重庆建筑
重慶建築
중경건축
CHONGQING ARCHITECTURE
2014年
7期
23-25
,共3页
重庆市轨道交通%金山寺车站%暗挖车站%开挖工法%围岩%变形分析%保留核心土法%三台阶法%双侧壁导坑法
重慶市軌道交通%金山寺車站%暗挖車站%開挖工法%圍巖%變形分析%保留覈心土法%三檯階法%雙側壁導坑法
중경시궤도교통%금산사차참%암알차참%개알공법%위암%변형분석%보류핵심토법%삼태계법%쌍측벽도갱법
rail transit in Chongqing%Jinshansi station%underground station%excavation construction method%surrounding rock%deformation analysis%core soil reservation method%three step method%double sides heading method
该文依托重庆地铁金山寺车站工程,提出了设计的双侧壁导坑法在Ⅲ~Ⅳ级围岩施工存在的问题,在车站开挖工法初步增选了三台阶法、保留核心土法,对车站开挖三种工法建立弹塑性有限元进行模拟分析,得到了三种开挖工法的围岩位移分析结果,再经过工法比选,提出了一种安全合理的工法,即保留核心土法,从而指导车站的开挖施工,解决了双侧壁导坑法在Ⅲ~Ⅳ级围岩施工存在的问题,可为类似工程提供参考。
該文依託重慶地鐵金山寺車站工程,提齣瞭設計的雙側壁導坑法在Ⅲ~Ⅳ級圍巖施工存在的問題,在車站開挖工法初步增選瞭三檯階法、保留覈心土法,對車站開挖三種工法建立彈塑性有限元進行模擬分析,得到瞭三種開挖工法的圍巖位移分析結果,再經過工法比選,提齣瞭一種安全閤理的工法,即保留覈心土法,從而指導車站的開挖施工,解決瞭雙側壁導坑法在Ⅲ~Ⅳ級圍巖施工存在的問題,可為類似工程提供參攷。
해문의탁중경지철금산사차참공정,제출료설계적쌍측벽도갱법재Ⅲ~Ⅳ급위암시공존재적문제,재차참개알공법초보증선료삼태계법、보류핵심토법,대차참개알삼충공법건립탄소성유한원진행모의분석,득도료삼충개알공법적위암위이분석결과,재경과공법비선,제출료일충안전합리적공법,즉보류핵심토법,종이지도차참적개알시공,해결료쌍측벽도갱법재Ⅲ~Ⅳ급위암시공존재적문제,가위유사공정제공삼고。
Based on the Jinshan Temple subway station Project in Chongqing, some problems in the gradeⅢandⅣrock construction with double side heading method. Three step method and core soil reservation method are added into the excavation method. Elastic-plastic finite element simulation is established to analyze the three methods and the analysis results of the surrounding rock displacement with the three excavation methods are obtained. Through comparison, a kind of safe and reasonable method is presented, that is core soil reservation method, to guide the station excavation construction. It solves the problems in gradeⅢandⅣrock construction with double side heading method and can offer some references for similar engineering.