Device and method for integral underpinned vibration isolation of subway underpass building foundation

Abstract

The invention relates to a device and a method for the integral underpinned vibration isolation of a subway underpass building foundation. The device comprises underpinned steel plates, a vibration isolator, a new foundation beam and a new raft. The method comprises the following steps of: reinforcing a bar-shaped foundation under the wall of a building; leveling the top surface; reserving an enough height; arranging the new foundation beam and the new raft; respectively arranging the underpinned steel plates below the new foundation beam and above the bar-shaped foundation under the wall; fixing the vibration isolator between two underpinned steel plates; and finally, intercepting walls below the new foundation beam and above the bar-shaped foundation under the wall. Compared with the prior art, the device and the method have the advantages of causing no destructive influence on the original building, ensuring the safety of construction, and effectively performing whole vibration isolation treatment on multistory brick-concrete structure buildings influenced by the running vibration of the subway.

Description

technical field [0001] The invention relates to a foundation vibration isolation device and method, in particular to an integral underpinning vibration isolation device and method for a subway passing through a building foundation. Background technique [0002] With the rapid development of urban public transportation, rail transportation such as subways has become an effective means to alleviate urban traffic and reduce pollution due to its advantages of high efficiency, speed, and environmental protection, and plays an increasingly important role in people's economic life. While the subway brings high speed and convenience to people's work and life, the vibration impact on surrounding buildings has also attracted people's attention. The frequency range of building foundation vibration caused by urban traffic is 0-200Hz. This kind of low-frequency vibration has a long transmission distance and a wide range of influence, causing vibrations on the walls, floors and ceilings o...

AI Technical Summary

Problems solved by technology

[0003] In recent years, the research on the environmental impact of urban rail transit has mainly focused on the vibration of subway tunnel structures and vibration propagation, but few directly focus on the vibration impact on buildings.

Although researchers have proposed some measures for the vibration reduction of ground buildings caused by subway operation, they have not comprehensively analyzed this effect with the surrounding environment of the subway system and the basic characteristics of adjacent buildings

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