CN110306690A - Assembled node connection structure of aluminum alloy-lightweight concrete thin-wall beam column shear wall - Google Patents

Abstract

The invention discloses an aluminum alloy-lightweight concrete thin-walled beam-column shear wall assembly-type node connection structure, which is divided into a connection structure without concrete beams and a connection structure with concrete beams, both of which include an upper wall and a lower wall body, connectors and baffles; a cavity is reserved at the end of the prefabricated shear wall. The fittings are arranged in the hollow, the bottom of the connecting piece is fixed on the pre-embedded steel plate, the opening of the hollow is provided with a baffle, and the hollow is filled with grouting material. The invention can increase the vertical and horizontal constraint force of the node so as to improve the stress performance of the node. The invention innovates from the connection form of aluminum alloy-lightweight concrete thin-walled beam-column shear wall joints, has the advantages of simple design, convenient manufacture and installation, high degree of industrialization, and is suitable for the development of my country's construction industry.

Description

Aluminum alloy-lightweight concrete thin-walled beam-column shear wall assembly joint connection structure

technical field

The invention belongs to the field of civil engineering, and relates to a test platform, in particular to an aluminum alloy-light concrete thin-walled beam-column shear wall assembled node connection structure.

Background technique

A new type of aluminum alloy—lightweight concrete thin-wall beam-column shear wall is light in weight and is suitable for prefabricated buildings. However, the existing aluminum alloy structure has no high-strength bolt connections, and welding connections will reduce the bearing capacity of components, and there are mechanical defects such as residual stress and deformation. , It is not conducive to the development of aluminum alloy structure prefabricated buildings.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide an aluminum alloy-lightweight concrete thin-walled beam-column shear wall assembled node connection structure based on the principle of "speeding up the construction speed and improving the mechanical performance of the nodes".

The technical scheme adopted in the present invention is: an aluminum alloy-lightweight concrete thin-walled beam column shear wall assembled node connection structure, which is divided into a connection structure without concrete beams and a connection structure with concrete beams, and the above two connection structures include the upper wall Body, lower wall, connectors and baffles;

Reserve a cavity at the end of the prefabricated shear wall, the upper part of the cavity is the upper wall, the lower part of the cavity is the lower wall, and the steel plate is pre-embedded on the lower wall at the bottom of the cavity, and the upper wall and the lower wall are made of The aluminum alloy shell is filled with lightweight concrete;

The connecting piece is arranged in the cavity, the bottom of the connecting piece is fixed on the pre-embedded steel plate, the opening of the cavity is provided with a baffle plate, and the cavity is filled with grouting material;

In the non-concrete beam connection structure, when the baffle is vertically connected with the upper wall and the lower wall, a tongue-and-groove connection is adopted. The upper part of the baffle is provided with a grout outlet, and the lower part of the baffle is provided with a grouting port. Stiffeners are provided in the middle of the plate;

In the concrete beam connection structure, the connecting piece extends into the concrete beam, the upper part of the baffle is provided with a grout outlet, and the lower part of the baffle is provided with a grouting port.

Preferably, the connecting piece is a steel casting, and the baffle is an aluminum alloy casting, and its performance meets the structural requirements.

The wall of the present invention is prefabricated in a factory, and the upper and lower walls are assembled on site by hoisting. Before assembly, the connector is placed in the hole from the side and fixed on the pre-embedded steel plate by spot welding, and the baffle is placed on the At the opening of the cavity, the upper and lower walls are then assembled, and finally the reserved cavity is grouted. After the grout hardens and reaches the expected strength, the upper and lower walls can be assembled.

How the no-concrete beam connection works:

When the concrete beam joint connection is working, the way it bears the vertical load is that the load acts directly on the column end, the aluminum alloy thin wall and lightweight concrete jointly bear the vertical load, and the connector can bear part of the vertical bearing pressure. When the wall bears the horizontal load, the connector in the shear wall acts as a stirrup, which can inhibit the development of oblique cracks at the joints and reduce the width of the oblique cracks. When the short wall is subjected to longitudinal and horizontal loads, the two ends of the wall will be subjected to an uplift force, and the uplift force is borne by the bonding between the connector and the grouting material. When the baffle is vertically connected with the upper and lower walls, a tongue-and-groove connection is used, which can transfer the load between the walls, increase the sealing performance, and have a good waterproof effect. Stiffeners in the middle of the baffle prevent buckling of the baffle during grouting. The force mechanism of this connection method is clear, the force transmission path is clear, and at the same time, it meets the mechanical properties of the nodes, can realize the assembly between the modules of the structure, improve the assembly speed and quality of the components, and fully adapt to the requirements and characteristics of the prefabricated structural system.

How a concrete beam joint connection works:

When the concrete beam node connection is working, the difference from the above-mentioned non-concrete beam node connection is that it also bears the vertical load at the beam end. The vertical load at the beam end first acts on the aluminum alloy thin wall, and then passes through the aluminum alloy The interface cohesion between the thin wall and lightweight concrete, and the joint construction measures transmit part of the load to the core concrete, so that the steel pipe and concrete can work together. The transmission of stress is realized through the mechanical bite between the grouting material and the connector and the bonding force between the grouting material and the hole wall. The end of the concrete beam and the reserved cavity are integrally cast in place, which has good structural integrity, and the bearing capacity, ductility and seismic performance of the connecting nodes can be guaranteed. The part of the connector extending into the concrete beam can transfer part of the beam end shear force directly to the core concrete. The force mechanism of this connection method is clear, the force transmission path is clear, and at the same time, it meets the mechanical properties of the nodes, can realize the assembly between the modules of the structure, improve the assembly speed and quality of the components, and fully adapt to the requirements and characteristics of the prefabricated structural system.

