CN203834692U - Connection joint structure of hybrid connected-wall steel columns and non-energy-dissipating steel short beams - Google Patents

Abstract

A connection node structure of a section steel column of a mixed coupled wall and a non-energy dissipation section steel short beam comprises a steel reinforcement framework poured in the mixed coupled wall, a section steel column positioned at the inner end part of the mixed coupled wall, and the non-energy-dissipation type steel short beam is connected with the outer side of the section steel column, the upper end part and the lower end part of the section steel column are protruded out of the mixed coupled wall, the non-energy-dissipation type steel short beam is fixed on the upper part of the section steel column along the length direction of the mixed coupled wall, one end of the section steel column connected with the non-energy-dissipation type steel short beam is poured in the mixed coupled wall, the other end of the section steel column is protruded out of the mixed coupled wall, the inner side, opposite to the non-energy-dissipation type steel short beam, of the section steel column is connected with an anti-node rotating type steel short beam, the anti-node rotating type steel short beam is poured in the mixed coupled wall, a group of steel bar connectors are horizontally fixed below the anti-node rotating type. The utility model discloses the node structure is connected safe and reliable, the atress is reasonable. Can be widely applied to mixed coupled wall structural systems.

Description

Connection joint structure of hybrid connected-wall steel columns and non-energy-dissipating steel short beams

technical field

The utility model relates to a mixed limb wall structure, in particular to a connection node structure in the mixed limb wall. the

Background technique

At present, with the continuous growth of urban population and the gradual shortage of urban land in the process of urbanization in my country, high-rise buildings have become an inevitable choice to solve this contradiction. Among them, the connected wall structure system is an indispensable element in the structure of high-rise buildings. According to the actual measurement data in the past, it can be found that the structural system of the connected wall not only inherits the advantages of low cost and high lateral stiffness of the simple shear wall project, but also reflects the yield energy consumption of the connecting beam and the cracks concentrated in the wall under the action of strong earthquakes. The bottom of the body has the advantage of reducing the cost of post-earthquake repairs. However, in the actual application process, due to the limitation of the functional requirements of the building, it is often difficult for traditional concrete coupling beams to meet the shear resistance requirements of the section, which has caused certain difficulties in design and construction. Compared with traditional connected-limb walls, hybrid connected-limb walls use steel connecting beams instead of concrete connecting beams, use steel columns instead of edge-constrained reinforced concrete concealed columns, and apply the theory of eccentrically supported energy-dissipating beams in current relevant codes and regulations, making the latter Compared with the former, it has better energy consumption capacity and continuous collapse resistance, and the assembly process is simple and convenient, and at the same time it is convenient to meet the requirements of building use. Therefore, the prefabricated mixed limb wall system not only has good seismic performance, but also realizes the simultaneous progress of factory prefabrication and on-site installation, which improves the on-site construction speed, reduces the use of on-site formwork and temporary supports, and protects the environment. Considering that the joints of steel columns and non-energy-dissipating beams must coordinate with the deformation of the composite wall, it is necessary to provide a safe and reliable connection method to meet the safety and quality of construction. However, the existing steel columns and non-energy-dissipating beams The connection construction is complicated, and the construction quality is not guaranteed. the

Utility model content

The purpose of this utility model is to provide a connection node structure between the steel column of the connected limb wall and the non-energy dissipating beam, to solve the technical problem of how to safely and reliably connect the steel column of the connected limb wall and the non-energy dissipating beam; The question of efficiency. the

In order to achieve the above object, the utility model adopts the following technical solutions:

A connection node structure of a hybrid connected-wall steel column and a non-energy-dissipating steel short beam, including a steel skeleton poured in the mixed-connected wall, a shaped steel column located at the inner end of the mixed-connected wall, and a connection with the outer side of the shaped steel column The short non-energy-dissipating steel beams, the upper and lower ends of the steel columns protrude from the mixed-body wall, the upper part of the steel-column fixes the short non-energy-dissipating steel beams along the length direction of the mixed-body wall, and the non-energy-dissipating One end of the energy-shaped steel short beam connecting the steel column is poured in the mixed limb wall, and the other end protrudes from the mixed limb wall.

