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考虑黏土应变软化的锚板承载力数值分析

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Indexed by:期刊论文

Date of Publication:2014-08-15

Journal:水利与建筑工程学报

Issue:4

Page Number:124-128

ISSN No.:1672-1144

Key Words:抗拔基础;锚板;塑性剪应变;黏土;FLAC;应变软化

Abstract:在海上风荷载、波浪荷载等受力条件下,因为循环荷载导致塑性剪应变不断积累,锚板的承载力会发生应变软化现象,考虑黏土应变软化的锚板承载力分析对指导海洋工程实践有重要意义。首先采用有限差分程序FLAC中的摩尔库伦模型计算了锚板在黏土中的极限承载力,计算结果与已有研究结果吻合较好;进而,采用FLAC中的应变软化模型考虑黏土的应变软化特性,计算了单调荷载情况下锚板的承载力软化曲线,锚板残余承载力系数与土重应力叠加法计算得到的承载力系数理论值吻合较好,表明FLAC中的应变软化模型能够较好的反映黏土的应变软化特性。

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