基于有限元的钢筋混凝土矩形板桥裂缝成因分析  

Crack Causes Analysis of Rectangular Slab Bridge Based on the Finite Element Method

作　　者：许鹏飞[1] 王振强 

机构地区：[1]交通运输部规划研究院,北京100029 [2]中交公路养护工程技术有限公司,北京100013

出　　处：《公路工程》2015年第6期229-233,共5页Highway Engineering

摘　　要：随着使用年代和交通量的增长,加上超载、超重汽车的行驶,导致早期建设的部分高速公路破坏严重,路况较差,我国高速公路已由大规模建设时期逐步转入到升级改造的时代。依据某高速公路全线桥梁检测数据,采用ANSYS对矩形板桥梁体裂缝成因进行建模、分析,得出横向钢筋配置不足是导致混凝土矩形板桥梁底纵向开裂的主要原因,并采用梁底粘贴钢板技术进行加固,效果良好。研究成果对今后同类桥梁的设计、检测、加固等有一定的参考价值。as the used age and the traffic volume are increased,additionally the overload and over- weight vehicles are running, which lead that some early constructed expressways have been destroyed Seri- ously and the road condition is much worse~ So the expressways have been transferring from constructional times to upgrading and regenerational times. Based on the inspection data of all bridges on one express- way,the rectangular slab bridge is modeled and its beam＇ s crack causes are analyzed by ANSYS. In a re- suit, the deficient transverse reinforcement is the main cause of the reinforced concrete rectangular slab bridge beam cracking lengthways. Applying the strengthening technology of bonding steel plate had gotten the good effect. The research results have some reference value on the similar bridges＇ design, examina- tion, strengthening and so on.

关 键 词：矩形板桥 有限元 裂缝成因 加固 

分 类 号：U445.71[建筑科学—桥梁与隧道工程]