CN206053037U - Prestressing force Self-resetting damage concentration is prefabricated waves shear wall for a kind of segmentation - Google Patents

Abstract

The utility model discloses a segmented prestressed self-resetting damage concentrated prefabricated swing shear wall, which comprises a plurality of walls arranged from bottom to top with damage concentration blocks at the corners, and each wall is provided with one end anchored in the In the wall, the other end protrudes from the unbonded prestressed tendon above the wall, and each wall is also provided with a reserved prestressed tendon channel, and an anchor is provided at the upper end of each reserved prestressed tendon channel. In the adjacent wall, the reserved prestressed tendon channel in the upper wall corresponds to the unbonded prestressed tendon set in the lower wall, and the unbonded prestressed tendon penetrates into the corresponding reserved prestressed tendon. After the stress tendon tunnel, its upper end is anchored by anchors. The utility model applies prestressing in sections, reduces construction difficulty, increases redundancy, avoids failure of prestressing in a certain place and causes overall structural damage, and utilizes the rocking, lifting, falling, and impacting behavior of the wall during an earthquake to reduce structural rigidity. Reduce the structural period and reduce the earthquake effect. At the same time realize the self-resetting function.

Description

A Segmented Prestressed Self-resetting Damage Concentrated Prefabricated Swing Shear Wall

technical field

The utility model relates to the technical field of civil engineering, in particular to a segmented prestressed self-resetting damage concentrated prefabricated swing shear wall.

Background technique

Earthquakes, as sudden natural disasters, often cause huge social impact and economic losses. Ordinary concrete buildings designed according to codes can no longer fully meet the growing seismic demand of buildings. The structure needs to be under the action of earthquakes and other disasters without excessive damage to the structure, and after the disaster can be repaired under reasonable technical and economic conditions to restore its expected function, that is, the damage controllable structure.

Structural damage is reflected in the overall effect of component damage, including three aspects: damage form, damage degree and damage distribution. The purpose of structural damage control is to limit the damage of the structure to the preset parts, and make the damage degree of these parts under the expected strong earthquake not exceed the predetermined limit, and the residual deformation of the structure after the earthquake does not exceed the predetermined limit. value.

Damage usually has the following two effects on the structure: the stiffness of the structure is reduced after damage, and the period is prolonged. This will generally increase the displacement response of the structure, but the seismic force on the structure will also be reduced; the damaged part often dissipates a certain amount of seismic input energy, thereby reducing the seismic response of the structure. Therefore, controlled damage is beneficial to the seismic performance of structures. The key to a damage-controllable structural system is to reasonably and effectively control the deformation mode and expected damage location of the structure.

In the actual earthquake damage analysis, the shear wall structure or the bottom shear wall in the frame shear wall structure is seriously damaged. The researchers found that the proper lifting of the foundation often helps to reduce the seismic action of the superstructure, thereby reducing the structural damage. Researchers in the United States and other countries took the lead in proposing the rocking system, which allows the structure or a certain part of the structure to sway under the action of an earthquake by relaxing the constraints between the structure and the foundation or components, and utilizes the concentrated deformation of certain parts of the structure caused by the swaying , to control the damage on the "swing interface".

The existing swing wall components are not scientifically connected with the main structure. At the same time, applying unbonded prestress from the bottom to the top of a whole wall not only limits the height of the storey, but also increases the unreliability of the structure during earthquakes.

Utility model content

Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a segmented prestressed self-resetting damage concentrated prefabricated swing shear wall.

Technical solution: In order to solve the above technical problems, a segmented prestressed self-resetting damaged centralized prefabricated swing shear wall of the utility model includes a plurality of walls arranged from bottom to top, and each wall is equipped with a protruding wall. There are unbonded prestressed tendons above the wall, and there are reserved prestressed tendon channels on each wall, and anchors are provided at the upper ends of each reserved prestressed tendon channel. In the adjacent wall, the upper The reserved prestressed tendon channel in the wall corresponds to the unbonded prestressed tendon set in the wall below it. After the unbonded prestressed tendon penetrates into the corresponding reserved prestressed tendon channel, its upper end Anchored by anchors.

Wherein, damage concentration blocks are arranged at the corners of each wall body.

Wherein, the damage concentrated blocks at the four corners of the wall are fiber-reinforced cement-based composite materials whose strength is lower than that of the main body of the wall, and are fixedly connected to the main body of the wall.

Among them, one end of the unbonded prestressed tendon protruding from the wall is anchored in the middle of the wall, and the other end is anchored in the top of the corresponding hole in the upper wall.

Among them, the wall and the beam of the main structure are not bonded, and are fixed by gravity and prestressed tendons passing through the wall and the beam.

Among them, the position where the wall has prestressed anchors and the concrete at the upper and lower ends of the wall are reinforced by spiral stirrups.

Beneficial effects: a segmented prestressed self-resetting damaged centralized prefabricated swing shear wall of the utility model has the following beneficial effects:

1. Prefabricated components are assembled on-site in the factory to meet the requirements of building industrialization. Prestressing is applied in sections to reduce construction difficulty, increase redundancy, and avoid damage to the overall structure caused by prestress failure in a certain place.

2. Locate the structural damage on the damage-concentrated block on the swing wall of the secondary structure to achieve damage control, protect the main part of the main structure and the swing wall of the secondary structure, and quickly repair it through the damage-concentrated block after the earthquake.

