大翼缘箱梁畸变效应的试验研究  

Experimental Investigation on Distortion Effect of Widely-Flanged Box Girders

作　　者：张文献[1] 庞姝[2] 黄金芬[1] 张唯春[3] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]沈阳市市政工程质量检测(中心)有限公司,辽宁沈阳110005 [3]辽宁省交通高等专科学校,辽宁沈阳110122

出　　处：《东北大学学报（自然科学版）》2009年第7期1047-1050,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50778035);黑龙江省交通厅科研项目(311098)

摘　　要：采用有机玻璃材料制成箱梁模型,通过其试验结果与MIDAS/Civil有限元分析结果的对比耦合,论述了大翼缘箱梁的畸变效应.分析畸变效应时采用了弹性地基梁法的求解思路,在求出截面畸变角后,计算畸变应力.由试验以及计算结果可知,畸变效应对大翼缘箱梁截面应力的影响尤为显著,因此,在大翼缘箱梁的设计计算中要重视畸变效应的影响.最后给出了大翼缘箱梁角点框架横向弯矩的计算公式.Widely-flanged box girders have been widely using in recent years, and it is not allowed to ignore the substress on the girder section caused by distortion effect. An organic glass model was therefore made to investigate the box girder＇s distortion effect experimentally, and the results were compared in coupling with the FEA results by using the software MIDAS/Civil. With the way to solve the distortion effect problem by the flexible foundation method, the distortion stress was calculated after solving the cross-section distortion angle. The experimental and calculated results both showed that the distortion effect on the widely-flanged box girder section is particularly notable. It follows that it is necessary to make much of the distortion effect in the design of widely-flanged box girders. Finally, a formula is given to calculate the horizontal moment around box frame comer.

关 键 词：大翼缘箱梁 畸变效应 畸变角 有机玻璃模型 有限元分析 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]