摘要
以杭州湾跨海大桥耳板销铰式索梁锚固结构为研究对象,进行13∶缩尺模型试验,研究在北航道桥最长边索1.0、1.4及1.7倍设计索力作用下,耳板的应力分布;研究耳板与钢箱梁斜腹板连接的传力途径,考察螺栓受力不均匀性和销铰可转动性;通过该索在设计最大、最小索力作用下的低周反复荷载试验研究耳板螺栓紧固性能;最后通过有限元仿真分析和模型试验结果共同验证该桥索梁锚固结构传力可靠性和构造合理性。研究表明:该桥的耳板式索梁锚固结构传力可靠、构造合理,是较为理想的索梁锚固形式。
A 1：3 model of the cable anchorage of the Hangzhou Bay Bridge is tested. The bridge is a steel box girder type. The stress distribution, force transfer and safety of the ear distribution and rotation performance of the pin-hinge, with the cable force, are investigated. The safety and rationality of the anchorage element analysis. The results indicate that the cable anchorage of th reasonably well-designed anchorage structure. plate and steel box girder, the internal force force ranging from 1.0 to 1.7 times of the design are validated by the model test and the finite e main girder of the Hangzhou Bay Bridge is a
出处
《土木工程学报》
EI
CSCD
北大核心
2007年第1期49-53,59,共6页
China Civil Engineering Journal
关键词
斜拉桥
锚固区
销铰式连接
模型试验
应力状态
cable-stayed bridge
anchorage
pin-hinge connection
model test
stress state
