【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。更多还原

【Abstract】 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.更多还原