Bridge Girders with Corrugated Webs

波纹腹板桥梁

• 批准号: 9634570
• 负责人: Mohamed Elgaaly
• 金额: $ 10.99万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9634570&HistoricalAwards=false
• 关键词: Bridge; Girders; Corrugated; Webs

9634570 Elgaaly Economical design of girders normally requires thin webs. The use of corrugated webs is a possible way of achieving adequate out-of-plane stiffness without recourse to using stiffeners. A report by the Principal Investigator summarizing the results from a research project, to investigate the behavior of beams with corrugated webs under static loading has been completed. This project will investigate the behavior of girders with corrugated webs under repeated loading. Preliminary results from very limited tests indicate that the fatigue strength for the girders with corrugated webs can be higher than for conventionally stiffened girders. This project will determine the behavior of bridge girders with corrugated webs under repeated loading and establish the fatigue strength for such girders. The optimum shape of the corrugation under static loading may not be the optimum shape under repeated loading. ***

梁的经济设计通常要求薄腹板。波纹腹板的使用是一种可能的方法，以获得足够的面外刚度，而无需求助于使用加强筋。一份报告由首席研究员总结了研究项目的结果，调查波纹腹板梁在静载荷下的行为已经完成。本项目将研究波纹腹板梁在反复荷载作用下的性能。有限试验的初步结果表明，波纹腹板梁的疲劳强度可能高于常规加劲梁。本项目将确定波纹腹板桥梁梁在反复荷载作用下的性能，并建立波纹腹板桥梁梁的疲劳强度。静荷载作用下波纹的最佳形状不一定是重复荷载作用下波纹的最佳形状。＊＊＊