首页> 外文会议>Conference on Connections Between Steel and Concrete Vol.2 Sep 10-12, 2001 Stuttgart, Germany >BEHAVIOR AND DESIGN OF STEEL GIRDER-TO-CONCRETE COLUMN CONNECTION FOR A CANTILEVER-CONSTRUCTION HIGHWAY BRIDGE
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BEHAVIOR AND DESIGN OF STEEL GIRDER-TO-CONCRETE COLUMN CONNECTION FOR A CANTILEVER-CONSTRUCTION HIGHWAY BRIDGE

机译:悬臂施工公路桥梁钢梁与混凝土柱连接的性能及设计

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摘要

Designing rigid and durable steel girder-to-concrete column connection is important for a new type of highway bridge constructed using a cantilever-erection method. To develop a full strength of the hybrid connection, the perforated steel plate is applied as a bonding means for the steel-concrete interface. A nonlinear finite element program has been developed to investigate the inelastic response of the steel-concrete hybrid structure. The model considers the essential nonlinearities arising in the materials: 1) nonlinear behavior of concrete under multiaxial stress states; 2) tensile cracking of concrete; and 3) elasto-plastic behavior of steel plates and reinforcing steel bars. Special attention has been paid to the two-dimensional nonlinear effect of perforated steel plates at the steel-concrete interface. Effectiveness of the analysis method is demonstrated through comparison of measured and numerical results on a highway bridge which has been constructed recently in Japan. It is followed by the analytical confirmation of the ultimate strength and deformation characteristics for a prototype connection region.
机译:设计坚固耐用的钢梁到混凝土柱的连接对于使用悬臂竖立方法建造的新型公路桥梁非常重要。为了充分发挥混合连接的强度,将多孔钢板用作钢-混凝土界面的粘结工具。已经开发了非线性有限元程序来研究钢-混凝土混合结构的非弹性响应。该模型考虑了材料中产生的基本非线性:1)多轴应力状态下混凝土的非线性行为; 2)混凝土的拉伸开裂; 3)钢板和钢筋的弹塑性行为。特别注意了多孔钢板在钢-混凝土界面处的二维非线性效应。通过在日本最近建造的公路桥梁上对测量结果和数值结果进行比较,证明了该分析方法的有效性。随后是对原型连接区域的极限强度和变形特性的分析确认。

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