多樁型復(fù)合地基設(shè)計(jì)及工程應(yīng)用
茅曉輝1,付厚利1,蘇軍一2
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(1 山東科技大學(xué)土木建筑學(xué)院,青島 266510; 2 建研地基基礎(chǔ)工程有限責(zé)任公司,北京 100013)[摘要]通過對某高層框架結(jié)構(gòu)多樁型復(fù)合地基設(shè)計(jì),討論了多樁型復(fù)合地基的承載力和沉降計(jì)算方法,對兩種樁型聯(lián)合應(yīng)用的設(shè)計(jì)方案選擇進(jìn)行了分析,并對最終復(fù)合地基的承載力及地基變形進(jìn)行了計(jì)算。計(jì)算結(jié)果與現(xiàn)場實(shí)測一致,滿足工程精度要求。說明在某些工程地質(zhì)條件下聯(lián)合運(yùn)用兩種不同性狀的樁型,可以獲得更加合理的地基處理效果。[關(guān)鍵詞]多樁型復(fù)合地基;承載力;沉降;工程應(yīng)用Design and engineering application of multi-type-pile composite foundationMao Xiaohui1, Fu Houli1, Su Junyi2(1 College of Civil Engineering and Architecture, Shan Dong University of Science and Technology, Qingdao 266510, China; 2 Jian Yan Foundation Engineering Co., Ltd., Beijing 100013, China)Abstract:Through designing a high-rise frame structure with multi-type-pile composite foundation, bearing capacity and settlement calculation methods of multi-type-pile composite foundation are discussed, and design scheme selection of two type piles with different characters is analyzed. The results of final composite foundation bearing capacity and settlement calculation based on the engineering practice are consistent with that of the field test and meet the need of the engineering accuracy. The results show that in some engineering geological conditions, the combined use of two type piles with different characters can achieve more reasonable treatment effect of the foundation.Keywords:multi-type-pile composite foundation; bearing capacity; settlement; engineering application*國家自然科學(xué)基金項(xiàng)目(59974015)。作者簡介:茅曉輝,博士研究生,高級工程師,一級注冊結(jié)構(gòu)工程師,Email:originally_h@163.com。參考文獻(xiàn)[1]龔曉南.復(fù)合地基理論與工程實(shí)踐[M].北京:中國建筑工業(yè)出版社,2002.[2]周京華.地基處理[M]. 成都: 西南交通大學(xué)出版社,1997.[3]王明山,王廣馳,閆雪峰.多樁型復(fù)合地基承載性狀研究[J].巖土工程學(xué)報(bào),2005,27(10):1142-1146.[4]馬驥,張東剛.長短樁復(fù)合地基設(shè)計(jì)計(jì)算[J].巖土工程技術(shù),2001(2):86-91.[5]趙明華,張玲,楊明輝.基于剪切位移法的長短樁復(fù)合地基沉降計(jì)算[J].巖土工程學(xué)報(bào),2005,27(9): 994-998.[6]劉奮勇,楊曉斌,劉學(xué).混合樁型復(fù)合地基試驗(yàn)研究[J].巖土工程學(xué)報(bào),2003,25(1):71-75.[7]閆明禮,王明山,閆雪峰.多樁型復(fù)合地基設(shè)計(jì)計(jì)算方法探討[J].巖土工程學(xué)報(bào),2003,25(3):352-355.[8]閆雪峰. 復(fù)合地基設(shè)計(jì)若干問題和沉降計(jì)算[D].天津:天津大學(xué),1999.[9]閆雪峰,閆明禮. 復(fù)合地基沉降計(jì)算的復(fù)合模量探討[C]//第六屆地基處理學(xué)術(shù)討論會(huì)暨第二屆基坑工程學(xué)術(shù)討論會(huì)論文集,2000:3-8.[10]閆明禮,張東剛. CFG樁復(fù)合地基技術(shù)及工程實(shí)踐[M].北京:中國水利水電出版社,2001.
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