| 玻璃纤维增强树脂复合材料管-钢筋/混凝土空心构件抗弯性能 |
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| 引用本文： | 张霓,郑晨阳,羡丽娜,王连广.玻璃纤维增强树脂复合材料管-钢筋/混凝土空心构件抗弯性能[J].复合材料学报,2020,37(12):3052-3063. |
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| 作者姓名： | 张霓 郑晨阳 羡丽娜 王连广 |
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| 作者单位： | 1.辽宁工程技术大学 土木工程学院，阜新 123000 |
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| 基金项目： | 辽宁省自然科学基金(201705403030)；辽宁省教育厅基础项目(LJ2019JL018) |
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| 摘 要： | 为研究玻璃纤维增强树脂复合材料(GFRP)管-钢筋/混凝土空心构件的抗弯性能，编制了受弯构件的非线性分析程序，系统地分析了空心率、配筋率、GFRP管管壁厚度及混凝土强度等级等主要参数对其抗弯性能的影响，并通过试验对所编制的程序进行验证，最后建立适用于GFRP管-钢筋/混凝土空心构件的抗弯承载力计算公式。结果表明:利用编制的受弯构件非线性分析程序与建立的抗弯承载力公式，计算结果与试验结果均吻合较好，抗弯承载力随空心率的减小、配筋率的提高、GFRP管管壁厚度的增加及混凝土强度的增大而增加，空心率对构件抗弯承载力影响最大，其次是配筋率和GFRP管管壁厚度，最后是混凝土强度等级，空心部分半径比在0.25~0.5为宜，可以适当提高配筋率、GFRP管管壁厚度或混凝土强度等级来弥补该空心构件抗弯承载力，研究结论可为该结构在实际应用中提供参考依据。
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| 关 键 词： | 玻璃纤维增强树脂复合材料管-钢筋/混凝土 空心构件 抗弯性能 非线性分析程序 承载力公式 |
| 收稿时间： | 2020-03-02 |
Flexural behavior of glass fiber reinforced polymer tube filled with steel bars/concrete hollow members |
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| Affiliation: | 1.School of Civil Engineering, Liaoning Technical University, Fuxin 123000, China2.School of Resources of Civil Engineering, Northeastern University, Shenyang 110000, China |
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| Abstract: | In order to study the flexural performance of glass fiber reinforced polymer (GFRP) tube filled with steel bars/concrete hollow members, a nonlinear analysis program was developed. The effects of main parameters such as hollow rate, reinforcement ratio, GFRP tube wall thickness and strength grade of concrete were analyzed systematically. The program was verified by test. The calculation formula of the bearing capacity of GFRP tube filled with reinforced hollow concrete members was established. The results show that the calculation results are in good agreement with the test results by using the nonlinear analysis program and the established bearing capacity formula. The flexural bearing capacity increases with the decrease of the hollow rate and the increase of the reinforcement ratio, the GFRP tube wall thickness and the concrete strength grade. The hollow rate has the greatest influence on the flexural bearing capacity, followed by the reinforcement ratio and the thickness of GFRP tube wall thickness, and the concrete strength grade has relatively less influence on the flexural bearing capacity. The radius ratio of hollow part should be 0.25-0.5. The flexural bearing capacity of the hollow members can be compensated by properly increasing the reinforcement ratio, GFRP tube wall thickness or concrete strength grade. The research conclusion can provide reference for the practical application of the GFRP tube filled with steel bars/concrete hollow member structure. |
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