by 400mm, the size of the cross section of the column is 400mm multiplied by 400mm, HRB 400-grade steel bars are adopted as longitudinal bars, symmetrical steel bars are adopted, the upper part and the lower part of the steel bars in the beam are 2 steel bars with the diameter of 20mm, and the cross section of the steel bars in the column is 4 steel bars with the diameter of 22 mm. The hooping in the column adopts HPB 235-grade smooth round steel with the diameter of 6mm, the distance between hooping is 200mm, and the column end encryption area is 100 mm; the stirrup adopts HPB235 level smooth steel bar with the diameter of 6mm, the stirrup interval is 200mm, the beam end encryption area is 100mm, and the stirrup is bent to a certain length at the upper longitudinal rib according to the longitudinal rib diameter. The end plate is made of Q345 steel plate, and the section size is 500mm multiplied by 10 mm. The height of the test piece is 3000mm, and the concrete is C40 common concrete.
The test is carried out, and the detection result is as follows: the peak value of the load of the node hysteresis curve is 111.3kN, and the peak value of the displacement is 81.5 mm.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (7)
1. The semi-prefabricated reinforced concrete column node unit is characterized by comprising an upper end plate, a lower end plate (4), a first end plate (28) and a second end plate (29) which are positioned between the upper end plate and the lower end plate (4) and are parallel to the end plates (4), a plurality of first longitudinal ribs (2) which are welded on the upper end plate and the lower end plate (4) and vertically penetrate through the first end plate (28) and the second end plate (29), a plurality of first stirrups (3) which surround the first longitudinal ribs (2), and the node unit further comprises concrete (1) filled between the upper end plate (4), the first end plate (28), the first longitudinal ribs (2) and the first stirrups (3), and concrete (1) filled between the lower end plate (4), the second end plate (29), the first longitudinal ribs (2) and the first stirrups (3); a first steel beam (5), a second steel beam (6) and H-shaped steel (22) are mounted between the first end plate (28) and the second end plate (29), wherein the first steel beam (5) and the second steel beam (6) are welded in a cross shape, and the H-shaped steel (22) is welded at the position, far away from a steel beam web, of the overlapping position of the upper flange and the lower flange of the first steel beam (5) and the second steel beam (6); one end of the H-shaped steel (22) is welded with the first steel beam (5) or the second steel beam (6), and the other end of the H-shaped steel is welded with the first end plate (28) or the second end plate (29).
2. A semi-prefabricated reinforced concrete column node unit according to claim 1, characterized in that a number of first bolt holes (14) are arranged on the upper and lower flanges of the first steel beam (5), respectively; and a plurality of third bolt holes (23) are respectively arranged on the upper flange and the lower flange on the second steel beam (6).
3. Semi-prefabricated reinforced concrete column node unit according to claim 1 or 2, characterized in that said end plates (4) are constituted by end steel plates (16) and four anchoring bars (17), said anchoring bars (17) being anchored inside the concrete (1), second bolt holes (20) being arranged on the end steel plates (16); the first end plate (28) is formed by a first end steel plate and four first anchoring steel bars, wherein the first anchoring steel bars are anchored in the concrete; the second end plate (29) is formed by a second end steel plate and four second anchoring steel bars, and the second anchoring steel bars are anchored in the concrete.
4. A connecting body of a semi-prefabricated reinforced concrete column joint unit and a steel reinforced concrete beam is characterized in that the semi-prefabricated reinforced concrete column joint unit is the semi-prefabricated reinforced concrete column joint unit according to any one of claims 1 to 3, the steel reinforced concrete beam comprises second concrete (11), a third steel beam (7), a plurality of second longitudinal ribs (9) and a plurality of second stirrups (10), the third steel beam (7) and the second longitudinal ribs (9) are embedded in the second concrete (11), the end portions of the third steel beam (7) and the second longitudinal ribs (9) exceed the second concrete (11), a plurality of bolt holes are formed in the upper flange and the lower flange of the third steel beam (7), the upper flange and the lower flange of the third steel beam (7) are connected with the upper flange and the lower flange of the first steel beam (5) through first connecting steel plates (12), and the first steel beam (5) is connected with the lower flange through first bolts (15), The third steel beam (7) and the first connecting steel plate (12) are connected into a whole, a web plate of the first steel beam (5) is connected with a web plate of the third steel beam (7) through a fixing connecting piece (13), a section of anchoring length is arranged at the position where the second longitudinal rib (9) is intersected with the semi-prefabricated reinforced concrete column joint unit, and the joint of the semi-prefabricated reinforced concrete column joint unit and the semi-prefabricated reinforced concrete beam is formed by pouring concrete at one time.
