钢筋混凝土桥梁抗弯性能分析及阻裂方法研究  

Analysis of Flexural Performance of Reinforced Concrete Bridges and Research on Crack Prevention Methods

作　　者：孙凯亮 SUN Kai-liang(CSCEC Road and Bridge Group Science and Technology Development Co.Ltd.,Shijiazhuang 050000,China)

机构地区：[1]中建路桥集团科技发展有限公司,石家庄050000

出　　处：《工程建设与设计》2024年第6期63-65,共3页Construction & Design for Engineering

摘　　要：针对钢筋混凝土桥梁负弯矩区钢梁受压、混凝土受拉等因素引发的开裂问题,讨论了板材黏结加固技术在不同材料、预载条件下的阻裂加固效果。通过有限元分析模拟了采用板材黏结加固技术后钢筋混凝土桥梁的抗弯性能。结果表明,在加固结构中,镀钢材料的性能表现最好。同时,在抗裂性、加固材料可利用率和钢筋与加固材料应变等指标中,卸荷加固梁的性能同样优于不卸荷加固梁。In view of the cracking problems caused by steel beam compression and concrete tension in the negative moment zone of reinforced concrete bridge,the effect of plate bonding technology on cracking resistance and reinforcement under different materials and preload conditions is discussed.The flexural performance of reinforced concrete bridges with slab bonding was simulated by finite element analysis.The results show that the performance of steel plated material is the best in the reinforced structure.Meanwhile,the performance of unloaded reinforced beam is also better than that of ununloaded reinforced beam in crack resistance,availability of reinforcement material and strainofreinforcementmaterial.

关 键 词：钢筋混凝土 桥梁 板材黏结 加固材料 预载条件 

分 类 号：U441[建筑科学—桥梁与隧道工程]