不锈钢筋混凝土梁受弯性能试验研究  

Experimental Study on the Flexural Performance of Stainless Steel Reinforced Concrete Beams

作　　者：赵晶 李海云 刘志坚 管忠正 王为鑫 ZHAO Jing;LI Haiyun;LIU Zhijian;GUAN Zhongzheng;WANG Weixin(Guangzhou Metro Design&Research Institute Co.,Ltd.,Guangzhou 510000,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;China Railway 14th Bureau Group Corporation Limited,Ji’nan 250101,China)

机构地区：[1]广州地铁设计研究院股份有限公司,广东广州510000 [2]石家庄铁道大学土木工程学院,河北石家庄050043 [3]中铁十四局集团有限公司,山东济南250101

出　　处：《粉煤灰综合利用》2024年第5期81-86,107,共7页Fly Ash Comprehensive Utilization

基　　金：国家自然科学基金项目(52308272)。

摘　　要：对不锈钢筋混凝土(HSS-RC)梁、不锈钢筋超高性能混凝土(HSS-UHPC)梁进行抗弯性能试验研究,得到不锈钢筋超高性能混凝土(HSS-UHPC)梁的受弯性能。结果表明:不锈钢筋与UHPC共同工作时,承载能力、抗裂性能均显著提高;配筋率和截面积与试件承载能力呈正相关,与裂缝宽度呈负相关;平截面假定仍适用于HSS-PC梁与HSS-UHPC梁;GB 5010—2010《混凝土结构设计规范》中普通钢筋混凝土受弯承载力公式及裂缝宽度计算公式仍适用于HSS-RC梁;考虑受拉区UHPC的抗拉性能,提出了适用于HSS-UHPC梁的受弯承载力公式和裂缝宽度计算公式。为不锈钢筋混凝土梁的设计及工程应用提供试验依据与理论基础。Conducting bending performance tests on stainless steel reinforced concrete(HSS-RC)beams and stainless steel reinforced Ultra-High Performance Concrete(HSS-UHPC)beams has yielded the flexural behavior of HSS-UHPC beams.The results demonstrate that when stainless steel bars are used in conjunction with UHPC,there is a significant enhancement in both load-bearing capacity and crack resistance.The reinforcement ratio and cross-sectional area are positively correlated with the specimen’s load-bearing capacity,while they are negatively correlated with crack width.The assumption of a flat cross-section remains valid for both HSS-RC and HSS-UHPC beams.The formulas for calculating the bending capacity and crack width of ordinary reinforced concrete in the"Code for Design of Concrete Structures"GB 5010-2010 are still applicable to HSS-RC beams.By considering the tensile properties of UHPC in the tensile zone,formulas for calculating the bending capacity and crack width of HSS-UHPC beams have been proposed.This study provides an experimental basis and theoretical foundation for the design and engineering application of stainless steel reinforced concrete beams.

关 键 词：不锈钢筋 超高性能混凝土 配筋率 受弯承载力 裂缝宽度 

分 类 号：TU37[建筑科学—结构工程]