| 微型桩复合地基承载力发挥系数试验分析 |
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| 引用本文： | 梁远森,周同和. 微型桩复合地基承载力发挥系数试验分析[J]. 河南科学, 2012, 0(10): 1503-1506 |
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| 作者姓名： | 梁远森 周同和 |
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| 作者单位： | [1]郑州市工程勘察设计协会,郑州450006 [2]郑州大学综合设计研究院,郑州450002 |
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| 摘 要： | 微型桩复合地基以列入新修订的《建筑地基处理技术规范》JGJ 79,有关复合地基承载力计算的设计参数尚需要进一步研究和积累资料.通过复合地基静载荷试验结果的分析,研究了采用新规范计算微型桩复合地基承载力时,增强体桩承载力发挥系数、桩间土承载力发挥系数,结果表明发挥系数与桩间距、桩径、垫层厚度、桩土相对刚度有关.满足新规范要求的一般设计条件下,λ可取0.9～0.95,对应β可取1.20～0.9.
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| 关 键 词： | 微型桩 复合地基 承载力 发挥系数 |
Experimental Research on the Bearing Capacity Participation Coefficient of Micro-pile Composite Foundation |
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| Liang Yuansen,Zhou Tonghe. Experimental Research on the Bearing Capacity Participation Coefficient of Micro-pile Composite Foundation[J]. Henan Science, 2012, 0(10): 1503-1506 |
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| Authors: | Liang Yuansen Zhou Tonghe |
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| Affiliation: | 1.Zhengzhou Engineering Reconnaissance Design Association,Zhengzhou 450006,China;2.Designing Institute of Zhengzhou University,Zhengzhou 450002,China) |
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| Abstract: | Micro-pile composite foundation has been listed in the newly revised＂Technical code for ground treatment of buildings＂JGJ 79.However,the bearing capacity calculation parameters of composite foundation still need more research and stockpile.In this thesis,the participation coefficient of pile and soil using the new JGJ 79 based on the experimental results of composite foundations are analyzed.Results show that the participation coefficient is related to pile spacing,pile diameter,cushion layer thickness and pile-soil relative stiffness.According to the requirement of the new technical code,λ should be 0.9～0.95 and β should be 1.20～0.9. |
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| Keywords: | micro-pile composite foundation bearing capacity participation coefficient |
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