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Investigation on Behavior of Rock-socketed Retaining Piles for Deep Excavation

机译：深孔基坑支护桩性能研究

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In the soil-rock mixed areas where the soils overlie on the rock layer, the rock-socketed retaining piles have been widely used for deep excavations. Up to date, little attention has been paid to performance of the rock-socketed piles used for deep excavation. Therefore, using the two-dimensional finite element program, Plaxis2D, a typical deep excavation engineering supported by rock-socketed piles with the whole embedded portion in rock is analyzed to investigate behavior of the rock-socketed retaining piles in detail. Computation results have shown that for rock-socketed retaining piles used in deep excavations, there exists an ultimate or a maximum rock-socketed depth which can be estimated by the pile diameter. For the ultimate rock-socketed depth, in the final excavation step, the first zero bending moment point of the rock-socketed part of the pile generally locates near the top surface of the rock layer. When the excavated surface is located at the top surface of the rock layer, the corresponding shear force distribution of the rock-socketed pile has an extremum at the same position.

机译：在土壤覆盖在岩石层上的土石混合区中，嵌有岩石的挡土桩已被广泛用于深基坑工程。迄今为止，很少有人关注用于深基坑的嵌岩桩的性能。因此，使用二维有限元程序Plaxis2D，分析了一个典型的深孔工程，该工程由嵌岩桩支撑着整个埋入岩石的部分，以详细研究嵌岩挡土桩的性能。计算结果表明，对于在深基坑中使用的嵌岩挡土桩，存在一个可以通过桩直径估算的极限或最大嵌岩深度。对于最终的嵌岩深度，在最后的挖掘步骤中，桩的嵌岩部分的第一个零弯矩点通常位于岩层顶面附近。当开挖面位于岩石层的顶面时，嵌岩桩的相应剪切力分布在同一位置具有一个极值。

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来源
《Fracture and strength of solids VII》|2010年|p.825-830|共6页
会议地点 Kuala Lumpur(MY);Kuala Lumpur(MY)
作者
X. L. Liu; H. Zhou;
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作者单位

Key Lab. of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China;

Key Lab. of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
Piles; Rock-socketed depth; Excavation;

机译：桩;嵌岩深度；挖掘;

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4. Investigation on Behavior of Rock-socketed Retaining Piles for Deep Excavation [C] . X. L. Liu, H. Zhou International Conference on Fracture and Strength of Solids . 2011

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Investigation on Behavior of Rock-socketed Retaining Piles for Deep Excavation

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