CN213234001U - Assembled steel-concrete combined beam connected by perforated steel plates - Google Patents
Assembled steel-concrete combined beam connected by perforated steel plates Download PDFInfo
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- CN213234001U CN213234001U CN202021959449.8U CN202021959449U CN213234001U CN 213234001 U CN213234001 U CN 213234001U CN 202021959449 U CN202021959449 U CN 202021959449U CN 213234001 U CN213234001 U CN 213234001U
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- trompil
- precast concrete
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Abstract
The utility model relates to a building construction field, concretely relates to adopt assembled steel-concrete composite beam of trompil steel sheet connection, including the girder, the top surface symmetry of girder can be dismantled and be connected with the trompil steel sheet, be connected with precast concrete board on the trompil steel sheet, the penetrating reinforcement that sets up horizontally is worn to be equipped with in precast concrete board's width direction, precast concrete board is last to have seted up the standing groove that opens down along its length direction symmetry, precast concrete board and the top that is located the standing groove on and is provided with interval distribution's slip casting hole, the longitudinal section of trompil steel sheet is L type structure, the horizontal part of trompil steel sheet passes through bolted connection with the girder, the vertical portion of trompil steel sheet is placed in the standing groove, the vertical portion of trompil steel sheet is provided with the groove that opens up, the penetrating; the method is used for solving the problems that the existing construction is complex, the field assembly is inconvenient, and the replacement is inconvenient if the existing construction is damaged.
Description
Technical Field
The utility model relates to a construction field, concretely relates to assembled steel-concrete composite beam for adopting trompil steel sheet to connect.
Background
The steel-concrete combined beam can fully exert the compression resistance of concrete materials and the tensile strength of steel, improve the bearing capacity of the structure, enhance the seismic performance of the structure and be more and more widely applied to the field of civil engineering. The perforated steel plate shear key (PBL connecting piece) is widely applied to a steel-concrete structure due to the advantages of good ductility, strong deformability and the like. The PBL connecting piece is composed of a steel plate with a circular hole, in-hole concrete and steel bars wrapped by the in-hole concrete, and the shearing resistance of the connecting piece is more inseparable with the in-hole connecting tenon except that the shearing resistance of the connecting piece is related to factors such as the types of the concrete and the steel bars, the thickness of the perforated steel plate and the like. However, in practical engineering, the opening diameter of the steel plate is generally below 60mm, so that the coarse aggregate is difficult to enter the hole in the concrete pouring process and directly influences the shear rigidity of the connecting piece. In addition, if the connecting pieces in the structure appear in a group form to resist shearing force, heavy steel bar penetrating work exists in the construction process, the construction is not facilitated, the existing concrete slab needs to be poured in place, and the construction is inconvenient.
In addition, the connection between the perforated steel plate and the steel structure is often realized by welding, a heat affected zone is formed at the welding position, and the fatigue performance of the component is affected easily along with welding defects; the residual stress generated by welding also influences the stress performance of the structure; the steel member to some welding performance relatively poor can increase the construction degree of difficulty, and more be unfavorable for its atress, and trompil steel sheet welds integratively with the steel construction, and inconvenient on-the-spot is assembled, if the damage appears, inconvenient change.
Disclosure of Invention
To the deficiency of the prior art, the utility model provides an adopt assembled steel-concrete composite beam that trompil steel sheet is connected for solving current construction complicacy, inconvenient on-the-spot assembly, if appear damaging, the problem of inconvenient change.
The technical scheme of the utility model is realized like this: the utility model provides an adopt assembled steel-concrete composite beam that trompil steel sheet is connected, including the girder, the top surface symmetry of girder can be dismantled and be connected with the trompil steel sheet, be connected with precast concrete board on the trompil steel sheet, the penetrating bar that the level set up is worn to be equipped with in precast concrete board's the width direction, precast concrete board is last to offer the decurrent standing groove of opening along its length direction symmetry, precast concrete board is last and the top that is located the standing groove is provided with interval distribution's slip casting hole, the longitudinal section of trompil steel sheet is L type structure, the horizontal part and the girder of trompil steel sheet pass through bolted connection, the vertical portion of trompil steel sheet is placed in the standing groove, the vertical portion of trompil steel sheet is provided with the ascending groove.
