强风化泥岩地基上CFG桩复合地基应用与优化
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摘要
鉴于软岩地基上CFG桩复合地基工作性状的独特性,以青岛某3栋高层住宅楼(1#,2#,3#楼)为依托,对地基处理方案进行优化,通过强风化泥岩地基上CFG桩复合地基和天然地基的静载荷试验,研究了CFG桩复合地基和天然地基的承载性能和变形特性,验证了该场区经优化后地基处理方案的可行性与合理性。研究表明,本工程1#,2#楼采用天然地基完全能够满足设计要求,在很大程度节约了工程造价。
In view of the uniqueness of the working traits of the CFG pile composite foundation on the soft rock foundation, based on three high-rise residential buildings(1#, 2# and 3# buildings) in Qingdao, the foundation treatment scheme was optimized. Through the static load test of CFG pile composite foundation and natural foundation on strongly weathered mudstone foundation, the bearing capacity and deformation characteristics of CFG pile composite foundation and natural foundation were studied, and the feasibility and rationality of the optimized foundation treatment scheme in this field were verified. The research shows that the natural foundation used in 1# and 2# buildings of this project can fully meet the design requirements and greatly save the project cost.
In view of the uniqueness of the working traits of the CFG pile composite foundation on the soft rock foundation, based on three high-rise residential buildings(1#, 2# and 3# buildings) in Qingdao, the foundation treatment scheme was optimized. Through the static load test of CFG pile composite foundation and natural foundation on strongly weathered mudstone foundation, the bearing capacity and deformation characteristics of CFG pile composite foundation and natural foundation were studied, and the feasibility and rationality of the optimized foundation treatment scheme in this field were verified. The research shows that the natural foundation used in 1# and 2# buildings of this project can fully meet the design requirements and greatly save the project cost.
引文
[1] 杜云晶,王坤,王益超,等.CFG 复合地基在高层建筑中的应用[J].建筑结构,2016,46(2):71-75.
[2] 邓日海,罗铁生.CFG 桩复合地基在某超高层建筑中的应用[J].建筑结构,2013,43(8):92-96.
[3] 乔京生,王喜强,牛宝云,等.基于差异沉降的复合地基沉降计算研究[J].河南科技大学学报(自然科学版),2007,22(3):61-65.
[4] 黄生根.柔性荷载下带帽CFG桩复合地基承载性状的试验研究[J].岩土工程学报,2013,35(S2):564-568.
[5] 建筑地基基础设计规范:GB 50007—2011[S].北京:中国建筑工业出版社,2012.
[6] 建筑地基处理技术规范:JGJ 79—2012[S].北京:中国建筑工业出版社,2012.
[7] 韩永强,杨剑,王超,等.水泥粉煤灰碎石桩复合地基的优化设计及仿真[J].西安工业大学学报,2016,36(2):120-124.
[8] 赵明华,雷勇,刘晓明.基于桩-岩结构面特性的嵌岩桩荷载传递分析[J].岩石力学与工程学报,2009,28(1):103-110.
[9] 潘星.CFG桩复合地基沉降计算探讨[J].岩土力学,2005,26(S1):248-251.
[10] 王士杰,何满潮,朱常志,等.GC与CFG桩组合桩型复合地基承载特性研究[J].岩土力学,2008,29(10):2632-2636.
[11] YOU S,CHENG X,GUO H,et al.In-situ experimental study of heat exchange capacity of CFG pile geothermal exchangers[J].Energy and Buildings,2014,79:23-31.
[12] ZHANG C,JIANG G,LIU X,et al.Deformation performance of cement-fly ash-gravel pile-supported embankments over silty clay of medium compressibility:a case study[J].Arabian Journal of Geosciences,2015,8(7):4495-4507.
[2] 邓日海,罗铁生.CFG 桩复合地基在某超高层建筑中的应用[J].建筑结构,2013,43(8):92-96.
[3] 乔京生,王喜强,牛宝云,等.基于差异沉降的复合地基沉降计算研究[J].河南科技大学学报(自然科学版),2007,22(3):61-65.
[4] 黄生根.柔性荷载下带帽CFG桩复合地基承载性状的试验研究[J].岩土工程学报,2013,35(S2):564-568.
[5] 建筑地基基础设计规范:GB 50007—2011[S].北京:中国建筑工业出版社,2012.
[6] 建筑地基处理技术规范:JGJ 79—2012[S].北京:中国建筑工业出版社,2012.
[7] 韩永强,杨剑,王超,等.水泥粉煤灰碎石桩复合地基的优化设计及仿真[J].西安工业大学学报,2016,36(2):120-124.
[8] 赵明华,雷勇,刘晓明.基于桩-岩结构面特性的嵌岩桩荷载传递分析[J].岩石力学与工程学报,2009,28(1):103-110.
[9] 潘星.CFG桩复合地基沉降计算探讨[J].岩土力学,2005,26(S1):248-251.
[10] 王士杰,何满潮,朱常志,等.GC与CFG桩组合桩型复合地基承载特性研究[J].岩土力学,2008,29(10):2632-2636.
[11] YOU S,CHENG X,GUO H,et al.In-situ experimental study of heat exchange capacity of CFG pile geothermal exchangers[J].Energy and Buildings,2014,79:23-31.
[12] ZHANG C,JIANG G,LIU X,et al.Deformation performance of cement-fly ash-gravel pile-supported embankments over silty clay of medium compressibility:a case study[J].Arabian Journal of Geosciences,2015,8(7):4495-4507.