深基坑支护双排重叠桩墙抗弯刚度研究

IF 0.4 Q4 ENGINEERING, GEOLOGICAL Journal of the Korean Geosynthetic Society Pub Date : 2018-01-01 DOI:10.12814/jkgss.2018.17.1.033
Won-Hyuk Choi, You-Sung La, Bumjoo Kim
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引用次数: 0

摘要

双排重叠桩墙是韩国目前正在开发的一种新型的高抗弯刚度和防水深基坑支护挡土墙体系。两排重叠桩墙是由连续的四轴(或两轴)螺旋桩相互重叠并以之字形排列而成。本文采用理论和数值方法研究了两排重叠桩墙的抗弯刚度,并考虑了截面形状的影响。研究结果表明,两排桩形成的两排重叠桩墙的抗弯刚度明显高于传统的单排桩墙,如现浇桩(CIP)和割桩墙(SPW),而桩间重叠长度对抗弯刚度的影响相对较小。
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A Study on Flexural Rigidity of Two-row Overlap Pile Wall for Deep Excavation Support
Two-row Overlap Pile wall is a novel retaining wall system with high flexural rigidity and waterproofing for deep excavation support currently being developed in Korea. The Two-row Overlap Pile wall is constructed by making an overlap between consecutive four-axis (or two-axis) auger piles which themselves are overlapped and arranged in zigzag manner. In this study, the flexural rigidity of the Two-row Overlap Pile wall, including the effect of cross-sectional shape, was examined using both theoretical and numerical approaches. The results of investigation suggested that the Two-row Overlap Pile wall formed with two-row piles exhibit greatly higher flexural rigidity than conventional one-row pile walls such as Cast in place pile (CIP) and Secant pile wall (SPW), whereas the effect of overlap length between piles on the flexural rigidity is relatively minimal.
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