摘要
沪渝高速公路某人行天桥因自重导致跨中下挠,跨中区域裂缝超限,梁体承载力下降,通过采用预应力钢丝绳网片+聚合物砂浆加固技术进行维修,有效降低了混凝土梁体跨中下挠,提高了梁体刚度及承载能力,加固效果明显。
The passenger foot-bridge on the Shanghai-Chongqing expressway caused mid-span sag due to self-weight,the crack in the mid span area was exceeded,and the bearing capacity of the girder body was reduced.The reinforcement technology for maintenance was carried out through the use of prestressed steel wire rope mesh and polymer mortar reinforcement technology,which reduced the concrete beam mid-span sag effectively,also the stiffness and bearing capacity of the beam body were improved,and the reinforcement effect was obvious.
作者
向远辉
袁新顺
XIANG Yuan-hui;YUAN Xin-shun(EXi Highway Management Office of Hubei Provincial Transportation Department,Wuhan 430056,China;CCCC Wuhan Harbor Engineering Design & Research Institute Co Ltd,Wuhan 430040,China;Hubei KeyLaboratory of Advanced Materials & Reinforcement Technology Research for Marine Environment Structures,Wuhan 430040,China)
出处
《建材世界》
2018年第6期33-35,共3页
The World of Building Materials
关键词
预应力
钢丝绳
聚合物砂浆
加固
prestressed
steel wire rope
polymer mortar
reinforcement
