軟土地區(qū)重型鍛壓機深基礎(chǔ)基坑支護設(shè)計優(yōu)化
張錫治1，王文魁2，陳昆1
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張錫治1，王文魁2，陳昆1（1 天津大學(xué)建筑設(shè)計研究院，天津 300072；2 天津大學(xué)建筑工程學(xué)院，天津 300072）[摘要] 針對3 000t模鍛液壓機設(shè)備基礎(chǔ)的沉井施工方案，依據(jù)基礎(chǔ)圍護空間的形狀特點，提出了上下分段支護的優(yōu)化技術(shù)方案，并對原基礎(chǔ)形式進行了改進。采用彈性地基梁法對排樁支護結(jié)構(gòu)進行了內(nèi)力和變形計算，計算結(jié)果與實際監(jiān)測結(jié)果相符，按優(yōu)化后方案施工取得了明顯的經(jīng)濟效益。[關(guān)鍵詞] 分段支護；設(shè)計優(yōu)化；彈性地基梁法中圖分類號：TU473-22,TU476-1文獻標(biāo)識碼：A文章編號：1002-848X(2012)10-0127-03Design optimization of supporting for the deep foundation of a heavy forging press in soft soil areaZhang Xizhi1, Wang Wenkui2, Chen Kun1（1 Architectural Design and Research Institute of Tianjin University, Tianjin 300072, China; 2 School of Civil Engineering, Tianjin University, Tianjin 300072, China）Abstract: According to the open caisson construction scheme of a 3 000t forging hydraulic press, the optimization technology solution of upper and lower segmentation supporting was put forward and original foundation layout was improved considering the shape feature of foundation-bracing space. The internal force and deformation of row pile supporting structure were calculated with the elastic foundation beam method, and the results agree with actual monitoring results. Apparent economic benefits are obtained after the construction according to the optimized design.Keywords: segmentation supporting; design optimization; elastic foundation beam method作者簡介：張錫治，博士，研究員，碩士生導(dǎo)師，Email:zxz@eyou.com。參考文獻［1］莫海鴻,楊小平. 基礎(chǔ)工程［M］. 北京: 中國建筑工業(yè)出版社, 2003.［2］東南大學(xué), 浙江大學(xué), 湖南大學(xué), 等. 土力學(xué)［M］. 2版. 北京: 中國建筑工業(yè)出版社, 2005.［3］楊光華. 深基坑支護結(jié)構(gòu)的實用計算方法及其應(yīng)用［M］. 北京: 地質(zhì)出版社, 2004.［4］李海光. 新型支擋結(jié)構(gòu)設(shè)計與工程實例［M］. 北京: 人民交通出版社, 2004.［5］DB 29202—2010 建筑基坑工程技術(shù)規(guī)程［S］. 天津: 天津市建設(shè)科技信息中心, 2010.
