摘要
【目的】针对汶川大地震使沥水沟渡槽支撑结构遭受了不同程度的损坏,及其该渡槽已运行30多年存在不同程度老化的现状,对沥水沟渡槽承载力进行复核,为其加固或重建决策提供参考。【方法】利用有限元法对沥水沟渡槽支撑结构进行静力、动力分析,并通过现场检测混凝土强度,依据现行规范计算理论及方法对构件承载力进行复核。【结果】复核结果表明,该渡槽支撑结构在通过设计流量时承载力难以满足安全需要。【结论】为保证沥水沟渡槽安全运行,需对其进行加固或重建。
[Objective] The bearing structure of lishui ditch aqueduct which was heavily damaged in Wenchuan Major earthquake has been running for more than 30 years. According to its current condition of damage and aging and demands of program decision, it is necessary to check its bearing capability and rationally evaluate its safety degree. The check results will supply theoretical reference for reinforcement or rebuilding. [Method] With FEM,the structure static and dynamic analysis of lishui ditch aqueduct bracing structure was made,and using site detection concrete strength and according to current code,its bearing capability was checked. [Result] The study shows that bearing capability of aqueduct bracing was not satisfactory under load case of passing through design flow. [Conclusion] This aqueduct can be used after being reinforced or rebuilt.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2009年第12期218-222,228,共6页
Journal of Northwest A&F University(Natural Science Edition)
关键词
渡槽
动静力分析
支撑结构
承载力复核
aqueduct
static and dynamic analysis
bracing structure
checking of a section bearing
