香苑西園基坑支護(hù)設(shè)計(jì)
嵇蔚冰，李晨鐘
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（鹽城市建筑設(shè)計(jì)研究院有限公司, 鹽城 224002）
［摘要］通過(guò)對(duì)香苑西園基坑工程的支護(hù)設(shè)計(jì)、施工、監(jiān)測(cè)總結(jié)，得出以下結(jié)論：在軟土地區(qū)，當(dāng)周邊環(huán)境較為寬松時(shí)，5.7m深基坑采用攪拌樁重力式擋土墻，邊緣近8m處采用雙排樁；11m深基坑不設(shè)內(nèi)支撐，采用旋噴錨桿支護(hù)是可行的，設(shè)計(jì)時(shí)錨桿的擴(kuò)大頭應(yīng)進(jìn)入較好土層；工程的實(shí)測(cè)位移與計(jì)算基本吻合，如錨桿施工與挖土配合不好、基坑暴露時(shí)間長(zhǎng)、不按照設(shè)計(jì)要求放坡則會(huì)加大基坑位移；非常規(guī)的深淺坑間圍護(hù)應(yīng)采用有限元方法進(jìn)行分析。［關(guān)鍵詞］基坑支護(hù); 攪拌樁重力式擋土墻; 水鉆孔; 雙排樁; 旋噴錨桿; SMW工法; 深層水平位移監(jiān)測(cè)中圖分類(lèi)號(hào)：TU476 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)21-0089-05Foundation pit supporting design of Sweet Garden Western projectJi Weibing, Li Chenzhong(Yancheng Architecture Design & Research Institute Co., Ltd., Yancheng 224002, China)Abstract: Foundation pit supporting design of Sweet Garden Western project was introduced as well as its construction and monitoring. Following conclusions were drawn. If it’s convenient, gravity cement-soil wall is applied in 5.7 meters depth foundation pit in soft soil areas, while double-row-piles wall is set in nearly 8 meters deep foundation pit. Supporting is not necessary in 11 meters deep foundation pit while the rotary spray anchor is feasible and the enlargement of anchor head should thrust into hard soil. Measured displacements are consistent with calculated ones. Foundation pit displacements increase if anchor construction cooperate badly with earth excavation, with long exposure time and improper slope construction. Finite element method analysis should be applied in unconventional supporting between deep and shallow pits.Keywords: foundation pit supporting; gravity cement-soil wall; water drilling; double-row-piles wall; rotary spray anchor; SMW method; deep horizontal displacement monitoring作者簡(jiǎn)介：嵇蔚冰，本科，一級(jí)注冊(cè)結(jié)構(gòu)工程師，研究員級(jí)高級(jí)工程師，Email:Jwb0608@163.com。參考文獻(xiàn)［1］ 劉全林，楊有蓮. 加筋水泥土斜錨樁基坑維護(hù)結(jié)構(gòu)的穩(wěn)定性分析及其應(yīng)用［J］.巖石力學(xué)與工程學(xué)報(bào), 2005, 24(S2):5331-5336.
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