CN201817929U - Prestressed shock absorption component capable of improving damping of structural element of building - Google Patents

Abstract

The utility model relates to a prestressed shock-absorbing component capable of improving the damping of building structural components, comprising a prestressed steel rod, a casing, an anchor plate, and a tension anchor; wherein: the prestressed steel rod is put into the casing; the prestressed steel One end of the rod is connected to the anchor plate, and the other end extends into the tension anchor; after prestressed tension, the prestressed steel rod is in tension, and the prestressed shock absorbing part can be installed in the structural member longitudinal fiber tension Areas with large compressive deformation, such as under the flexural longitudinal reinforcement of the reinforced concrete beam-column member section or the inner side of the flange of the flexural member of the steel structure or the middle part of the steel support section of the steel structure. When the structural member vibrates: the tensile strain of the prestressed steel rod in the prestressed damping part will further increase, and due to the existence of prestress, the prestressed steel rod in this prestressed damping part will be earlier than the component reinforcement or The steel goes into yield, providing hysteretic damping. The utility model can be used for shock-absorbing control of new constructions or anti-seismic reinforcement of old buildings.

Description

A prestressed shock-absorbing component that can improve the damping of building structural components

technical field

The utility model relates to the damping and shock-absorbing control of building structures and the seismic reinforcement of existing buildings, in particular to a damping and shock-resistant device placed in or attached to the surface of a structural component. the

Background technique

In recent years, there have been many earthquakes with great destructive power in my country. Among them, the Wenchuan earthquake and Yushu earthquake caused the loss of life and property, and the whole country mourns for it. Most of my country's cities and important industrial buildings are located in earthquake zones, and earthquake hazards will threaten us for a long time. Therefore, it has important economic value and social significance to reduce the destructive loss of building structures in earthquake action. the

The current commonly used shock absorption technology is mainly through the installation of dampers inside the building. The inter-story displacement of the building is used to drive the damper to work, increasing the structural damping, so as to achieve the purpose of shock absorption. There are the following defects in the installation of dampers inside the structure: first, the installation space of dampers inside many structures is limited by the requirements of architectural functions or aesthetics, and often there is not enough or suitable installation space; second, dampers generally require regular inspection and inspection. Maintenance, which increases the cost of using the damper; third, the nodes where the damper is installed need to be specially designed, which increases the design workload; fourth, the design and application of the damper requires specialized knowledge and technology, which has caused certain application obstacles; Fifth, foreign dampers are mostly used in the shock absorption equipment of domestic large-scale projects, and it is still difficult for similar domestic products to compete with them. These factors have hindered the popularization and application of damping shock absorption technology in our country. the

The commonly used methods for seismic reinforcement of old projects in my country include adding steel plates or bonding carbon fiber cloth to the surface of components. Adding steel plates can increase the stiffness of old building components, and bonding carbon fiber cloth can increase the strength of components. Each has its own focus, but none of them can improve the damping of the structure. the

Contents of the invention

The purpose of this utility model is to solve the above-mentioned defects of installing dampers in existing building structures and the defect that the seismic reinforcement method cannot improve structural damping. In the component or installed on the surface of reinforced concrete component or welded in the steel structure component to improve the damping of the component, and then realize the shock absorption or reinforcement of the whole building. Its use is not limited by the internal space of the building. It has a wide range of applications and can be used in It can be used in any reinforced concrete member and steel structure member. the

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

A prestressed damping component capable of improving the damping of building structural components, comprising a prestressed steel rod 1, a sleeve 2, an anchor plate 3, and a tension anchor 4; wherein: the prestressed steel rod 1 is installed in the sleeve 2; One end of the prestressed steel rod 1 is connected to the anchor plate 3, and the other end extends into the tension anchor 4; the anchor plate 3 and the tension anchor 4 are anchored in the structural member to provide counter force for the prestressed tension. After the anchor plate 3 and the tension anchor 4 are fixed in the component, the tension is prestressed. After the prestressed stretching is completed, the prestressed steel rod 1 is in a state of tensile stress. On the one hand, the function of the sleeve 2 is to isolate the bond between the prestressed steel rod 1 and the concrete when the prestressed damping part is embedded in the reinforced concrete structural member, so as to facilitate the tension prestressing; 1 Provides anti-buckling restraint when in compression. the

Generally speaking, the prestressed shock absorbing components can be installed in the area where the longitudinal fiber is subjected to large tensile deformation in the structural member, such as under the bending longitudinal reinforcement of the reinforced concrete beam-column member section or inside the flange of the bending member of the steel structure or the steel support of the steel structure The middle part of the section. When the structural member vibrates: if the prestressed damping part in the member is in tension, the tensile strain of the prestressed steel rod in the prestressed damping part will further increase, due to the existence of prestress, the prestressed steel The tensile strain of the rod is much larger than the structural reinforcement or steel at the same position, so the prestressed steel rod in the prestressed shock absorbing part will enter yield earlier than the structural reinforcement or steel to provide hysteretic damping; the above prestressed shock absorbing device is in If the member is arranged symmetrically in the section, one side is always in tension to provide damping. The damping component mainly utilizes plastic energy dissipation in the direction of tensile stress. the

