| 基于现场试验的新型斜拉——梁拱组合体系桥梁力学性能评估 |
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| 引用本文： | 马文刚,黄侨,陈晓强,任远.基于现场试验的新型斜拉——梁拱组合体系桥梁力学性能评估[J].东南大学学报,2012(1):64-72. |
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| 作者姓名： | 马文刚 黄侨 陈晓强 任远 |
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| 作者单位： | 东南大学交通学院 |
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| 摘 要： | 为了研究新型斜拉-梁拱组合体系桥梁的力学性能,以跨越宜兴大溪河的荆宜大桥为对象,对现场静、动载作用下结构的实测反应与相应的数值计算结果进行了对比分析研究.首先,给出了试验方案、任务、相应的测试方法及引用的相关规范；然后分别建立了三维Ansys实体模型和三维Midas杆系模型；最后,对比分析了模型计算结果与试验测试结果,...
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| 关 键 词： | 拱桥 斜拉桥 竖向荷载 现场试验 三维模型 |
Mechanical performance evaluation of a new type of cable-stayed beam-arch combination bridge based on field tests |
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| Ma Wengang Huang Qiao Chen Xiaoqiang Ren Yuan.Mechanical performance evaluation of a new type of cable-stayed beam-arch combination bridge based on field tests[J].Journal of Southeast University(English Edition),2012(1):64-72. |
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| Authors: | Ma Wengang Huang Qiao Chen Xiaoqiang Ren Yuan |
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| Institution: | Ma Wengang Huang Qiao Chen Xiaoqiang Ren Yuan (School of Transportation,Southeast University,Nanjing 210096,China) |
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| Abstract: | In order to study the mechanical performance of a new type of cable-stayed beam-arch combination bridge,the results of field static and dynamic load tests are comparatively analyzed with numerical results based on the Jingyi bridge straddling the Daxi River in Yixing.First,the test scheme,tasks,the corresponding measure method,as well as the relevant codes are described.Secondly,two sets of three-dimensional finite element models are established.One is Ansys which uses the solid element and the other is Midas which adopts the beam element.Finally,the experimental and analytical results are comparatively analyzed,and they show an agreement with each other.The results show that the bridge possesses adequate load-carrying capacity under all static load cases,but the capacity of dissipating external input energy is insufficient due to the relatively smaller damping ratio.The study results can provide a reference for further study and optimization of this type of bridge.Calibrated finite-element models that reflect the real conditions can be used as a baseline for future maintenance of the bridge. |
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| Keywords: | arch bridge cable-stayed bridge vertical load field test three-dimensional model |
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