【摘要】 建立了越江隧道、冻结体及周边土体相互影响的有限元计算模型.对联络通道冻土体的受力、变形及冻土壁对隧道衬砌的影响进行了综合分析,为冻结壁的设计、控制冻结对周围环境的影响等提供定量依据,验证了冻结施工方案的可靠性.通过现场实测冻土冻胀应力、隧道变形,验证了数值模拟的计算结果.更多还原

【Abstract】 Cross-river tunnel and freeze body and adjacent soil finite element models were set up.Through numerical simulation,stress and deformation of the passway frozen soil body of cross passages freezing through the cross-river tunnel were studied.It offers quantitative basis for design of freeze wall,control the freeze impact on surrounding environment and segment lining,etc.It firmly validates the reliability of the construction scheme.The variation of temperature,stress and displacement fields in frozen soil are surveyed onthe-spot during freezing period.According to the result of site-survey,the variation law of stress,displacement in frozen soil were analyzed under dynamic state of temperature field.更多还原