The section steel column is connected with an anti-node rotation section steel short beam on the inner side opposite to the position of the non-energy dissipating section steel short beam, and the anti-node rotation section steel short beam is completely poured in the mixed limb wall, under the anti-node rotation beam, A group of reinforcing bar connectors are horizontally fixed along the center line, and the reinforcing bar connectors are fixedly connected with the anti-node rotation reinforcing bars arranged in the vertical direction. the

Shear bolts are fixed on the shaped steel column and the non-energy-dissipated shaped steel short beam. the

Transverse stiffeners are fixed on the shaped steel column. the

A stiffening panel is fixed at one end of the non-energy-dissipating steel short girder poured in the mixed-leg wall, and the outer side of the stiffened panel is flush with the side of the mixed-leg wall. the

One or more of the upper, lower, left, and right sides of the mixed limb wall is a keyway or a rough surface. the

The length of the non-energy-dissipating steel short girder protruding from the edge of the composite siding wall is in the range of 5 cm to 10 cm. the

The length range of the anti-node rotation section steel short beam is 40 cm to 70 cm. the

The distance between the steel bar connector and the edge of the anti-node rotation beam is 3 cm to 6 cm, and the distance between adjacent steel bar connectors is 10 cm to 20 cm. the

The shaped steel column is H-shaped steel or combined I-beam, and the non-energy-dissipating steel short beam is H-shaped steel or combined I-shaped steel. the

The anti-node rotation steel short beam is H-shaped steel or combined I-beam. the

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

The utility model overcomes the disadvantages of poor connection quality and low construction efficiency of the traditional connecting wall, and solves the technical problems of improving construction efficiency and ensuring construction quality.

The utility model is applied in the structure system of the mixed limb wall. According to the connection form of the unit steel column of the mixed limb wall and the node of the non-energy dissipating beam, based on the finite element theory, a finite element model is established to perform mechanical analysis on the nodes and verify the nodes. The reliability of the connection quality is ensured, and the force is reasonable: one side of the steel column is connected to a non-energy-dissipating beam, and the other side is connected to a short anti-node rotation steel beam. This structure is designed as a combination of a non-energy-dissipating beam and a hybrid wall The internal force transmission between them provides another effective way, which makes this connection more reliable and realizes the idea of multiple lines of defense required for earthquake resistance; in addition, the anti-node rotation steel short beam is connected with anti-node rotation steel bars below, The strength and ductility of the connection nodes are increased. This structure design reduces the cracks in the wall node area under the action of moderate earthquakes, and is also convenient for post-earthquake repairs; and under the action of large earthquakes, the structure has sufficient plastic deformation capacity , and at the same time, it can realize that the wall with the mixed limbs does not fall off, ensuring that the entire connection node structure will not be damaged in a large earthquake, and realizes the good seismic performance of the connection node structure. However, in the traditional composite structure, under repeated earthquakes, Cracks are prone to occur in the areas where steel columns and steel beams are embedded, and even parts of the wall and steel structure are peeled off, which seriously affects the seismic performance of the structure. the

The connection node structure of the hybrid wall-shaped steel column and the non-energy-dissipating beam of the utility model adopts a factory prefabricated method, and the steel bar connector can be welded on the joint-resistant section steel during the manufacturing process of the connection node structure of the section steel column and the non-energy-dissipating beam For the lower flange of the short beam, the anti-joint rotation steel bar can be screwed on the steel bar connector during the production process of the composite wall, that is, the fabrication of the connection node between the shaped steel column and the non-energy dissipating beam and the factory prefabrication of the composite wall can be carried out independently , In the process of making the mixed limb wall, the welding process is reduced, the construction speed is improved, and the guarantee is provided for the completion of the construction project on schedule. In the construction process, the assembly and combination of the structure reduces the amount of wet work on the concrete site, thereby reducing the use of formwork and temporary supports, thereby reducing the generation of construction waste, reducing construction costs, and ensuring construction efficiency; In addition, due to Sectional steel columns, non-energy-dissipating section steel short beam joints and hybrid connected-limb walls are all manufactured by the factory, and their quality is easy to guarantee. Therefore, the quality of the entire connection joint structure is also easy to control, which further ensures the construction quality; The assembly between them can be completed on the construction site. Therefore, the prefabricated construction of the connection node structure and the on-site assembly between the mixed limb walls can be carried out at the same time, which further ensures the construction efficiency. the

The utility model can be widely applied to the structure system of the mixed limb wall. the

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail. the

Fig. 1 is a schematic front view of the structure of the utility model. the

FIG. 2 is a schematic diagram of the A-A section structure in FIG. 1 . the

Reference signs: 1-mixed limb wall, 2-shaped steel column, 3-joint-resistant rotation-shaped steel short beam, 4-non-energy-dissipated steel short beam, 5-transverse stiffener, 6-stiffened panel, 7-steel connector , 8-anti-node rotation reinforcement, 9-steel skeleton, 10-shear studs, 11-keyway or rough surface. the