3. Utilizing the rocking, lifting, falling, and impacting behavior of the wall during the earthquake can reduce the structural stiffness, reduce the structural period, consume seismic energy, and reduce the seismic effect. At the same time, the self-resetting performance achieved by the prestress and the self-weight of the structure can effectively reduce the residual deformation of the structure.

Description of drawings

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

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the A-A direction sectional view of Fig. 2;

Fig. 4 is the B-B direction sectional view of Fig. 2;

Fig. 5 is the top view of wherein a kind of body of wall;

Fig. 6 is a bottom view of one of the walls shown in Fig. 5;

Fig. 7 is the C-C plane sectional view of body of wall shown in Fig. 5;

Fig. 8 is the D-D plane sectional view of body of wall shown in Fig. 5;

Figure 9 is a top view of another wall;

Fig. 10 is the bottom view of another kind of body of wall shown in Fig. 9;

Fig. 11 is the E-E plane sectional view of body of wall shown in Fig. 9;

Fig. 12 is a sectional view of the F-F plane of the wall shown in Fig. 9 .

detailed description

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

A segmented prestressed self-resetting damaged concentrated prefabricated swing shear wall of the present utility model includes a plurality of walls arranged from bottom to top, and each wall is provided with one end anchored in the wall and the other end protruding There are unbonded prestressed tendons above the wall, and there are reserved prestressed tendon channels on each wall, and anchors are provided at the upper ends of each reserved prestressed tendon channel. In the adjacent wall, the upper The reserved prestressed tendon channel in the wall corresponds to the unbonded prestressed tendon set in the wall below it. After the unbonded prestressed tendon penetrates into the corresponding reserved prestressed tendon channel, its upper end Anchored by anchors. The corners of each wall are provided with damage concentration blocks. Among them, the damage-concentrated blocks at the four corners of the wall are fiber-reinforced cement-based composite materials whose strength is lower than that of the main body of the wall, and are fixed with the main body of the wall through structural glue. Two rows of unbonded prestressed tendons are arranged respectively, and one end of the unbonded prestressed tendons is anchored in the middle of the wall.

Specifically, the utility model is explained through the connection relationship between two walls.

The utility model includes two kinds of walls 11 and 12 as shown in Fig. 5-10, each wall is provided with unbonded prestressed channels and pre-buried prestressed tendons, and the four corners of the walls 11 and 12 Both damage concentration blocks 21 and 22 are provided respectively. The two types of walls are arranged at intervals, and there are two rows of unbonded prestressed tendons 31, 32 and reserved prestressed tendon channels 41, 42, corresponding to each other. The positions of the anchors 61 and 62 on the walls and the positions near the upper and lower surfaces of the walls are all reinforced by spiral stirrups. The damage concentrated blocks 21 and 22 at the four corners of each wall are made of fiber reinforced cement-based composite material whose strength is lower than that of the wall, and are fixed with the wall by structural glue.

The installation scheme of the walls 11 and 12 shown in Figure 1-4, the wall 11 passes through the beam 90 and the prestressed tendon channel 41 reserved in the wall 11 by the pre-embedded unbonded prestressed tendons 30 of the lower wall The wall 11 is fixed on the beam 90 by anchoring the anchor 61 on the top of the wall. The pre-buried unbonded prestressed tendons 31 of the wall 11 pass through the tunnel 10 of the upper beam 91 and penetrate into the corresponding reserved space of the upper wall 12. The tunnel 42 is applied with prestress and anchored to the top of the wall 12 . The installation and fixing of the body of wall 12 above the body of wall 11 is the same. The wall and the beam of the main structure are not bonded, and are fixed by gravity and the prestressed tendons passing through the wall and the beam. When the floors have relative displacement, the wall can swing, lift, fall and impact.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (6)

1. A segmented prestressed self-resetting damage concentrated prefabricated rocking shear wall is characterized in that: it includes a plurality of walls arranged from bottom to top, and each wall is provided with a non-bonded wall stretching out from the top of the wall. Prestressed tendons, and each wall is also provided with reserved prestressed tendon channels, and anchors are provided at the upper ends of each reserved prestressed tendon channels. The stress tendon channel corresponds to the unbonded prestressed tendon provided in the wall below it. After the unbonded prestressed tendon penetrates into the corresponding reserved prestressed tendon channel, its upper end is anchored by the anchor. 2. A segmented prestressed self-resetting damage concentrated prefabricated swing shear wall according to claim 1, wherein, damage concentration blocks are arranged at the corners of each wall. 3. A segmented prestressed self-resetting damage-concentrated prefabricated swing shear wall according to claim 2, wherein the damage-concentrated blocks at the four corners of the wall are of lower strength than the main body of the wall Fiber-reinforced cement-based composite material, fixed with the main body of the wall. 4. A segmented prestressed self-resetting damage concentrated prefabricated swing shear wall according to claim 1, wherein, one end of the unbonded prestressed tendon protruding from the wall is anchored in the middle of the wall , and the other end is anchored to the top of the corresponding hole in the upper wall. 5. A segmented prestressed self-resetting damage concentrated prefabricated swing shear wall according to claim 1, wherein, the wall is not bonded to the main structural beam, and the wall and the beam are passed through gravity and The prestressed tendons are fixed. 6. A kind of segmented prestressed self-resetting damage concentrated prefabricated swing shear wall according to claim 1, wherein, the position where the wall has prestressed anchors and the concrete at the upper and lower ends of the wall are all made of Spiral stirrup reinforcement.