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Design Risks of Ground Improvement Methods Including Rigid Inclusions

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ljmtidilgw 发表于 2013-7-9 18:16:06 | 显示全部楼层 |阅读模式
ABSTRACT

After an introductory presentation of design approaches the risks involved are investigated. Considered are different ground improvement methods, like soil mixing, vibro compaction and vibro stone columns, as well as pile-like supporting elements, including vibro concrete columns and full displacement columns named rigid inclusions.
The difference in stiffness of the inserted material and the soil determines the design and the risks involved. Three categories with increasing risk are proposed. Ground improvement methods, ductile in compliance with EN 1997–1 and DIN 1054, proved to be extraordinary robust and present only a small risk with regard to a possible variation of soil and material parameters and loads. The design is usually determined by the serviceability limit state.
Risks increase with the application of non-ductile methods with small column diameter, like rigid inclusions, because the ultimate limit state is controlling the behaviour. Namely, in order to mobilize high skin friction, the lower and upper end of the column have to fail during punching in the soil below and the load transfer platform above. Even a small variation in material parameters, system geometry or loads may lead to a complete loss of bearing capacity and progressive failure, resulting in expensive damages of civil engineering structures and time consuming repair works.


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鲜花(279) 鸡蛋(4)
 楼主| ljmtidilgw 发表于 2013-7-9 18:16:38 | 显示全部楼层
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Design Risks of Ground Improvement Methods Including Rigid Inclusions.pdf

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sjzdh 发表于 2013-7-9 19:02:03 | 显示全部楼层
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yangfu 发表于 2013-7-10 09:09:04 | 显示全部楼层
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hwf222 发表于 2020-4-12 00:50:44 | 显示全部楼层
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zong2006 发表于 2020-4-13 08:45:17 | 显示全部楼层
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zong2006 发表于 2020-4-13 08:47:04 | 显示全部楼层
一篇不错的论文,不错
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hll2118 发表于 2021-5-4 20:49:54 | 显示全部楼层
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abuhan 发表于 2021-5-5 05:19:33 | 显示全部楼层
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zspkd 发表于 2021-5-6 12:44:12 | 显示全部楼层
full displacement columns named rigid inclusions,咋翻译成汉语?
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