Method for replacing rubber isolation bearing

Abstract

The invention relates to a method for replacing a rubber isolation bearing. The method comprises the following steps of (1) enlarging a lower buttress; (2) measuring and positioning bolts of upper and lower flange plates of a rubber isolation bearing to be replaced; (3) manufacturing a new isolation bearing, and forming holes in corresponding positions of flange plates of the new isolation bearing according to the measured bolt positions; (4) welding the upper and lower flange plates of the bearing to be replaced; (5) taking out lower flange plate bolts of the isolation bearing to be replaced; (6) jacking an upper buttress of the isolation bearing to be replaced; (7) taking an embedded plate, knocking off a lower buttress movable layer and taking out a movable sleeve out; (8) dragging the isolation bearing to be replace out of the normal position; (9) prestressing the new isolation bearing, and welding the upper and lower flange plates; (10) carrying the new bearing to the installation position, and fixedly installing the new bearing; (11) pouring non-shrinkage automatic flow concrete into the lower buttress movable layer; (12) unloading the jacked upper buttress. According to the method, aims of safety, high efficiency, no damage to an upper structural layer and reduction of replacement cost can be fulfilled.

Description

technical field [0001] The invention relates to the technical field of building isolation, in particular to a method for replacing an isolation support. Background technique [0002] Based on the previous "rigid anti-seismic" building anti-seismic idea, the anti-seismic basically relies on increasing the resistance of the isolation structure to resist the huge earthquake damage. However, such an approach does not conform to modern construction requirements such as light weight, high strength, energy saving, environmental protection, and engineering economy, and such an approach cannot resist rare earthquakes with high intensity. The current structure adopts the idea of ​​"flexible anti-seismic" to alleviate the seismic response of the structure, which can not only ensure the safety of the structure, but also reduce the construction cost, save energy and protect the environment. "Flexible earthquake resistance" does not blindly adopt the idea of ​​"hard resistance" to ensure...

AI Technical Summary

Problems solved by technology

[0004] However, if the vibration isolation bearing needs to be replaced during the construction process (for example, the temperature of the rubber during the vulcanization process does not reach the standard value, and the curing time is insufficient, resulting in quality problems such as rubber drumming of the vibration isolation bearing), or when using In the process, the damaged support needs to be replaced, and many problems will arise:

[0005] 1. Due to the limitations of the foundation, the design of the lower pier is small. When the upper pier is lifted, the jack cannot be directly installed on the lower pier, and the ground is far away from the upper pier, making it difficult to set up the layout

[0006] 2. Due to the gravity of the upper pier and the building, the support to be replaced may have certain compression deformation and horizontal displacement, so the bolt holes of the support to be replaced will be offset

The bolt holes of the new seismic isolation support cannot correspond to the bolt holes of the pier, and cannot be installed in place

[0007] 3. The support to be replaced is compressed under the load of the upper pier, and it will rebound when the upper pier is lifted to replace the support. Increasing the jacking amount of the upper pier will pose a greater threat to the building structure

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