期刊论文

中文

实验室研究与探索

1006-7167

2012

31

12

31-34

10.3969/j.issn.1006-7167.2012.12.009

湖南省普通高校教学改革研究项目(湘教通[2008]263号（178）；

本校为第一机构

为了研究中横隔梁对T形梁桥荷载横向分布的影响,制作了2个T形钢梁桥实验模型,每个模型由5片T梁肋组成,其中一个有中横隔梁,一个无中横隔梁。用Midas/civil有限元分析软件建立了T形梁桥实验模型,进行了理论计算与分析,并与实测值进行了比较。结果表明,有中横隔梁的T形梁桥模型的整体刚度相对较大,各单片梁肋间的传力较好,故各梁肋的荷载横向分布系数接近直线分布;无中横隔梁T形梁桥由于仅有桥面板传递剪切变形,在对称及偏心荷载作用下,集中荷载作用梁肋的应变与挠度均较大,荷载横向分布呈不均匀现象。

In order to study the influence of middle diaphragm beam on the load transverse distribution of T-shape beam bridges,two steel T-girder bridge models were developed,one of which has a middle diaphragm and the other has no diaphragm.Each model was made of five pieces of T-beam of rib.The theoretical data were calculated by Midas/civil finite element analysis software,and compared with the data of model experiment.The result shows that the middle diaphragm between the T-girder bridge has relatively large overall rigidity,and the force transmission between each girder is much better;However,as fa...