预应力加固桥梁微弯板的有限元模拟分析  

The Finite Element Analysis on Prestressed Reinforcing Slightly Curved Board

作　　者：李应钦 李大庆[2] 

机构地区：[1]广州市建筑科学研究院新技术开发中心有限公司,广州510440 [2]武汉大学土木建筑工程学院,武汉430072

出　　处：《广州建筑》2011年第2期27-32,共6页GUANGZHOU ARCHITECTURE

摘　　要：目前对微弯板的研究包括实验研究和有限元分析研究,两者均是从微弯板自身的承载力进行研究,而没有考虑桥面铺装对车辆荷载的横向传递作用及对其承载力的影响。微弯板的加固方法通常有替换,加厚,粘贴钢板、碳纤维布等方法,这些方法都能起到一定的加固作用,但都有其局限性,不能从根本上解决桥面结构的开裂,甚至破坏问题,对提高桥面结构整体性也无帮助。本文结合微弯板与桥面铺装的整体受力特性提出应用预应力加固微弯板的方法,采用理论分析与有限元模拟分析对这种方法的可行性进行论证。Presently, there are two types of methods to investigate the slabs： experimental studies and studies using finite element software. However, both of them concentrate the capacity of the slab itself, and neglect the affect of pavement on transferring the lateral load. The current ways of reinforcing the slightly curved slabs are replacing, thickening, gluing steel plate or carbon fiber reinforced plastics, and so on. All of these methods will strengthen the slabs to some degree, while undergoes some limitations, and unable to solve the cracking, or even the failure, of the deck. A strengthening method of utilizing prestressing is brought forward, theoretical analysis and the finite element simulation analysis carries on the proof to this method feasibility.

关 键 词：微弯板 加固 预应力 有限元 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]