{"title":"考虑钢-粘结滑移的钢筋混凝土构件轴-剪-弯相互作用特性及完整抗剪强度模型","authors":"J. H. Wang, Y. P. Sun","doi":"10.1007/s10518-025-02115-y","DOIUrl":null,"url":null,"abstract":"<div><p>To study the axial-shear-flexure-interactive (ASFI) and shear strength behavior of reinforced concrete (RC) members with low-bond reinforcement, 20 high-strength fly ash concrete beams with low-bond high-strength SBPDN 1275/1420 rebars were fabricated for testing. The experimental results indicated that the degradation in the shear strength carried by the concrete (<i>V</i><sub><i>c</i></sub>) controlled the overall shear strength behavior of the test beams. The <i>V</i><sub><i>c</i></sub> of the test beams with shear span ratios greater than 1.5 eventually reduced to zero owing to the development of shear cracks. A calculation method for predicting the ASFI behavior of RC members was proposed to predict the lateral behavior without numerous mathematical iterations, which accounted for deformations due to flexure, steel-bond slip, and shear. An analytical model was derived to calculate the nominal shear strength using the shear friction mechanism and the Mohr–Coulomb failure criterion. Compared to the models currently proposed in design provisions, this model exhibited better alignment with the experimental results. A new model describing the degradation of shear strength due to shear cracks was also proposed, which incorporated the effect of the longitudinal rebar bond strength on the drift at which the nominal shear strength begins to deteriorate. Comparisons between the predicted and experimental results of RC members with different structural variables indicated that the ASFI calculation program and shear strength model accurately predicted the lateral behavior, shear failure, and post-failure behavior.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 5","pages":"2047 - 2081"},"PeriodicalIF":3.8000,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Axial-shear-flexure interactive behavior and completed shear strength model of reinforced concrete members considering steel-bond slip\",\"authors\":\"J. H. Wang, Y. P. Sun\",\"doi\":\"10.1007/s10518-025-02115-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>To study the axial-shear-flexure-interactive (ASFI) and shear strength behavior of reinforced concrete (RC) members with low-bond reinforcement, 20 high-strength fly ash concrete beams with low-bond high-strength SBPDN 1275/1420 rebars were fabricated for testing. The experimental results indicated that the degradation in the shear strength carried by the concrete (<i>V</i><sub><i>c</i></sub>) controlled the overall shear strength behavior of the test beams. The <i>V</i><sub><i>c</i></sub> of the test beams with shear span ratios greater than 1.5 eventually reduced to zero owing to the development of shear cracks. A calculation method for predicting the ASFI behavior of RC members was proposed to predict the lateral behavior without numerous mathematical iterations, which accounted for deformations due to flexure, steel-bond slip, and shear. An analytical model was derived to calculate the nominal shear strength using the shear friction mechanism and the Mohr–Coulomb failure criterion. Compared to the models currently proposed in design provisions, this model exhibited better alignment with the experimental results. A new model describing the degradation of shear strength due to shear cracks was also proposed, which incorporated the effect of the longitudinal rebar bond strength on the drift at which the nominal shear strength begins to deteriorate. Comparisons between the predicted and experimental results of RC members with different structural variables indicated that the ASFI calculation program and shear strength model accurately predicted the lateral behavior, shear failure, and post-failure behavior.</p></div>\",\"PeriodicalId\":9364,\"journal\":{\"name\":\"Bulletin of Earthquake Engineering\",\"volume\":\"23 5\",\"pages\":\"2047 - 2081\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2025-02-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Earthquake Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10518-025-02115-y\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, GEOLOGICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Earthquake Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10518-025-02115-y","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
Axial-shear-flexure interactive behavior and completed shear strength model of reinforced concrete members considering steel-bond slip
To study the axial-shear-flexure-interactive (ASFI) and shear strength behavior of reinforced concrete (RC) members with low-bond reinforcement, 20 high-strength fly ash concrete beams with low-bond high-strength SBPDN 1275/1420 rebars were fabricated for testing. The experimental results indicated that the degradation in the shear strength carried by the concrete (Vc) controlled the overall shear strength behavior of the test beams. The Vc of the test beams with shear span ratios greater than 1.5 eventually reduced to zero owing to the development of shear cracks. A calculation method for predicting the ASFI behavior of RC members was proposed to predict the lateral behavior without numerous mathematical iterations, which accounted for deformations due to flexure, steel-bond slip, and shear. An analytical model was derived to calculate the nominal shear strength using the shear friction mechanism and the Mohr–Coulomb failure criterion. Compared to the models currently proposed in design provisions, this model exhibited better alignment with the experimental results. A new model describing the degradation of shear strength due to shear cracks was also proposed, which incorporated the effect of the longitudinal rebar bond strength on the drift at which the nominal shear strength begins to deteriorate. Comparisons between the predicted and experimental results of RC members with different structural variables indicated that the ASFI calculation program and shear strength model accurately predicted the lateral behavior, shear failure, and post-failure behavior.
期刊介绍：
Bulletin of Earthquake Engineering presents original, peer-reviewed papers on research related to the broad spectrum of earthquake engineering. The journal offers a forum for presentation and discussion of such matters as European damaging earthquakes, new developments in earthquake regulations, and national policies applied after major seismic events, including strengthening of existing buildings.
Coverage includes seismic hazard studies and methods for mitigation of risk; earthquake source mechanism and strong motion characterization and their use for engineering applications; geological and geotechnical site conditions under earthquake excitations; cyclic behavior of soils; analysis and design of earth structures and foundations under seismic conditions; zonation and microzonation methodologies; earthquake scenarios and vulnerability assessments; earthquake codes and improvements, and much more.
This is the Official Publication of the European Association for Earthquake Engineering.
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