CN205637120U - Assembly structure of precast concrete beam and steel core concrete column - Google Patents

Abstract

An assembly structure of prefabricated concrete beams and steel pipe concrete columns, including steel pipe concrete columns, steel pipe concrete corbels, prefabricated concrete beams, pre-embedded steel at beam ends, and connecting plates; The concrete corbel is stepped; the concrete-filled steel pipe corbel includes corbel steel and corbel concrete filled inside the corbel steel; multiple tension bolt holes are set on the side of the corbel steel; prefabricated concrete beams include beam end embedded steel and Prefabricated reinforced concrete, the pre-embedded section steel at the beam end is in the shape of an inverted ladder to match the shape of the steel pipe concrete corbel; the side of the pre-embedded section steel at the beam end is also provided with multiple tension bolt holes; the connecting plate is arranged on the corbel section steel and the beam end The side of the pre-embedded section steel is locked by multiple pull bolts. The utility model has high bearing capacity, good seismic ductility, good node energy dissipation capacity, convenient construction and good construction quality, and provides effective constraints on concrete.

Description

An assembly structure of prefabricated concrete beams and steel tube concrete columns

【Technical field】

The utility model belongs to the technical field of prefabricated assembled structures in civil engineering, in particular to an assembled structure of prefabricated concrete beams and steel tube concrete columns.

【Background technique】

The traditional cast-in-place construction method has a low degree of industrialization, poor construction conditions, time-consuming and labor-intensive, is not conducive to energy conservation and environmental protection, common quality problems are difficult to eradicate, and safety accidents also occur from time to time. The use of prefabricated structures can save energy, water, and materials, greatly reduce construction waste, reduce noise pollution, reduce labor consumption and intensity, effectively improve the construction environment, and improve project quality.

Most of the joints of traditional reinforced concrete beams and concrete-filled steel tube columns are connected by steel bars around them, and formwork needs to be installed on site. The binding and connection of steel bars are complicated and difficult to construct; the cross-sectional size of the joint joints is relatively large. In the joint assembly structure of the steel pipe concrete column connection, it is mainly connected to the steel beam. The connection is connected with the steel pipe outside the column by using end plates and bolts. The steel beam is prone to buckling and has poor fire performance.

In the connection between precast concrete beams and reinforced concrete columns, the core area of the joints is mainly anchored by steel bars and then poured concrete. This method requires wet work on site, and the columns still need to be connected by sleeve grouting. The construction is troublesome and the quality is difficult to guarantee.

【Content of invention】

The utility model provides an assembly structure of prefabricated concrete beams and steel pipe concrete columns with high bearing capacity and good seismic ductility. The assembly structure has good energy dissipation capacity of nodes, convenient construction and good construction quality, and provides effective constraints on concrete.

The utility model is achieved in that:

An assembly structure of prefabricated concrete beams and concrete-filled steel tube columns, including concrete-filled steel tube columns, concrete-filled steel tube corbels, precast concrete beams, pre-embedded section steel at beam ends, and connecting plates; it is characterized in that:

The side of the concrete-filled steel pipe column is welded with the concrete-filled steel pipe corbel, and the concrete-filled steel pipe corbel is stepped; the concrete-filled steel pipe corbel includes corbel steel and corbel concrete filled inside the corbel steel; A plurality of tension bolt holes are arranged on the side of the corbel section steel;

The prefabricated concrete beam includes pre-embedded section steel at the beam end and prefabricated reinforced concrete. There are multiple pull bolt holes;

The connecting plate is arranged on the side of the corbel steel and the embedded beam end steel, and is locked by a plurality of tension bolts.

Further, the connecting plate is stepped.

Further, the concrete-filled steel pipe column and the concrete-filled steel pipe corbel are connected through a concrete pouring hole, and the concrete inside the concrete-filled steel pipe column and the concrete inside the concrete-filled steel pipe corbel are integrated.

Further, the concrete-filled steel tube column, the corbel section steel, the embedded section steel at the beam end, and the connecting plate are all made of carbon steel, stainless steel, or fire-resistant steel.

Further, the concrete inside the steel pipe concrete column, the prefabricated concrete beam, and the corbel-shaped steel are all made of ordinary concrete, high-strength concrete, high-performance concrete, steel fiber concrete, recycled aggregate concrete, or lightweight aggregate concrete .

