结构模型试验的工程检测应用研究

The study on analysis of the construction modle and technology of civil engineering tests

一座已使用10余年的下承式系杆拱桥,为预应力混凝土梁、拱组合体系。模型试验来分析处理,得出目前的受力状态,并通过对实桥梁检测加以验证。结合计算、模型试验和实桥检测资料,开展工作:通过模型试验模拟实桥的受力现状,对构件进行有关测试和计算,并与桥梁现场进行拱肋、吊杆等构件的实测数据进行对比,得出具有实际应用的有关结论和建议。

Based on the structural mechanics capability of the arch bridge, finite element method and similitude theory and summarized the technique and achievement of corresponding bridge structure experiment, we had a research on theory analysis and modeling experiment of the combination of arch and beam. Designed modeling of the combination of arch and beaux in found of the similitude theory. Calculated the actual bridge internal forces based on the plane and special finite element program. Making sure the experiment effect, decided the survey points and load styles, comparing the actual stress to calculated results of the controlling section. Created a model to analysis the stress of the changed section of arch rib, the cross section of the beam, and the combination of arch and beam, and concluded the actual responding load of the bridge, under the large-scale finite element analysis program： ANSYS.