CN206545264U - Multi-defense-line anti-seismic self-resetting assembly type frame-swinging wall energy dissipation structure - Google Patents

Abstract

The utility model relates to the field of building construction, and discloses a multi-line anti-seismic self-resetting assembled frame-swing wall energy-consuming structure, which includes a frame structure and a swing wall structure, the frame structure is hinged with the swing wall, and the swing wall The bottom of the body is hinged with the foundation, and several controllable plastic hinge nodes are set on the frame structure. The controllable plastic hinge nodes include the short beam section at the column end connected with the concrete column pouring and the main beam embedded parts connected with the main beam pouring. The end of the beam section is a spherical groove, and the end of the main beam embedded part is a universal ball. The universal ball cooperates with the spherical groove to make the main beam embedded part and the short beam section at the column end hingedly connected; There are prestressed tendons, one end of the prestressed tendons is fixed to the foundation, and the other end is anchored to the swing wall. The utility model effectively solves the current problems of building damage concentration and excessive peak value of horizontal displacement, excessive residual deformation and vibration deformation of the frame-swing wall structure through three anti-seismic defense lines.

Description

A Multi-line Defense Seismic Self-resetting Assembled Frame-Swing Wall Energy Dissipating Structure

technical field

The utility model relates to the field of building structures, in particular to a multi-line anti-seismic self-resetting assembled frame-swing wall energy-consuming structure.

Background technique

The frame-swing wall structure is a new kind of earthquake-proof and disaster-reducing structural system in China. Many scholars have shown that the deformation between the layers of the frame-swaying wall structure is basically the same, and the structural damage tends to be uniform, which significantly improves the damage caused by the excessive concentration of building damage. It is easier to achieve the design criteria of "strong column weak beam" and "strong shear weak bending", which improves the seismic performance of the structure.

However, the frame-swing wall structure system relaxes the constraints between the wall and the foundation and the frame, making the overall horizontal deformation peak and residual deformation of the structure larger, which is very important for the safety, reliability and comfort of the structure. There are certain deficiencies.

Utility model content

The main purpose of this utility model is to solve the problems mentioned above, to provide a multi-line anti-seismic self-resetting assembled frame-swing wall energy-consuming structure, so as to solve the problem of building damage concentration and the peak value of the horizontal displacement of the frame-swing wall structure in the prior art. Large, excessive residual deformation, vibration deformation.

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

A multi-line anti-seismic self-resetting assembled frame-swing wall energy-dissipating structure, including a frame structure and a swing wall, the frame structure is hinged to the swing wall, the hinge is provided with a corner displacement damper, and the bottom of the swing wall is hinged to the foundation ; Several controllable plastic hinge nodes are set on the frame structure. The controllable plastic hinge nodes include the short beam section at the column end connected with the concrete column pouring and the main beam embedded part connected with the main beam pouring. The end of the short beam section at the column end is spherical Groove, the end of the main beam embedded part is a universal ball, and the universal ball is matched with the spherical groove to make the main beam embedded part and the short beam section at the end of the column hingedly connected; the swing wall is provided with prestressed tendons on both sides , one end of the prestressed tendon is fixed to the foundation, and the other end is anchored to the swing wall.

Furthermore, the controllable plastic hinge joint also includes two upper and lower composite steel plates connecting the short beam section at the column end and the embedded part of the main beam. Bolt holes are arranged on the composite steel plate, and the spherical groove end of the short beam section at the column end and the The universal ball ends of the embedded parts are provided with corresponding bolt holes, and the upper and lower combined steel plates connect the short beam section at the column end and the main beam embedded part through high-strength bolts.

Further, the cross section of the combined steel plate is U-shaped or L-shaped.

Further, the spherical groove end of the short beam section at the column end is a detachable structure.

Further, one end of the prestressed tendon is fixed to the foundation, and the other end is anchored to the top, middle or bottom layer of the swing wall.

Further, at least one bundle of prestressed tendons is arranged on each side of the swing wall.

Further, one end of the pre-embedded part of the main beam is a steel cage, which is fixedly connected with the main beam by pouring concrete.

Further, a tuned mass damper is provided on the frame structure, and the tuned mass damper includes a mass block, a spring, a damper and a fixing part, and a spring and a damper are respectively arranged between the mass block and the fixing part.

Further, the prestressed tendons (2) use 1×7 strands of φ ^s 15.2 high-strength and low-relaxation steel strands.

The utility model has the following beneficial effects:

(1) The hinge of the swing wall and the frame structure of the utility model is provided with a corner displacement damper, and the swing wall and the corner displacement damper can provide lateral support for the frame structure to ensure the overall energy consumption of the frame structure as a whole. The structure provides the first line of defense against earthquakes;

(2) Prestressed tendons are provided on both sides of the rocking wall of the utility model, and the prestressed tendons can provide self-resetting ability and energy dissipation capacity for the frame-swinging wall structure, and have the characteristics of self-recovery after an earthquake, so that the frame-swinging The wall structure can be put into use even after a major earthquake, providing a second line of anti-seismic defense for the structure;

(3) The frame structure of the utility model is provided with several controllable plastic hinge nodes, which greatly improves the overall energy consumption capacity of the frame-swing wall structure, realizes the ideal failure mode of the frame-swing wall, and provides a third way for the structure Anti-seismic defense line.

