CAJ | 학술논문

基坑开挖对近接地铁隧道造成不利影响，甚至危及隧道结构和运营安全。此外，隧道的存在也对基坑力学特征产生明显影响，从而改变基坑周边地层和支护结构的受力变形行为。为此，结合某广场基坑工程实践，采用三维数值模拟手段，分析近接隧道基坑开挖施工力学特征，重点探讨基坑开挖对盾构隧道结构变形的影响，以及基坑开挖过程中，地铁列车振动对基坑施工力学行为的影响，揭示基坑与隧道之间的静动力学相互作用机理，为以后类似地铁隧道保护提供理论指导和现实参考。
기갱개알대근접지철수도조성불리영향，심지위급수도결구화운영안전。차외，수도적존재야대기갱역학특정산생명현영향，종이개변기갱주변지층화지호결구적수력변형행위。위차，결합모엄장기갱공정실천，채용삼유수치모의수단，분석근접수도기갱개알시공역학특정，중점탐토기갱개알대순구수도결구변형적영향，이급기갱개알과정중，지철열차진동대기갱시공역학행위적영향，게시기갱여수도지간적정동역학상호작용궤리，위이후유사지철수도보호제공이론지도화현실삼고。
Foundation pit excavation would have adverse effects on adjacent subway tunnels,and even endanger the safety of tunnel structures and operation.In addition,the existence of the tunnel wound have significant effects on the mechanical characteristics of foundation pit,thereby altering force and deformation behavior of the strata around foundation pit and supporting structures.In this paper,combined with a square pit engineering in practice,three-dimensional numerical simulation method was adopted to analyze the mechanical features of ad-jacent tunnel pit excavation construction.Meanwhile,the effect of foundation pit excavation on the deformation of shield tunnel structures and the effect of metro trains vibration on mechanical behavior of foundation pit construc-tion were mainly discussed.In this way,the mechanism of static and dynamic interaction between the foundation pit and the tunnel was revealed,which could provide theoretical guidance and practical reference for the similar subway tunnel protection in the future.