884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（華南農(nóng)業(yè)大學(xué)水利與土木工程學(xué)院， 廣州 510642）

［摘要］為確保廣州宏城廣場(chǎng)基坑施工安全，考慮在地鐵APM線隧道兩側(cè)由于不平衡開(kāi)挖對(duì)地鐵APM線隧道產(chǎn)生的偏壓影響，在地鐵隧道上方采用分區(qū)分層分段逐步開(kāi)挖的方式開(kāi)挖基坑，同時(shí)依據(jù)不同的地質(zhì)條件和開(kāi)挖深度采用水泥土墻+內(nèi)支撐、攪拌樁+鉆孔灌注樁+錨索、攪拌樁+鉆孔灌注樁+內(nèi)支撐、攪拌樁+地下連續(xù)墻+內(nèi)支撐、旋噴樁+旋挖樁+內(nèi)支撐（斜撐）等多種綜合支護(hù)方案。通過(guò)詳細(xì)的監(jiān)測(cè)方案了解基坑支護(hù)結(jié)構(gòu)的變形情況以確?；影踩?。監(jiān)測(cè)數(shù)據(jù)表明：錨索拉力和基坑的水平位移主要發(fā)生在基坑土體的開(kāi)挖階段，基坑土體的平衡開(kāi)挖較好地控制了地鐵隧道的變形，周邊的建筑物、道路和管線的變形也較小。

［關(guān)鍵詞］深基坑工程; 地鐵設(shè)施; 施工方案; 信息化施工

中圖分類號(hào)：TU473        文獻(xiàn)標(biāo)識(shí)碼：A        文章編號(hào)：1002-848X(2014)16-0081-06

Information construction and analysis of deep foundation pit near subway facilities

He Chunbao

 (College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangzhou 510642, China)

Abstract: In order to ensure the safety of foundation pit construction of Guangzhou Hongcheng Plaza, considering the eccentric earth pressure on subway APM line due to unbalance excavation on both sides of subway APM line, the piecewise and block excavation method above the subway tunnel was favorable for excavating the foundation pit. Based on different geological conditions and foundation pit depth, the cement soil wall with interior supports, mixing pile with bored piles and anchor cables, mixing pile with bored piles and interior supports, mixing pile with  diaphragm walls and interior supports, rotary churning piles and rotary drilling piles with interior supports（diagonal braces）were combined to form the supporting scheme of Guangzhou Hongcheng Plaza foundation pit construction. A detailed monitoring scheme was laid to find out the deformation conditions of the supporting system of the deep foundation pit to ensure the safety. The monitoring data indicate that tension force of the anchor and horizontal displacement of foundation pits mainly take place in excavation stage of the foundation pit. The balance excavation of the foundation earth well controls the deformations of the APM line, surrounding buildings, roads and underground pipelines.

Keywords: deep foundation pit project; subway facility; construction scheme; information construction

*廣東省科技計(jì)劃項(xiàng)目(2010B031000026)。

作者簡(jiǎn)介：何春保，博士，副教授，Email:hcb1238@163.com。

參考文獻(xiàn)

［1］陳俊生，劉叔灼，莫海鴻，等. 緊鄰地鐵設(shè)施大型基坑工程施工方案研究［J］. 巖土工程學(xué)報(bào), 2012, 34(S1):377-382.

［2］謝兆耕，傅先華. 緊貼運(yùn)營(yíng)地鐵隧道的深基坑施工技術(shù)［J］. 施工技術(shù)，2010，37(9)：1-5.

［3］HU Z F，YUE Z Q，ZHOU J，et al． Design and construction of a deep excavation in soft soils adjacent to the Shanghai Metro tunnels［J］． Canadian Geotechnical Journal，2003，40(5):933-948.

［4］高廣運(yùn), 高盟, 楊成斌, 等. 基坑施工對(duì)運(yùn)營(yíng)地鐵隧道的變形影響及控制研究［J］. 巖土工程學(xué)報(bào), 2010, 32(3): 453-459.

［5］安關(guān)峰，高峻岳. 廣州地鐵公園前地下空間深基坑綜合支護(hù)監(jiān)測(cè)分析［J］. 巖土工程學(xué)報(bào), 2007, 29(6): 872-879.

［6］安關(guān)峰，宋二祥，高俊岳. 廣州地鐵小谷圍島站基坑支護(hù)設(shè)計(jì)與監(jiān)測(cè)分析［J］. 巖土力學(xué), 2006, 27(2): 317-322.

［7］安關(guān)峰，高俊岳. 廣州石牌橋地鐵車站深基坑信息化施工與分析［J］. 巖土力學(xué), 2005, 26(11): 1837-1840.

［8］魏綱. 基坑開(kāi)挖對(duì)下方既有盾構(gòu)隧道影響的實(shí)測(cè)與分析［J］. 巖土力學(xué), 2013, 34(5): 1421-1428.

［9］鄭剛, 劉慶晨, 鄧旭, 等. 基坑開(kāi)挖對(duì)下臥運(yùn)營(yíng)地鐵既有箱體影響的實(shí)測(cè)及分析［J］. 巖土力學(xué), 2012, 33(4):1109-1116.