The structural components mentioned above include: reinforced concrete beams, columns, walls, and slabs; steel-reinforced concrete columns, beams, and walls; steel-concrete composite beams; steel beams, steel columns, steel plate shear walls, and steel supports. the

The prestressed steel 1 bar in the prestressed shock absorbing parts can use steel bars, steel pipes, steel rods

The device can be arranged continuously for areas with large seismic deformation in structural components to effectively provide damping and shock absorption protection for structures and components. the

The prestressed damping parts proposed by the utility model that can improve the damping of building structural members can obtain the following beneficial effects:

The prestressed damping components are installed in the structural components, which can increase the damping level of the components and reduce the seismic response of the structure;

Prestressed damping components do not occupy the installation space inside the building, and can be used in any component, including beams, columns, walls, panels, supports, etc., and have a wide range of applications. the

When the prestressed shock-absorbing components are used for seismic reinforcement, they can be directly installed on the surface of the component, which is convenient for construction and does not affect the normal function of the building. the

The steel in the prestressed damping part is common structural steel, and the engineering cost is low. the

Description of drawings:

Fig. 1 is the schematic diagram of the prestressed shock-absorbing part that the utility model proposes and can improve the damping of building structure member;

Fig. 2 is the a-a cross-sectional view in the schematic diagram of the prestressed damping parts that can improve the damping of building structural members proposed by the utility model;

Fig. 3 is the schematic diagram of the prestressed damping part embodiment 1 that the utility model proposes and can improve the damping of building structural members;

Fig. 4 is the b-b sectional view in the schematic diagram of the prestressed damping part embodiment 1 that the utility model proposes and can improve the building structure member damping;

Fig. 5 is the c-c cross-sectional view in the schematic diagram of the prestressed damping part embodiment 1 that can improve the damping of building structural member that the utility model proposes;

Fig. 6 is the d-d cross-sectional view in the schematic diagram of the prestressed damping part embodiment 1 that can improve the damping of building structural member that the utility model proposes;

Fig. 7 is the schematic diagram of embodiment 2 of the prestressed shock-absorbing component that the utility model proposes and can improve the damping of building structural members;

Fig. 8 is the e-e cross-sectional view in the schematic diagram of the prestressed damping part embodiment 2 that can improve the damping of building structural members proposed by the utility model;

Fig. 9 is the g-g cross-sectional view in the schematic diagram of the prestressed damping component embodiment 2 that can improve the damping of building structural members proposed by the utility model;

The f-f sectional view in the schematic diagram of the prestressed damping part embodiment 1 proposed by the utility model that can improve the building structure component damping;

Fig. 11 is the schematic diagram of embodiment 3 of the prestressed shock-absorbing parts that can improve the damping of building structural member that the utility model proposes;

Fig. 12 is the actuality of the prestressed shock-absorbing parts proposed by the utility model that can improve the damping of building structural components.

i-i sectional view in the schematic diagram of embodiment 3;

Fig. 13 is the h-h cross-sectional view in the schematic diagram of the prestressed damping component embodiment 3 that can improve the damping of building structural members proposed by the utility model;

The jj-sectional view in the schematic diagram of the prestressed damping part embodiment 3 proposed by the utility model that can improve the damping of building structural members;

In the figure: 1. Prestressed steel rod, 2. Sleeve, 3. Anchor plate, 4. Tension anchor, 5. Prestressed damping component, 6. Reinforced concrete beam, 7. Reinforced concrete column, 8. Steel bar Concrete shear wall, 9, reinforced concrete beam reinforcement, 10, reinforced concrete column reinforcement, 11, reinforced concrete shear wall reinforcement, 12, shaped steel beam, 13, shaped steel column, 14, steel support, 15, anchor pieces. the

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. the

Example 1:

As shown in FIG. 3 , the reinforced concrete structure provided with prestressed damping components 5 includes reinforced concrete beams 6 , reinforced concrete columns 7 , reinforced concrete shear walls 8 , and prestressed damping components 5 . The prestressed damping component 5 is embedded in the inner side area of the upper and lower skin reinforcement 9 of the reinforced concrete beam 6 section, the inner side area of the structural reinforcement 10 around the reinforced concrete column 7 section, and the upper and lower bending sections of the reinforced concrete shear wall 8 The inner side of the leather reinforcement 11. The prestressed shock-absorbing component 5 can provide damping and shock-absorbing protection for the reinforced concrete beam 6, the reinforced concrete column 7 and the reinforced concrete shear wall 8, and at the same time reduce the seismic response amplitude of the reinforced concrete structure. the

In this embodiment, the prestressed shock absorbing part 5 damping reinforcement includes a prestressed steel rod 1, a casing 2, an anchor plate 3, and a tension anchor 4; the prestressed steel rod 1 is loaded into the casing 2; the prestressed steel rod 1 One end of the steel rod is connected with the anchor plate 3, and the other end extends into the tension anchor 4; after the prestressed tension is completed, the prestressed steel rod 1 is in a state of tensile stress. the

