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（廣西建筑工程質(zhì)量檢測(cè)中心， 南寧 530005）

［摘要］某基坑平面尺寸為145m×115m，開挖深度約為7-0m，西側(cè)距毗鄰建筑物僅3m?；庸こ涛鱾?cè)局部采用扶壁式排樁支護(hù)結(jié)構(gòu)，但由于目前關(guān)于扶壁式排樁的設(shè)計(jì)尚無規(guī)范可依，并且缺乏工程實(shí)踐經(jīng)驗(yàn)，故實(shí)例借鑒雙排樁的研究成果以及現(xiàn)行基坑支護(hù)技術(shù)標(biāo)準(zhǔn)，利用等代剛度的理念對(duì)扶壁式排樁支護(hù)結(jié)構(gòu)進(jìn)行計(jì)算、設(shè)計(jì)，并對(duì)關(guān)鍵施工工序進(jìn)行控制。變形監(jiān)測(cè)結(jié)果表明，該扶壁式排樁支護(hù)結(jié)構(gòu)穩(wěn)定，能有效控制基坑變形，經(jīng)濟(jì)、社會(huì)效益俱佳，可供類似工程借鑒。

［關(guān)鍵詞］扶壁式； 排樁； 周邊環(huán)境； 監(jiān)測(cè)

中圖分類號(hào)：TU470+.3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)23-0092-04

Application of soldier piles with counterfort structure in pit supporting

Li Mei

(Guangxi Testing Center for Quality of Construction Engineering, Nanning 530005, China)

Abstract:An excavation pit with the size 145m×115m in plane and depth about 7.0m are  presented. A part of the west side of the pit was only 3 meters away from the adjacent construction. Soldier piles with counterfort structure were adopted as the supporting structure for the west side of pit construction. However, there is no design specification and engineering experience for this supporting structure design to follow currently, thereby using the experience of double-row pile research and pit supporting design specification for references, a calculation and design method based on the equivalent rigidity concept was exploited for the soldier piles with counterfort structure, and the key construction procedure was controlled.The deformation monitoring results show that the soldier piles with counterfort structure were stable and the deformation of foundation pit was well controlled. With its good economic and social benefits, the structure could be used for reference for the similar engineering.

Keywords:counterfort structure; soldier pile; surrounding environment; monitoring

作者簡(jiǎn)介：李梅，碩士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email: 865917680@qq.com。