| 斜靠式拱桥吊杆张力计算模型探讨 |
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| 引用本文： | 胡锋.斜靠式拱桥吊杆张力计算模型探讨[J].长沙交通学院学报,2011,27(2):30-33,45. |
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| 作者姓名： | 胡锋 |
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| 作者单位： | 河南省交通科学技术研究院有限公司,河南郑州,450006 |
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| 基金项目： | 国家自然科学基金项目(50748028); 河南省杰出人才计划项目(084200510003) |
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| 摘 要： | 以斜靠式拱桥——平顶山市城东河路湛河桥主桥为工程实例，采用有限元程序MIDAS／Civil对该桥进行空间有限元离散，建立了斜靠式拱桥空间有限元计算模型．分别采用一次落架法、用吊杆张力设计值作为吊杆张拉控制力的计算方法及影响矩阵法3种不同方法，求解了吊杆初始张拉控制力．由3种不同计算模型得到的结果进行对比可以看出：采用影响矩阵法确定吊杆张力的计算模型得到的吊杆张力响应值与设计值吻合较好，保证了成桥时桥梁的内力和线形，是斜靠式拱桥确定吊杆张力的合适计算模型，对复杂空间异型梁拱组合桥的吊杆张力确定有较大的参考价值；其他两种方法计算结果的偏差均较大．
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| 关 键 词： | 斜靠式拱桥 计算模型 吊杆 初始张力 |
Research on calculating model of suspenders initial tension of double X-shape arch bridge |
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| HU Feng.Research on calculating model of suspenders initial tension of double X-shape arch bridge[J].Journal of Changsha Communications University,2011,27(2):30-33,45. |
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| Authors: | HU Feng |
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| Institution: | HU Feng(Henan Transportation Research Institute Co.,Ltd,Zhengzhou 450006,China) |
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| Abstract: | As an example,the main bridge of Zhanhe Bridge,a double X-shape arch bridge,over Chengdong River in Pingdingshan is discribed by the spatial FEM with MIDAS/Civil program.With the FEM model,suspenders' initial tensions of the bridge are solved using three different methods of overall drop-frame method,using the design value of suspenders as its control tension method and influencing matrix method.By comparative analysis,it can be concluded that influencing matrix method,from which is suspender initial tensio... |
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| Keywords: | double X-shape arch bridge calculating model suspender initial tension |
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