加筋格宾挡墙破裂面及承载力特性研究  

Study on the failure surface and the bearing capacity character of reinforced gabion retaining wall

作　　者：王维[1] 黄向京[1] 许桂林 刘泽[3] 

机构地区：[1]湖南省交通规划勘察设计院,湖南长沙410008 [2]中铁工程设计咨询集团有限公司郑州设计院,河南郑州450052 [3]中南大学土木建筑学院,湖南长沙410075

出　　处：《铁道科学与工程学报》2010年第6期43-49,共7页Journal of Railway Science and Engineering

基　　金：湖南省交通科技资助项目(200612)

摘　　要：在加筋格宾挡墙筋材原型观测试验和数值模拟的基础上,对不同加筋规范所采用的破裂面进行了比较分析,提出了改进双折线型潜在破裂面,并通过加筋格宾挡土墙实体工程的现场观测结果,进一步分析了改进双折线型潜在破裂面的优点。结果表明:采用改进双折线型破裂面计算,比公路规范和BS8006规范安全,比铁路规范经济。采用极限平衡法,推导了双折线型破裂面在拉力破坏和粘着破坏时的墙顶部表面通用承载力计算公式,统一了0.3H简化破裂面和朗肯破裂面形式下的承载力计算公式。Based on the prototype preservation and numerical analysis of a reinforced gabion retaining wall,the failure surfaces adopted by different design manuals are compared and analyzed and the improved double line simplified failure surface model is proposed for reinforced earth retaining wall with double-twisted hexagonal steel wire mesh.After analyzed the results obtain by a field test done in a reinforced gabion retaining wall,the advantages of improved double line simplified failure surface model were analyzed further.The results show that it is safer to adopt the double line simplified failure surface for calculation than the highway specifications and BS8006,economicer than the railway specifications.Finally,on the basis of double line simplified failure surface,the bearing capacity formula of the top surface of backfill behind reinforced earth retaining wall under two failure modes is introduced by the limit equilibrium method,which unifies the bearing capacity formula of the 0.3H simplified failure surface and that of the Rankine failure surface.

关 键 词：加筋格宾挡墙 双绞合六边形钢丝网 改进双折线型破裂面 模型试验 现场监测 承载力特性 

分 类 号：TU43[建筑科学—岩土工程]