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Installation underpinning method for existing framed building reinforced by parallel seismic isolation supports

A technology of seismic isolation bearings and frame buildings, which is applied in construction, building maintenance, building components, etc., can solve the problems of adding structural load conversion components in construction steps, construction complexity and unsafe factors, and save construction equipment and supports. The effects of replacing components, improving the seismic capacity, and simplifying the progress of the project

Active Publication Date: 2015-03-04
HENGSHUI JIJUN ENG RUBBER FOR GATE OR BRIDGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The installation task can only be completed by intermediate transfer of load, which virtually increases the complexity and unsafe factors of construction steps, structural load transformation components and construction

Method used

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  • Installation underpinning method for existing framed building reinforced by parallel seismic isolation supports
  • Installation underpinning method for existing framed building reinforced by parallel seismic isolation supports
  • Installation underpinning method for existing framed building reinforced by parallel seismic isolation supports

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 1-3 As shown, a kind of existing frame building of the present invention adopts the installation underpinning method of parallel seismic isolation bearing reinforcement, comprises the following steps:

[0040] Step 1: Carry out base isolation and parallel isolation reinforcement design based on the existing frame building, and base on the plan layout of the isolation support, the combination form of the isolation support, the type of isolation support, and the isolation support design. Seat size and parameter combination verification seismic isolation support 2;

[0041] Step 2: Reinforce the foundation 1 of the existing frame building and the column 10 between the foundation 1 and the bottom beam 6 of the upper frame, and construct the upper and lower corbels 4, 3 of the shock-isolation support 2 around the column 10 according to the drawing design , wherein, two seismic isolation bearings 2 are set at the same horizontal position between the upper and l...

Embodiment 2

[0048] Such as Figure 4 As shown, an existing frame building of the present invention adopts an installation underpinning method reinforced by parallel seismic isolation bearings, wherein three seismic isolation bearings are arranged at the same horizontal position between the upper and lower corbels 4 and 3 of each column 10 2. It includes two rubber bearings and a frictional sliding bearing. These shock-isolation bearings 2 are connected in parallel and arranged in a "T" shape along the direction of the bottom beam 6 of the frame. Other steps are the same as in Example 1, and will not be described in detail here.

Embodiment 3

[0050] Such as Figure 5-6 As shown, an existing frame building of the present invention adopts an installation underpinning method reinforced by parallel seismic isolation bearings, in which 4 seismic isolation bearings are set at the same horizontal position between the upper and lower corbels 4 and 3 of each column 10 2. It includes two rubber bearings and two frictional sliding bearings. These seismic isolation bearings 2 are connected in parallel and arranged in a "+" shape along the direction of the bottom beam 6 of the frame. Other steps are the same as in Example 1, and will not be described in detail here.

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Abstract

The invention relates to an installation underpinning method for an existing framed building reinforced by parallel seismic isolation supports, which belongs to the field of seismic isolation reinforcement. The installation underpinning method includes manufacturing upper brackets and lower brackets between a foundation and a sill of a multilayer frame structure and installing the seismic isolation supports; cutting off reinforced concrete columns among the seismic isolation supports after the concrete strength of the brackets reaches a designed value; safely transferring load on the structure columns onto the seismic isolation supports; and accordingly achieving the designed purpose of seismic isolation of the existing framed building. By the aid of the method, structural safety of underpinning construction is guaranteed, engineering progress is simplified and accelerated, construction devices and underpinning components are saved, accordingly, engineering manufacturing cost is lowered, and the installation underpinning method is extremely practical framed foundation seismic isolation construction technique.

Description

technical field [0001] The invention relates to a strengthening and reconstruction method, in particular to an installation and underpinning method in which an existing frame building is reinforced with parallel seismic isolation bearings, and belongs to the field of seismic reinforcement. Background technique [0002] Base isolation refers to setting an isolation cushion between the upper structure and the foundation, using the isolation layer to isolate and dissipate seismic energy, avoiding and reducing the transmission of seismic energy to the upper structure, so as to reduce the vibration of the upper structure Passive control technology has good safety and low cost, and is currently widely used in new buildings. It is a relatively mature structural earthquake control technology. However, in the reinforcement and reconstruction of existing buildings, the use of basic seismic isolation technology is still rare. The main reason is that the insertion and underpinning tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/02E04B1/36E04B1/98
Inventor 董有赵恩平龚瑞荣鞠树森杨涛
Owner HENGSHUI JIJUN ENG RUBBER FOR GATE OR BRIDGE
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