PDF全文阅读

赵   晶¹  ,  李海云² ,  刘志坚³ ,  管忠正² ,  王为鑫³

 

( 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)

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。

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

中图分类号：TU37           

文献标志码：A            

文章编号： 1005- 8249   (2024)  05- 0081- 07 

       DOI:10. 19860/j.cnki.issn1005 - 8249.2024.05 .015

 

ZHAO Jing¹  ,  LI Haiyun² ,  LIU Zhijian³ ,  GUAN Zhongzheng² , WANG Weixin³

( 1 . Guangzhou Metro Design & Research Institute Co. ，Ltd. ，Guangzhou 510000 ,  China;   2. School of Civil Engineering ,  Shijiazhuang Tiedao University ,  Shijiazhuang 050043 ,  China;

3 . China Railway 14th Bureau Group Corporation Limited ,  Ji ’nan 250101 ,  China)

Abstract：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 crackw width of ordinary reinforced concrete in the “Code for Design of Concrete Structures” GB5010-2010 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 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.

Keywords：stainless steel reinforcing bars; ultra-high performance concrete; reinforcement ratio; bending capacity; crack width 

*基金项目： 国家自然科学基金项目  (52308272) 。

作者简介：赵   晶  (1985—) , 男，硕士，高级工程师，研究方向：不锈钢筋混凝土力学性能研究。 

通信作者：刘志坚  (1986—) , 男，本科，高级工程师，研究方向：地下工程建设与管理。

收稿日期：2024- 05- 07