城市大断面明挖隧道断面形式研究
发布时间:2018-10-26 11:38
【摘要】:断面形式对城市大断面明挖隧道结构内力、施工方案、工程造价等有较大影响,在统计分析我国已建成城市大断面明挖隧道断面形式特点的基础上,对郑州市渠南路隧道工程可能采取的断面形式进行研究,分析直墙平顶、直墙圆顶和直墙折板3种断面形式的受力和断面特点,并采用荷载-结构模型对影响直墙折板隧道断面内力的参数,如折板折起角度、斜板跨度和结构自重等进行研究。结果表明:渠南路隧道采用直墙折板断面可提高断面利用率,改善结构受力条件,且上述3个参数均会影响直墙折板断面内力计算结果。
[Abstract]:The cross-section form has great influence on the internal force, construction scheme, project cost and so on. Based on the statistical analysis of the characteristics of the cross-section of the large cross-section open excavation tunnel in our country, In this paper, the possible cross section forms of tunnel engineering in south canal of Zhengzhou are studied, and the stress and cross section characteristics of straight wall flat top, straight wall dome and straight wall folding plate are analyzed. The load-structure model is used to study the parameters affecting the cross section internal force of the straight wall folded plate tunnel, such as the folding angle of the folded plate, the span of the inclined plate and the weight of the structure. The results show that the use of straight wall folded plate section in canal south tunnel can increase the utilization ratio of section and improve the stress condition of the structure, and all the above three parameters will affect the calculation results of the internal force of the straight wall folded plate section.
【作者单位】: 河南省交通规划设计研究院股份有限公司;
【分类号】:U455.4
本文编号:2295589
[Abstract]:The cross-section form has great influence on the internal force, construction scheme, project cost and so on. Based on the statistical analysis of the characteristics of the cross-section of the large cross-section open excavation tunnel in our country, In this paper, the possible cross section forms of tunnel engineering in south canal of Zhengzhou are studied, and the stress and cross section characteristics of straight wall flat top, straight wall dome and straight wall folding plate are analyzed. The load-structure model is used to study the parameters affecting the cross section internal force of the straight wall folded plate tunnel, such as the folding angle of the folded plate, the span of the inclined plate and the weight of the structure. The results show that the use of straight wall folded plate section in canal south tunnel can increase the utilization ratio of section and improve the stress condition of the structure, and all the above three parameters will affect the calculation results of the internal force of the straight wall folded plate section.
【作者单位】: 河南省交通规划设计研究院股份有限公司;
【分类号】:U455.4
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