基坑土钉支护设计计算问题探讨  

Dicussion on Calculation of Soil Nailing Design for Foundation Pit

作　　者：孙玉琢[1] 刘福臣[1] 成英昌 张伟[1] 

机构地区：[1]山东水利职业学院,山东日照276826 [2]日照中豪建筑设计有限公司,山东日照276826

出　　处：《港工技术》2009年第3期49-51,共3页Port Engineering Technology

摘　　要：土钉支护设计与计算中,存在的计算公式使用条件不明确、计算公式不合理等问题,可能给工程造成不必要的浪费和安全隐患。针对JGJ 120—99《建筑基坑支护技术规程》的有关规定,探讨水平荷载标准值、破裂角、土钉长度计算中存在的问题,并推导出破裂角和自由长度通用计算公式。通过案例说明,采用推荐公式,土钉支护设计计算合理、安全可靠、简单方便。There are many problems such as the applied condition of calculation formula being not clear and unreasonable in the calculation of soil nailing design for excavation, which may cause the unnecessary waste and the salty hidden dangers. Aiming at the relative regulation of Technical Specification for Retaining and Protection of Building Foundation Excavations of JGJ 120--99, the problems existing in the calculation of standard value of horizontal load, the cracked angle and soil nailing length are discussed. The common used calculation formula for the cracked angle and free length are derived. It is shown by the the formula is reasonable, safe and reliable as well as simple and example that the design of soil nailing applying convienient.

关 键 词：基坑 土钉支护 土钉长度 

分 类 号：TU753.8[建筑科学—建筑技术科学]