| 基于缝宽-滑移理论的铝合金配筋混凝土梁粘结性能研究 |
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| 引用本文： | 于晓光,胡兆同,邢国华,谢鹏宇,穆卓辉.基于缝宽-滑移理论的铝合金配筋混凝土梁粘结性能研究[J].世界地震工程,2019,35(3):083-90. |
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| 作者姓名： | 于晓光 胡兆同 邢国华 谢鹏宇 穆卓辉 |
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| 作者单位： | 1. 长安大学 公路学院, 陕西 西安 710064;2. 长安大学 旧桥检测与加固技术交通行业重点实验室, 陕西 西安 710064;3. 内蒙古自治区交通建设工程质量监督局, 内蒙古 呼和浩特 010051 |
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| 摘 要： | 铝合金筋与混凝土的粘结性能是影响铝合金配筋新型混凝土梁承载力的重要因素。对9根铝合金配筋混凝土梁和2根钢筋混凝土对比梁进行了静载试验，分析混凝土梁在加载过程中的裂缝发展情况，基于缝宽-滑移理论研究试验梁的粘结性能。研究结果表明:同级荷载作用下，钢筋混凝土梁的裂缝宽度小于铝合金配筋混凝土梁，钢筋与混凝土的粘结性能优于铝合金与混凝土的粘结性能；混凝土梁中纵筋所受拉力，实质上是混凝土开裂后，单元体内部粘结力的合力；纵筋与混凝土的粘结滑移量与粘结力直接相关，可通过代数和微积分计算得到二者的对应关系。
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| 关 键 词： | 配筋率 铝合金筋 裂缝宽度 粘结性能 |
Study onbond performance of aluminum alloy reinforced concrete beams based on crack width-slip theory |
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| YU Xiaoguang,,' target="_blank" rel="external">,HU Zhaotong,XING Guohua,XIE Pengyu,MU Zhuohui.Study onbond performance of aluminum alloy reinforced concrete beams based on crack width-slip theory[J].World Information On Earthquake Engineering,2019,35(3):083-90. |
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| Authors: | YU Xiaoguang " target="_blank">' target="_blank" rel="external"> HU Zhaotong XING Guohua XIE Pengyu MU Zhuohui |
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| Affiliation: | 1. School of Highway, Chang’an University, Xi’an 710064, China;2. Key Laboratory of Bridge Detection & Reinforcement Technology of Ministry of Transport, Chang’an University, Xi’an 710064, China;3. Inner Mongolia Communications Construction Engineering Quality Supervision Bureau, Hohhot 010051, China |
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| Abstract: | The bond performance of aluminum alloy bars and concrete is an important factor influencing the bearing capacity of concrete beams reinforced with aluminum alloy bars. A static load test was conducted on nine concrete beams reinforced with aluminum alloy bars and two reinforced concrete beams. The development of the cracks in the beams during the loading process was analyzed. Based on the crack width-slip theory, the bonding performance of the tested beams was investigated. The results show that the crack width of the reinforced concrete beams under the same load is smaller than that of concrete beams reinforced with aluminum alloy bars, and the bonding performance between steel bar and concrete is better than that between the aluminum alloy bar and concrete. The tension of the longitudinal reinforcement in the concrete beam is essentially the resultant force of the bond forces in the unit body after the cracking of the concrete beam. The bond slip between the longitudinal bars and concrete is directly related to the bond force, and the relationship between the amount of bond slip and the bond force can be obtained by the algebraic and integral calculations. |
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| Keywords: | reinforcement ratio aluminum alloy bar crack width bond performance |
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