装配式T形梁桥预防性养护方法  

Preventive Maintenance Method of Fabricated T-beam Bridge

作　　者：张文韬 王正宇 邬晓光[1] 刘嘉欣 ZHANG Wentao;WANG Zhengyu;WU Xiaoguang;LIU Jiaxin(School of Highway,Chang’an University,Xi’an,Shanxi 710018,China;Highway Construction and Maintenance Center of Luohe City,Luohe,Henan,462000,China)

机构地区：[1]长安大学公路学院,西安710064 [2]漯河市公路建设和养护中心,河南漯河462000

出　　处：《湖南城市学院学报（自然科学版）》2020年第6期16-20,共5页Journal of Hunan City University:Natural Science

摘　　要：装配式T形梁桥在实际工程的养护工作中主要偏向于纠正性养护而缺乏预防性养护,在施工和养护作业中往往重视T形梁的纵向受力而轻视横向受力﹒本文依托河南某公路沿线T形梁桥,建立Midas FEA有限元模型,采用加权位移法模拟装配式T形梁桥承受不同程度的损伤,分析计算不同损伤程度下3种主流加固方法的横向刚度以及横向分布系数变化﹒研究结果表明,常规加固手段对T形梁桥横向刚度的提升有限,预防性养护应当尽早及时进行.In the actual engineering maintenance work,the prefabricated T-beam bridge is mainly inclined to corrective maintenance rather than preventive maintenance.In the construction and maintenance operations,the longitudinal stress of the T-beam is often emphasized and the lateral stress is ignored.In this paper,the Midas FEA finite element model is established on the basis of a T-beam bridge along a highway in Henan.The weighted displacement method is used to simulate the assembly of the T-beam bridge to withstand different degrees of damage.The changes of lateral stiffness and lateral distribution coefficient of three mainstream strengthening methods under different damage degrees are analyzed and calculated.The results show that the improvement of lateral stiffness of T-shaped beam bridge by conventional reinforcement methods is limited,and preventive maintenance should be carried out as soon as possible.

关 键 词：桥梁工程 装配式T形梁 横隔梁 横向刚度 预防性养护 

分 类 号：TU755.7[建筑科学—建筑技术科学]