含GFRP筋预应力混凝土管桩抗剪性能试验研究

发布时间：2018-03-04 12:49

本文选题：复合配筋　切入点：玻璃纤维增强复合材料(GFRP)　出处：《合肥工业大学学报(自然科学版)》2017年10期 　论文类型：期刊论文

【摘要】：文章介绍了含玻璃纤维增强复合材料(glass fiber reinforced polymer,GFRP)配筋预应力混凝土管桩(以下简称"PRC-G桩"),并进行了抗剪性能的对比试验研究。试验结果表明:GFRP筋与混凝土(C80)可以共同作用,能有效发挥材料的高强性能,GFRP筋的配置较大幅度地改善了普通管桩的抗剪性能,其开裂剪力有显著的提高,是规范值的1.12倍;2种类型桩破坏过程相似,均是从支座处首先出现裂缝,沿桩长方向大致20°~30°夹角方向开展延伸,延伸至加载点垂直面时,以平行于桩长方向继续扩展,最后形成贯通面;按等效圆形截面法计算PRC-G桩的开裂剪力是符合设计要求的,且偏于保守。
[Abstract]:This paper introduces the prestressed concrete pipe pile (PRC-G pile) reinforced with glass glass reinforced polymer (GFRP) reinforced with glass fiber reinforced composite material (PRC-G pile), and makes a comparative experimental study on the shear properties. The experimental results show that the concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete reinforced concrete pile (PRC-G pile) can interact with each other. The configuration of GFRP bars which can effectively exert the high strength properties of materials can greatly improve the shear resistance of ordinary pipe piles, and the cracking shear force of GFRP bars is remarkably improved, which is similar to the failure process of two types of piles of 1.12 times of the standard value. The cracks appear first from the support, extending along the angle direction of about 20 掳and 30 掳of the pile length, extending to the vertical plane of the loading point, continuing to expand parallel to the direction of the pile length, finally forming the connecting plane. The method of equivalent circular section is used to calculate the cracking shear force of PRC-G pile, which meets the design requirements and is conservative.
【作者单位】：安徽省建筑科学研究设计院;合肥工业大学土木与水利工程学院;
【基金】：安徽省建设行业科学计划资助项目(2015YF-30)
【分类号】：TU473.13

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