CN101538951A - Integral hanging shock insulation building structure - Google Patents

Abstract

The present invention is an integrally suspended earthquake-isolated building structure, which includes a superstructure, a support structure and a shock-isolation layer. The support structure is generally a building bottom structure or a basement structure, and the entire superstructure is supported by a hanger. The shock-isolation layer includes suspension devices, wind-resistant and damping energy-dissipating devices. The suspension device consists of a suspension rod or a cable, a suspension point hinge and a pallet at the bottom of the column wall. The wind-resistant and damping energy-dissipating device can keep the structure without overall relative displacement under the action of wind load or small earthquake, and the damping energy-dissipating device can dissipate the seismic energy under the action of large earthquake. The anti-seismic mechanism of the structure of the invention is clear, the processing of the suspension device is simple, the maintenance and detection are convenient, the structure is safe and reliable, and the anti-seismic effect is obvious.

Description

Integral Suspension Isolation Building Structure

technical field

The invention belongs to the field of anti-seismic technology of construction engineering, and in particular relates to an anti-seismic building structure of a novel anti-seismic structure system.

Background technique

The disasters that earthquakes bring to human beings are huge, and the history of human construction of dwellings is the history of constant struggle against earthquake disasters. With the development of human society and civilization, human beings have more and more means of mitigating earthquakes, more and more advanced technologies, and more and more complete anti-seismic theoretical systems. Existing structural anti-seismic control methods are divided into active control, passive control, and hybrid control. Among the more mature passive control anti-seismic methods, there are technical methods such as seismic isolation and energy consumption shock absorption. Among them, the most widely used and mature anti-seismic technology is the seismic isolation technology. Seismic isolation technology is divided into base seismic isolation and layer seismic isolation according to the location of the seismic isolation layer. Seismic isolation building structures are widely used in earthquake-prone countries and regions, such as Japan, Taiwan, the West Coast of the United States, and mainland China. There are more than 200 earthquake-isolated buildings in mainland China.

The seismic isolation layer of the existing seismic isolation building structure is generally set in the basement of the structure or the bottom layer of the structure. The devices in the seismic isolation layer generally include (1) large laminated steel plate rubber bearings or laminated steel plate rubber bearings with lead cores, which can provide Vertical support pressure and horizontal restoring force of the structure; (2) Various dampers, used to dissipate energy and reduce structural displacement, including viscous dampers, viscoelastic dampers, metal buckling dampers, metal friction dampers, memory alloys Damper etc. Although this kind of seismic isolation structure is widely used, it also has certain technical defects, such as the aging problem of rubber bearings, and the maintenance and replacement of seismic isolation bearings are difficult problems.

The method of using suspension technology for structural seismic resistance has also been applied to a certain extent. Two methods are mainly used: (1) mass blocks are suspended in the main structure, and the coupling response of the main structure and the substructure is used to reduce the impact of earthquake action on the main structure, such as The famous Taipei 101 building and the newly completed Shanghai World Financial Center both adopt the method of hanging damping balls; (2) adopt the method of hanging several layers of structural layers with a giant frame, such as the Hongkong and Shanghai Banking Bank building, its structure has a giant outer basket frame , hang several substructures vertically, and each substructure includes several floors.

Contents of the invention

The purpose of the present invention is to provide an integral suspension seismic isolation building structure, which is a new type of seismic isolation structure system, which can improve the seismic performance of the structure.

For achieving above object, the solution that the present invention adopts is:

An integrally suspended earthquake-isolation building structure includes a superstructure, a support structure and a shock-isolation layer, the support structure supports the superstructure through a hanger, and the shock-isolation layer is located inside the support structure for shock isolation.

The supporting structure is the building ground floor structure or basement structure, and the superstructure is the upper building floor structure.

The seismic isolation layer includes suspension devices, wind resistance and damping energy dissipation devices, the wind resistance and damping energy dissipation devices are installed on the support structure near the columns or walls of the superstructure, and the suspension devices are connected to the cantilever beams of the support structure and the wind resistance and damping energy dissipation devices .

The suspension device includes a suspension rod or a cable, a suspension point hinge and a bottom tray of the column wall, and the bottom tray of the column wall supports the column or wall of the upper structure, and one end thereof is connected with the wind resistance and damping energy dissipation device; the suspension rod or the cable connects the column The wall bottom tray and the cantilever beam are connected and fixed by the hanging point hinge.

The suspension point is hingedly connected to one or both ends of the suspension rod or the stay cable.

The wind-resistant and damping energy-dissipating devices are bidirectionally arranged in the shock-isolation layer.

Specifically, an integrally suspended seismic-isolation building structure includes a superstructure, a supporting structure and a seismic-isolation layer. The supporting structure is generally a building substructure or a basement structure, and the entire superstructure is supported by a spreader. The shock-isolation layer includes suspension devices, wind-resistant and damping energy-dissipating devices. The suspension device consists of a suspension rod or a cable, a suspension point hinge and a pallet at the bottom of the column wall. The wind-resistant and damping energy-dissipating device can keep the structure without overall relative displacement under the action of wind load or small earthquake, and the damping energy-dissipating device can dissipate the seismic energy under the action of large earthquake. The overall suspension isolation building structure meets the three necessary elements of the isolation structure: (1) The characteristic period is long, which is longer than the excellent period of seismic waves in various sites, so that the seismic response of the structure is small, and the load effect of the seismic action of structural components is small; (2) When the overall suspension structure swings, the horizontal force component of the cable caused by the self-weight of the structure provides the horizontal restoring force of the structure; (3) At the same time, install wind resistance and damping energy dissipation devices on the isolation layer. The existing on-line detection technology for structural health and the maintenance technology for mechanical equipment can ensure the safety and reliability of the overall suspension and earthquake-isolation building structure of the present invention, and the anti-seismic effect is obvious. The anti-seismic mechanism of the structure of the invention is clear, the processing of the suspension device is simple, the maintenance and detection are convenient, the structure is safe and reliable, and the anti-seismic effect is obvious.

