| 延安地区某边坡双排抗滑桩支护分析 |
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| 引用本文： | 刘鸣,黄华,韩冰,刘伯权.延安地区某边坡双排抗滑桩支护分析[J].长安大学学报(自然科学版),2011(2):63-67. |
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| 作者姓名： | 刘鸣 黄华 韩冰 刘伯权 |
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| 作者单位： | 长安大学建筑工程学院;长安大学旧桥检测与加固技术交通行业重点实验室;中国建筑西北设计研究院; |
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| 基金项目： | 高等学校博士点基金项目(20090205120008); 中央高校基本科研业务费专项基金项目(CHD2009JC160); 长安大学基础研究专项基金项目(2009) |
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| 摘 要： | 以延安黄土梁峁地区城市开发过程中出现的某建筑高边坡双排桩支护结构为研究对象,通过有限元程序Marc,建立数值计算模型,研究双排桩的受力机理。主要分析了桩土接触、桩体刚度、联系梁刚度、前后排桩体长度以及桩距对双排抗滑桩受力的影响。研究结果表明:随土体强度减小,后桩与土体的接触部分向桩顶发展,而前桩的接触部分则从桩顶向下减少;前桩上半部分拉应力较大,尤其在边坡根部,应力达到最大,而后桩的最大应力出现在桩顶部以下14～15m处;前、后排桩最大拉应力之比约为3/2,在承载力计算时,弯矩按3/2的比例进行分配;桩顶联梁的高度取桩身直径的60%～70%,前后桩净距取桩径的1.5倍～2.0倍较为合理。
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| 关 键 词： | 岩土工程 黄土边坡 双排桩 支护结构 |
Analysis on double-row anti-slide piles of slope in Yanan |
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| LIU Ming,HUANG Hua,HAN Bing,LIU Bo-quan.Analysis on double-row anti-slide piles of slope in Yanan[J].JOurnal of Chang’an University:Natural Science Edition,2011(2):63-67. |
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| Authors: | LIU Ming HUANG Hua HAN Bing LIU Bo-quan |
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| Institution: | LIU Ming1,HUANG Hua1,2,HAN Bing3,LIU Bo-quan1 (1.School of Civil Engineering,Chang'an University,Xi'an 710061,Shaanxi,China,2.Key Laboratory for Old Bridge Detection and Reinforcement Technology of Ministry of Transportation,Xi'an 710064,3.China Northwest Building Design & Research Institute,Xi'an 710003,China) |
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| Abstract: | During the urbanization process of Yanan,there are high building slopes retained with double-row anti-slide piles in loess hilly regions.The mechanism of the double-row anti-slide piles were analyzed with the help of Marc program.The influencing factors were analyzed,which included the pile-soil interaction,the pile's rigidity,the crossbeam's rigidity,the length of the double-row piles and their distance.The results show that with the reduce of the soil's strength,the part of the front pile which has contac... |
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| Keywords: | geotechnical engineering loess slope double-row piles retaining structure |
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