In situ evaluation and analysis of improvement effects of pervious concrete pile on alluvial silt ground
In situ evaluation and analysis of improvement effects of pervious concrete pile on alluvial silt ground
复制标题
冲积淤泥地基透水混凝土桩改良效果现场评价与分析
DOI：
10.1080/17486025.2019.1651404
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发表时间：
2019-08
期刊：
影响因子：
--
通讯作者：
Wang Yi-Lin
中科院分区：
文献类型：
--
作者：
Jin Qing;Cui Xin-Zhuang;Cui She-Qiang;Zhang Jiong;Lian Feng;Wang Xue-Zhi;Wang Yi-Lin
摘要自透水混凝土桩（PCP）作为一种地基加固技术的概念提出以来，人们对PCP复合地基的性状进行了数值模拟和小型试验研究。然而，该技术尚未在现场实施。本文采用振动沉管法施工PCP桩，并进行了一系列的试验，以评价PCP桩复合地基的性状。桩芯试验表明，振动沉管法是一种适合于单螺杆泵施工的方法。与碎石桩和水泥土搅拌桩相比，水泥土搅拌桩显著提高了复合地基的固结时间速率，提高了复合地基的承载力，增大了桩土应力比。预应力混凝土桩还可以有效地降低振动引起的加速度和超静孔隙水压力，从而缓解地基液化，减少上部结构的破坏。本文的工作对螺杆泵的设计和安装具有一定的指导意义。
ABSTRACT Since the concept of pervious concrete pile (PCP) was put forward as a technology of ground improvement, some numerical simulations and small-scale tests have been performed to study the properties of PCP composite foundation. However, this technology has not been implemented in field. In this work, PCPs were installed by employing the method of vibrating-sinking tube and a series of tests are performed to evaluate the properties of PCP composite foundation. The tests on pile cores indicate the method of vibrating-sinking tube is suitable for installation of PCP. Compared with gravel column and soil-cement mixed pile, PCPs significantly increase the time rate of consolidation, improve the bearing capacity of composite foundation and increase pile-soil stress ratio. PCPs can also effectively reduce the acceleration and excess pore water pressure induced by vibration, and thus mitigate liquefaction of ground and reduce the damage of upper structure. This work is helpful for the design and installation of PCP.
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影响因子：
3.1
作者：
A. P. F. Pinto;J. Rodrigues
通讯作者：
A. P. F. Pinto;J. Rodrigues
影响因子：
7.4
作者：
P. Villard
通讯作者：
P. Villard
DOI：
10.1061/9780784412787.207
发表时间：
2013-03
期刊：
--
影响因子：
--
作者：
Lusu Ni;M. Suleiman;A. Raich
通讯作者：
Lusu Ni;M. Suleiman;A. Raich
DOI：
10.1016/s1462-0758(01)00065-6
发表时间：
2002-09
期刊：
Urban Water
影响因子：
--
作者：
W. Schlüter;C. Jefferies
通讯作者：
W. Schlüter;C. Jefferies
DOI：
--
发表时间：
2013
期刊：
Journal of Shandong University
影响因子：
--
作者：
N. Zhang
通讯作者：
N. Zhang