The utility model has the advantages of: the prefabricated concrete beam-concrete steel tube column assembly structure of the utility model does not need to add formwork and post-cast beam end concrete on site, and the assembled nodes are connected by tension bolts, which is convenient and fast in construction and high in quality. Reliable; the corbel is made of steel pipe concrete corbel, and the corbel concrete is restrained by the corbel steel, which improves the bearing capacity and avoids the punching effect of the stepped corbel; the pre-embedded steel at the beam end effectively avoids the binding of precast concrete beam reinforcement and The anchorage problem, and the concrete at the beam end is constrained by the embedded steel at the beam end, which improves the bearing capacity and ductility; the steel tube concrete corbel adopts a ladder shape, and the embedded steel at the beam end is an inverted ladder shape, which is convenient for shelving and node connection; the connecting plate and The tension bolts are arranged on the side, and there are no bolts on the upper and lower parts of the precast concrete beam section, which is convenient for setting up the floor slab or connecting the shear wall structure; the connection can form a semi-rigid node, which improves the energy dissipation capacity of the node, has good seismic ductility, and can control the plastic hinge at the same time position, so as to achieve the optimal failure mode, and truly realize the seismic design concept of strong columns and weak beams, strong nodes and weak members.

【Description of drawings】

The utility model will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is a three-dimensional structural schematic diagram of the assembled prefabricated concrete beam-concrete filled steel column of the present invention.

Fig. 2 is a structural schematic diagram of a steel pipe concrete column and a steel pipe concrete corbel in the utility model.

Fig. 3 is a structural schematic diagram of a steel pipe column in the utility model.

Fig. 4 is the structural representation of corbel section steel in the utility model.

Fig. 5 is a structural schematic diagram of the steel pipe concrete corbel in the utility model.

Fig. 6 is a structural schematic diagram of the prefabricated concrete beam in the utility model.

Fig. 7 is a structural schematic diagram of the embedded section steel of the prefabricated concrete beam in the utility model.

Fig. 8 is a structural schematic diagram of the connecting plate in the utility model.

Fig. 9 is a schematic diagram of the assembly process of the prefabricated concrete beam and the concrete filled steel tube column of the present invention.

Explanation of symbols in the figure:

1-steel tube concrete column; 11-steel tube column; 12-concrete column;

2-concrete steel pipe corbel; 21-corbel steel; 22-concrete corbel;

3- prefabricated concrete beam; 31-beam end embedded steel; 32- prefabricated reinforced concrete;

4-connecting plate; 5-pull bolt; 6-bolt hole; 7-concrete pouring hole.

【detailed description】

Please refer to Figures 1 to 9, an assembly structure of prefabricated concrete beams and steel tube concrete columns, including steel tube concrete columns 1, steel tube concrete corbels 2, precast concrete beams 3, and connecting plates 4;

The steel pipe concrete column 1 is composed of a steel pipe column 11 and a concrete column 12 filled into the steel pipe column 11;

The side of the concrete-filled steel pipe column 1 is welded with a concrete-filled steel pipe corbel 2, and the concrete-filled steel pipe corbel 2 is stepped; the concrete-filled steel pipe corbel 2 includes corbel steel 21 and corbel concrete 22 filled inside the corbel steel 21; the corbel A plurality of tension bolt holes 6 are arranged on the side of the section steel 21;

The precast concrete beam 3 includes pre-embedded section steel 31 at the beam end and prefabricated reinforced concrete 32. The pre-embedded section steel 31 at the beam end is in the shape of an inverted ladder to match the shape of the steel tube concrete corbel 2; Two pull bolt holes 6;

Wherein, steel pipe column 11 can be provided with concrete pouring hole 7 at the node core area height, as shown in Figure 3, concrete column 12 is filled into corbel section steel 21 inside by concrete pouring hole 7 when pouring concrete, forms corbel concrete 22; Concrete pouring hole 7 can not be offered, and corbel concrete 22 is poured separately. The steel pipe column 11 can adopt square, rectangular and circular cross-sections, and internal partitions or stiffeners can be arranged in the core area of the nodes as required.

The connecting plate 4 is stepped, and the pull bolt holes 6 are set at the designed positions, as shown in FIG. 8 .

Steel pipe column 11, corbel section steel 21, beam end embedded section steel 31, and connecting plate 4 can be made of carbon steel, stainless steel, or refractory steel.

