土工基础

›› 2016, Vol. 30 ›› Issue (4): 504-506.

• 工程实录 • 上一篇    下一篇

基于非线性有限元的冲沙闸裂纹扩展分析

邹 飞1,2，陆瑜1   

  1. （1.贵州省交通规划勘察设计研究院股份有限公司，贵阳 550081；2.贵州省交通建设工程质量监督局，贵阳 550000）
  • 收稿日期:2016-06-03 出版日期:2016-08-20 发布日期:2016-08-26
  • 作者简介:邹 飞（1983-），男，博士，高级工程师，研究方向为岩石动力学、边坡极限分析等。

The Crack Propagation in a Flushing Sluice Using Non-linear Finite Element Method

ZOU Fei1,2， LU Yu1   

  1. (1.Guizhou Transportation Planning, Survey & Design Co. Ltd.,, Guiyang, 550081；
    2.Construction Engineering Quality Supervision Bureau of Guizhou Province Guiyang, 550000)
  • Received:2016-06-03 Online:2016-08-20 Published:2016-08-26

摘要： 针对某冲沙闸底板及闸墩出现的裂缝问题，采用非线性有限元计算来分析裂缝区域在完整、裂缝和恢复强度状态下的张开情况。通过裂缝区张开单元体积统计和修复强度敏感性分析以及应力比分析得到结论：裂缝区域材料强度修复至完整强度的50%，张开单元体积不再发生变化，应力状态基本恢复到完整状态，保证冲沙闸的正常运行。

关键词: 冲沙闸, 裂缝, 非线性有限元, 恢复, 张开

Abstract: Flushing sluice is a hydraulic structure for transporting silt of upper stream of the river or the canal using the fast water flow. The cracks are often encountered at the bottom slab and caisson of the lock structure. The propagation of these cracks in the relative integral area, cracked region and recovered strength conditions are analyzed by nonlinear finite element method. Research conclusions can be obtained throughout the statistical summary of the volume of elements with open cracks, the analysis of the sensitivity of the recovered strength as well as the comparative study of the stress ratio of the cracked area. The results show that, when the material strength of the cracked region recovers to 50% of recovered strength, the volume of the cracked elements will not change, and the stress state has basically returned to the fully recovered state and the safe operation of flushing sluice can then be assured.

Key words: Flushing Sluice, Cracks, Nonlinear Finite Element Method, Recovery, Cracked Element