[1]周康,戴国亮,杨阳,等.CBF管桩低周反复荷载试验研究[J].东南大学学报(自然科学版),2018,48(3):491-495.[doi:10.3969/j.issn.1001-0505.2018.03.017]
 Zhou Kang,Dai Guoliang,Yang Yang,et al.Experimental study on low-cyclic reversed loading of CBF pile[J].Journal of Southeast University (Natural Science Edition),2018,48(3):491-495.[doi:10.3969/j.issn.1001-0505.2018.03.017]
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CBF管桩低周反复荷载试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
48
期数:
2018年第3期
页码:
491-495
栏目:
土木工程
出版日期:
2018-05-20

文章信息/Info

Title:
Experimental study on low-cyclic reversed loading of CBF pile
作者:
周康戴国亮杨阳龚维明
东南大学混凝土及预应力混凝土教育部重点实验室, 南京210096; 东南大学土木工程学院, 南京210096
Author(s):
Zhou Kang Dai Guoliang Yang Yang Gong Weiming
Key of Laboratory for Concrete and Prestress Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China
School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
CBF管桩 延性性能 低周反复试验 水平承载力
Keywords:
continuous basalt fiber(CBF)pile ductility performance low-cyclic reversed loading horizontal bearing capacity
分类号:
TU473
DOI:
10.3969/j.issn.1001-0505.2018.03.017
摘要:
为深入研究CBF管桩的水平承载力性能,开展了CBF管桩的低周反复荷载试验.绘制CBF管桩的滞回曲线和骨架曲线,并将其与PHC管桩和PRC管桩进行比较,分析CBF管桩刚度退化、延性和耗能方面的规律.结果表明,CBF管桩失去承载力前表面未出现裂缝,产生较大变形后CBF管突然断裂,管桩失去承载力.CBF管桩骨架曲线不存在平行/下降段,但极限位移较大,属于无明显屈服点的延性破坏.CBF管桩的极限承载力远大于PHC管桩和PRC管桩,但弹性模量较小,极限位移较大.通过比较三者的位移延性系数和能量耗散系数发现,CBF管桩具有良好的耗能性能.
Abstract:
To explore the capacity of the horizontal bearing force of continuous basalt fiber(CBF)piles, the low-cyclic reversed loading tests of CBF piles were carried out. The hysteretic curve and the skeleton curve of the CBF piles were drawn and compared with those of the prestressed high-strength concrete(PHC)and the prestressed concrete(PRC)piles. The laws on the stiffness degeneration, the ductility and the energy dissipation of the CBF piles were analyzed. The results show that there was no crack on the CBF pile before losing the bearing capacity. After the generation of large deformation, the CBF pile suddenly broke and then lost its bearing capacity. There is no plane or decreasing part in the skeleton curve, but the deformation of the CBF pile is large and the failure belongs to the ductile failure without apparent yield points. The limit bearing capacity of the CBF pile is much larger than those of the PHC pile and the PRC pile, but the elastic modulus is lower and the limit displacement is higher. The comparison results of the displacement ductility coefficients and the energy dissipation coefficients of the three kinds of piles show that the CBF pile has good performance on the energy dissipation quality.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2017-12-05.
作者简介: 周康(1993—),男,硕士生;戴国亮(联系人),男,博士,教授,博士生导师,daigl@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51478109,51678145)、国家重点研发计划专项资助项目(2017YFC0703408).
引用本文: 周康,戴国亮,杨阳,等.CBF管桩低周反复荷载试验研究[J].东南大学学报(自然科学版),2018,48(3):491-495. DOI:10.3969/j.issn.1001-0505.2018.03.017.
更新日期/Last Update: 2018-05-20