Concrete in concrete column 12, corbel concrete 22, and prefabricated reinforced concrete 32 can be ordinary concrete, high-strength concrete, high-performance concrete, steel fiber concrete, recycled aggregate concrete, or lightweight aggregate concrete.

When assembling the joint, the inverted stepped beam end of the precast concrete beam 3 is rested on the steel tube concrete corbel 2, as shown in Figure 9, the two sides of the beam are fixed by the connecting plate 4 and the tension bolt 5. When assembling the joint, the inverted stepped beam end of the precast concrete beam 3 is rested on the steel tube concrete corbel 2, as shown in Figure 9, the two sides of the beam are fixed by the connecting plate 4 and the tension bolt 5.

The corbel concrete 22 and the prefabricated reinforced concrete 32 are pre-set in the pre-embedded section steel 31 with the tension bolt holes 6, and the screw rods of the tension bolts 5 can also be pre-embedded to stretch out and connect.

A prefabricated concrete beam-concrete steel tube column assembly node of the utility model does not need to add formwork and post-cast beam end concrete on site, and the assembly type node is connected by tension bolts 5, which is convenient and fast in construction and reliable in quality; the corbel is made of steel tube concrete The corbel 2 and the corbel concrete 22 are constrained by the corbel section steel 21, which improves the bearing capacity and avoids the punching effect of the stepped corbel; the pre-embedded section steel 31 at the beam end effectively avoids the binding and anchoring of the prefabricated concrete beam 3 steel bars problem, and the concrete at the beam end is constrained by the pre-embedded section steel 31 at the beam end, which improves the bearing capacity and ductility; the concrete-filled steel tube corbel 2 adopts a stepped shape, and the pre-embedded section steel 31 at the beam end is an inverted step shape, which is convenient for shelving and node connection; The slab 4 and the tension bolt 5 are arranged on the side, and there are no bolts on the upper and lower parts of the precast concrete beam 3 section, which is convenient for setting the floor slab or connecting the shear wall structure; the connection can form a semi-rigid node, which improves the energy dissipation capacity of the node and has good seismic ductility. At the same time, the position of the plastic hinge can be controlled, so as to achieve the optimal failure mode, and truly realize the seismic design concept of strong columns and weak beams, strong nodes and weak components.

The above-mentioned embodiments and drawings do not limit the utility model in any form, and any appropriate changes or modifications made by those skilled in the art should be regarded as not departing from the patent of the utility model.

Claims (5)

1. An assembly structure of a prefabricated concrete beam and a concrete-filled steel tube column, comprising a concrete-filled steel tube column, a concrete-filled steel tube corbel, a prefabricated concrete beam, pre-embedded section steel at the beam end, and a connecting plate; it is characterized in that: The side of the concrete-filled steel pipe column is welded with the concrete-filled steel pipe corbel, and the concrete-filled steel pipe corbel is stepped; the concrete-filled steel pipe corbel includes corbel steel and corbel concrete filled inside the corbel steel; A plurality of tension bolt holes are arranged on the side of the corbel section steel; The prefabricated concrete beam includes pre-embedded section steel at the beam end and prefabricated reinforced concrete. There are multiple pull bolt holes; The connecting plate is arranged on the side of the corbel steel and the embedded beam end steel, and is locked by a plurality of tension bolts. 2. An assembly structure of prefabricated concrete beams and steel pipe concrete columns as claimed in claim 1, characterized in that: the connecting plates are in the shape of steps. 3. The assembly structure of a prefabricated concrete beam and a concrete-filled steel tube column as claimed in claim 1, characterized in that: the concrete-filled steel tube column and the concrete-filled steel tube corbel are connected through a concrete pouring hole, and the The concrete inside the steel tube concrete column and the concrete inside the steel tube concrete corbel are integrated. 4. The assembly structure of a prefabricated concrete beam and a concrete-filled steel tube column as claimed in claim 1, characterized in that: the concrete-filled steel tube column, the corbel section steel, the pre-embedded section steel at the beam end, and the connecting plate All use carbon steel, stainless steel, or fire-resistant steel. 5. the assembly structure of a kind of prefabricated concrete beam and steel tube concrete column as claimed in claim 1, is characterized in that: described steel tube concrete column, described prefabricated concrete beam and the concrete inside of described corbel all adopt common Concrete, high strength concrete, high performance concrete, steel fiber concrete, recycled aggregate concrete, or lightweight aggregate concrete.