| 栾茂田,黎勇,林皋.非连续变形计算力学模型及其在有缝重力坝静力分析中的应用[J].水利学报,2001,32(4):0040-0047 |
| 非连续变形计算力学模型及其在有缝重力坝静力分析中的应用 |
| The discontinuous deformation mechanics model and its application in static analysis of concrete gravity dam with vertical joints |
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| DOI： |
| 中文关键词: 重力坝 界面 接解应力 坝体分缝分块 |
| 英文关键词: gravity dam interfaces contact stress blocking of concrete dam finite elements discontinuous deformation computational mechanics joints |
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| 摘要点击次数: 1622 |
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| 中文摘要: |
| 对于有缝重力坝的静力分析，基于连续介质力学的界面单元-有限元方法难于比较精确地模拟缝间的接触应力，从而无法合理地估算坝体应力与变形。本文简述了作者近年来对于多体系统所发展的非连续变形计算力学模型的基本原理，它能够根据接触界面的本构特性及其力学和运动学两方面约束条件精确地再现受力过程中界面相互作用力的传递与非连续变形状态。进而将这种方法应用于有缝重力坝的静态应力与变形分析。实例数值分析表明该模型的计算结果从定性上讲是合理的，为判断坝体缝隙的工作状态与界面应力提供了可能的途径，从而说明该模型可以作为评价多体相互作用系统的变形和界面接触应力的有力工具。 |
| 英文摘要: |
| The discontinuous deformation computational mechanics model for interaction analysis of multi-body system is developed.By using this model the transfer of interface interaction force and discontinuous deformation status of interface during loading can be accurately simulated.This method is applied to evaluate the stress and deformation of the concrete gravity dam with multiple vertical joints under static load.Numerical computational results of a dam including the normal and shear stresses along the vertical joints and dam-foundation interface are given for illustration.It is shown that the model is feasible for the behavior prediction of multi-body system with mutuple interfaces and joints of differentmaterials. |
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