| 微型桩芯搅拌桩破坏模式与承载力设计研究 |
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| 引用本文： | 包华,邓亚光.微型桩芯搅拌桩破坏模式与承载力设计研究[J].建筑科学,2011,27(11). |
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| 作者姓名： | 包华 邓亚光 |
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| 作者单位： | 1. 南通大学建筑工程学院,江苏南通,226019
2. 万通建设集团有限公司,江苏南通,226400 |
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| 基金项目： | 建标[2011]17号-134项目《劲性复合桩技术规程》 |
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| 摘 要： | 微型桩芯水泥搅拌桩在江苏沿海沿江地区的地基加固工程中已有应用,并逐步推广。本文阐述了该复合桩的构造特点、复合桩复合地基的工作特性,分析了复合桩在竖向荷载作用下的外圈界面、无芯段桩体水泥土、有芯段桩体水泥土、内圈界面与桩芯混凝土破坏等五种破坏模式,通过工程案例介绍了复合桩的承载力、桩芯优化长度和复合桩复合地基承载力设计方法。
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| 关 键 词： | 复合桩 构造 工作特性 破坏模式 设计方法 |
Failure Modes and Design Method of Bearing Capacity on Micro-Core Cement Mixing Piles |
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| BAO Hua,DEN Ya-guang.Failure Modes and Design Method of Bearing Capacity on Micro-Core Cement Mixing Piles[J].Building Science,2011,27(11). |
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| Authors: | BAO Hua DEN Ya-guang |
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| Affiliation: | BAO Hua(College of Civil Engineering,Nantong University,Nantong 226019,Jiangsu,China) DEN Ya-guang(Wantong Construction Group Co.,Ltd.,Nantong 226400,China) |
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| Abstract: | Composite pile foundation of micro-core cement mixing piles is widely used in the coastal areas and along the Yangtze River in Jiangsu Province gradually.The constructional details and characteristics of the composite pile foundation are presented.The five-failure modes under the vertical loads are analyzed,including outer interface,non-core segments of soil-cement pile,core segments of soil-cement pile,inner interface,concrete of pile core.The bearing capacity of the composite pile,the optimal length of pi... |
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| Keywords: | composite pile constructional detail working characteristic failure mode design method |
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