钢-混凝土开孔钢板-FRP筋连接结合部横向抗弯性能研究  

Study on Transverse Bending Behavior of Steel-Concrete Perforated Steel Plate FRP Reinforcement Joint

作　　者：张晓亮 唐军 王曦宇 ZHANG Xiaoliang;TANG Jun;WANG Xiyu(China Railway Construction Yunnan Investment Co.Ltd.,Kunming Yunnan 650000,China;China Railway Construction Kunlun Investment Group Co.Ltd.,Chengdu Sichuan 610040,China)

机构地区：[1]中铁建云南投资有限公司,云南昆明650000 [2]中国铁建昆仑投资集团有限公司,四川成都610040

出　　处：《铁道建筑技术》2022年第3期12-16,共5页Railway Construction Technology

基　　金：云南省交通运输厅科技项目(云交科教[2019]58号)。

摘　　要：为研究开孔钢板-FRP筋复合连接的波形钢腹板与混凝土顶板结合部在横向角隅弯矩下的破坏特征和力学性能,设计了3个横向抗弯试件,以不同的贯穿筋为研究变量,进行了横向抗弯静力试验,试验中贯穿筋分别采用相同直径的BFRP筋、GFRP筋与普通HRB400钢筋,试验结果表明:不同贯穿筋的横向抗弯构件破坏特征不同,贯穿筋为普通钢筋的构件属于延性破坏,而贯穿筋为FRP筋的构件则表现为明显的脆性破坏特征;相比于贯穿筋为普通钢筋的试件,贯穿筋采用BFRP筋和GFRP筋的试件横向抗弯承载力及其延性均有所下降;贯穿筋为GFRP筋的试件与贯穿筋为BFRP筋的构件相比承载力有所降低,但其延性有所提高。In order to study the failure characteristics and mechanical properties of the joint of corrugated steel web and concrete roof connected by perforated steel plate FRP reinforcement under transverse corner bending moment,three transverse bending specimens were designed.Taking different through bars as research variables,transverse bending static tests were carried out.In the test,BFRP bars,GFRP bars and ordinary HRB400 bars with the same diameter were used as through bars.The test results show that the failure characteristics of transverse flexural members with different through bars are different.The members with ordinary through bars belong to ductile failure,while the members with FRP through bars show obvious brittle failure characteristics;compared with the specimens with ordinary reinforcement,the transverse flexural capacity and ductility of the specimens with BFRP reinforcement and GFRP reinforcement are reduced;the bearing capacity of the specimen with GFRP reinforcement is lower than that of the member with BFRP reinforcement,but its ductility is improved.

关 键 词：波形钢腹板 开孔钢板连接件 FRP筋 结合部 横向抗弯 

分 类 号：U441[建筑科学—桥梁与隧道工程]