地铁环境下既有建筑结构的减隔振方法研究

针对地铁产生的振动造成周围环境的振动污染问题,从振源、传播途径和建筑结构3个方面研究了既有建筑结构的减隔振方法,探讨了各种方法的有效程度。结果表明:通过降低振源的激振强度、切断振动的传播途径或在传播途径上削弱振动、合理规划使建筑物避开振动影响区等措施可以降低振动的不利影响;对于不同的既有建筑结构,可根据实际情况并权衡经济效益与施工难易程度,有选择地采用减隔振措施。该研究为解决相关环境振动影响下的减隔振问题提供了参考。

Research on Mitigation Methods of Vibrations Caused by Metro Environment for Existing Building Structures

Based on the vibration pollution to the surrounding environment caused by the metro,authors studied the mitigation methods of vibration for existing building structures from three aspects,such as vibration source,transmission way and building structure,and discussed the effective degrees of different kinds of methods.The results show that lessening vibration sources from the vibration intensity,cutting off the transmission way of vibration or weakening vibration in the transmission way,reasonable planning to make buildings avoid vibration effect area can reduce the adverse effects of vibration.For the different existing building structures,vibration isolation measures should be chosen selectively through considering actual situation,balance economic benefits and degrees of difficulty of construction.This study can provide reference for related vibration isolation problem caused by environment vibration.