CAJ | 학술논문

为了研究玄武岩纤维混凝土（BFRC）与钢筋粘结锚固性能，对18个中心拔出试件和9个梁式试件进行加载试验，获得各级荷载下加载端、自由端滑移量及钢筋应变，得到了粘结应力‐滑移曲线和粘结应力沿锚固长度的曲线分布。试验结果表明：随着玄武岩纤维的掺入，钢筋与混凝土粘结锚固性能未表现出有利影响，极限粘结强度有所降低；掺入长度为25 m m纤维的混凝土与钢筋的极限粘结强度优于掺入长度为15 m m纤维的混凝土与钢筋的极限粘结强度；混凝土强度的提高有利于改善玄武岩纤维混凝土与钢筋粘结锚固性能，混凝土相对保护层厚度对粘结锚固性能影响不大；锚固钢筋的应变曲线整体呈下凹形，沿锚固长度逐渐递减；粘结应力沿锚固长度呈多峰曲线；基于试验数据建立的玄武岩纤维混凝土与钢筋粘结应力‐滑移本构关系可以为玄武岩纤维混凝土的理论与工程设计提供参考依据。
위료연구현무암섬유혼응토（BFRC）여강근점결묘고성능，대18개중심발출시건화9개량식시건진행가재시험，획득각급하재하가재단、자유단활이량급강근응변，득도료점결응력‐활이곡선화점결응력연묘고장도적곡선분포。시험결과표명：수착현무암섬유적참입，강근여혼응토점결묘고성능미표현출유리영향，겁한점결강도유소강저；참입장도위25 m m섬유적혼응토여강근적겁한점결강도우우참입장도위15 m m섬유적혼응토여강근적겁한점결강도；혼응토강도적제고유리우개선현무암섬유혼응토여강근점결묘고성능，혼응토상대보호층후도대점결묘고성능영향불대；묘고강근적응변곡선정체정하요형，연묘고장도축점체감；점결응력연묘고장도정다봉곡선；기우시험수거건립적현무암섬유혼응토여강근점결응력‐활이본구관계가이위현무암섬유혼응토적이론여공정설계제공삼고의거。
In order to study the bond‐anchorage properties between basalt fiber reinforced concrete (BFRC) and steel bars ,the loading end ,the free end slip and strain of steel bars under various loads were acquired .Bond stress‐slip curves and bond stress curves along anchorage length were obtained through 18 center pull‐out specimens and 9 beam specimens'loading experiment .The experiment results show that basalt fiber has an adverse impact on the bond‐anchorage properties between steel bars and concrete and reduces the ultimate bond strength .25 mm basalt fiber shows greater ultimate bond strength between concrete and steel bars than 15 mm basalt fiber . The bond‐anchorage properties between BFRC and steel bars will be improved with the increase of the concrete strength .Relative thickness of concrete cover has little effect on bond‐anchorage properties .Strain curves of anchor steel bars are concave as a whole and decrease gradually along anchorage length . The bond stress curves along anchorage length are multimodal . The constitutive relation of bond stress and slip between BFRC and steel bars on the basis of experiment data can provide reference for the theory and engineering design of BFRC .