CAJ | 학술논문

根据南京地铁鸡鸣寺站深基坑工程监测数据，分析了地下连续墙变形性状，对基坑施工过程进行了数值模拟，进一步分析了第四道混凝土支撑及深层支撑竖向间距对地下连续墙水平位移的影响。研究表明，该工程地下连续墙水平位移成抛物线型位移，最大水平位移位置下降到21.5 m后不再因开挖加深而下降；仅改变最后一道支撑位置对地下连续墙最终变形影响不大；合理采用混凝土支撑以及增加一道支撑可以有效控制地下连续墙的水平位移。
근거남경지철계명사참심기갱공정감측수거，분석료지하련속장변형성상，대기갱시공과정진행료수치모의，진일보분석료제사도혼응토지탱급심층지탱수향간거대지하련속장수평위이적영향。연구표명，해공정지하련속장수평위이성포물선형위이，최대수평위이위치하강도21.5 m후불재인개알가심이하강；부개변최후일도지탱위치대지하련속장최종변형영향불대；합리채용혼응토지탱이급증가일도지탱가이유효공제지하련속장적수평위이。
According to the deep foundation pit monitoring data of Jimingsi subway station in Nanjing, the deforma-tion behavior of diaphragm wall is analyzed. Finite element analysis is conducted on the construction process of deep foundation pit. Furthermore, factors affecting diaphragm wall are investigated, and two of them, including the fourth reinforce concrete support and the vertical spacing of deep support, are selected for further analysis. Studies show that the form of horizontal displacement of diaphragm wall is parabolic. The maximum horizontal displace-ment down to 21.5 meters no longer continues with excavation depth increasing. Reasonable support and increas-ing the use of concrete support can effectively control the horizontal displacement of diaphragm wall.