The main beam is an I-shaped beam.
The groove comprises a circular part and a rectangular part, the circular part is positioned below the rectangular part, and the groove is distributed at equal intervals along the length direction of the vertical part of the perforated steel plate.
The penetrating steel bars are distributed at intervals along the length direction of the precast concrete slab.
The high-strength epoxy mortar is filled in the grouting holes, the high-strength epoxy mortar is also filled in the placing groove and in the gaps between the main beam and the perforated steel plate and between the main beam and the precast concrete slab, and the high-strength epoxy mortar is also filled in the gaps between the main beam and the perforated steel plate and between the main beam and the precast concrete slab.
The main beam on seted up runway type through-hole, circular through-hole has been seted up to the horizontal part of trompil steel sheet, the bolt adopts friction type high strength bolt, the top surface that just is located the trompil steel sheet on the bolt is connected with the nut.
The cross section of the grouting hole is circular or rectangular.
The technical scheme of the utility model has following positive effect: the utility model adopts the precast concrete board, the cast-in-place is not needed, the construction period is shortened, and the construction economic cost is reduced; the main beam and the perforated steel plate are in assembled connection, and friction type high-strength bolt connection is adopted to replace welding, so that the influence of factors such as welding residual stress, welding defects and the like is avoided, and the maintenance and the replacement are convenient; the perforated steel plate is provided with a groove with an upward opening, so that the penetrating steel bars in the precast concrete plate can enter from the groove, the top surface of the precast concrete plate is provided with a plurality of grouting holes for pouring high-strength epoxy mortar, and the precast concrete plate, the perforated steel plate and the girder are fixedly connected.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the utility model discloses pour epoxy mortar's schematic structure.
Fig. 3 is a side view of a precast concrete panel.
Fig. 4 is a schematic structural view of an open-pore steel plate.
Fig. 5 is a schematic structural diagram of an embodiment.
Detailed Description
As shown in fig. 1 to 5, an assembled steel-concrete composite beam connected by perforated steel plates includes a main beam 1, the top surface of the main beam 1 is symmetrically detachably connected with perforated steel plates 2, the perforated steel plates 2 are connected with precast concrete plates 3, penetrating steel bars 4 horizontally arranged are arranged in the width direction of the precast concrete plates 3 in a penetrating manner, standing grooves 5 with downward openings are symmetrically arranged on the precast concrete plates 3 along the length direction of the precast concrete plates, grouting holes 6 are arranged at intervals at the tops of the standing grooves 5, the longitudinal section of each perforated steel plate 2 is of an L-shaped structure, the horizontal part of each perforated steel plate 2 is connected with the main beam 1 through bolts 7, the vertical part of each perforated steel plate 2 is arranged in the standing groove 5, the vertical part of each perforated steel plate 2 is provided with a groove 8 with an upward opening, and the penetrating steel bars 4 pass through the grooves 8 of the perforated steel plates 2.
The main beam 1 is an I-beam.
The grooves 8 comprise a circular part 9 and a rectangular part 10, the circular part 9 is positioned below the rectangular part 10, and the grooves 8 are distributed at equal intervals along the length direction of the vertical part of the perforated steel plate 2; the through reinforcement 4 arranged in the precast concrete plate 3 can enter the perforated steel plate 2 from the rectangular part 10 of the groove 8, and after the groove 8 is poured with the high-strength epoxy mortar, the groove 8 can form a tenon, the shape of the tenon is the same as that of the groove 8, the area of the tenon is increased, and the connection quality of the through reinforcement 4 and the perforated steel plate 2 is improved.
The penetrating reinforcing steel bars 4 are distributed at intervals along the length direction of the precast concrete slab 3.
