Construction Method for Pulling Out Existing Piles and Influence of Pulling-Out Holes on the Surrounding Ground
Construction Method for Pulling Out Existing Piles and Influence of Pulling-Out Holes on the Surrounding Ground
复制标题
现有桩拔拔施工方法及拔孔对周围地面的影响
DOI：
10.1007/s10706-020-01418-y
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发表时间：
2020
影响因子：
1.7
通讯作者：
Chaiprakaikeow Susit
中科院分区：
文献类型：
--
作者：
Inazumi Shinya;Kuwahara Shuichi;Jotisankasa Apiniti;Chaiprakaikeow Susit
包括土木工程结构在内的社会基础设施的拆除不断增加，原因是这些建筑是在经济高速增长时期建造的，而这些建筑的老化以及近期人口下降导致其利用率下降。现有桩基被拔除的数量逐渐远多于新安装的桩基。然而，拔桩后，由于现有桩拆除时形成的孔（拔孔）的存在，周围地面的力学特性受到极大关注。对于向这些孔中注入的填充材料还没有规定，也没有阐明填充材料的强度如何影响周围地面。本研究通过二维静态和动态有限元分析来评估现有桩基的拔出孔对周围地面的静态和动态特性的影响。这项研究还阐明了注入这些拉出孔的填充材料所需的特殊品质。
The teardowns of social infrastructures, including civil engineering structures, have been increasing due to the aging of these structures, which were built in a period of high economic growth, and to a decrease in their utilization due the recent drop in population. The number of existing pile foundations being pulled out has gradually become a lot more than that of pile foundations being newly installed. However, after the pulling out of a pile foundation, the mechanical characteristics of the surrounding ground are of great concern due to the existence of the holes that form when the existing piles are removed (pulling-out holes). There are no regulations yet on the filling material to be injected into these holes, nor has the way that the strength of the filling material influences the surrounding ground been elucidated. The present study evaluates the manner in which the pulling-out holes of existing pile foundations influences the static and dynamic characteristics of the surrounding ground by means of a two-dimensional static and dynamic finite element analysis. The special qualities required for the filling material to be injected into these pulling-out holes are also clarified in this study.
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