- 摘 要
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（1 浙江華展工程研究設計院有限公司， 寧波 315012； 2 寧波市軌道交通集團有限公司， 寧波 315101）
［摘要］依托軟土地區(qū)寧波市軌道交通4號線雙東路車站基坑工程，對基坑施工全過程包括地下連續(xù)墻施工、基坑開挖施工及結構向上施工導致的鄰近建筑和地表變形進行監(jiān)測，并對其監(jiān)測數(shù)據(jù)進行分析。結果表明：地下連續(xù)墻及結構向上施工期間引起的鄰近建筑物沉降占基坑施工全過程引起的相應變形量的7.82%和33.19%；地下連續(xù)墻及結構向上施工期間引起的鄰近建筑物傾斜占基坑施工全過程引起的相應變形量的16.47%和20.17%，以上兩個施工期間引起的鄰近建筑變形量均不容忽視；基坑開挖引起的鄰近建筑沉降呈現(xiàn)出顯著的空間效應和時間效應；在車站基坑中設置鋼支撐軸力伺服系統(tǒng)是一種減小相應區(qū)段的鄰近建筑物沉降變形速率的有效保護措施。
［關鍵詞］深基坑施工；軟土地區(qū)；地鐵車站；建筑物變形；地下連續(xù)墻；實測分析
中圖分類號：TU473文獻標識碼：A文章編號：1002-848X(2021)10-0128-07
Measured analysis on the impact of entire construction process of deep foundation pits of subway stations on neighboring buildings in soft soil areas
ZHENG Xiang 1, TANG Jixin2, CHENG Yichong1, GONG Dikuai1, LAN Jianzhong2
(1 Zhejiang Huazhan Institute of Engineering Research & Design, Ningbo 315012, China; 2 Ningbo Urban Rail Transit Group Co., Ltd., Ningbo 315101, China)
Abstract:Based on the foundation pit project of Shuangdong road station of Ningbo rail transit line 4 in the soft soil area,adjacent buildings and surface deformations caused by the whole process of foundation pit construction including underground diaphragm wall construction, foundation pit excavation construction and structure upward construction lead to were monitored, monitoring data were analyzed. The results show that the settlement of adjacent buildings caused by the construction of diaphragm wall and structure upward construction account for 7.82% and 33.19% of the corresponding deformation caused by the whole process of foundation pit construction. The tilt of adjacent buildings caused by the diaphragm wall construction and the structure upward construction account for 16.47% and 20.17% of the corresponding deformation caused by the whole process of foundation pit construction. The deformation of adjacent buildings caused by the above two construction should not be ignored. The settlement of adjacent buildings caused by foundation pit excavation construction presents significant space effect and time effect. It is an effective protection measure to reduce the settlement and deformation rate of adjacent buildings in the corresponding section to set up the steel bracing axial force servo system in the station foundation pit.
Keywords:deep foundation pit construction;soft soil area;subway station;building deformation;diaphragm wall;measurement analysis
*浙江省重點研發(fā)計劃項目（No. 2017C03020）。
作者簡介：鄭翔，碩士，工程師，Email: 289054653@qq.com。
