钢筋混凝土“T”梁混合预应力加固理论  

Mixed prestressed reinforcement theory research on reinforced concrete “T” beam

作　　者：戴成元[1] 刘露[1] 李广华[2] 赵健梅[1] 

机构地区：[1]辽宁工程技术大学土木与交通学院,辽宁阜新123000 [2]北京城建七建设工程有限公司,北京100029

出　　处：《辽宁工程技术大学学报（自然科学版）》2015年第1期43-47,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：百千万人才基金资助项目(2011921064);辽宁省教育厅科研基金资助项目(L2013144)

摘　　要：为达到普通混凝土代替高性能砂浆进而降低工程造价并方便取材的目的,基于现行P-SWR加固技术,提出混合预应力加固抗弯构件理论.以英德市大湾镇连江大桥加固为工程背景,采用先张法和后张法共同作用的方法,利用Midas有限元软件,模拟钢筋混凝土"T"梁的不同受力工况,分析各阶段应力分布规律.结果表明:有限元模拟结果与理论计算结果相吻合,验证混合预应力加固理论对钢筋混凝土"T"梁承载力有一定的提高.In order to replace the high performance cement mortar by the ordinary and then reduce the project cost and create convenience for getting the material, this paper put forward the mixed prestressed reinforcement theory based on the existing P-SWR reinforcement technique. Taking the reinforcement of Lian Jiang bridge in Yinede city, Dawan as engineering background, and utilized the method of pre and after tensioning applied to be reinforcement structures at the same time, diverse stress condition of reinforced concrete T beam are simulated and stress distribution law of various stress stage is analysed using the finite element analysis software Midas. The finite element modeling results are in line with the theoretical calculation results and proving the mixed prestressed reinforcement theory of reinforced concrete T beam bearing capacity increase to a certain extent.

关 键 词：钢筋混凝土 “T”梁 混合预应力加固 有限元分析 应力 

分 类 号：U442[建筑科学—桥梁与隧道工程]