| 斜坡地形高露头挖孔桩水平承载特性试验研究 |
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| 引用本文： | 乾增珍,鲁先龙.斜坡地形高露头挖孔桩水平承载特性试验研究[J].辽宁工程技术大学学报(自然科学版),2009,28(2). |
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| 作者姓名： | 乾增珍 鲁先龙 |
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| 作者单位： | 1. 中国地质大学,北京,工程技术学院,北京100083
2. 中国电力科学研究院,北京,100192 |
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| 摘 要： | 以某山区斜坡地形220 kv输电线路高露头挖孔桩基础水平荷载现场试验为例,研究斜坡地形高露头挖孔桩基础水平荷载作用下的桩土体系稳定性及承载机理.结果表明:由于斜坡地形边界条件对水平承载性能的影响,高露头挖孔桩基础因埋深有限、嵌固程度低、土体约束作用弱,在水平力和倾覆力矩作用下埋置于斜坡地基的高露头桩基础呈刚性短桩特性,可基于m法计算分析其桩土体系的水平承载特性;桩身水平位移是设计控制因素,基于桩身位移和桩侧土压力的m值计算方法与结果,能够较好地反映试验现象.该成果对斜坡地形高露头挖孔桩水平承载特性的工程设计有一定的参考价值和指导意义.
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| 关 键 词： | 斜坡地形 高露头挖孔桩 m法 输电线路 |
Full-scale field tests on lateral bearing capacity of large diameter belled pile with long cantilever on sloping ground |
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| QIAN Zengzhen,LU Xianlong.Full-scale field tests on lateral bearing capacity of large diameter belled pile with long cantilever on sloping ground[J].Journal of Liaoning Technical University (Natural Science Edition),2009,28(2). |
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| Authors: | QIAN Zengzhen LU Xianlong |
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| Institution: | 1.School of Engineering and Technology;China University of Geosciences;Beijing 100083;China;2.China Electric Power Research Institute;Beijing 100055;China |
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| Abstract: | Based on the full-scale field tests of a 220kV transmission line along the sloping ground of large diameter belled pile with long cantilever,both the interaction law of stability between the pile foundation and the around subgrade and the reduction effect of the sloping ground have been studied.The results indicate that the belled pile with long cantilever belongs to rigid short pile and rotates around the rotating center when it is subject to the horizontal force because of the limited embedded depth and w... |
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| Keywords: | sloping ground belled pile with long cantilever m method transmission lines |
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