| 复合地基桩间土应力估算及其在湿陷性黄土地基的应用 |
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| 引用本文： | 张厚先.复合地基桩间土应力估算及其在湿陷性黄土地基的应用[J].建筑技术开发,2004(4). |
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| 作者姓名： | 张厚先 |
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| 作者单位： | 河北建筑工程学院土木工程系 张家口075024 |
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| 摘 要： | 本文采用桩与土共同作用的线性分析方法 ,解得复合地基桩土分担荷载 ;再利用集中力作用下土中应力解(Mindlin 193 6)求得桩在土中某点产生的应力 ,利用矩形均布荷载作用下土中应力分布解求得桩间土荷载在土中某点产生的应力 ;最后叠加得到土中某点的附加应力。根据“土中某点的附加应力与饱和自重应力之和小于该点湿陷起始压力 ,则该点不湿陷”的准则 ,分析湿陷性桩间土的承载力在复合地基中的利用价值
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| 关 键 词： | 复合地基 湿陷性黄土 共同作用 线性分析方法 |
CALCULATION OF THE STRESS BETWEEN PILES IN COMPOSITE FOUNDATION AND ITS UTILIZATION IN COLLAPSIBLE LOESS |
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| Zhang Hou|xian.CALCULATION OF THE STRESS BETWEEN PILES IN COMPOSITE FOUNDATION AND ITS UTILIZATION IN COLLAPSIBLE LOESS[J].Building Technique Development,2004(4). |
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| Authors: | Zhang Hou|xian |
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| Affiliation: | Zhang Hou|xian |
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| Abstract: | The linear analysis method with soil|pile interaction is used to obtain the par taking ratio of pile and soil in composite foundation,and the stress caused by a pile is obtained by using the solution of stress caused by concentrated force(M indlin 1936),and stress caused by the force acting on the soil between piles is obtained by using the solution of stress caused by rectangular uniformly distrib ute load.The additional stress at a point in soil is obtained by superpositing t he two above stresses.The utilization value of the collapsible loess between pil es in composite foundation is analysised according to the following criterion:th e soil at a point is not collapsible if the sum of the additional stress and the saturated weight stress is smaller than the stress starting collapse. |
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| Keywords: | Composite foundation Collapsible loess Soil|pile interaction The linear anal ysis method |
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