矩形钢管混凝土桁架结构在连续刚构桥中的应用研究
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摘要
钢管混凝土桁架梁桥以其自重轻、施工方便、造价低以及受力性能好等优点越来越受到广大土木工程设计者的青睐。在我国,采用钢管混凝土桁架梁式体系的桥梁有广州南海紫洞大桥、湖北向家坝大桥以及重庆万州大桥,其均采用圆钢管混凝土。相对于圆形钢管,矩形钢管具有易于切割、节点构造简单、施工方便、与桥面板连接容易以及抗弯刚度大等优点。本文对已建成的钢管混凝土梁桥以及国内外学者对矩形钢管混凝土桁架研究的基础上构思了一种新型钢管混凝土桁架梁式桥。
本文的主要研究工作围绕以下几方面展开:
①对钢管混凝土结构尤其是矩形钢管混凝土结构的受力特点及已建成的钢管混凝土桥进行了介绍,提出了矩形钢管混凝土桁架在梁式桥梁上的应用潜力。
②对钢桁梁桥的组成构造进行详细的分析,并对已建的钢管混凝土桁架梁式桥受力特点进行分析。
③对矩形钢管混凝土桁架及节点的类型构造、计算模型的选取进行系统的分析,为矩形钢管混凝土桁架连续刚构桥的试设计提供了很好的理论基础。
④以越溪河大桥为工程背景,试设计了同等跨径小偏心和大偏心矩形钢管混凝土桁架连续刚构桥,并对施工过程中和成桥状态下的极限承载力进行计算对比分析,得到矩形钢管混凝土桁架连续刚构桥的合理受力模式。
⑤节点是桁架梁桥的关键受力部位,决定了桁架整体结构行为。试设计出一种适合矩形钢管混凝土桁架连续刚构桥的节点形式,并对其承载能力极限状态和节点的焊接强度进行验算。
通过对试设计的矩形钢管混凝土桁架连续刚构桥进行受力分析、经济比较以及节点试设计可知:矩形钢管混凝土桁架连续刚构桥是一种受力合理、施工方便、具有良好经济性的桥梁结构形式。
Concrete-filled steel tube truss bridge has more and more been relied by the majority civil engineering designers for its light weight, convenient construction, low cost and good mechanical properties. In China, Zidong Bridge in Nanhai of Guangzhou, Xiangjiaba Bridge in Hubei and Wanzhou Bridge in Chongqing are concrete-filled steel tube truss bridges which are used with concrete-filled steel tube. Comparing to the circular steel tube, rectangular steel tube has many advantages,such as easy to be cut, simple node structure, convenient construction, easy to be connected with the bridge deck and bending stiffness, etc. Base on the concrete-filled steel tube truss bridges which have been built and the domestic and foreign scholars’studies of the rectangular concrete-filled steel tube, this paper propose a new kind of concrete-filled steel tube truss bridge.
In this paper, a research work mainly focus on the following aspects:
①The mechanical characteristics of the concrete-filled steel tube structure, especially the rectangular concrete-filled steel tube structure, and have been built of the concrete-filled steel tube truss bridge are introduced, propose a rectangular concrete-filled steel tube truss bridge in the potential applications.
②The structure of the steel truss bridge was introduced, the concrete-filled steel tube truss bridges was analyzed, which have been built.
③The rectangular concrete-filled steel tube’s truss and nodes’type and selection of the calculate model are systematic analyzed, which provide a very good basic of trial design theory for the rectangular concrete-filled steel tube truss continuous rigid frame bridge.
④Taking the Yuexi River bridge as the engineering background, try to design a kind of same span of small eccentric and large eccentric rectangular concrete-filled steel tube truss continuous rigid frame bridge, analyze the ultimate bearing capacity of construction process and in the bridge state, and get a reasonable force mode of the rectangular concrete-filled steel tube truss continuous rigid frame bridge.
⑤Node is a key force part of the truss bridge, that determines stucture behavior of the overall truss.This paper try to design a suitable node of the rectangular concrete-filled steel tube truss continuous rigid frame bridge, and check its ultimate limit state and the node intensity of welding.
Through the design of the rectangular concrete-filled steel tube truss continuous rigid frame bridge’s stress analysis, economic comparison and node design, we can see that the rectangular concrete-filled steel tube truss continuous rigid frame bridge is a feasible bridge program of reasonable force, convenient construction and a good economic bridge structure form.
