预应力锚杆复合土钉设计参数对基坑位移影响规律的数值模拟分析
首发时间:2015-12-11
摘要:随着复合土钉支护技术的发展,锚杆复合土钉技术因其成本低廉、便于施工的特点得到了越来越广泛的应用。但由于对锚杆和土钉的作用机理认识不清、不能合理规范的控制基坑的变形导致众多的深基坑出现问题和事故。在复合土钉支护施工过程中以牺牲工程造价来换取基坑安全稳定性的做法也屡见不鲜。本论文通过对不同土钉入射倾角、长度和不同锚杆预应力情况下基坑的数值模拟得出不同设计参数情况下基坑的位移影响规律。
关键词: 地基基础工程 预应力锚杆复合土钉 基坑边坡 数值模拟
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Numerical simulation analysis of the influence of the design parameters of pre-stressed anchor composite soil nailing on the displacement of foundation pit
Abstract:With the development of composite soil nailing technology, anchor composite soil nailing technology have been more and more widely used because of its characteristics of low cost and easy construction.However, the mechanism of the anchor and soil nailing is not clear and the deformation of foundation pit can not be properly controlled, the two defects lead to a large number of deep foundation pit problems and accidents. The way that in exchange for the safety and stability of foundation pit at the expense of project cost is common in the process of composite soil nailing. This paper obtains displacement influence law under the case of different design parameters by numerical simulation of foundation pit under the case of different soil nail incident angle, the length and the pre-stress of different rock bolts.
Keywords: ground foundation engineering pre-stressed anchor composite soil nailing foundation pit slope numerical simulation
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No.4666830494819144****
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