In this embodiment, the prestressed shock-absorbing component 5 is embedded in the reinforced concrete member, and it is necessary to reserve a tensioning work space at the tensioning anchorage 4. After the tensioning is completed, use high-strength grade concrete or epoxy resin to pour the prestressed concrete. Leave space. the

Rib Example 2:

As shown in FIG. 7 , the steel structure provided with prestressed damping components 5 includes shaped steel beams 12 , shaped steel columns 13 , steel supports 14 , and prestressed damping components 5 . The prestressed damping part 5 is welded on the inner side of the flange of the shaped steel beam 12, the inner side of the corner point of the flange of the shaped steel column 13 and the middle part of the section of the steel support 14. The prestressed shock-absorbing component 5 can provide damping and shock-absorbing protection for the shaped steel beam 12, shaped steel column 13 and steel support 14, and at the same time reduce the seismic response amplitude of the steel structure. the

In this embodiment, the prestressed shock absorbing part 5 damping reinforcement includes a prestressed steel rod 1, a casing 2, an anchor plate 3, and a tension anchor 4; the prestressed steel rod 1 is loaded into the casing 2; the prestressed steel rod 1 One end of the steel rod is connected with the anchor plate 3, and the other end extends into the tension anchor 4; after the prestressed tension is completed, the prestressed steel rod 1 is in a state of tensile stress. the

Rib Example 3:

As shown in FIG. 11 , the reinforced concrete structure provided with prestressed damping components 5 includes reinforced concrete beams 6 , reinforced concrete columns 7 , reinforced concrete shear walls 8 , and prestressed damping components 5 . The prestressed damping component 5 is placed on the left and right outer surfaces of the reinforced concrete beam 6 section, the outer surface of the reinforced concrete column 7 section and the outer surface of the reinforced concrete shear wall 8 section. The prestressed shock-absorbing component 5 can provide damping and shock-absorbing protection for the reinforced concrete beam 6, the reinforced concrete column 7 and the reinforced concrete shear wall 8, and at the same time reduce the seismic response amplitude of the reinforced concrete structure. the

In this embodiment, the prestressed shock absorbing part 5 damping reinforcement includes a prestressed steel rod 1, a casing 2, an anchor plate 3, and a tension anchor 4; one end of the prestressed steel rod 1 is connected with the anchor plate 3, and the other end extends into the In the tension anchor 4; the prestressed steel rod 1 is in a state of tensile stress after the prestressed tension is completed. the

In this embodiment, the prestressed damping component 5 is installed on the surface of the reinforced concrete member. In order to illustrate the method of use, this embodiment adopts different installation methods in the beam column:

●The reinforced concrete beam 6 adopts the method of pre-embedding the anchor plate, that is, the part of the anchor plate 3 and the tension anchor 4 is pre-embedded in the reinforced concrete beam 6, and after the concrete strength meets the requirements, the tension is prestressed. the

●The reinforced concrete column 7 adopts the fixing method of the anchor 15, the anchor plate 3 and the tension anchor 4 are welded on the anchor 15, and then tensioned and prestressed. This method can be used for both new construction and seismic reinforcement of existing buildings. When used in a new building, the anchor piece 15 can be pre-embedded in concrete, and when used in an existing building, the anchor piece 15 can be fixed to the column surface with a chemical anchor bolt. the

Claims (6)

1. the prestressed damping part that can improve building structural element damp is characterized in that: comprise prestressing force steel pole (1), sleeve pipe (2), anchor slab (3), tension ground tackle (4); Wherein: prestressing force steel pole (1) is packed into earlier before stretch-draw in the sleeve pipe (2); One end of prestressing force steel pole (1) links to each other with anchor slab (3), and the other end stretches in the tension ground tackle (4); At anchor slab (3) and tension ground tackle (4) fixing post tensioning prestressing force in member.

2. a kind of prestressed damping part that improves building structural element damp according to claim 1, it is characterized in that: this prestressed damping part generally is installed in the structural element the big zone of longitudinal fiber tension and compression deformation, as below the vertical muscle of reinforced concrete beam column member section bending resistance or inboard, the steel work flexural member edge of a wing or steel work steel supporting section middle part.

3. a kind of prestressed damping part that improves building structural element damp according to claim 1, it is characterized in that: this prestressed damping part not only can be embedded in the reinforced concrete structural element, can also be installed on reinforced concrete member surface or is welded in the steel structure member.

4. a kind of prestressed damping part that improves building structural element damp according to claim 1 is characterized in that: the prestressing force steel pole (1) in the prestressed damping part can be reinforcing bar, steel pipe, rod iron.

5. a kind of prestressed damping part that improves building structural element damp according to claim 1 is characterized in that: this damping part can be arranged in continuously and is out of shape bigger zone in the structural element.

6. a kind of prestressed damping part that improves building structural element damp according to claim 1, it is characterized in that: described structural element comprises: reinforced concrete beam, post, wall, plate; Combined steel and concrete column, beam, wall; Shaped steel-concrete combination beam; Girder steel, steel column, steel plate shear force wall, steel support.

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