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（廣州市住宅建筑設計院有限公司， 廣州 510623）
［摘要］隨著城市建設步伐的加快，在填海形成的軟土地基上修建高層建筑成為可能，且高層建筑一般都附有地下室，這對基坑設計及施工提出了新的要求。結(jié)合珠海市橫琴新區(qū)的軟土地區(qū)某基坑工程實例，采用理正深基坑V7-0(理正深基坑支護結(jié)構(gòu)設計軟件)計算了此基坑的深層水平位移、內(nèi)支撐軸力及坑頂水平位移，并將計算結(jié)果與實測結(jié)果進行了對比。結(jié)果表明，軟土地區(qū)基坑會產(chǎn)生整體位移及扭轉(zhuǎn)變形。最后，介紹了軟土地區(qū)深基坑支護設計及施工會遇到的問題，并指出了當前軟土地區(qū)基坑設計需要完善的內(nèi)容。
［關鍵詞］軟土； 基坑設計； 基坑施工
中圖分類號：TU473文獻標識碼：A文章編號：1002-848X(2018)11-0118-05
Discussions on design and construction technologies of deep foundation pit in soft soil area
Yu Weihua
(Guangzhou Residential Architecture Design Institute Co., Ltd.， Guangzhou 510623， China)
Abstract:With the accelerating pace of urban construction, it is possible to build high-rise buildings on the soft soil foundation formed by reclamation, and this places new demands on the design and construction of foundation pits because high-rise buildings generally have basements. Based on a foundation pit engineering project in the soft soil area of Hengqin New District, Zhuhai City, the deep horizontal excavation of the foundation pit, the axial force of the internal support and the horizontal displacement of the pit top were calculated using Lizheng deep foundation pit software V7-0 (Lizheng deep foundation pit supporting structure design software), and the calculation results were compared with the actual measurement results. The results show that the overall displacement and torsional deformation of the foundation pit in soft soil area will occur. Finally, the problems encountered in the design and constructions of deep foundation pit support in soft soil were introduced, and the incomplete contents of the current pit design in soft soil area were pointed out.
Keywords:soft soil; foundation pit design; foundation pit construction
作者簡介：喻衛(wèi)華，碩士，工程師，Email：mewhy1999@foxmail.com。