Due to the adoption of the above scheme, the present invention has the following characteristics: the seismic isolation structure of the present invention has obvious anti-seismic effect, can effectively reduce the seismic response of the upper main structure, reduce the cost of the upper structure, and its popularization and application can bring significant economic and social benefits , will effectively protect the lives and property of house users.

Description of drawings

Fig. 1 is a front view of an example of a seismic isolation structure of the present invention.

Figure 2 is a detailed view of the suspension device.

Explanation of the numbers in the accompanying drawings:

1-superior structure; 11-column or wall; 2-support structure; 21-cantilever beam; 3-steel tie rod or cable;

4-column wall bottom tray; 5-semicircular hinge and vertical energy dissipation device; 6-wind resistance and damping energy dissipation device;

Detailed ways

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

Please refer to Fig. 1, shown in 2, a kind of overall suspension seismic isolation building structure of the present invention comprises superstructure 1, supporting structure 2 and seismic isolation layer, and described supporting structure 2 is generally building bottom structure or basement structure, and superstructure 1 is hung on the support structure 2 by the spreader, and the support structure 2 at this time plays a supporting role to support the entire upper structure 1. The shock-isolation layer includes a suspension device, a wind-resistant and damping energy-dissipating device 6, and the wind-resistant and damping energy-dissipating device 6 is installed on the support structure 2 near the column or wall 11 of the superstructure. Suspension device is made up of suspender or dragline 3, hanging point hinge 5 (being semicircle hinge and vertical energy consumption device) and column wall bottom pallet 4. The column or wall bottom tray 4 supports the column or wall 11, one end of which is connected with the wind resistance and damping energy dissipation device 6, and the suspension rod or cable 3 connects the cantilever beam 21 of the supporting structure with the column wall bottom tray 4, and the connection point adopts Hanging point hinge 5 is fixed. The wind-resistant and damping energy-dissipating device can keep the structure without overall relative displacement under the action of wind load or small earthquake, and the damping energy-dissipating device can dissipate the seismic energy under the action of large earthquake.

The implementation method of a kind of integral suspension earthquake-isolation building structure of the present invention is: carry out the construction of support structure first, generally be the basement or the bottom of the basic structure of the house, wait for the concrete to reach a certain strength and install the suspension device, then carry out the construction of the superstructure, and at the same time Install the wind-resistant and damping energy-dissipating devices of the seismic isolation layer. The above process is based on the seismic analysis of the isolated structure, and all seismic structural measures need to be designed in detail.

The overall suspension seismic isolation building structure of the present invention has different characteristics from the above two suspension structure systems, (1) the overall structure is suspended, the supporting structure can be regarded as a rigid body, and the seismic reliability of the supporting structure is higher; (2) Compared with the two kinds of suspension structure systems in the prior art, the mechanical principle of the structure system of the present invention is closer to a simple pendulum as a whole, rather than the vibration structure system of main and sub-structures.

Compared with the rubber bearing seismic isolation technology, the overall suspension isolation building structure of the present invention is more comparable, and meets the requirements of the seismic design of the structure for the isolation layer: (1) the first-order natural period of the overall suspension structure is very long, far The superior period of seismic waves is longer than that of ordinary sites; (2) the overall suspension structure has automatic horizontal restoring force; (3) the requirements of other seismic design codes for the isolation layer can also be met in the overall suspension isolation layer.

Other technologies to ensure the anti-seismic safety of structures can be solved, such as metal materials and their anti-corrosion measures, stress detection technology for suspension devices, structural safety protection mechanisms for occasional failure of components, etc.

The above description of the embodiments is for those of ordinary skill in the art to understand and apply the present invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative efforts. Therefore, the present invention is not limited to the embodiments herein, and improvements and modifications made by those skilled in the art according to the disclosure of the present invention should fall within the protection scope of the present invention.

Claims (6)

1. An integrally suspended earthquake-isolation building structure, which includes a superstructure, a support structure and a shock-isolation layer, characterized in that: the support structure supports the entire superstructure through a hanger, and the shock-isolation layer is located inside the support structure for shock isolation. 2. The integrally suspended seismic-isolation building structure according to claim 1, characterized in that: the supporting structure is the ground floor structure or the basement structure, and the superstructure is the upper building floor structure. 3. The integral suspension and seismic isolation building structure according to claim 1, characterized in that: the seismic isolation layer includes suspension devices, wind resistance and damping energy dissipation devices, and the wind resistance and damping energy dissipation devices are installed on the supporting structure near the upper part The column or wall of the structure, the suspension device connects the cantilever beam of the supporting structure and the wind resistance and damping energy dissipation device. 4. The integrally suspended earthquake-isolated building structure according to claim 3, characterized in that: the suspension device includes a suspension rod or a cable, a suspension point hinge and a bottom tray of the column wall, and the bottom tray of the column wall supports the column or wall of the upper structure , one end of which is connected to the wind-resistant and damping energy-dissipating device; the suspension rod or the cable is connected to the bottom tray of the column wall and the cantilever beam, and is connected and fixed by the suspension point hinge. 5. The integrally suspended earthquake-isolated building structure according to claim 4, wherein the suspension point is hinged and fixed to one or both ends of the suspension rod or the cable. 6. The integrally suspended earthquake-isolated building structure according to claim 3, characterized in that: the wind-resistant and damping energy-dissipating devices are bidirectionally arranged in the earthquake-isolation layer.

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