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Non-disturbance replacement construction method for seismic isolation support of existing seismic isolation building

A technology of seismic isolation bearings and construction methods, applied in construction, building maintenance, building types, etc., can solve the problems of insignificant shock absorption effect of seismic isolation bearings, reduced performance of seismic isolation bearings, and erosion of maintenance environment, etc., to achieve It is convenient for on-site management and actual operation, low construction cost and high degree of mechanization

Active Publication Date: 2022-01-28
河北省建筑科学研究院有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of earthquake-isolated buildings in China is increasing year by year. Among them, there are some earthquake-isolated buildings due to lack of maintenance or the impact of environmental erosion, which greatly reduces the performance of the isolation bearing. The shock absorption effect of the isolation bearing is not significant. to replace
[0004] Under the action of the vertical load on the upper part, the seismic isolation bearing undergoes vertical compression deformation. If the beam-column joints are lifted directly, the vertical compression deformation of the isolation bearing will inevitably recover after the vertical pressure of the isolation bearing is released. It is easier for the support to be pushed out horizontally. First, the node must be lifted to restore the vertical height of the support, and then a certain height must be lifted to push the support out horizontally. Unfavorable influence on superstructure due to jacking
[0005] In the process of replacing the seismic isolation support, reduce the additional deformation of the upper structure caused by the compression deformation of the support, causing damage to the upper structure and affecting the isolation effect of the seismic isolation building

Method used

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  • Non-disturbance replacement construction method for seismic isolation support of existing seismic isolation building
  • Non-disturbance replacement construction method for seismic isolation support of existing seismic isolation building
  • Non-disturbance replacement construction method for seismic isolation support of existing seismic isolation building

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] as attached Figure 1-8 As shown, this embodiment provides a non-disturbance replacement device for seismic isolation bearings of existing seismic isolation buildings, which includes a synchronous jacking support system and a pre-compression device for seismic isolation bearings; the synchronous jacking support system includes PLC synchronous jacking Lifting support control system, power unit, signal acquisition device and jack; the power unit is a hydraulic pump station, and the hydraulic pump station is connected with the jack 1 to provide power output for the jack 1; the signal acquisition unit includes a displacement sensor 4 and a pressure sensor, the signal acquisition device is connected with the PLC synchronous jacking support control system to provide signal output for the PLC synchronous jacking support control system; The above-mentioned pressure senso...

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Abstract

The invention provides a non-disturbance replacement construction method for a shock insulation support of an existing shock insulation building. The non-disturbance replacement construction method comprises the following steps that S1, a jack temporary support is installed, the perpendicularity of a jack is calibrated, the situation that the jack inclines to generate lateral supporting component force is avoided, and safety and effectiveness of jack supporting are guaranteed; S2, a PLC synchronous jacking supporting system is installed, the jacking force of a jack temporary support is controlled, supporting is stable, and it is guaranteed that no vertical deformation is generated on a supporting point; S3, a pre-compression device is manufactured and installed, and pre-compression is stopped when a micro gap exists between the top plate of the old shock insulation support and the upper pre-embedded plate; S4, temporary supporting and pre-compression are cooperated, and supporting points do not generate vertical deformation; S5, the surfaces of the upper and lower pre-embedded plates are polished and dedusted, and antirust oil is brushed; S6, the new shock insulation support is pre-compressed. The construction method has the advantages that the mechanization degree is high, beam-column joints do not need to be jacked, the control precision is high, the replacement efficiency is high, construction is conducted at the same time, and the construction cost is low.

Description

technical field [0001] The invention belongs to the field of maintenance and construction methods for existing earthquake-isolation buildings, and in particular relates to a construction method for replacing earthquake-isolation bearings of existing earthquake-isolation buildings without disturbance. Background technique [0002] With the continuous improvement of building disaster prevention and mitigation technology, seismic isolation technology has developed rapidly in China. A considerable number of schools, hospitals, emergency command centers and other buildings have applied seismic isolation technology. After previous earthquake tests, seismic isolation buildings have good Seismic performance, thereby greatly reducing the seismic action of the upper structure, reducing the earthquake damage of the upper structure, and ensuring the normal operation of building functions. It is an economical and efficient disaster prevention and mitigation technology. [0003] Seismic i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02E04B1/98E04H9/02
CPCE04G23/02E04B1/98E04H9/021
Inventor 李尚飞付素娟崔少华郝雨杭强万明赵士永戴占彪王金泽杜金张晗刘司佳周健男刘辉尚燕民
Owner 河北省建筑科学研究院有限公司
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