不锈钢筋混凝土梁受弯性能试验研究

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ZHAO Jing'，LI Haiyun2，LIU Zhijian3，GUAN Zhongzheng2，WANG Weixin3 （1.Guangzhou Metro Design & Research Institute Co.，Ltd.，Guangzhou 510OOO， China；

2. School of Civil Engineering， Shijiazhuang Tiedao University， Shijiazhuang O5o043，China；

3. China Railway 14th Bureau Group Corporation Limited， Ji'nan ， China）

Abstract：Conductingbending performance testsonstainlessstelreinforcedconcrete（HSS-RC）beamsand stainlessteel reinforced Ultra-High Performance Concrete（HSS-UHPC）beams has yieldedtheflexural behaviorof HSS-UHPC beams. Theresultsdemonstrate thatwhen stainlesstelbarsareusedinconjunction with UHPC，there isasignificant enhancement in bothload-bearingcapacityandcrackresistance.Thereiforcementratioandcross-sectionalarea arepositivelycorrelated with thespecimen’sload-bearingcapacity，whiletheyare negativelycorelatedwithcrack width.Theassumptionofaflatcross sectionremains valid forboth HSS-RCand HSS-UHPC beams.The formulas forcalculatingthe bending capacityand crack widthof rdinaryreinforcedconcreteinthe"Codefor DesignofConcrete Structures"GB5Ol0-2O10arestillapplicabletoHRC beams.Byconsidering the tensile properties of UHPC inthe tensile zone，formulas forcalculating the bendingcapacityand crack width of HSS-UHPC beamshave ben proposed.This studyprovidesanexperimental basisandtheoretical foundationforthe design and engineering application of stainless steel reinforced concrete beams.

sywords：stainless stelreinforcingbars；ultra-highperformanceconcrete；reinforcementratio；bendingcapacity；crackwidth

0 引言

钢筋混凝土结构综合了钢筋和混凝土的优点，造价低，取材方便，是土木工程结构中最常用的形式之一。（剩余6278字）