| 吊杆损伤下钢管混凝土拱桥的超载研究 |
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| 引用本文： | 刘铁林,王刚,刘博.吊杆损伤下钢管混凝土拱桥的超载研究[J].沈阳建筑工程学院学报(自然科学版),2010,26(1). |
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| 作者姓名： | 刘铁林 王刚 刘博 |
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| 作者单位： | 沈阳建筑大学土木工程学院,辽宁,沈阳,110168 |
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| 摘 要： | 目的 研究钢管混凝土拱桥在超载车辆作用下及短吊杆、1/4跨度处吊杆损伤时的吊杆应力变化,为钢管混凝土拱桥的安全运营提供依据.方法 建立钢管混凝土拱桥有限元模型,对钢管混凝土拱桥在2辆超载车一侧加载及吊杆损伤情况进行模拟研究.结果 有限元方法 计算得到的位移值与实测位移值相符,验证了分析模型正确性;超载作用下,短吊杆单独损伤45%以上时,短吊杆的应力超出许用应力;1/4跨度处吊杆单独损伤47%以上时,该处吊杆的应力超出许用应力;短吊杆、1/4跨度处吊杆同时损伤时,吊杆应力比相应的单独损伤情况的吊杆应力大,存在隐患更大些.结论 吊杆完好情况下,钢管混凝土拱桥通过超载车时没有安全隐患;当短吊杆、1/4跨度处吊杆存在一定损伤程度情况下,有超载车通过该桥时,存在一定的隐患;该研究对于吊杆损伤情况下拱桥超载方面的研究具有参考价值.
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| 关 键 词： | 钢管混凝土拱桥 超载 吊杆损伤 模拟 |
Research on Over-Loading of Concrete-Filled Steel Tubular Arch Bridge with Suspender Damage |
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| LIU Tielin,WANG Gang,LIU Bo.Research on Over-Loading of Concrete-Filled Steel Tubular Arch Bridge with Suspender Damage[J].Journal of Shenyang Archit Civil Eng Univ: Nat Sci,2010,26(1). |
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| Authors: | LIU Tielin WANG Gang LIU Bo |
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| Affiliation: | LIU Tielin,WANG Gang,LIU Bo(School of Civil Engineering,Shenyang Jianzhu University,Shenyang China,110168) |
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| Abstract: | The paper aims to investigate the suspender stresses for the safety of a concrete-filled steel tubular arch bridge under overloading vehicles with reducing cross-sectional areas of the shortest suspender and the suspender at the 1/4 length of the span.The finite element model of the concrete-filled steel tubular arch bridge was established,and the suspender damage of the bridge with two overloading cars on one side was simulated.The validity of the model is verified by comparing computed displacement values... |
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| Keywords: | concrete-filled steel tubular arch bridge overloading damage of suspender simulation |
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