CAJ | 학술논문

基于上海某地铁换乘枢纽基坑群的工程地质资料，使用Midas/gts三维有限元软件，建立基于修正剑桥模型的基坑群三维模型，对基坑群不同开挖顺序进行模拟，分析得出不同工况下相应的地表沉降规律，并与单坑开挖的情况进行比较。研究表明，相比单坑开挖的情况，基坑群三种开挖方式除在基坑群短边地下墙处使地表沉降有所降低之外，大部分范围内地表沉降均有不同程度的增加。本文的研究成果对于软土地区基坑群的设计和施工具有一定的参考意义。
기우상해모지철환승추뉴기갱군적공정지질자료，사용Midas/gts삼유유한원연건，건립기우수정검교모형적기갱군삼유모형，대기갱군불동개알순서진행모의，분석득출불동공황하상응적지표침강규률，병여단갱개알적정황진행비교。연구표명，상비단갱개알적정황，기갱군삼충개알방식제재기갱군단변지하장처사지표침강유소강저지외，대부분범위내지표침강균유불동정도적증가。본문적연구성과대우연토지구기갱군적설계화시공구유일정적삼고의의。
this paper carried out a study on the influences of different excavating sequences in foundation pits on ground settlement in the engineering background of deep foundation pits construction in Shanghai .Based on the engineering geology material of one interchange terminals for metro in Shanghai , a three-dimensional fi-nite software Mdias/gts was utilized to establish the three -dimensional model for foundation pits in terms of the Modified Cambridge model .Subsequently , the simulation of foundation pits construction with three different ex-cavating sequences was realized .Then the laws of ground settlement under different construction conditions were obtained .This paper made a comparatively detailed comparison between those three conditions with a single foundation pit .The results show that , compared to a single foundation pit , the ground settlement amplitudes of three different excavations in foundation pits were heavier than that of a single foundation pit in almost the whole area, expect for the location at the short side of underground wall .The research results are of certain reference value for the design and construction of foundation pits in soft soil area .