摘要
结合工程实际案例,运用数值模拟方法分析了某城市盾构隧道穿越地下人防工程施工过程中,既有人防工程结构的变形和受力情况。结果表明:施工过程中人防结构的受力均满足承载力要求。人防结构的最大下沉量为3.80mm,最大上浮量为2.43mm,并且人防结构的水平偏移量均小于2mm。负二层人防隧道在盾构下穿的过程中可以保持结构的完整性及其功能的可使用性。
Combined with actual engineering cases,numerical simulation methods are used to analyze the deformation and force of the existing civil air defense engineering structure in a city during the construction of a shield tunnel through it.The results show that the force of the civil air defense structure meets the requirements of bearing capacity during the construction process.The maximum sinking amount of the air defense structure is 3.80mm,the maximum floating amount is 2.43mm,and the horizontal offset of the civil air defense structure is less than 2mm.The negative two-story civil air defense tunnel can maintain the structural integrity and the usability of its functions during the shield tunnel through under.
作者
冯炎
FENG Yan(China Railway Siyuan Southwest Survey and Design Group Co,LTD.,Kunming 650000)
出处
《铁道勘测与设计》
2021年第4期81-84,共4页
Railway Survey and Design
关键词
盾构隧道
人防工程
穿越
数值模拟
变形
shield tunnel
civil air defense engineering
through
numerical simulation
deformation
