在软弱土层基坑中的双排桩带锚索支护应用  

A Brief Discussion on the Application of Double-row Piles Structure with Anchor in Soft Soil Foundation

作　　者：陈达 

机构地区：[1]广州市建筑科学研究院新技术开发中心有限公司,广州510440

出　　处：《广州建筑》2016年第2期22-25,共4页GUANGZHOU ARCHITECTURE

基　　金：广州市科技计划项目(项目编号:2013Y2-00036)

摘　　要：通过双排桩带锚索支护结构在软弱土层中的应用实例，探讨了双排桩带锚索支护的一些关键问题。提出了在双排桩带锚索支护设计中盖板的侧向刚度的计算方法，其侧向刚度宜取1．5-12MN／m。同时提出了竖向锚索对前后排桩内力分布的影响，竖向锚索的设置将提高前后排桩的弯矩，双排桩带锚索支护在桩身纵筋配筋时应适当增加。实例说明双排桩带锚索支护应用在软弱土层中其位移控制效果很好。Some key problems of double-row piles retaining and protecting structures with anchor are discussed through the practical application examples of them in soft soil foundation. An analytical method to calculate the lat- eral stiffness of the cover plate in the double-row piles structure with anchor is presented, which has a suitable range from 1.5 to 12 MN/m. The influence of the setting vertical anchor on stresses distribution of both rows of the piles are investigated, which indicate that the vertical anchor settings will increase the bending moment in all the piles so that longitudinal reinforcement of the double-row piles with anchor should be appropriately increased. The practical application demonstrates the obvious effects effect of double-row piles with anchor on the displacement controlling in soft soil foundation.

关 键 词：双排桩 锚索 基坑 软弱土层 周边环境 

分 类 号：TU753[建筑科学—建筑技术科学]