桩锚支护结构锚杆设计参数分析
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摘要
以实际工程为背景,建立深基坑桩锚支护结构的三维数值计算模型,分析不同锚杆设计参数(锚杆弹性模量、角度、锚固长度等)对桩锚支护结构位移、内力的影响及其随锚杆参数的变化规律,并对不同锚杆模量参数下基坑角部的空间效应进行探讨。结果表明,适当调整锚杆的相关设计参数以及合理利用基坑角部效应,可以有效减少桩锚支护结构的水平位移,达到优化设计、充分利用材料性能的目的。
Based on practical engineering,the three-dimensional numerical model of pile-anchor protection structure in deep foundation pit was established in this paper.The pile-anchor protection structure with different anchor design parameters(elastic modulus,anchor angle,length) was computed.The influence of the anchor parameters on displacement and internal force of the structure was analyzed and its change law with the anchor parameters was investigated.The corner effect of deep foundation pit for different anchor modulus parameters was discussed.Results show that proper adjustment of related design parameters and reasonably utilize the corner effect,can effectively reduce the displacement of pile-anchor protection structure,and reach the purpose that make full use of the material properties.
Based on practical engineering,the three-dimensional numerical model of pile-anchor protection structure in deep foundation pit was established in this paper.The pile-anchor protection structure with different anchor design parameters(elastic modulus,anchor angle,length) was computed.The influence of the anchor parameters on displacement and internal force of the structure was analyzed and its change law with the anchor parameters was investigated.The corner effect of deep foundation pit for different anchor modulus parameters was discussed.Results show that proper adjustment of related design parameters and reasonably utilize the corner effect,can effectively reduce the displacement of pile-anchor protection structure,and reach the purpose that make full use of the material properties.
引文
[1]刘岸军,钱国桢,龚晓南.土层锚杆和挡土桩共同作用的非线性分析及其优化设计[J].岩土工程学报,2006,28(10):1288-1291.
[2]谢晓红,蒋青光,王佳亮.桩锚和土钉在基坑支护中的应用[J].西部探矿工程,2010,22(7):5-8.
[3]王立明,高广运,郭院成.单支点桩锚支护结构的侧移计算[J].地下空间与工程学报,2005,1(4):510-513.
[4]刘建航,侯学渊.基坑工程手册[K].北京:中国建筑工业出版社,1997.
[5]秦四清,等.深基坑工程优化设计[M].北京:地震出版社,1998.
[6]童吉元,王靖涛.土层锚杆技术问题探讨[J].土工基础,2004,18(1):41-43.
[7]刘国彬,王卫东.基坑工程手册(第二版)[K].北京:中国建筑工业出版社,2009.
[8]JGJ120-19994建筑基坑支护技术规程[S].
[2]谢晓红,蒋青光,王佳亮.桩锚和土钉在基坑支护中的应用[J].西部探矿工程,2010,22(7):5-8.
[3]王立明,高广运,郭院成.单支点桩锚支护结构的侧移计算[J].地下空间与工程学报,2005,1(4):510-513.
[4]刘建航,侯学渊.基坑工程手册[K].北京:中国建筑工业出版社,1997.
[5]秦四清,等.深基坑工程优化设计[M].北京:地震出版社,1998.
[6]童吉元,王靖涛.土层锚杆技术问题探讨[J].土工基础,2004,18(1):41-43.
[7]刘国彬,王卫东.基坑工程手册(第二版)[K].北京:中国建筑工业出版社,2009.
[8]JGJ120-19994建筑基坑支护技术规程[S].
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