桥梁荷载等级与T梁主要材料用量分析  

Bridge Load Level and Consumption of T-Beam Prime Materials

作　　者：邹筑煜[1] 王丽萍 

机构地区：[1]重庆交通大学交通运输学院,重庆400074 [2]株洲市城市建设发展集团有限公司,湖南株洲412007

出　　处：《重庆交通大学学报（自然科学版）》2014年第5期42-46,55,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：交通运输部西部交通建设科技项目(2008 318 494 04)

摘　　要：在保持桥梁刚度不变的条件下,对构建的单片30 m跨径预应力混凝土简支T梁模型进行逐步提载,获取了相同安全储备下的材料增加量;采用一元回归与路径分析方法确定了车辆荷载等级提高幅度与单片T梁主要材料(混凝土、钢材)增加量之间的定量化关系。研究可作为相关部门治超与提载方案的决策依据。The increment of the consumption of prime materials of the monolithic 30m span of the prestressed concrete T-beam model in the same safety reserve was obtained by improving the vehicle load level under the condition of unaltered stiffness. With the help of monadie linear regression and path analysis method, the quantitative relation between the consumption of prime materi- als （concrete, steel） of monolithic T-beam and the range of improving the vehicle load level was determined. The conclusion can help relevant departments to make decision about the plan of managing overloading and improving load.

关 键 词：桥梁工程 车辆荷载 单片T梁 刚度不变 路径分析法 

分 类 号：F542[经济管理—产业经济]