CN209958493U

CN209958493U - C-shaped thin-wall section steel connecting node of assembled shear wall

Info

Publication number: CN209958493U
Application number: CN201920436995.4U
Authority: CN
Inventors: 林跃忠; 张星星; 贾肖肖
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-01-17
Anticipated expiration: 2029-04-02

Abstract

Shear force wall node replaces the reinforcing bar anchor with the welding of C font thin wall shaped steel structure, and two C font nature steel welding of vertical connection node become a whole to set up the bearing capacity that I-shaped steel post strengthens the node in inside, an assembled shear force wall C font thin wall shaped steel connected node includes: the shear wall is prefabricated in the horizontal direction and can be applied to connection of shear walls with different shapes, the C-shaped thin-wall section steel and the internal reinforcing steel bar of the shear wall are welded into a whole in the factory prefabrication process of the shear wall, two section steels at the joints are inwards bent into a C shape, the section steel columns are inserted and connected after hoisting and combining are completed in a construction site, two ends of each section steel column extend into the C-shaped thin-wall section steel, the two joints are welded into a whole, then concrete is injected into the whole site to form a whole, concrete is poured into the whole structure in the site to form a hidden column, and the joints form concrete cast-in-place joints containing steel frameworks in outer steel pipes.

Description

C-shaped thin-wall section steel connecting node of assembled shear wall

Technical Field

The invention belongs to the field of civil engineering and relates to a node structure of an assembly type concrete shear wall, which realizes the purposes of simplifying construction procedures, shortening construction period and improving rigidity and stability of nodes by changing the structure of a shear wall end.

Background

The prefabricated assembly type concrete shear wall structure technology is a relatively mature concrete structure prefabricated assembly technology in the world, the feasibility and the reliability of the technology are proved by experts in the related field, and in combination with the Chinese situation, China popularizes prefabricated assembly type buildings in the industrial and civil construction field.

At present, the assembly precision of the prefabricated assembly type shear wall in a factory is high, the structural strength stability coefficient is high, the requirements of various assembly types can be technically met, the strength and the stability of a connection node need to be guaranteed in the field connection process, the construction procedure needs to be simplified, and excessive field construction is avoided, so that the engineering quality is guaranteed.

Aiming at the defects of the fabricated shear wall node and the principle of convenient construction, the characteristics of site construction are summarized, and the fabricated concrete shear wall structure vertical C-shaped thin-wall section steel connecting node can relatively improve the strength and stability of the node, simplify the construction steps, avoid the site formwork support and form removal and the connection of the steel bar nodes, and can realize good shear wall connection only through site section steel welding.

Disclosure of Invention

The invention aims at designing a novel assembly type shear wall splicing technology, firstly, on the premise of meeting the stress of an assembly type shear wall structure, a novel shear wall connecting hidden column form is designed, the novel shear wall connecting hidden column has novel construction characteristics and stress mode, on-site construction only needs hoisting splicing and welding connection, concrete can be directly poured without formwork, in the construction process, after the hoisting and splicing are finished, only two pieces of C-shaped steel are welded into a whole, the novel connection mode is convenient for site construction, the defect that the grouting construction precision requirement of the steel bar sleeve is high is overcome, the on-site formwork support and form removal are not needed like the traditional mode, the construction process is simplified, the waste of manpower and machines and the environmental pollution are reduced, the hidden column is formed by the concrete and the profile steel together, and the requirements on strength and stability are met.

The utility model provides an assembled shear force wall C font thin-walled shaped steel connected node, comprises two precast concrete shear force walls: c-shaped thin-wall section steel, a connecting section steel column and a concrete cast-in-place column, wherein a first prefabricated shear wall and a second prefabricated shear wall in the horizontal direction are mixed, the C-shaped section steel is used for replacing the traditional steel bars at the end of the shear wall, two pieces of section steel are welded into a whole in site construction, and the C-shaped thin-wall section steel can be applied to in-line connection, T-shaped connection, L-shaped connection and cross-shaped connection of the assembled shear wall (as shown in the attached drawing 1).

