摘要
为研究钢纤维混凝土＋沥青的新型铺装结构下正交异性钢桥面板局部变形的影响面分布规律,运用单位荷载法对某桥行车道中部、横隔板和纵隔板三处加劲肋的肋间相对位移进行了仿真分析。结果表明：钢纤维混凝土＋沥青的新型铺装结构下,正交异性钢桥面板肋间相对变形的影响面分布具有明显的局部效应,其影响面的横向分布范围约为2~4个加劲肋间距,影响面的纵向分布范围约为1个横隔板间距。行车道中部远离横隔板处的肋间相对变形远大于横隔板和纵隔板附近的肋间相对变形。复合铺装梁段模型试验的肋间相对变形影响线分布规律与仿真结果吻合,验证了仿真分析方法和结果的有效性。
In order to study the local deformation of orthotropic steel bridge deck under the new pavement of steel fiber reinforced concrete and asphalt concrete, simulation analyses are carried out using unit load method. The local relative displacements on the middle of the traffic lane, the diaphragms and webs are obtained. The results show that, for the new pavement of steel fiber reinforced concrete and asphalt concrete, the distribution of displacement influence surface of orthotropic steel bridge deck reeals obvious local effect. The transverse displacement influence surfaces rang from two to four times the distance between webs, and the range of longitudinal displacement influence surfaces is about one times the distance between diaphragms. The local relative displacements at the mid- die lane away from diaphragm are much larger than those nearby the diaphragms and the webs. The test results accord with the results of simulation, which verify the validity of the simulation analysis method and the results.
出处
《科学技术与工程》
北大核心
2016年第23期93-97,共5页
Science Technology and Engineering
基金
冶金工业过程系统科学湖北省重点实验室(武汉科技大学)开放基金资助(Y201522)资助
关键词
新型铺装结构
正交异性板钢箱梁
肋间相对挠度
影响面
new pavement orthotropic steel box girder intercostal displacement influence surface
