墙柱结合地基处理模型试验研究
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摘要
根据均布荷载作用下地基沉降分布特性,提出一种新型墙柱结合地基处理方法。通过调节墙式加固体和柱状加固体深度和位置,实现提高地基承载力,降低基础总体沉降和控制基础的不均匀沉降。在相同外围墙式加固体条件下,通过改变桩长和位置布置,设计了五组模型实验方案,并利用自制加载系统模拟均布荷载进行载荷试验。根据沉降分布曲线分析,得到了有益的结论,可供建设与设计单位参考。
Based on the property of ground settlement distribution under uniformly distributed vertical load,here,a new type composite foundation with wall-shaped and columniform improvement was put forward. By adjusting the depth and position of wall-shaped and columniform improvement bodies,the foundation bearing capacity was improved,the total ground settlement was reduced and the ground differential settlement was put under control. By adopting the same wallshaped improvement bodies,5 groups of model tests with different combination of columniform improvement lengths and arrangements were conducted,meanwhile the load tests were performed by using self-made loading system to simulate the uniformly distributed vertical load. By analyzing the curves of settlement distribution of the tests,some beneficial results were obtained. These results will provide valuable references to the construction and design of similar projects.
Based on the property of ground settlement distribution under uniformly distributed vertical load,here,a new type composite foundation with wall-shaped and columniform improvement was put forward. By adjusting the depth and position of wall-shaped and columniform improvement bodies,the foundation bearing capacity was improved,the total ground settlement was reduced and the ground differential settlement was put under control. By adopting the same wallshaped improvement bodies,5 groups of model tests with different combination of columniform improvement lengths and arrangements were conducted,meanwhile the load tests were performed by using self-made loading system to simulate the uniformly distributed vertical load. By analyzing the curves of settlement distribution of the tests,some beneficial results were obtained. These results will provide valuable references to the construction and design of similar projects.
引文
[1]龚晓楠.复合地基理论及工程应用[M].北京:中国建筑工业出版社,2007.
[2]龚晓楠.地基处理手册(第二版)[M].北京:中国建筑工业出版社,2000.
[3]龚晓楠.广义复合地基理论及工程应用[J].岩土工程学报,2007,29(1):1-13.
[4]邢皓枫.复合地基固结性状研究[D].杭州:浙江大学,2005.
[5]王宁伟.复合地基理论及工程应用研究[D].哈尔滨:中国地震局工程力学研究所,2006.
[6]赵明华,张玲,李立新,等.长短桩复合地基沉降计算方法研究[J].沈阳建筑大学学报:自然科学版,2005,21(4):310-314.
[7]邓超.长短桩复合地基承载力与沉降计算[D].杭州:浙江大学,2002.
[8]陆华,高全臣,吴浩,等.长短组合桩复合地基沉降预测研究[J].施工技术,2013,42(19):30-33,36.
[9]李锋利.长短桩组合桩基础室内模型试验分析研究[D].上海:同济大学,2006.
[10]翟晓力,葛忻声.高层建筑长短桩复合地基计算方法探讨[J].水利与建筑工程学报,2012,10(1):100-104.
[11]Li W,Takeuchi K,Yamamoto H.Numerical study on effect of shallow soil improvement to control differential settlement of raft foundation[C]//Proceedings of AIJ Tyugoku Chapter Architectural Research Meeting,2005:133-136.
[12]Takeuchi K,Yamamoto H.Effect of raft foundation with shallow soil improvement on controlling differential settlement[C]//软土地区岩土工程新进展—中日岩土工程学术会议论文集,2005:350-357.
[13]Li Wei,Li Feng,Takeuchi K.Numerical analysis on a new foundation system with columniform soil improvement[C]//New Frontiers in Chinese and Japanese Geotechniques,2007:344-352.
[14]Tomono M,Kakurai M,Yamashita K.Analysis of settlement behavior of piled raft foundations[C]//Takenaka Technical Research,1987:115-124.
[15]李峰,尚凯,孙云飚,等.长短桩复合地基在软土中的固结沉降解析[J].中国新技术新产品,2009,(9):93.
[16]高飞.桩体配置对基础沉降分布的影响试验研究[D].沈阳:沈阳建筑大学,2001.
[2]龚晓楠.地基处理手册(第二版)[M].北京:中国建筑工业出版社,2000.
[3]龚晓楠.广义复合地基理论及工程应用[J].岩土工程学报,2007,29(1):1-13.
[4]邢皓枫.复合地基固结性状研究[D].杭州:浙江大学,2005.
[5]王宁伟.复合地基理论及工程应用研究[D].哈尔滨:中国地震局工程力学研究所,2006.
[6]赵明华,张玲,李立新,等.长短桩复合地基沉降计算方法研究[J].沈阳建筑大学学报:自然科学版,2005,21(4):310-314.
[7]邓超.长短桩复合地基承载力与沉降计算[D].杭州:浙江大学,2002.
[8]陆华,高全臣,吴浩,等.长短组合桩复合地基沉降预测研究[J].施工技术,2013,42(19):30-33,36.
[9]李锋利.长短桩组合桩基础室内模型试验分析研究[D].上海:同济大学,2006.
[10]翟晓力,葛忻声.高层建筑长短桩复合地基计算方法探讨[J].水利与建筑工程学报,2012,10(1):100-104.
[11]Li W,Takeuchi K,Yamamoto H.Numerical study on effect of shallow soil improvement to control differential settlement of raft foundation[C]//Proceedings of AIJ Tyugoku Chapter Architectural Research Meeting,2005:133-136.
[12]Takeuchi K,Yamamoto H.Effect of raft foundation with shallow soil improvement on controlling differential settlement[C]//软土地区岩土工程新进展—中日岩土工程学术会议论文集,2005:350-357.
[13]Li Wei,Li Feng,Takeuchi K.Numerical analysis on a new foundation system with columniform soil improvement[C]//New Frontiers in Chinese and Japanese Geotechniques,2007:344-352.
[14]Tomono M,Kakurai M,Yamashita K.Analysis of settlement behavior of piled raft foundations[C]//Takenaka Technical Research,1987:115-124.
[15]李峰,尚凯,孙云飚,等.长短桩复合地基在软土中的固结沉降解析[J].中国新技术新产品,2009,(9):93.
[16]高飞.桩体配置对基础沉降分布的影响试验研究[D].沈阳:沈阳建筑大学,2001.