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不銹鋼筋混凝土梁受彎性能試驗研究 *

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

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趙晶¹ , 李海云² , 劉志堅³ , 管忠正², 王為鑫³

( 1 . 廣州地鐵設計研究院股份有限公司，廣東廣州 510000 ; 2. 石家莊鐵道大學土木工程學院，

河北石家莊 050043 ; 3 . 中鐵十四局集團有限公司，山東濟南 250101)

摘要：對不銹鋼筋混凝土(HSS- RC)梁\不銹鋼筋超高性能混凝土 (HSS- UHPC)梁進行抗彎性能試驗研究，得到不銹鋼筋超高性能混凝土(HSS- UHPC)梁的受彎性能。結果表明：不銹鋼筋與 UHPC 共同工作時，承載能力、抗裂性能均顯著提高；配筋率和截面積與試件承載能力呈正相關，與裂縫寬度呈負相關；平截面假定仍適用于 HSS- PC 梁與 HSS- UHPC 梁；GB 5010—2010《混凝土結構設計規(guī)范》中普通鋼筋混凝土受彎承載力公式及裂縫寬度計算公式仍適用于 HSS- RC梁；考慮受拉區(qū) UHPC的抗拉性能，提出了適用于 HSS-UHPC 梁的受彎承載力公式和裂縫寬度計算公式。為不銹鋼筋混凝土梁的設計及工程應用提供試驗依據(jù)與理論基礎。

關鍵詞：不銹鋼筋；超高性能混凝土；配筋率；受彎承載力；裂縫寬度

中圖分類號：TU37

文獻標志碼：A

文章編號： 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

*基金項目：國家自然科學基金項目 (52308272) 。

作者簡介：趙晶 (1985—) , 男，碩士，高級工程師，研究方向：不銹鋼筋混凝土力學性能研究。

通信作者：劉志堅 (1986—) , 男，本科，高級工程師，研究方向：地下工程建設與管理。

收稿日期：2024- 05- 07