Detailed ways

The embodiment is shown in Fig. 1. The connection node structure of the hybrid connected-limb wall-type steel column and the non-energy-dissipating steel short beam includes a steel skeleton 9 poured in the mixed-limb connected-limb wall 1 and located at the inner end of the mixed-limb connected-limb wall 1. The steel column 2 at the top of the steel column 2, and the short non-energy-dissipating steel beam 4 connected to the outside of the steel column 2, the horizontal stiffener 5 is fixed on the steel column 2, and the steel column 2 and the short beam 4 of the non-energy-dissipating steel are fixed on the There are shear studs 10, and one or more of the four sides of the mixed limb wall 1 are rough or have key grooves in the horizontal direction. the

Both the upper and lower ends of the shaped steel column 2 protrude from the mixed limb wall 1, and the upper part of the shaped steel column 2 is fixed along the length direction of the mixed limb wall 1. One end of the beam 4 connected to the steel column 2 is poured in the composite connected wall 1, and the other end protrudes from the composite connected wall 1, and the length of the non-energy-dissipating steel short beam 4 protruding from the edge of the composite connected wall 1 is in the range of 5 cm to 10 cm. cm, the non-energy-dissipating steel short beam 4 is poured into one end of the composite siding wall 1 and fixed with a stiffening panel 6 , and the outer side of the stiffening panel 6 is flush with the side of the composite siding wall 1 . the

The section steel column 2 is connected with a node rotation-resistant section steel short beam 3 on the inner side opposite to the position of the non-energy dissipating section steel short beam 4, and the length range of the section anti-node rotation section steel short beam 3 is 40 cm to 70 cm. The anti-node rotation steel short beam 3 is completely poured in the mixed limb wall 1. A group of steel bar connectors 7 are horizontally fixed below the joint anti-rotation steel short beam 3 along the center line. The distance between the steel bar connectors 7 and the anti-node rotation steel The edge distance of the short beam 3 ranges from 3 cm to 6 cm, and the distance between adjacent steel bar connectors 7 ranges from 10 cm to 20 cm. The steel bar connectors 7 are fixedly connected to the anti-node rotation steel bars 8 arranged in the vertical direction, The anti-node rotation steel bar and the steel bar connector 7 are occluded and connected by screws, the length of the anti-node rotation steel bar 8 meets the seismic requirements, the diameter of the anti-node rotation steel bar 8 is not less than 16mm, and the material strength grade is second-grade steel or third-grade steel steel. the

The shaped steel column 2 is H-shaped steel or combined I-beam, and the material strength grade is Q345 steel; the non-energy-dissipating steel short beam 4 is H-shaped steel or combined I-shaped steel, and the material strength grade is Q345 steel; The rotating steel short beam 3 is H-shaped steel or combined I-beam, the material strength grade is Q345 steel, and the flange plate and web thickness are the same as those of the non-energy dissipating steel short beam 4 respectively. the

The stiffening panel 6 is a steel plate, the thickness of which is 0.5 to 1.0 times the thickness of the flange plate of the non-energy dissipating steel short beam 4, and the material strength grade is the same as that of the non-energy dissipating steel short beam 4; the transverse stiffener 5 is a steel plate, The flange plates corresponding to the non-energy dissipating steel short beam 4 and the anti-node rotation steel short beam 3 are welded between the two flange plates of the steel column 2, and their thickness is 0.5 to 1.0 of the thickness of the non-energy dissipating steel short beam 4 flange plate thickness times, the material strength grade is the same as that of the non-energy-dissipating steel short beam 4. the

The construction method of the connection node structure of the hybrid wall-shaped steel column of the utility model and the non-energy-dissipating beam, the specific steps are as follows:

Step 1, welding the transverse stiffener 5 to the section steel column 2, welding the steel bar connector 7 to the anti-node rotation section steel short beam 3, and welding the stiffening panel 6 to the non-energy dissipating section steel short beam 4, the three can be carried out simultaneously , to ensure work efficiency.

Step 2, correspondingly weld the non-energy-dissipating steel short beam 4 and the anti-node rotation steel short beam 3 on both sides of the steel column 2, wherein, if the steel column is a combined I-beam, the steel column is within the range of 500mm above and below the beam flange 1. Full penetration groove welds are used between the flange and the web of the steel column, which is a requirement for the welding of the flange and web of the steel column, and the distribution length of the full penetration groove welds is stipulated, that is, this type of welding The length is within the range of 500 mm above and below the non-energy-dissipating steel short beam 4 or the node rotating steel short beam 3, so far, the fabrication of the steel structure node is completed. the

Step 3: Bundle the reinforcement skeleton 9 inside the mixed limb wall 1 on the periphery of the shaped steel column 2, the non-energy-dissipating shaped steel short beam 4 and the nodal rotation-resistant steel short beam 3, and fix the nodal-rotation-resistant reinforcing bar 8 and the reinforcing bar connector 7. the

