[1]张磊,钱振东,刘云.立转式开启桥铺装结构静动响应分析[J].东南大学学报(自然科学版),2010,40(6):1271-1275.[doi:10.3969/j.issn.1001-0505.2010.06.027]
 Zhang Lei,Qian Zhendong,Liu Yun.Static and dynamic responses of pavement structure on bascule bridge[J].Journal of Southeast University (Natural Science Edition),2010,40(6):1271-1275.[doi:10.3969/j.issn.1001-0505.2010.06.027]
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立转式开启桥铺装结构静动响应分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第6期
页码:
1271-1275
栏目:
交通运输工程
出版日期:
2010-11-20

文章信息/Info

Title:
Static and dynamic responses of pavement structure on bascule bridge
作者:
张磊 钱振东 刘云
东南大学智能运输系统研究中心, 南京 210096
Author(s):
Zhang Lei Qian Zhendong Liu Yun
Intelligent Transport System Research Center, Southeast University, Nanjing 210096, China
关键词:
立转式开启桥 桥面铺装 有限单元法 动响应
Keywords:
bascule bridge bridge pavement finite element method dynamic response
分类号:
U443.33
DOI:
10.3969/j.issn.1001-0505.2010.06.027
摘要:
为了探讨立转开启式桥梁桥面铺装早期病害的产生机理,从力学分析的角度出发,以天津海响螺湾开启桥为工程背景,采用有限单元方法,建立了开启桥正交异性钢桥面铺装体系仿真模型.对于桥梁闭合阶段,分析了铺装层在车载作用下的静力响应,并验证了模型的有效性; 对于桥梁开启阶段,计算了不同开启角位置时铺装层的动力响应,并分析不同开启速度和铺装结构模量对铺装层动力响应的影响.研究结果表明:铺装层的剪切应力随着开启角度的增大而增加,开启角度和速度的变化会引起剪切应力的非均匀分布; 在开启速度和铺装模量较大时,剪切应力将大于桥梁闭合通车状态下的最大不利应力,成为控制指标; 由于环境温度的变化,铺装层的模量较难控制,因此提出一个适宜的开启速度以减小铺装层与钢板之间的剪切应力,而在设计开启速度较大时则提出模量的控制指标.
Abstract:
In order to discuss the mechanism of the serious premature failures of the pavements found on many bascule bridges, the finite element model of the pavement system on the Haihe Bridge being built in Tianjin China was employed. First, the static response of the pavement under vehicles was calculated in respect to the closed status of the bascule bridge. Then the dynamic response of the pavement at different opening angle was analyzed in respect to the opening status of the bascule bridge. The influence of the different rotation velocities and different pavement elastic modulus on the stress distribution was also studied. The research results show that the shear stress of the pavement increases greatly when the main girder opens wider, meanwhile the girder rotation angle and rotation speed would induce a non-uniform distribution of the shear stress. When the rotation speed is high and the pavement modulus is large, this shear stress would be greater than the critical stress under the closed status and become the control index for the pavement design. Since it is hard to control the pavement modulus due to the variation of environmental temperature, an appropriate rotation velocity is suggested for reducing the shear stress between the pavement and the steel deck. While in the case when the high rotation speed is required, the limitation value of the pavement modulus must be provided.

参考文献/References:

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[3] 张磊.大跨径桥梁钢桥面铺装动荷载响应研究[D].南京:东南大学交通学院,2007.
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[5] Huang W,Qian Z D,Chen G,et al.Epoxy asphalt concrete paving on the deck of long-span steel bridges [J].Chinese Science Bulletin,2003,48(21):2391-2394.
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备注/Memo

备注/Memo:
作者简介: 张磊(1977—),男,博士,讲师, lei821@hotmail.com.
基金项目: 国家自然科学基金青年基金资助项目(50908054)、教育部博士点新教师基金资助项目(20090092120063).
引文格式: 张磊,钱振东,刘云.立转式开启桥铺装结构静动响应分析[J].东南大学学报:自然科学版,2010,40(6):1271-1275. [doi:10.3969/j.issn.1001-0505.2010.06.027]
更新日期/Last Update: 2010-11-20