面向损伤识别的独塔斜拉桥模型的设计与分析

模型试验方法是桥梁结构损伤识别研究的一种重要手段。以某虚拟的独塔斜拉桥为原型，面向损识别设计制作了独塔斜拉桥试验模型。试验模型各主要构件（主梁、主塔、斜拉索）均独立加工制作，其中主梁选用铝合金材料，截面采用箱形，划分为不同长度的阶段，各节段均采用螺栓连接。通过改变节段板厚的方法实现主梁不同损伤程度的模拟，不同位置的损伤通过更换不同位置的板厚实现，从而方便的实现了模拟模型斜拉桥主梁的各种损伤状态。采用特殊的设计实现了斜拉桥结构索力的实时测试。对模型进行了静态试验，并与有限元模型计算的结果进行了对比分析。试验研究与数值分析为今后的损伤识别研究奠定了基础。

Design and Analysis of Damage-Detected Test Model of Single-Tower Cable-stayed Bridge

Model test study is very important for damage detection of bridge structures. A single-tower cable- stayed bridge model is designed and manufactured based on a virtual single-tower cable-stayed bridge. The prin- ciple of the design and the method of the test are introduced in detail. All main members of the model such as main girder, tower and stay cable are manufactured independently. Main girder is made by alloy aluminum and is divided into different length. Every part is bolted. All kinds of main beam~ damage eases of the model can be simulated conveniently by changed girder. The tension of the stay the test model are conducted. developed for the test model. plate thickness of segment and changed plate of the different segment of main cables can be measured realtime by especial design. The static measurements for The testing results are compared with the numerical results of finite element model A platform is established for future researches.