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A platform for research: civil engineering, architecture and urbanism
Long-connected large-span arch stiffening steel truss girder bridge suitable for ballastless track
The invention discloses a long-connected large-span arch stiffening steel truss girder bridge suitable for a ballastless track, which comprises a main girder and an arch rib arranged on the main girder, the main girder comprises main girder chord members and steel truss girder web members, a telescopic girder rigid hinge is arranged between the main girder chord members, a telescopic arch rib rigid hinge is arranged in the arch rib, and the steel truss girder web members are connected with the main girder chord members. And the beam part rigid hinge and the arch rib rigid hinge are uniformly distributed at the midspan position. Stretching and retracting of the main beam are achieved through the beam part rigid hinge in the main beam, meanwhile, bending moment can be transmitted, the linear segment arch rib is arranged at the arch crown position of the arch rib, an installation foundation is provided for the arch rib rigid hinge, and stretching and retracting of the arch rib are achieved through the arch rib rigid hinge. The displacement of the beam end under the temperature load can be effectively reduced, so that the requirements of ballastless track laying of a high-speed railway and high-speed operation of a train are met, and the super-long-joint large-span arch stiffening steel truss beam can be applied to a ballastless track bridge of the high-speed railway.
本发明公开了一种适用于无砟轨道的长联大跨拱加劲钢桁梁桥，包括主梁及设置在主梁上的拱肋，所述主梁包括主梁弦杆和钢桁梁腹杆，所述主梁弦杆之间设置有能够伸缩的梁部刚性铰，所述拱肋中设置有能够伸缩的拱肋刚性铰，所述梁部刚性铰、拱肋刚性铰均布设在跨中位置。本发明通过主梁中的梁部刚性铰实现主梁的伸缩，同时能够传递弯矩，通过在拱肋的拱顶位置设置直线段拱肋，为拱肋刚性铰提供安装基础，通过拱肋刚性铰实现拱肋的伸缩。本发明可以有效减小梁端在温度荷载下的位移量，以满足高速铁路无砟轨道铺设及列车高速运营的要求，使得超长联大跨拱加劲钢桁梁可以应用在高速铁路无砟轨道桥梁上。
Long-connected large-span arch stiffening steel truss girder bridge suitable for ballastless track
The invention discloses a long-connected large-span arch stiffening steel truss girder bridge suitable for a ballastless track, which comprises a main girder and an arch rib arranged on the main girder, the main girder comprises main girder chord members and steel truss girder web members, a telescopic girder rigid hinge is arranged between the main girder chord members, a telescopic arch rib rigid hinge is arranged in the arch rib, and the steel truss girder web members are connected with the main girder chord members. And the beam part rigid hinge and the arch rib rigid hinge are uniformly distributed at the midspan position. Stretching and retracting of the main beam are achieved through the beam part rigid hinge in the main beam, meanwhile, bending moment can be transmitted, the linear segment arch rib is arranged at the arch crown position of the arch rib, an installation foundation is provided for the arch rib rigid hinge, and stretching and retracting of the arch rib are achieved through the arch rib rigid hinge. The displacement of the beam end under the temperature load can be effectively reduced, so that the requirements of ballastless track laying of a high-speed railway and high-speed operation of a train are met, and the super-long-joint large-span arch stiffening steel truss beam can be applied to a ballastless track bridge of the high-speed railway.
本发明公开了一种适用于无砟轨道的长联大跨拱加劲钢桁梁桥，包括主梁及设置在主梁上的拱肋，所述主梁包括主梁弦杆和钢桁梁腹杆，所述主梁弦杆之间设置有能够伸缩的梁部刚性铰，所述拱肋中设置有能够伸缩的拱肋刚性铰，所述梁部刚性铰、拱肋刚性铰均布设在跨中位置。本发明通过主梁中的梁部刚性铰实现主梁的伸缩，同时能够传递弯矩，通过在拱肋的拱顶位置设置直线段拱肋，为拱肋刚性铰提供安装基础，通过拱肋刚性铰实现拱肋的伸缩。本发明可以有效减小梁端在温度荷载下的位移量，以满足高速铁路无砟轨道铺设及列车高速运营的要求，使得超长联大跨拱加劲钢桁梁可以应用在高速铁路无砟轨道桥梁上。
Long-connected large-span arch stiffening steel truss girder bridge suitable for ballastless track
一种适用于无砟轨道的长联大跨拱加劲钢桁梁桥
SUN ZONGLEI (author) / SU WEI (author) / LIU KAI (author) / WANG KAILIN (author) / ZHANG SHANG (author) / WANG JIANGBO (author) / ZHANG YUE (author) / LI YONGXING (author) / LEE DAESUNG (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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