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

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...

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

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