本文的主要研究工作围绕以下几方面展开:
①对钢管混凝土结构尤其是矩形钢管混凝土结构的受力特点及已建成的钢管混凝土桥进行了介绍,提出了矩形钢管混凝土桁架在梁式桥梁上的应用潜力。
②对钢桁梁桥的组成构造进行详细的分析,并对已建的钢管混凝土桁架梁式桥受力特点进行分析。
③对矩形钢管混凝土桁架及节点的类型构造、计算模型的选取进行系统的分析,为矩形钢管混凝土桁架连续刚构桥的试设计提供了很好的理论基础。
④以越溪河大桥为工程背景,试设计了同等跨径小偏心和大偏心矩形钢管混凝土桁架连续刚构桥,并对施工过程中和成桥状态下的极限承载力进行计算对比分析,得到矩形钢管混凝土桁架连续刚构桥的合理受力模式。
⑤节点是桁架梁桥的关键受力部位,决定了桁架整体结构行为。试设计出一种适合矩形钢管混凝土桁架连续刚构桥的节点形式,并对其承载能力极限状态和节点的焊接强度进行验算。
通过对试设计的矩形钢管混凝土桁架连续刚构桥进行受力分析、经济比较以及节点试设计可知:矩形钢管混凝土桁架连续刚构桥是一种受力合理、施工方便、具有良好经济性的桥梁结构形式。
Concrete-filled steel tube truss bridge has more and more been relied by the majority civil engineering designers for its light weight, convenient construction, low cost and good mechanical properties. In China, Zidong Bridge in Nanhai of Guangzhou, Xiangjiaba Bridge in Hubei and Wanzhou Bridge in Chongqing are concrete-filled steel tube truss bridges which are used with concrete-filled steel tube. Comparing to the circular steel tube, rectangular steel tube has many advantages,such as easy to be cut, simple node structure, convenient construction, easy to be connected with the bridge deck and bending stiffness, etc. Base on the concrete-filled steel tube truss bridges which have been built and the domestic and foreign scholars’studies of the rectangular concrete-filled steel tube, this paper propose a new kind of concrete-filled steel tube truss bridge.
In this paper, a research work mainly focus on the following aspects:
①The mechanical characteristics of the concrete-filled steel tube structure, especially the rectangular concrete-filled steel tube structure, and have been built of the concrete-filled steel tube truss bridge are introduced, propose a rectangular concrete-filled steel tube truss bridge in the potential applications.
②The structure of the steel truss bridge was introduced, the concrete-filled steel tube truss bridges was analyzed, which have been built.
③The rectangular concrete-filled steel tube’s truss and nodes’type and selection of the calculate model are systematic analyzed, which provide a very good basic of trial design theory for the rectangular concrete-filled steel tube truss continuous rigid frame bridge.
④Taking the Yuexi River bridge as the engineering background, try to design a kind of same span of small eccentric and large eccentric rectangular concrete-filled steel tube truss continuous rigid frame bridge, analyze the ultimate bearing capacity of construction process and in the bridge state, and get a reasonable force mode of the rectangular concrete-filled steel tube truss continuous rigid frame bridge.
⑤Node is a key force part of the truss bridge, that determines stucture behavior of the overall truss.This paper try to design a suitable node of the rectangular concrete-filled steel tube truss continuous rigid frame bridge, and check its ultimate limit state and the node intensity of welding.
Through the design of the rectangular concrete-filled steel tube truss continuous rigid frame bridge’s stress analysis, economic comparison and node design, we can see that the rectangular concrete-filled steel tube truss continuous rigid frame bridge is a feasible bridge program of reasonable force, convenient construction and a good economic bridge structure form.
