摘要
通过仿真模型与原型在弹性和弹塑性阶段的相似比,将钢筋混凝土多纵梁渡槽模型受力性能实测结果反演为原型受力状态。采用三维非线性有限元分析方法,计算了渡槽原型在自重荷载、设计水位荷载、校核水位荷载作用下的受力性能,并与原型反演值进行了对比,证明了渡槽模型试验测得的纵横梁和侧墙截面开裂荷载、应力及渡槽竖向位移和支座反力的合理性,反演计算后可用于正确评价渡槽原型的正常使用受力性能。
Based on the similarity ratios of simulated model to the prototype in elastic and plastoelastic stages, the loading behaviors of the simulated model are back analyzed to the prototype for the reinforced aqueduct with multi-longitudinal beams. Utilizing the three dimensional nonlinear finite element method, the bearing properties of the prototype reinforced concrete aqueduct are calculated under gravity load, water loads at design level and checking level. The calculation results are compared with the back analysis. The accuracy of the simulated model is demonstrated including the cracking load, stresses of longitudinal-horizontal beams and the side wall, the aqueduct vertical displacements and support counter-forces. The simulated model can be used to evaluate the normal service behaviors of the prototype aqueduct after back analysis.
出处
《工程力学》
EI
CSCD
北大核心
2010年第10期150-154,共5页
Engineering Mechanics
基金
河南省杰出青年科学基金项目(04120002300)
河南省高校创新人才培养工程培养对象基金项目(豫教高2004294号)
关键词
水工结构工程
钢筋混凝土渡槽
多纵梁
仿真模型试验
反演
非线性分析
hydraulic structure engineering
reinforced concrete aqueduct
multi-longitudinal beams
emulate model test
back analysis
nonlinear analysis