Beneficial effects: the assembled node connection structure of the present invention can increase the vertical and horizontal restraint force of the node so as to improve the mechanical performance of the node. The invention innovates the connection form of the aluminum alloy-light concrete thin-walled beam column shear wall node, has the advantages of simple design, convenient manufacture and installation, high degree of industrialization, and is suitable for the development of my country's construction industry.

Description of drawings

Fig. 1 is aluminum alloy of the present invention-lightweight concrete thin-wall beam column shear wall sectional view;

Fig. 2 is that the present invention does not have concrete beam to connect shear wall joint schematic diagram;

Fig. 3 is a schematic diagram of the connector in Fig. 2;

Fig. 4 is the schematic diagram of baffle in Fig. 2;

Figure 5 is a top view of Figure 4;

Fig. 6 has concrete beam to connect shear wall node schematic diagram for the present invention;

Fig. 7 is a schematic diagram of the connector in Fig. 6;

Figure 8 is a schematic diagram of the baffle in Figure 6;

FIG. 9 is a top view of FIG. 8 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1-9: An aluminum alloy-lightweight concrete thin-walled beam-column shear wall assembly-type joint connection structure, which is divided into a structure without concrete beam connection and a structure with concrete beam connection. The above two connection structures include the upper wall Body 1, lower wall body 2, connector 3 and baffle plate 4;

A cavity is reserved at the end of the prefabricated shear wall. Above the cavity is the upper wall 1, below the cavity is the lower wall 2, and a steel plate 5 is pre-embedded on the lower wall 2 at the bottom of the cavity. The upper wall 1 and The lower wall 2 is composed of aluminum alloy casing 6 filled with lightweight concrete 7;

The connecting piece 3 is arranged in the cavity, the bottom of the connecting piece 3 is fixed on the embedded steel plate 5, a baffle plate 4 is provided at the opening of the cavity, and the cavity is filled with grouting material 8;

In the non-concrete beam connection structure, when the baffle 4 is vertically connected with the upper wall 1 and the lower wall 2, a tongue-and-groove connection is adopted, the upper part of the baffle 4 is provided with a slurry outlet 10, and the lower part of the baffle 4 A grouting port 11 is provided, and stiffeners are provided in the middle of the baffle plate 4;

In the concrete beam connection structure, the connector 3 extends into the concrete beam, the upper part of the baffle 4 is provided with a grout outlet 10 , and the lower part of the baffle 4 is provided with a grouting port 11 .

The connecting piece 3 is a steel casting, and the baffle plate 4 is an aluminum alloy casting. Its performance meets the structural requirements.

The wall of the present invention is prefabricated in a factory, and the upper and lower walls are assembled on site by hoisting. Before assembly, the connector is placed in the hole from the side and fixed on the pre-embedded steel plate by spot welding, and the baffle is placed on the At the opening of the cavity, the upper and lower walls are then assembled, and finally the reserved cavity is grouted. After the grout hardens and reaches the expected strength, the upper and lower walls can be assembled.

The embodiments of the patent of the present invention have been described in detail above with reference to the accompanying drawings, but the patent of the present invention is not limited to the described embodiments. For those of ordinary skill in the art, within the scope of the principles and technical ideas of the patent of the present invention, various changes, modifications, replacements and deformations to these embodiments still fall within the scope of protection of the patent of the present invention.

Claims (2)

1. a kind of aluminium alloy-lightweight concrete thin-walled beam column shear wall assembling type node connecting structure, it is characterised in that: be divided into No beams of concrete connecting structure and there is beams of concrete connecting structure, above two connecting structure includes upper wall body, lower walls Body, connector and baffle；

It is upper wall body above the cavity, cavity is below lower wall body, and in cavity in the reserved cavity in precast shear wall end The upper surface of bottom lower wall body pre-embedded steel slab, the upper wall body and lower wall body are by light filling coagulation in aluminum alloy casing Soil is constituted；

The connector is set in cavity, and the bottom of connector is fixed on pre-buried steel plate, is set at the hole in the cavity There is baffle, filled in cavities has grouting material；

In the no beams of concrete connecting structure, connected when the baffle is vertically connect with upper wall body, lower wall body using tongue and groove It connects, the baffle top is equipped with grout outlet, and baffle lower part is equipped with grouting mouth, is equipped with ribbed stiffener among baffle；

Described to have in beams of concrete connecting structure, the connector is extend into beams of concrete, and the baffle top is equipped with pulp Mouthful, baffle lower part is equipped with grouting mouth.

2. a kind of aluminium alloy according to claim 1-lightweight concrete thin-walled beam column shear wall assembling type node connects structure It makes, it is characterised in that: the connector is steel casting, and baffle is aluminium alloy castings.