7.浅基础设计part1.ppt

* Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 箱形基础：为增大基础刚度，可将基础做成由钢筋混凝土顶板、底板及纵横隔墙组成的箱形基础 。 6 箱型基础 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 壳体基础：适用于水塔、烟囱、料仓和中小型高炉等高耸的构筑物的基础。 M型组合壳 正圆锥壳 内球外锥组合壳 7 壳体基础 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 7. 3 基础埋置深度的选择 基础埋置深度：是指基础底面至地面（一般指室外地面）的垂直距离。 基础埋深选择的意义：基础埋深影响建筑物的安全和正常使用、基础施工技术及工期、工程造价。 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 原则： 要求： 1. 除岩石以外，埋深应大于500mm； 2. 基础顶距离表土应大于100mm； 3. 桥基要求在冲刷深度以下。 在满足承载力的条件下尽量浅埋。 一、基础埋置深度选择原则 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 二、影响基础埋深的因素 确定基础埋置深度时，应综合考虑以下五个方面的影响因素，从中选出最优的埋置深度。 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 第七章 浅基础设计 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 第七章 浅基础设计 浅基础的设计原则、浅基础的类型、基础埋置深度的确定、浅基础的承载力、基础底面尺寸确定、地基变形验算、等 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 一、地基基础方案类型 7.1 浅基础的设计原则 天然地基上的浅基础 人工地基上的浅基础 深基础 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 天然地基：天然土层，不做人工处理。 埋深小于5m的柱基或墙基； 埋深大于5m，但小于基础宽度的筏基、箱基； 不考虑基础侧面摩擦力； 浅基础： * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 软土 人工地基：经过人工处理，加固上部土层，提高承载力。 * Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyr