装配式T梁桥横隔板参数优化设计分析
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摘要
针对装配式T梁桥横隔板在工程实际中设置参数不统一的问题,通过实地调研收集资料,依托某已建工程,建立29组数值模型,通过对比分析多种工况条件下结构的内力和挠度变化趋势,得出30 m装配式T梁桥结构优先采用实腹式横隔板加强梁的横向刚度,中横隔板厚度取值在12～20 cm之间,中横隔板高度取值在1. 36～1. 56 m之间,主梁和横隔板受力最佳这一结论。通过本文的研究为进一步规范装配式T梁桥横隔板的设置奠定基础,推进T梁结构应用的标准化和规范化。
For prefabricated T girder bridge transverse diaphragm set pattern is not unified problem in engineering practice,through the field survey to collect information,based on an existing project,29 set of numerical model is established,through the analysis of internal force and deflection of the structure of multiple operating conditions change trend, it is concluded that priority of 30 m prefabricated T bridge structures using solid abdominal transverse diaphragm strengthen the transverse stiffness of the beam,the diaphragm plate thickness values between 12 to 20 cm,in the horizontal baffle height values between 1. 36 m to 1. 56 m,girder and diaphragm plate stress best this conclusion. Through the study of this paper,it lays a foundation for further standardizing the setting of the transverse bulkhead of the assembly type T beam bridge, and promotes the standardization and standardization of the application of T beam structure.
For prefabricated T girder bridge transverse diaphragm set pattern is not unified problem in engineering practice,through the field survey to collect information,based on an existing project,29 set of numerical model is established,through the analysis of internal force and deflection of the structure of multiple operating conditions change trend, it is concluded that priority of 30 m prefabricated T bridge structures using solid abdominal transverse diaphragm strengthen the transverse stiffness of the beam,the diaphragm plate thickness values between 12 to 20 cm,in the horizontal baffle height values between 1. 36 m to 1. 56 m,girder and diaphragm plate stress best this conclusion. Through the study of this paper,it lays a foundation for further standardizing the setting of the transverse bulkhead of the assembly type T beam bridge, and promotes the standardization and standardization of the application of T beam structure.
引文
[1] JTG D60-2015,公路桥涵设计通用规范[S].
[2]唐先习,徐岳.混凝土T梁横隔板合理截面尺寸数值分析[J].郑州大学学报(工学版),2010,31(01):34-39.
[3] Liu Yang,Zhi Da Li,Rong Peng. Study on the Diaphragm Effect of the Beam Type Bridge[J]. Applied Mechanics and Materials,2013,2544(351).
[4]黄润,陈阵,刘海青. 20 m预应力混凝土T梁横隔板设置的研究[J].公路,2009(11):25-30.
[5] C. S. Cai,Marcio Araujo,Anand Chandolu,et al. Diaphragm Effects of Prestressed Concrete Girder Bridges:Review and Discussion[J]. Practice Periodical on Structural Design and Construction,2007,12(3).
[6]姜增国,王敏,鲁冲.有无横隔板桥梁结构性能对比分析[J].武汉工程大学学报,2012,34(06):27-29.
[7] Lungui Li,Zhongguo John Ma. Effect of Intermediate Diaphragms on Decked Bulb-Tee Bridge System for Accelerated Construction[J]. Journal of Bridge Engineering,2010,15(6).
[8]王光达. 30 m预应力混凝土T梁中横隔板设置研究[J].交通建设与管理,2014(18):154-157.
[9]吕玉匣,刘炎海.横隔板对多主梁结构受力行为的影响分析[J].兰州交通大学学报,2004(01):38-42.
[2]唐先习,徐岳.混凝土T梁横隔板合理截面尺寸数值分析[J].郑州大学学报(工学版),2010,31(01):34-39.
[3] Liu Yang,Zhi Da Li,Rong Peng. Study on the Diaphragm Effect of the Beam Type Bridge[J]. Applied Mechanics and Materials,2013,2544(351).
[4]黄润,陈阵,刘海青. 20 m预应力混凝土T梁横隔板设置的研究[J].公路,2009(11):25-30.
[5] C. S. Cai,Marcio Araujo,Anand Chandolu,et al. Diaphragm Effects of Prestressed Concrete Girder Bridges:Review and Discussion[J]. Practice Periodical on Structural Design and Construction,2007,12(3).
[6]姜增国,王敏,鲁冲.有无横隔板桥梁结构性能对比分析[J].武汉工程大学学报,2012,34(06):27-29.
[7] Lungui Li,Zhongguo John Ma. Effect of Intermediate Diaphragms on Decked Bulb-Tee Bridge System for Accelerated Construction[J]. Journal of Bridge Engineering,2010,15(6).
[8]王光达. 30 m预应力混凝土T梁中横隔板设置研究[J].交通建设与管理,2014(18):154-157.
[9]吕玉匣,刘炎海.横隔板对多主梁结构受力行为的影响分析[J].兰州交通大学学报,2004(01):38-42.