The utility model effectively solves the current problems of building damage concentration and frame-swing wall structure horizontal displacement peak value is too large, residual deformation is too large, and vibration deformation through the above three anti-seismic defense lines.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic diagram of the section structure of the controllable plastic hinge node in the utility model;

Fig. 3 is a schematic diagram of the structure of the short beam section at the end of the column in the utility model;

Fig. 4 is a structural schematic diagram of the main beam embedded part in the utility model;

Fig. 5 is a schematic diagram of the structure of the controllable plastic hinge node after assembly of the utility model;

Fig. 6 is a structural schematic diagram of the tuned mass damper of the present invention;

Wherein, the above drawings include the following reference signs: 1. Frame structure; 2. Swing wall; 3. Controllable plastic hinge joint; 4. Prestressed tendon; 5. Angular displacement damper; 7. Main beam embedded parts; 8. Spherical groove; 9. Universal ball; 10. Combined steel plate; 11. Bolt holes; 12. Mass block; 13. Spring; 14. Damper; 15. Fixing parts.

detailed description

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

Example 1

The energy-dissipating structure of the frame-swing wall of the utility model includes three anti-seismic defense lines, which will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, a multi-line anti-seismic self-resetting assembled frame-swing wall energy dissipation structure includes a frame structure 1 and a swing wall 2, the frame structure and the swing wall are hinged, and a corner displacement damper 5 is set at the hinge , the bottom of the rocking wall is hinged to the foundation, prestressed tendons 4 are arranged on both sides of the rocking wall, and a number of controllable plastic hinge nodes 3 are arranged on the frame structure;

A corner displacement damper is provided at the hinge of the swing wall and the frame structure. The swing wall and the corner displacement damper can provide lateral support for the frame structure to ensure the overall energy consumption of the frame structure. At the same time, setting the corner displacement damper can Enhancing the energy dissipation capacity of frame-swing wall structures. Swing walls and angular displacement dampers are the first line of anti-seismic defense;

Prestressed tendons are arranged on both sides of the rocking wall, and one end of the prestressed tendons is fixed to the foundation through the post-tensioning method, and the other end is anchored to the top of the rocking wall. It is connected to the foundation and exerts a downward force on the swinging wall through prestressed tendons, which can eliminate the high-order mode shape of the frame-swinging wall structure, weaken the torsional deformation of the structure, and provide the structure with a self-recovery ability after an earthquake Adding prestressed tendons can effectively reduce the horizontal offset and torsional offset of the structure under various loads. It is a safe, reliable, economical, convenient construction, and simple structure for vibration reduction and improvement of seismic performance. ; The prestressed tendons use 1×7 strands of φ ^s 15.2 high-strength and low-relaxation steel strands, and at least one bundle is installed on each side of the swing wall.

The prestressed tendons can provide self-resetting ability and energy dissipation capacity for the frame-swaying wall structure, and have the characteristics of self-recovery after an earthquake, so that the frame-swaying wall structure can be put into use even after a major earthquake. This is the second line of earthquake resistance.

A number of controllable plastic hinge nodes are set on the frame structure, as shown in Fig. 2, 3, and 4. The controllable plastic hinge nodes include the short beam section 6 at the column end and the embedded part 7 of the main beam. One end of the short beam section at the column end is connected to the concrete The column is connected by pouring, and the other end is a spherical groove 8. One end of the main beam embedded part is connected with the main beam pouring, and the other end is a universal ball 9. The universal ball is matched with the spherical groove to make the main beam embedded part and the column end Short beam section hinged connection;

As shown in Figure 5, in order to enable the overall structure to quickly recover the seismic performance after the earthquake, two upper and lower combined steel plates 10 connecting the short beam section at the end of the column and the embedded part of the main beam are added to the controllable plastic hinge node. Bolt holes 11 are set on the composite steel plate, and corresponding bolt holes are provided on the spherical groove end of the short beam section at the column end and the universal ball end of the main beam embedded part. The short beam section and the main beam embedded parts are connected together. Due to the existence of the upper and lower combined steel plates, under the earthquake, the deformation and energy consumption of the structure are concentrated on the combined steel plate, only the combined steel plate enters the plastic energy consumption, and the rest and the main structure are in the elastic range. After the earthquake, the combined steel plate can be replaced Realize the rapid recovery of the overall function of the structure. The controllable plastic hinge joint greatly improves the overall energy dissipation capacity of the frame-sway wall structure, and realizes the ideal failure mode of the frame-sway wall, which is the third line of earthquake resistance.

In order to place the universal ball in the spherical groove relatively easily during construction, the spherical groove end of the short beam section at the column end is designed as a detachable structure; in order to make the main beam of the main beam embedded part better fixed and connected, One end of the main beam embedded part is designed as a steel cage structure, which is connected with the main beam through concrete pouring; the section of the combined steel plate can be U-shaped or L-shaped.

