摘要
以建成已经57年的宁夏七星渠红柳沟渡槽为对象,采用现场质量检测、现场载荷试验和三维有限元方法,依据现行规范规定的标准,对渡槽进行质量检测和整体结构的静力、动力安全性评价。结果表明:红柳沟渡槽支撑体系质量良好,而上部槽体质量较差;整体结构在静力作用下安全性有保障,但在地震作用下不满足现行规范的要求。分析证明,现场载荷试验和三维有限元分析相结合的方法能够有效评价红柳沟渡槽整体结构的安全性,同时为老旧渡槽安全评价提供一种新思路。
Taking Hongliugou Aqueduct as the object which was built 57 years ago in Ningxia ,,on‐site experiment including loading test as well as in‐situ quality test and three‐dimensional finite element analysis method were adopted to evaluate the quality of the aq‐ueduct structure and monitor the security of structure under static and dynamic status ,based on the standards of current specifica‐tions .The results show that Hongliugou Aqueduct Support System meets the safety requirements but the upper aqueduct＇s box does not .The security of the structure under the effect of static security is guaranteed ,yet structure safety will not meet the requirements of the current specification under the action of the earthquake .The combination of field loading test and three‐dimensional finite ele‐ment analysis turns out to be an effective method of evaluating the whole structure safety of Hongliugou Aqueduct .Meanwhile ,it provides a new track for the safety evaluation of old aqueduct .
出处
《中国农村水利水电》
北大核心
2015年第10期151-156,共6页
China Rural Water and Hydropower
基金
国家自然科学基金项目(51279171)
关键词
老旧渡槽
安全性
载荷试验
有限元
动静力分析
old aqueduct
security
load test
finite element
analysis of dynamic and static force
