Numerical and Analytical Studies of 3D Effects on Pullout Capacity of Anchor Blocks in Granular Compacted Fill
Numerical and Analytical Studies of 3D Effects on Pullout Capacity of Anchor Blocks in Granular Compacted Fill
复制标题
粒状压实填料中锚块拔出能力的 3D 影响的数值和分析研究
DOI：
10.1007/s40891-021-00259-w
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
K. Khalaf
中科院分区：
文献类型：
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作者：
A. Sharma;Marwan Alzaylaie;Ramesh Vandanapu;K. Khalaf
一般地，岩土建筑工程如板桩墙被设计为平面应变问题。在许多实际情况下，即使分析中需要考虑3D效应，设计师也倾向于采用保守的2D分析，导致设计不经济。本文讨论了迪拜的一个项目，该项目设计了锚块板桩墙连接件，以保留6.25 m的压实填土高度，并考虑锚块中的三维效应，以应对未来的开挖。锚块用于控制板桩中计算的初始大挠度（> 50 mm）。考虑三维效应对锚块进行了分析，与假设平面应变问题相比，三维效应导致抗拔力增加（2.3倍）。同时，进行了数值分析，与2D分析相比，3D分析中的抗拔力增加（1.8倍），这证实了在分析锚块时考虑3D效应的重要性，从而在锚块设计中进行后续优化。
Generally, geotechnical construction works such as sheet pile walls are designed as plane-strain problems. In many practical cases, even if there is a need to consider 3D effects in the analysis, the designer tends to adopt conservative 2D analysis resulting in uneconomical design. This paper discusses a project in Dubai where sheet pile wall tie backed to anchor block was designed to retain 6.25 m height of compacted fill and account for future excavation considering 3D effect in anchor blocks. Anchor blocks were used to control the initial large deflections (> 50 mm) calculated in the sheet pile. Anchor blocks were analyzed considering 3D effects which resulted in increased pullout resistance (2.3 times) compared to assuming it as plane-strain problem. Simultaneously, numerical analyses were performed and an increase in pullout resistance (1.8 times) was noticed in 3D analysis compared to 2D analysis which confirms the importance of considering 3D effects in analyzing anchor blocks fetching subsequent optimization in anchor block design.