作　　者： ; ; ;

机构地区： 中国冶金科工集团有限公司中冶京诚工程技术有限公司

出　　处： 《岩土工程学报》 2008年第S1期192-197,共6页

摘　　要： 立足于深基坑工程实践与现行规范关于土层预应力锚杆锚固长度的明显差异,提出了"合理锚固长度"的概念及标准。推荐采用"安全系数后置法"确定预应力土层锚杆的锚固长度,并对该法与现行方法的相同点和不同点进行比较,说明了"安全系数后置法"的可靠性,可行性及经济效果。最后,对不同土层锚固长度范围及其较佳上限提出了建议值。 Based on large difference between engineering practice and the current standards on anchorage length of prestressed anchor rods in soil,'reasonable anchorage length' and its specific characteristics,were proposed.'The method of safety factor back-putted' was suggested to calculate the anchorage length.The method was compared with other methods,and the reliability,feasibility and economics of the present method were further evaluated.Finally,the range of anchorage length and the adequate upper-limit values were suggested.

关 键 词： 深基坑 预应力锚杆 锚固长度

领　　域： [建筑科学] [建筑科学]