CAJ | 학술논문

为了得到基坑开挖导致支护结构的变形和土体的位移对周边环境的影响，利用信息化施工技术对郑州某深基坑分层开挖与土钉墙联合支护施工过程中支护结构的水平位移及周边建筑物的沉降进行监测和分析。结果表明：基坑坡顶产生的水平位移主要发生在开挖和支护阶段，预应力锚杆对于控制基坑变形起关键作用；基坑变形与土方分层开挖时间有直接关系，土方开挖快，位移速率大；周边建筑物沉降与基坑壁水平位移有关联但不同步，沉降滞后水平位移一周之后。
위료득도기갱개알도치지호결구적변형화토체적위이대주변배경적영향，이용신식화시공기술대정주모심기갱분층개알여토정장연합지호시공과정중지호결구적수평위이급주변건축물적침강진행감측화분석。결과표명：기갱파정산생적수평위이주요발생재개알화지호계단，예응력묘간대우공제기갱변형기관건작용；기갱변형여토방분층개알시간유직접관계，토방개알쾌，위이속솔대；주변건축물침강여기갱벽수평위이유관련단불동보，침강체후수평위이일주지후。
In order to get the effect of the pit excavation support deformation and soil retaining structure displacement on the surrounding environment,the monitoring and analysis are made for the horizontal displacement of the supporting structure combined with pile anchor and soil nailing wall as well as the surrounding buildings′settlement of a deep founda-tion pit in Zhengzhou by using the information construction technology.The results show that the horizontal displacement from foundation pit slope mainly occurs in the excavating and supporting stage,and the prestressed anchor plays a key role to control the deformation of foundation pit;The deformation of foundation pit has direct relation with pit excavating time,so the faster the earthwork excavation,the larger is the displacement rate;The surrounding buildings′settlement and the horizontal displacement of foundation pit wall are related but not synchronous,and the settlement lags after the horizontal displacement for a week.