上承式混凝土葵形拱桥静力荷载试验研究

Study on Static Load Test of Deck-type Sunflower-shaped Concrete Arch Bridge

为检验(40+4×58+40)m上承式混凝土葵形拱桥的施工质量,评价桥梁结构实际承载能力,验证桥梁结构设计参数选取的合理性,对桥梁进行了静力荷载试验。通过优化荷载试验工况,测试静力荷载试验作用下结构控制截面的应力、变形,并与理论计算结果比较。结果表明,试验桥跨满足正常使用状态下的设计荷载等级使用要求。

In order to verify the construction quality of a deck-type sunflower-shaped concrete arch bridge with a span combination of(40+4×58+40)m,evaluate the actual bearing capacity of the bridge structure,and verify the rationality of the selection of bridge structure design parameters,static load test was conducted on the bridge.By optimizing the load test conditions,the stress and deformation of the structural control section under static load test were tested and analyzed.Comparing with the theoretical calculation results,it showed that the test bridge span met the design load level requirements under normal use.