5. A connection of a semi-prefabricated reinforced concrete column node unit with a profiled steel concrete beam according to claim 4, characterized in that said retention connection (13) is welded on the web of the first steel beam (5) and the web of the third steel beam (7); the retention connecting piece (13) is composed of a first angle steel (24) welded on a web plate of the first steel beam (5), a second angle steel (25) welded on a web plate of the third steel beam (7) and a straight screw (26), wherein a plurality of U-shaped grooves are formed in the first angle steel (24) and the angle steel surface vertical to the web plate of the first steel beam (5), a plurality of bolt holes are formed in the second angle steel (25) and the angle steel surface vertical to the web plate of the third steel beam (7), and the straight screw (26) is placed in the U-shaped grooves through the bolt holes.
6. A connector between semi-prefabricated reinforced concrete column node unit columns, which is characterized in that the semi-prefabricated reinforced concrete column node unit is the semi-prefabricated reinforced concrete column node unit according to any one of claims 1 to 3, when the earth columns of the semi-precast reinforced concrete column node units are connected, the earth columns are connected through an inter-column connecting piece (8), the inter-column connecting piece (8) is positioned on the surface of the end steel plate (16) far away from the anchoring steel bar (17), the inter-column connecting piece (8) comprises a vertical cross steel plate (18) and eight transverse triangular steel plates (19) which are respectively welded at the adjacent upper edge and the adjacent lower edge of the cross steel plate (18), the transverse triangular steel plate (19) is provided with a plurality of second bolt holes (20), and the second bolts (21) penetrate through the second bolt holes (20) to enable the connectors (8) between the columns to be connected with the end steel plates (16) with the reserved bolt holes.
7. The connector between the semi-prefabricated reinforced concrete column node units of claim 6, wherein after the upper and lower semi-prefabricated reinforced concrete column node units are connected by the inter-column connector (8), the inter-column connector is poured and filled with concrete so as to be flush with the cross section of the column unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920722270.1U CN210658698U (en) | 2019-05-20 | 2019-05-20 | Connector of semi-prefabricated reinforced concrete column node unit and beam column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920722270.1U CN210658698U (en) | 2019-05-20 | 2019-05-20 | Connector of semi-prefabricated reinforced concrete column node unit and beam column |
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| CN210658698U true CN210658698U (en) | 2020-06-02 |
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| CN201920722270.1U Expired - Fee Related CN210658698U (en) | 2019-05-20 | 2019-05-20 | Connector of semi-prefabricated reinforced concrete column node unit and beam column |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106978A (en) * | 2019-05-20 | 2019-08-09 | 江南大学 | Half prefabricated reinforced concrete column node unit of one kind and its application |
| CN112593628A (en) * | 2020-12-04 | 2021-04-02 | 苏州达康建筑科技有限公司 | Beam-end frame joint structure, mounting and replacing method and device thereof |
| CN114108813A (en) * | 2021-11-10 | 2022-03-01 | 河北工业大学 | Assembled steel connector beam column and column foundation splicing structure |
-
2019
- 2019-05-20 CN CN201920722270.1U patent/CN210658698U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106978A (en) * | 2019-05-20 | 2019-08-09 | 江南大学 | Half prefabricated reinforced concrete column node unit of one kind and its application |
| CN112593628A (en) * | 2020-12-04 | 2021-04-02 | 苏州达康建筑科技有限公司 | Beam-end frame joint structure, mounting and replacing method and device thereof |
| CN112593628B (en) * | 2020-12-04 | 2021-06-25 | 苏州达康建筑科技有限公司 | Beam-end frame joint structure, mounting and replacing method and device thereof |
| CN114108813A (en) * | 2021-11-10 | 2022-03-01 | 河北工业大学 | Assembled steel connector beam column and column foundation splicing structure |
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