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（1 廣州市天作建筑規(guī)劃設(shè)計有限公司， 廣州 510623； 2 安徽卓譽(yù)地產(chǎn)有限公司， 合肥 230022）
［摘要］合肥天玥廣場深基坑工程支護(hù)面積大且周邊環(huán)境復(fù)雜，對基坑支護(hù)選型進(jìn)行了比較分析，最終在該基坑西側(cè)采用了雙排樁+中心島（預(yù)留土坡）+豎向鋼管斜支撐的支護(hù)方案?；娱_挖過程中，對支護(hù)結(jié)構(gòu)位移、支撐軸力及周邊建筑沉降等進(jìn)行了監(jiān)測。運(yùn)用PLAXIS有限元程序?qū)Σ捎迷摲N支護(hù)方案的基坑開挖過程進(jìn)行了模擬分析。結(jié)果表明，計算值與實(shí)測值較吻合。該工程的順利實(shí)施，證實(shí)了有限元分析方法的可靠性與基坑支護(hù)方案的合理性。
［關(guān)鍵詞］深基坑； 雙排樁； 中心島法； 豎向鋼管斜支撐； 有限元
中圖分類號：TU473-2文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2017)23-0080-06
Application and analysis of double-row piles structure for deep foundation pit construction of Hefei Tianyue plaza
Jin Xuefeng1, Xian Zhaojia2, Yu Yanzhao1, Ma Lide1
(1 Guangzhou Teamzero Architecture and Planning Co., Ltd., Guangzhou 510623, China; 2 Anhui Zhuoyu Real Estate Co., Ltd., Hefei 230022, China)
Abstract:Considering large supporting area and complex peripheral circumstances of the deep foundation pit of Hefei Tianyue plaza, the selection of foundation pit support was compared and analyzed. Finally, the double-row piles with central island method (reserved slope) and vertical steel tube bracing were combined to form comprehensive supporting scheme at the west side. During the excavation of the foundation pit, the displacement of the supporting structure, the supporting shaft force and the settlement of the surrounding buildings were monitored. The finite element software PLAXIS was used to simulate the excavation process of the foundation pit using this kind of supporting scheme. The results show that the calculated values are in good agreement with the measured values. The successful implementation of the project confirms the reliability of the finite element analysis method and the rationality of the supporting scheme of the foundation pit.
Keywords:deep foundation pit; double-row pile; central island method; vertical steel tube bracing; finite element
作者簡介：金雪峰，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，注冊土木（巖土）工程師，Email：55140677@qq.com。
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