Since the frame-swaying wall structure is prone to excessive peak value of horizontal displacement and large residual deformation under the action of external load, a tuned mass damper is also installed on the frame structure, and the tuned mass damper includes a mass block 12 and a spring 13 , a damper 14 and a fixed part 15, and a spring and a damper are respectively arranged between the mass block and the fixed part.

The tuned mass damper is set on the top of the structure, and the facilities on the frame-swaying wall structure can be transformed into a tuned mass damper. The tuned mass damper is used to adjust the vibration frequency to near the frequency of the main structure and change the resonance characteristics of the structure to achieve shock absorption. Effect. Installing tuned mass dampers is also an effective measure for frame-swing wall vibration control.

The frame-swing wall energy dissipation structure of the utility model can be assembled, and the plastic hinge joint is used as the split point to be split into concrete beams, concrete columns, beam-column joints, swing walls and other components, which can realize assembly construction and conform to vigorous development Prefabricated buildings, industrial development needs to promote the adjustment and upgrading of industrial structure.

Example 2

In this embodiment, one end of the prestressed tendon is fixed to the foundation, and the other end is anchored to the middle of the swing wall, and the rest are the same as in Embodiment 1.

Example 3

In this embodiment, one end of the prestressed tendon is fixed to the foundation, and the other end is anchored to the bottom layer of the swing wall, and the rest are the same as in Embodiment 1.

Of course, the above content is only a preferred embodiment of the present utility model, and cannot be considered as limiting the scope of embodiments of the present utility model. The utility model is not limited to the above-mentioned examples, and equal changes and improvements made by those skilled in the art within the essential scope of the utility model shall all belong to the scope covered by the patent of the utility model.

Claims (9)

1. A multi-line anti-seismic self-resetting assembled frame-swing wall energy dissipation structure is characterized in that it includes a frame structure (1) and a swing wall (2), and the frame structure (1) and the swing wall (2) wall Hinged, the angular displacement damper (5) is set at the hinge, the bottom of the rocking wall (2) is hinged with the foundation; a number of controllable plastic hinge nodes (3) are set on the frame structure (1), and the controllable plastic hinge nodes (3 ) includes the column-end short beam section (6) connected to the concrete column pouring and the main beam embedded part (7) connected to the main beam pouring, and the end of the column-end short beam section (6) is a spherical groove (8), The end of the main beam embedded part (7) is a universal ball (9), and the universal ball (9) cooperates with the spherical groove (8) to make the main beam embedded part (7) and the column end short beam section (6) ) hinged connection; the rocking wall (2) is provided with prestressed tendons (4) on both sides of the wall, one end of the prestressed tendons (4) is fixedly connected to the foundation, and the other end is anchored to the rocking wall (2). 2. The multi-line anti-seismic self-resetting assembled frame-swing wall energy dissipation structure according to claim 1, characterized in that the controllable plastic hinge joint (3) also includes a short beam section (6) at the end of the connecting column and a main The upper and lower combined steel plates (10) of the beam embedded part (7) are provided with bolt holes (11) on the combined steel plate (10), and the end of the spherical groove (8) of the short beam section (6) at the end of the column and the main beam The end of the universal ball (9) of the embedded part (7) is provided with corresponding bolt holes, and the upper and lower combined steel plates (10) connect the short beam section (6) at the end of the column and the embedded part of the main beam ( 7) Connect together. 3. The multi-line anti-seismic self-resetting assembled frame-swing wall energy-dissipating structure according to claim 2, characterized in that the section of the combined steel plate (10) is U-shaped or L-shaped. 4. The multi-line anti-seismic self-resetting assembled frame-swing wall energy dissipation structure according to claim 1, characterized in that the end of the spherical groove (8) of the short beam section (6) at the end of the column is a detachable structure . 5. The multi-line anti-seismic self-resetting assembled frame-swing wall energy dissipation structure according to claim 1, characterized in that one end of the prestressed tendon (4) is fixed to the foundation, and the other end is connected to the top of the swing wall (2) , middle or bottom layer anchoring. 6. The multi-line anti-seismic self-resetting assembled frame-swing wall energy dissipation structure according to claim 1, characterized in that at least one bundle of prestressed tendons (4) is arranged on each side of the swing wall (2). 7. The multi-line anti-seismic self-resetting assembled frame-swing wall energy-dissipating structure according to claim 1, characterized in that one end of the main beam embedded part (7) is a steel cage, which is fixedly connected to the main beam through concrete pouring . 8. The multi-line anti-seismic self-resetting assembled frame-swing wall energy-dissipating structure according to claim 1 is characterized in that, the frame structure (1) is provided with a tuned mass damper, and the tuned mass damper includes a mass block ( 12), spring (13), damper (14) and fixture (15), spring (13), damper (14) are respectively arranged between mass block (12) and fixture (15). 9. The multi-line anti-seismic self-resetting assembled frame-swing wall energy-dissipating structure according to claim 1, characterized in that the prestressed tendons (4) use 1×7 strands of φ ^s 15.2 high-strength and low-relaxation steel strands .