Epoxy mortar is filled in the grouting holes 6, epoxy mortar 13 is filled in the placing groove 5 and the gaps between the through steel bars 4 and the perforated steel plates 2, epoxy mortar 13 is filled in the gaps between the main beam 1 and the perforated steel plates 2 and between the main beam 1 and the precast concrete plates 3, epoxy mortar is poured from the grouting holes 6, the gaps between the placing groove 5 and between the main beam 1 and the precast concrete plates 3 are filled with epoxy mortar, and concrete is not required to be manufactured on site by adopting the epoxy mortar, so that the construction steps are reduced; when the epoxy mortar is poured, as shown in fig. 5: and a positioning baffle 17 is arranged at each of two end parts of the main beam, the top surface of the positioning baffle 17 is connected with the bottom surface of the precast concrete plate 3, and the positioning baffle is removed after the epoxy mortar is solidified.
The main beam 1 is provided with a runway-shaped through hole, the horizontal part of the perforated steel plate 2 is provided with a circular through hole 12, and the bolt 7 is a friction-type high-strength bolt; the position of the length direction is conveniently adjusted by the runway-type through hole when the runway-type through hole is connected with the perforated steel plate 2, and the friction-type high-strength bolt is adopted for connection, so that the influence of factors such as welding residual stress and welding defects is avoided, and meanwhile, the runway-type through hole is convenient to maintain and replace.
The cross section of the grouting hole 6 is circular or rectangular.
Claims (7)
1. The utility model provides an adopt assembled steel-concrete composite beam that trompil steel sheet is connected, includes girder (1), its characterized in that: the top surface symmetry of girder (1) can be dismantled and be connected with trompil steel sheet (2), be connected with precast concrete board (3) on trompil steel sheet (2), wear to be equipped with penetrating reinforcement (4) that the level set up in precast concrete board (3), precast concrete board (3) are gone up and are seted up opening decurrent standing groove (5) along its length direction symmetry, precast concrete board (3) are gone up and are located the top of standing groove (5) and are provided with interval distribution's slip casting hole (6), the longitudinal section of trompil steel sheet (2) is L type structure, the horizontal part and girder (1) of trompil steel sheet (2) are connected through bolt (7), the vertical portion of trompil steel sheet (2) is placed in standing groove (5), the vertical portion of trompil steel sheet (2) is provided with opening ascending groove (8), penetrating reinforcement (4) pass groove (8) of trompil steel sheet (2.
2. The assembled steel-concrete composite beam connected by the open-pore steel plates according to claim 1, wherein: the main beam (1) is an I-beam.
3. The assembled steel-concrete composite beam connected by the open-pore steel plates according to claim 1, wherein: the groove (8) comprises a circular part (9) and a rectangular part (10), the circular part (9) is located below the rectangular part (10), and the groove (8) is distributed at equal intervals along the length direction of the vertical part of the perforated steel plate (2).
4. The assembled steel-concrete composite beam connected by the open-pore steel plates according to claim 1, wherein: the penetrating steel bars (4) are distributed at intervals along the length direction of the precast concrete slab (3).
5. The assembled steel-concrete composite beam connected by the open-pore steel plates according to claim 1, wherein: the high-strength epoxy mortar is filled in the grouting holes (6), the high-strength epoxy mortar (13) is filled in the placing grooves (5) and in the gaps between the through reinforcing steel bars (4) and the perforated steel plates (2), and the high-strength epoxy mortar (13) is filled in the gaps between the main beams (1) and the perforated steel plates (2) and between the main beams and the precast concrete plates (3).
6. The assembled steel-concrete composite beam connected by the open-pore steel plates according to claim 1, wherein: girder (1) on seted up runway type through-hole, circular through-hole (12) have been seted up to the horizontal part of trompil steel sheet (2), bolt (7) adopt friction type high strength bolt, the top surface that just is located trompil steel sheet (2) on bolt (7) is connected with the nut.
7. The assembled steel-concrete composite beam connected by the open-pore steel plates according to claim 1, wherein: the cross section of the grouting hole (6) is circular or rectangular.
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CN202021959449.8U CN213234001U (en) | 2020-09-09 | 2020-09-09 | Assembled steel-concrete combined beam connected by perforated steel plates |
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CN202021959449.8U CN213234001U (en) | 2020-09-09 | 2020-09-09 | Assembled steel-concrete combined beam connected by perforated steel plates |
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