潘  迪，  陈彦江，  闫维明，  杨小森
    （北京工业大学建工学院，北京100124）

[摘要] 针对钢筋混凝土简支梁桥的破坏状况多由不同位置的开裂裂缝引起，提出了一种针对钢筋混凝土简支梁桥实验室模拟裂缝的新方法，以更好地研究钢筋混凝土简支梁桥裂缝的开展问题。对试验的设计和试验过程进行了描述，对裂缝的特点进行了不同阶段的研究。应用ANSYS软件进行了非线性加载模拟以及裂缝开展模拟，通过利用实验室静力加载钢筋混凝土简支梁试验结果对比，认为这种分析方法可行。
[关键词] 简支梁桥；开裂裂缝；数值模拟
中图分类号：TU375.1    文献标识码：A  文章编号：1002-848X(2011) S2-0173-04

Study on problems of reinforcement concrete simply supported girder bridge crack development
Pan Di, Chen Yanjiang, Yan Weiming, Yang Xiaosen
( The College of Architecture and Civil Engineering,  Beijing University of Technology,  Beijing 100124,  China)

Abstract: Focus on the destructive forms of civil reinforcement concrete simply supported girder bridge which was destroyed by many different cracks in different position, a new method was suggested which could be used to simulate the cracks on the reinforcement concrete simply supported girder bridge in laboratory, to research the problems of development of cracks on the reinforcement concrete simply supported girder bridge. The design and process of the experiment were described, and the cracks character was researched. ANSYS was used to simulate the process of nonlinear load and the development of cracks,comparing with the results of dates from the experiment. The results were proved feasible.
Keywords: simply supported girder bridge; crack; numerical simulation