Pervious Concrete Pile: An Innovation Ground Improvement Alternative
Pervious Concrete Pile: An Innovation Ground Improvement Alternative
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DOI：
10.1061/9780784412787.207
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发表时间：
2013-03
期刊：
影响因子：
--
通讯作者：
Lusu Ni;M. Suleiman;A. Raich
中科院分区：
文献类型：
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作者：
Lusu Ni;M. Suleiman;A. Raich
粒料墩通常用于改善软粘土、粉土和松散砂的力学性能，并允许固结和排水。然而，颗粒墩的响应取决于周围土壤提供的围压，这限制了它们在非常软的粘土、淤泥、有机土和泥炭土中的使用。如果一种材料具有较高的刚度和强度，其特性与周围土壤无关，并且具有足够的渗透性，则它将更适合于改善土壤条件较差的场地。本研究的重点是开发一种创新的地基加固方法，使用透水混凝土桩。通过一系列室内试验对透水混凝土材料的性能进行了评价。此外，大规模的垂直荷载试验已经进行了比较的反应的颗粒墩与透水混凝土桩和比较的反应的透水混凝土桩安装使用两种不同的方法（一个与预制桩和其他使用的方法模拟原位或现场安装技术）。本文总结了材料试验和初步竖向荷载试验的结果。
Granular piers are commonly used to improve the mechanical properties and allow for consolidation and drainage of soft clays, silts, and loose sands. The response of granular piers; however, depends on confining stress provided by the surrounding soil, which limits their use in very soft clays, silts, and organic and peat soils. If a material has higher stiffness and strength with properties independent of surrounding soil, and adequate permeability, it will be more suitable to improve sites with poor soil conditions. This research focuses on developing an innovative ground improvement method using pervious concrete piles. A series of laboratory tests were conducted to evaluate the properties of pervious concrete material. Furthermore, large-scale vertical load tests have been conducted to compare the response of a granular pier with a pervious concrete pile and to compare the response of pervious concrete piles installed using two different methods (one with precast pile and the other using a method simulating in-situ or field installation techniques). This paper summarizes the results of the material tests and the preliminary vertical load tests.