[1]端茂军,刘钊,张建东,等.钢桁腹-混凝土组合结构桥梁新型PBL-钢管节点试验研究[J].东南大学学报(自然科学版),2016,46(3):572-577.[doi:10.3969/j.issn.1001-0505.2016.03.019]
 Duan Maojun,Liu Zhao,Zhang Jiandong,et al.Experimental study on new PBL-steel tube joint for steel truss-webbed concrete slab composite bridges[J].Journal of Southeast University (Natural Science Edition),2016,46(3):572-577.[doi:10.3969/j.issn.1001-0505.2016.03.019]
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钢桁腹-混凝土组合结构桥梁新型PBL-钢管节点试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第3期
页码:
572-577
栏目:
交通运输工程
出版日期:
2016-05-20

文章信息/Info

Title:
Experimental study on new PBL-steel tube joint for steel truss-webbed concrete slab composite bridges
作者:
端茂军1刘钊1张建东2刘朵2
1东南大学土木工程学院, 南京210096; 2江苏省交通科学研究院股份有限公司, 南京211112
Author(s):
Duan Maojun1 Liu Zhao1 Zhang Jiandong2 Liu Duo2
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2Jiangsu Transportation Research Institute Co., Ltd., Nanjing 211112, China
关键词:
钢桁腹 组合结构桥梁 PBL-钢管节点 抗剪承载力
Keywords:
steel truss-webbed composite bridge PBL(perfobond leiste)-steel tube joint shear capacity
分类号:
U443.4
DOI:
10.3969/j.issn.1001-0505.2016.03.019
摘要:
开发了一种适用于钢桁腹-混凝土组合结构桥梁、便于现场快速组装的新型PBL-钢管节点. 为研究该节点的力学性能,制作了大比例缩尺模型试件并进行了静力加载试验,同时制作了一个不带开孔夹持钢板的简单V形钢管节点试件进行对比. 研究结果表明: 新型PBL-钢管节点的破坏形态表现为钢管交汇区的直剪破坏,导致破坏的主要原因是混凝土弦杆节间的轴力差在节点区产生的竖向剪力; 设置夹持钢板可提高节点的抗剪承载力及变形能力,但夹持钢板作用存在滞后效应; 新型PBL-钢管节点的抗剪承载力主要由连接螺栓、PBL剪力键及弦杆混凝土提供,基于节点破坏形态提出的抗剪承载力简化公式的计算结果偏于安全,可用于指导节点设计.新型PBL-钢管节点是一种可靠的节点形式,适用于实际工程.
Abstract:
A new PBL(perfobond leiste)-steel tube joint suitable for steel truss-webbed concrete slab composite bridges and facilitates rapid field assembly was developed. To investigate the mechanical performance of this joint, a static loading test on a large-scale model was conducted. And a simple V-shaped steel tube joint specimen without perforated clamping plates was tested for comparison. The results indicate that the failure mode of the new PBL-steel tube joint is the direct-shear failure in the joint area of the tube, and the main reason for the failure is the vertical shear in the joint area caused by the axial force difference of the chords. The shear capacity and the deformation capacity of the joint can be improved by the clamping steel plate, but the action shows hysteresis effect. The shear capacity of the PBL-steel tube joint is primarily contributed by the connecting bolts, the PBL shear connectors, and concrete of the chords. The calculation results of the simplified formula of the shear bearing capacity based on the failure mode of the joint is relatively safe, and the formula can be used to guide joint design. The new PBL-steel tube joint is reliable and for practical engineering.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2015-09-30.
作者简介: 端茂军(1981—),男,博士生; 刘钊(联系人),男,博士,教授,博士生导师,mr.liuzhao@seu.edu.cn.
基金项目: 江苏省自然科学基金面上资助项目(BK2009028)、江苏省交通运输科学研究计划资助项目(2014Y01).
引用本文: 端茂军,刘钊,张建东,等.钢桁腹-混凝土组合结构桥梁新型PBL-钢管节点试验研究[J].东南大学学报(自然科学版),2016,46(3):572-577. DOI:10.3969/j.issn.1001-0505.2016.03.019.
更新日期/Last Update: 2016-05-20