[浅谈加筋土挡土墙施工方法.ppt

* * 加筋土挡土墙 、概述 、加固机理 、设计计算 、施工技术 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 方法 加筋土挡土墙是由填土和在填土中布置一定的带状筋体(拉筋) 以及垂直的墙面板三部分组成的整体复合结构 6) 混凝土浇筑形成墙面 5) 填土完成 4) 建第二层 填土和紧实 2) 放置砾石包和土工布 装满砾石的筐 土工布 1) 建墙面的基础 排水孔 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 挡土墙的型式 单面式 双面分离式 双面交错式 加筋土挡土墙 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 特点 挡土墙结构轻 面板式样多 墙面垂直 防震性能好 施工简单 成本底 加筋土挡土墙 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 挡土墙 桥台 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 路基 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 加筋效果 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 相当于增加了侧限压力 加固机理 加筋限制了土体的侧向变形，增加了土体的强度 加筋土挡土墙 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 加筋土挡土墙破坏机理 1、外部破坏形式： 土坡整体失稳 滑动破坏 倾覆破坏 2、内部破坏： 拉筋拔出 拉筋断裂 面板与拉筋接头破坏 面板断裂 沿拉筋表面破坏 加筋土挡土墙 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 外部破坏形式 加筋土挡土墙 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 内部破坏形式 加筋土挡土墙 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 材料与构件 填土： 级配较好的砾类、砂土、碎石土、黄土、工业废渣。 面板： 一般采用混凝土预制构件，强度大于C18，厚度大于80mm。常用形状有十字形、槽形、六角形、L形以及矩形。 拉筋： 钢带、钢筋混凝土带、聚丙烯土工聚合物材料。 加筋土挡土墙 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 面板类型与尺寸（厘米） Evaluation only. Created with A