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基础托换有哪些方法？ - 工程施工 - 项目管理 - 氿上知道
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满意答案
常用的托换技术有：①将拟托换的基础上的荷载传递到桩（或沉井）上。设置桩的方法有：千斤顶压入法、打入法及钻孔灌注法等。桩可能是粗直径的，定向排列的群桩，也可能是细直径的、不定向排列的树根桩。②从原结构物基底向下挖坑达到合适的地基持力层，然后用混凝土填充形成墩，使荷载传给墩；或者将基础扩大，以减小基底压力。这些方法适用于地下水位以上的基础。托换基础施工要严格控制质量，保证原有基础与托换部分连接，使荷载能有效传递。同时，施工需分段进行，以避免原有建筑结构的应力变化过大，使安全得到确实保证。有时将基础托换与地基处理措施（如化学灌浆）结合进行，可以得到较好的效果.
糖衣
回答于：2013-11-12
共1条回答