[1]李秉南,戴航,张继文.高速铁路HRBF500钢筋混凝土圆端形桥墩抗震性能试验研究[J].东南大学学报(自然科学版),2014,44(4):832-837.[doi:10.3969/j.issn.1001-0505.2014.04.027]
 Li Bingnan,Dai Hang,Zhang Jiwen.Experimental study on seismic behavior of HRBF500 rebar reinforced round-ended high-speed railway bridge piers[J].Journal of Southeast University (Natural Science Edition),2014,44(4):832-837.[doi:10.3969/j.issn.1001-0505.2014.04.027]
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高速铁路HRBF500钢筋混凝土圆端形桥墩抗震性能试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第4期
页码:
832-837
栏目:
交通运输工程
出版日期:
2014-07-16

文章信息/Info

Title:
Experimental study on seismic behavior of HRBF500 rebar reinforced round-ended high-speed railway bridge piers
作者:
李秉南12戴航1张继文1
1东南大学土木工程学院, 南京 210096; 2东南大学建筑设计研究院有限公司, 南京 210096
Author(s):
Li Bingnan12 Dai Hang1 Zhang Jiwen1
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2Architectural Design and Research Institute Co., Ltd., Southeast University, Nanjing 210096, China
关键词:
HRBF500钢筋 拟静力试验 高速铁路 圆端形桥墩 抗震性能
Keywords:
HRBF500 rebar pseudo-static test high-speed railway round-ended pier seismic performance
分类号:
U443.22
DOI:
10.3969/j.issn.1001-0505.2014.04.027
摘要:
为了研究纵筋采用500 MPa级细晶粒钢筋的高速铁路圆端形桥墩的抗震性能,对4个配置HRBF500钢筋和1个配置HRB335钢筋的圆端形桥墩试件进行了拟静力试验.试验参数主要包括纵筋强度、轴压比、配筋率和箍筋加密区的拉筋数量.试验结果表明:配置HRBF500钢筋的圆端形桥墩抗震性能变化规律与配置HRB335钢筋的圆端形桥墩基本相同;配置HRBF500钢筋可以显著减少桥墩纵向钢筋的用量,提高桥墩的承载力并具有良好的抗震延性;增加轴压比或提高配筋率均可提高桥墩的承载力,但同时也会减小其变形能力;在墩底箍筋加密区增加拉筋的数量可明显提高桥墩的延性.研究表明,配置HRBF500钢筋的圆端形桥墩具有良好的抗震性能,可在高速铁路工程中安全应用.
Abstract:
To study the seismic behavior of round-ended high-speed railway bridge piers reinforced with 500 MPa fine grained rebar, four HRBF500 rebar reinforced pier specimens and one HRB335 rebar reinforced pier specimen were tested under low-cycle reversed loading. The test parameters mainly include longitudinal reinforcement strength, axial compression ratio, reinforcement ratio and the number of tie bars in the dense stirrup region. The test results show that the change rule of seismic performance of the HRBF500 rebar reinforced pier is much the same as that of the HRB335 rebar reinforced pier. Using HRBF500 rebar can significantly reduce the number of longitudinal reinforcements, and improve the bearing capacity of the pier with good seismic ductility. Increasing the axial compression ratio or the reinforcement ratio can improve the bearing capacity of the pier while reduces its deformation capability. Increasing the number of tie bars within the dense stirrup region can significantly improve the ductility of the pier. The study shows that HRBF500 rebar reinforced round-ended piers have excellent seismic performance, and they can be safely applied to the high-speed railway engineering.

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备注/Memo

备注/Memo:
收稿日期: 2013-11-10.
作者简介: 李秉南(1978—),男,博士生,高级工程师,bingnanli@sina.com.
基金项目: 国家高技术研究发展计划(863计划)资助项目(2008AA030704).
引用本文: 李秉南,戴航,张继文.高速铁路HRBF500钢筋混凝土圆端形桥墩抗震性能试验研究[J].东南大学学报:自然科学版,2014,44(4):832-837. [doi:10.3969/j.issn.1001-0505.2014.04.027]
更新日期/Last Update: 2014-07-20