Step 4: Fix the concrete pouring formwork of the mixed limb wall 1 on the periphery of the shaped steel column 2, the non-energy-dissipating shaped steel short beam 4 and the anti-node rotation shaped steel short beam 3, and perform horizontal keyway or rough surface treatment on the upper, lower, left, and right sides. the

Step five, pouring the mixed limb wall 1. the

Step 6: After the concrete is poured and shaped, the mixed limb wall 1 is hoisted and demoulded through the prefabricated lifting ring. the

Step seven, transport the prefabricated mixed limb wall 1 to the construction site. the

Step 8: Repeat steps 1 to 7 to complete the prefabrication of all mixed limb walls and transport them to the construction site. the

In step nine, the on-site assembly between the hybrid connected limb walls is carried out, and the construction of the entire hybrid connected limb wall structure system is completed. the

Claims (9)

1. one kind is mixed the connecting joint structure of coupled wall steel column and non-energy dissipating shaped steel short beam, comprise and be cast in the cage of reinforcement (9) mixing in coupled wall (1), be positioned at the steel column (2) that mixes coupled wall (1) inner end, and the non-energy dissipating shaped steel short beam (4) being connected with steel column (2) outside, it is characterized in that: the upper and lower end parts of described steel column (2) all protrudes from mixes coupled wall (1), the top of described steel column (2) is along the fixing non-energy dissipating shaped steel short beam (4) of the length direction that mixes coupled wall (1), one end of described non-energy dissipating shaped steel short beam (4) connecting-type steel column (2) is cast in mixes in coupled wall (1), the outstanding coupled wall (1) that mixes of the other end,

Described steel column (2) is connected with anti-joint rotation shaped steel short beam (3) in the inner side relative with the position of non-energy dissipating shaped steel short beam (4), described anti-joint rotation shaped steel short beam (3) is cast in mixes in coupled wall (1) completely, below anti-joint rotation shaped steel short beam (3), be fixed with one group of reinforcing bar connector (7) along center line level, described reinforcing bar connector (7) is fixedly connected with the anti-joint rotation reinforcing bar (8) that vertical direction arranges;

On described steel column (2) and non-energy dissipating shaped steel short beam (4), be fixed with shearing resistance peg (10).

2. the connecting joint structure that mixes according to claim 1 coupled wall steel column and non-energy dissipating shaped steel short beam, is characterized in that: on described steel column (2), be fixed with transverse stiffener (5).

3. mix according to claim 1 the connecting joint structure of coupled wall steel column and non-energy dissipating shaped steel short beam, it is characterized in that: described non-energy dissipating shaped steel short beam (4) is cast in the one end of mixing in coupled wall (1) and is fixed with the panel of putting more energy into (6), described in the put more energy into lateral surface of panel (6) concordant with the side of mixing coupled wall (1).

4. the connecting joint structure that mixes according to claim 1 coupled wall steel column and non-energy dissipating shaped steel short beam, is characterized in that: one side or multiaspect in the four sides up and down of described mixing coupled wall (1) are keyway or matsurface (11).

5. the connecting joint structure that mixes according to claim 1 coupled wall steel column and non-energy dissipating shaped steel short beam, is characterized in that: the outstanding length range that mixes coupled wall (1) edge of described non-energy dissipating shaped steel short beam (4) is 5 centimetres～10 centimetres.

6. the connecting joint structure that mixes according to claim 1 coupled wall steel column and non-energy dissipating shaped steel short beam, is characterized in that: the length range of described anti-joint rotation shaped steel short beam (3) is 40 centimetres～70 centimetres.

7. mix according to claim 6 the connecting joint structure of coupled wall steel column and non-energy dissipating shaped steel short beam, it is characterized in that: the Edge Distance scope of described reinforcing bar connector (7) the anti-joint rotation beam of distance (3) is 3 centimetres～6 centimetres, and the spacing range of adjacent reinforcing bar connector (7) is 10 centimetres～20 centimetres.

8. according to the connecting joint structure of one of claim 1-7 described mixing coupled wall steel column and non-energy dissipating shaped steel short beam, it is characterized in that: described steel column (2) is H shaped steel or combined I-shaped steel, and described non-energy dissipating shaped steel short beam (4) is H shaped steel or combined I-shaped steel.

9. the connecting joint structure that mixes according to claim 8 coupled wall steel column and non-energy dissipating shaped steel short beam, is characterized in that: described anti-joint rotation shaped steel short beam (3) is H shaped steel or combined I-shaped steel.