桥梁加固薄弱构件斜截面抗剪强度研究  

Study on Shear Strength of Strengthened Weak Member in Bridge

作　　者：张颂娟 王彤 刘和[1] 

机构地区：[1]沈阳市公路规划设计院

出　　处：《辽宁省交通高等专科学校学报》2000年第2期11-14,52,共5页Journal of Liaoning Provincial College of Communications

摘　　要：本文采用在一期荷载作用下,粘贴斜钢板进行斜截面的加固补强试验,来模拟实际旧桥加固中的受力情况,对两阶段受力迭合构件的斜截面抗剪强度进行了研究。结果表明:分阶段受力对弯起钢筋的最终抗剪能力影响不大,对箍筋的最终抗剪能力略有提高,对混凝土的最终抗剪能力影响与加固前裂缝开展情况有关。The paper studied on shear strength of two stage load -bearing strengthened member by experiment which simulated the force state of actual strengthened old bridge, making use of inclined steel plates to strengthen inclined sections under first stage load. We obtain a series of conclusions;first, two stage load - bearing has little affection on ultimate shear strength of bend bar. Secondly, it has a little increase on ultimate shear strength of web reinforcement. Thirdly, the ultimate shear strength of concrete affected by two stage loading has something to do with cracking in unstrengthened member.

关 键 词：迭合构件 抗剪强度 桥梁 加固补强 斜截面 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]