坝肩开挖高边坡锚固方案优化分析  

Optimization Analysis on Anchoring Scheme of High Excavated Slope at Abutment

作　　者：邓华锋[1] 朱敏 孙旭曙[1] 杨栗 

机构地区：[1]三峡大学土木与建筑学院,湖北宜昌443002 [2]安徽佛子岭抽水蓄能有限公司,安徽六安230088 [3]北京市京水建设工程有限责任公司,北京102300

出　　处：《地下空间与工程学报》2014年第2期409-414,共6页Chinese Journal of Underground Space and Engineering

基　　金：国家重点基础研究发展计划(973)前期研究专项课题(2012CB426502);国家自然科学基金资助项目(51109120)

摘　　要：高边坡锚固工程中相关设计参数的选取,如锚固区域、锚索吨位、锚固角、锚索间距等将直接影响边坡加固的可靠性和经济上的合理性。以往的研究在预应力锚索锚固机理和锚固角优化等方面取得了较大的进展,但在高边坡锚固方案优化分析时较少综合考虑上述这些因素的影响。基于此,采用极限平衡和有限元相结合的方法,对某坝肩开挖高边坡的锚固方案进行了综合的优化计算分析,得到了优化的锚固方案。研究成果对于保证坝肩开挖高边坡的整体稳定,节约工程材料,降低施工成本具有重要意义,也可以供类似工程参考。The selection of design parameters in related high slope anchorage engineering, such as anchorage ar- eas, anchor cable tonnages, anchor angles and anchor spacing all have direct impact on the reliability and economic rationality of slope reinforcement. Previous research on the anchor mechanism of prestressed anchor cables and anchor angle optimization have made great progress, but there are almost no literatures about comprehensive consideration of these factors in optimization analysis of anchoring scheme for high slope. Based on above mentioned, this article used the method which combines limiting equilibrium method and finite element method to analyze the anchoring scheme, and obtained the most superior anchor scheme. The research achievements are of great significance for improving the stability of high excavated slope at abutment, saving engineering materials and reducing construction cost, and also be meaningful and helpful to other similar projects.

关 键 词：预应力锚索 锚固区域 锚固参数 优化分析 

分 类 号：TU457[建筑科学—岩土工程]