摘要
预应力锚杆复合土钉墙是一种常用有效的支护结构,为进一步研究受力与变形,采用理论分析与数值模拟相结合的研究方法,分析在施工过程中土钉拉力与锚杆轴力之间的关系;采用改进的增量法计算施工过程中的水平位移并考虑各种影响因素。结果表明:①考虑优化设计,预应力锚杆设置两层即可保证安全经济;②由于预应力锚杆的分担作用,邻近位置的土钉受力会变小;③改进的增量法考虑土钉对变形的影响用于计算坑壁水平位移简单可靠。
In order to further study stress and deformation of soil nailing wall reinforced pre - stressed anchors（SNWRPA）, relationship of soil nail tension and anchor force was analyzed through theoretical analysis and numericalsimulation. Improved Increment Method （IIM） was applied to calculate horizontal displacement of composite soil nailingwall in construction, considering various influential factors. The results show that, ①two layers pre - stressed anchors canensure safety and economy, considering optimization design; ②soil nail forces nearby will be smaller affected by pre -stressed anchors; ③considering the effect of soil nail on deformation, IIM will be simple and reliable to calculatehorizontal displacement.
出处
《煤炭工程》
北大核心
2014年第7期46-48,共3页
Coal Engineering
基金
国家自然科学基金资助项目(41072224)