引文
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[21]伍尚干.钢管混凝土短柱强度计算新探[J].长沙:中外公路.2002.22(6).76~79
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[32]K.C.G.Ong,J.B. Hao, P.Paramasivam.A strut-and-tie model for ultimate loads of precast concrete joints with loop connections in tension.Construction and Building Materials. 2006.169~176
[33]Shiming Chen. Discussion of“Long-term analysis of steel–concrete composite beams:FE modeling for effective width evaluation”.Engineering Structures.2006.28.1110~1121
[34]P.G. Bakir, H.M. Boduroglu. Mechanical behaviour and non-linear analysis of short beams using softened truss and direct strut & tie models,Engineering Structures.2005.27.6396~6451
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[2]钟善桐.钢管混凝土结构(修订版).哈尔滨:黑龙江科学技术出版社,1995
[3]韩林海.钢管混凝土结构.北京:科学出版社,2000
[4]张贵中.万州大桥钢管混凝土桁架技术研究[D].成都:西南交通大学硕士学位论文.2002
[5]陈勇.新型钢管混凝土连续刚构结构形式研究[D].重庆:重庆交通大学硕士学位论文.2009
[6]范小平.预应力钢管混凝土连续刚构桥的结构形式研究[D].重庆:重庆交通大学硕士学位论文.2010
[7]李玉红.钢管混凝土桁架结构抗弯刚度研究[D].西安:长安大学硕士学位论文.2005
[8]张联燕等.钢管混凝土空间桁架组合梁式结构[M].北京:人民交通出版社.1999
[9]刘玉擎.组合桥梁结构[M].上海:同济大学出版社.2005
[10]方震山.向家坝大桥设计与施工[J].有色金属设计与研究.2003.21~23
[11]王秀丽.大跨度空间钢结构分析与概念设计[M].北京:机械工业出版社.2008
[12]钱若军,杨联萍,胥传熹.空间格构结构设计[M].南京:东南大学出版社.2007
[13][荷]J.沃登尼尔著.张其林,刘大康译.钢管截面的结构应用.上海:同济大学出版社.2004
[14]刘永健.矩形钢管混凝土桁架节点极限承载力试验与设计方法研究.长沙:湖南大学博士学位论文,2003.
[15]刘君平.矩形钢管混凝土桁架设计方法研究.长沙:长沙理工大学硕士学位论文,2005.
[16]刘金胜.矩形钢管混凝土桁架受力性能的有限元分析.武汉:武汉理工大学硕士学位论文.2007
[17]吝红育,董骊宁,高迎社.矩形钢管混凝土桁架与圆形钢管混凝土桁架受力性能对比分析.沈阳:混凝土.2008.8
[18]刘永健,李运喜,刘君平,杨根杰.受压弦管填充混凝土的矩形钢管桁架静力性能分析.西安:建筑科学与工程学报.2008.12
[19]刘永健,周绪红,邹银生等.矩形钢管混凝土横向局部承压强度的试验研究.北京:建筑结构学报,2003,24(2):42~48.
[20]艾智能.钢管混凝土拱桥节点疲劳寿命研究[D].成都:西南交通大学硕士学位论文.2002
[21]伍尚干.钢管混凝土短柱强度计算新探[J].长沙:中外公路.2002.22(6).76~79
[22]凤峰,王福来.空间钢管桁架直接焊接相贯节点研究[J].合肥:安徽水利水电职业技术学院学报.2008.8(1).11~12
[23]中国工程建筑标准化协会标准.矩形钢管混凝土结构技术规程.武汉:2004.
[24]《钢结构设计规范》GB50017-2002.北京:中国建筑工业出版社,2002.
[25]黄晓红.网架结构设计方法的发展及其优化设计[J].国外建材科技.2006.27(5).73~74
[26]陈宝春.现代钢管混凝土拱桥设计与施工[M].北京:人民交通出版社.1999
[27]周远棣,徐君兰.钢桥[M].北京:人民交通出版社.1999
[28]李星荣,魏才昂,丁峙崐等.钢结构连接节点设计手册(第二版).北京:中国建筑工业出版社,2005.
[29]韩林海,杨有福.现代钢管混凝土结构技术.北京:中国建筑工业出版社,2004.
[30]小西一郎(日).钢桥.北京:人民铁道出版社,1980
[31]A.M.Ruiz-Teran,A.C.Aparicio.Parameters governing the response of under-deck cable-stayed bridges.2007.34.1016~1025
[32]K.C.G.Ong,J.B. Hao, P.Paramasivam.A strut-and-tie model for ultimate loads of precast concrete joints with loop connections in tension.Construction and Building Materials. 2006.169~176
[33]Shiming Chen. Discussion of“Long-term analysis of steel–concrete composite beams:FE modeling for effective width evaluation”.Engineering Structures.2006.28.1110~1121
[34]P.G. Bakir, H.M. Boduroglu. Mechanical behaviour and non-linear analysis of short beams using softened truss and direct strut & tie models,Engineering Structures.2005.27.6396~6451
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