Formation of a Dispersed Soil Arch in Embankments Supported by Columns with Cap Beams and the Development of System Efficacy
Formation of a Dispersed Soil Arch in Embankments Supported by Columns with Cap Beams and the Development of System Efficacy
复制标题
盖梁柱支撑路堤分散土拱的形成及系统效能的发展
DOI：
10.1061/9780784484067.023
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Michalowski, Radoslaw L.
中科院分区：
文献类型：
--
作者：
Brzeziński, Karol;Józefiak, Kazimierz;Michalowski, Radoslaw L.
路堤桩支撑体系高效的过程是在路堤填土中形成土拱的过程。本演示中考虑的具体系统是通过软粘土插入一排排柱子上的盖梁来支撑路堤填土。这样的系统适合进行二维分析。在许多设计方法中猜测的形成不同的拱形结构，并未得到证实。然而，根据计算的应力分布和主要主应力轨迹，可以识别跨越两个相邻帽梁之间距离的“分散”拱门。在低层路堤中未发现分散拱化现象，软土的沉降是一种沿整个路堤高度扩展的塌陷机制，导致路基冠部的不均匀沉降。这项研究的重点是桩支撑系统的效果，以及更好地了解路堤顶部差异沉降背后的机理。
The process credited for high efficacy of embankment pile support systems is the formation of soil arches in the embankment fill. The specific system considered in this presentation is one with cap beams over rows of columns inserted through soft clay to support an embankment fill. Such a system lends itself to a two-dimensional analysis. A formation of distinct arches, as conjectured in many design approaches, was not confirmed. However, based on the calculated stress distribution and the major principal stress trajectories, one can identify “dispersed” arches spanning the distance between two neighboring cap beams. The dispersed arching was not identified in low embankments, whereupon the settlement of the soft soil, a collapse mechanism propagated through the entire embankment height causing differential settlement of the embankment crown. This study was focused on the efficacy of the pile support system and on better understanding of the mechanisms behind the differential settlement at the crown of the embankment.
影响因子：
5.8
作者：
R. Michalowski;N. Park
通讯作者：
N. Park
影响因子：
5.3
作者：
K. Brzeziński;R. Michalowski
通讯作者：
K. Brzeziński;R. Michalowski