基于相似原理的弯梁桥内外侧支反力差异性模型试验研究

基于相似理论,以白云山立交桥某匝道一联三跨预应力弯梁桥为工程背景设计制作了有机玻璃模型,采用几种荷载工况,重点对内外侧支反力的差异性进行了详细的测试分析,通过测试值与基于梁格法建立的空间有限元计算模型获得的理论值进行对比,总结了预应力弯梁桥内外侧支反力的变化规律,同时给出了几点具有工程指导意义的建议.

Research on Model Test of Inward & Outward Reaction Difference of Curved Girder Bridge based on Similarity Theory

Based on similarity theory, taking pre-stressed curved girder bridge of a ramp of Baiyunshan overpass with one joint and three cross as the engineering background, we made the Perspex model and used several load cases to mainly test and analyze the inward and outward reaction differences. It has been summarized the regularity of inward and outward reaction of pre-stressed curved girder bridge by comparing the test value with the theoretical value acquired by the FEA model with the Lange method, and the advices instructive to engineering is proposed.