桩锚与土钉联合支护结构的土压力分配机制  

The Distribution Mechanism of Earth Pressure of Combined Retaining Structure of Pile-Anchor and Soil nailing

作　　者：郭院成[1] 李峰[1] 刘建伟[1] 薛艳青[2] 闫锐[3] 

机构地区：[1]郑州大学土木工程学院,郑州450002 [2]同济大学地下建筑与工程系,上海200092 [3]中国建设银行河南分行,郑州450002

出　　处：《河南科学》2006年第4期564-566,共3页Henan Science

基　　金：河南省自然科学基金项目资助(0611010300)

摘　　要：桩锚与土钉联合支护结构在控制基坑边壁侧移变形,减小环境影响,降低基坑支护施工难度,加快施工速度等方面具有明显技术优势,并在实际工程中得到成功应用,是目前常用的基坑支护形式之一.本文在比较桩锚与土钉各自技术特点基础上,分析研究了桩锚与土钉联合支护在基坑开挖施工过程中受力变形的发展过程,提出了联合支护结构中土压力的分配机制,为桩锚与土钉联合支护结构的设计计算提供了理论保证.The successful application of the combined retaining structure provides a new method for controlling horizontal displacement of side of foundation pit; weakening the influence on the environment; reducing the difficulty of construction of retaining structure and foundation pit; enhancing the speed of construction. In this paper, based on the comparison of merits and defects between pile-anchor and soil nailing, the development of the load carrying and deformation of the combined retaining structure during the excavating construction of foundation pit is analyzed and the distribution mode of combined retaining structure is put forward. Thus, it provides the theoretical guidance on the calculation and design method of the combined retaining structure.

关 键 词：土钉 桩锚 联合支护 土压力分配 

分 类 号：TU470.1[建筑科学—结构工程]