综合管廊综合井地下连续墙施工振动对周边建筑物的影响分析

Analysis on Influence of Construction Vibration of Diaphragm Wall for Comprehensive Well of Utility Tunnel on Surrounding Buildings

摘要:

以天河智慧城华观路段综合管廊H8综合井为研究对象，开展综合管廊综合井地下连续墙施工振动对周边建筑物的影响研究。利用岩土工程专用软件MIDAS GTS，模拟综合管廊综合井地下连续墙冲击破岩对邻近变电站桩基的振动影响，通过对施工关键步骤的分析，总结变电站桩基振动速度峰值变化的规律，并对照振动安全允许标准，进行安全评价，相关研究成果对施工机械、施工工艺及施工振动防护措施的合理选择起到了指导作用，为今后类似工程的实施提供参考借鉴。

Abstract:

Taking the H8 comprehensive well of the utility tunnel in the section of Huaguan Road in Tianhe Smart City as a research object, the influence of the construction vibration of the underground diaphragm wall for the comprehensive well of utility tunnel on the surrounding buildings is studied. The geotechnical engineering software MIDAS GTS is used to simulate the influence of the impact rock breaking of the underground diaphragm wall for the comprehensive well of the utility tunnel on the vibration of the pile foundation of the adjacent substation. Through the analysis on the key steps of the construction, the law of the peak vibration velocity of the pile foundation of the substation is summarized, and the safety evaluation is carried out according to the allowable vibration safety standard. The relevant research results play a guiding role in the reasonable selection of construction machinery, construction technology and construction vibration protection measures, which provide the reference for the implementation of similar projects in the future.