A C-shaped thin-wall section steel connecting node of an assembled shear wall is characterized in that during on-site construction, two shear walls are connected and then inserted with a section steel column, and the section steel column and cast-in-place concrete form a hidden column.

The concrete connection mode of the shear wall is shown in fig. 2 (taking the straight-line shear wall connection as an example), the C-shaped thin-wall section steel and the internal reinforcing steel bars are welded together, the lap joint length of the reinforcing steel bars and the section steel meets the large value of 30mm or 1.5 times of the diameter of the reinforcing steel bars, and the section steel is connected with the wall body of the shear wall into a whole in the factory prefabricating process.

Drawings

Fig. 1 is a schematic view of field assembly, which includes a straight connection, a T-connection, an L-connection, and a cross-connection, where different forms of connecting section steel columns are inserted, and different forms of shear wall connections adopt different connecting section steel columns and different C-shaped node structures, and then concrete is cast in situ.

Fig. 2 shows the connection form of internal reinforcing bars and nodes of the shear wall (taking a straight shear wall connection as an example).

In fig. 2, ① is C-shaped thin-wall section steel, ② represents a welding joint of the C-shaped thin-wall section steel and a shear wall, ③ represents an i-shaped section steel column, ④ represents a diagonal weld between two shear walls, and ⑤ represents cast-in-place concrete.

Fig. 3 shows various forms of connecting section steel columns and C-shaped thin-walled section steel.

The specific implementation mode is as follows:

the utility model provides a vertical C font thin-walled steel connected node of assembled concrete shear wall structure, the biggest advantage lies in utilizing C font thin-walled steel to replace the reinforcing bar to carry out the connection of node, and shaped steel only needs in the connection process to weld junction shaped steel together, and inside does not have the steel bar connection, handles like this and can simplify the construction, and thin-walled steel replaces the mould, does not need the process of on-the-spot formwork and form removal.

The stress at the node is mainly born by a hidden column formed by I-shaped steel and cast-in-place concrete, the I-shaped steel and the shear wall form a whole through the concrete, the middle is not connected, and the construction procedures are reduced.

The C-shaped thin-wall steel and the I-shaped steel column required at the connecting point are simple in structural modeling and convenient to prefabricate in factories, the section steels with different sizes and sizes can be prefabricated according to engineering requirements, various connecting structures such as shear wall in-line connection, T-shaped connection, L-shaped connection and cross-shaped connection are met, the prefabrication degree in factories is high, and the steel column can be used on a large scale.

Claims

1. The C-shaped thin-wall steel connecting node of the assembled shear wall is characterized in that C-shaped thin-wall steel, a connecting section steel column, a concrete cast-in-place column, a first prefabricated shear wall and a second prefabricated shear wall are arranged along the horizontal direction, section steel at the end of the shear wall and steel bars inside the shear wall are welded into a whole, two ends of the section steel are bent inwards to form a C shape, and the section steel at the connecting part of the two shear walls is welded.

2. The fabricated shear wall C-shaped thin-walled steel connecting joint as claimed in claim 1, which comprises two vertically connected concrete shear wall structures, wherein the two shear wall structures are welded and connected through the C-shaped thin-walled steel structures at two ends.

3. The fabricated shear wall C-shaped thin-walled steel connecting node of claim 2, wherein the connecting section steel column is inserted into the node, and the outer section steel is wrapped to form a steel pipe, thereby forming a steel concrete structure.

4. The fabricated shear wall C-shaped thin-walled steel connecting joint according to claim 3, wherein the fabricated shear wall C-shaped thin-walled steel connecting joint is suitable for shear wall in-line connection, T-shaped connection, L-shaped connection and cross-shaped connection, and different connecting section steel columns are adopted for effective force transmission.