Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-span deck type cable-stayed arch bridge and construction method thereof
The large-span deck-type cable-stayed arch bridge comprises a main arch, a bridge tower, a main beam, a stay cable and the like, the main beam is located on the arch crown of the main arch to form a deck-type multi-arch arch bridge structure, and the stay cable arranged in a medial strip of a bridge floor penetrates through the main beam to be anchored on the bridge tower and the main arch so as to reduce bending moment and shearing force of the main arch. And an on-arch stand column is arranged between the main arch and the main beam and is used for transmitting the load of the main beam to the main arch. The combined structure system bridge is economical, reasonable, efficient in stress and easy and convenient to construct, the stress is relatively complex, but the mechanical property is better, and the structural redundancy is larger. According to the bridge type, the stay cables are anchored on the main arches, the internal force of the main arches is adjusted by tensioning the stay cables, the bending moment and the shearing force of the main arches are reduced, meanwhile, the stress of the main arches is assisted and shared, the main arch structure mainly bears the axial force, and the section stress distribution of the main arch structure is more uniform; therefore, the purposes of remarkably reducing the section size of the main arch, reducing the self-weight of the structure and fully utilizing materials are achieved.
本发明公开了一种大跨度上承式斜拉拱桥及其施工方法，包括主拱、桥塔、主梁、斜拉索等，所述主梁位于主拱拱顶上形成上承式连拱拱桥结构，设置于桥面中央分隔带内的斜拉索穿过主梁分别锚固于桥塔和主拱之上，以减少主拱弯矩和剪力，所述主拱与主梁之间设置拱上立柱用于将主梁的荷载传递至主拱。是一种经济合理、受力高效、施工简便的组合结构体系桥梁，虽受力相对更复杂，但力学性能更优、结构冗余度更大。该桥型利用斜拉索锚固在主拱上，通过张拉斜拉索调整主拱内力，在减小主拱的弯矩和剪力的同时辅助、分担主拱受力，使主拱结构以承受轴向力为主，让其截面应力分布更均匀，从而到达显著减小主拱截面尺寸、减轻结构自重、充分利用材料的目的。
Large-span deck type cable-stayed arch bridge and construction method thereof
The large-span deck-type cable-stayed arch bridge comprises a main arch, a bridge tower, a main beam, a stay cable and the like, the main beam is located on the arch crown of the main arch to form a deck-type multi-arch arch bridge structure, and the stay cable arranged in a medial strip of a bridge floor penetrates through the main beam to be anchored on the bridge tower and the main arch so as to reduce bending moment and shearing force of the main arch. And an on-arch stand column is arranged between the main arch and the main beam and is used for transmitting the load of the main beam to the main arch. The combined structure system bridge is economical, reasonable, efficient in stress and easy and convenient to construct, the stress is relatively complex, but the mechanical property is better, and the structural redundancy is larger. According to the bridge type, the stay cables are anchored on the main arches, the internal force of the main arches is adjusted by tensioning the stay cables, the bending moment and the shearing force of the main arches are reduced, meanwhile, the stress of the main arches is assisted and shared, the main arch structure mainly bears the axial force, and the section stress distribution of the main arch structure is more uniform; therefore, the purposes of remarkably reducing the section size of the main arch, reducing the self-weight of the structure and fully utilizing materials are achieved.
本发明公开了一种大跨度上承式斜拉拱桥及其施工方法，包括主拱、桥塔、主梁、斜拉索等，所述主梁位于主拱拱顶上形成上承式连拱拱桥结构，设置于桥面中央分隔带内的斜拉索穿过主梁分别锚固于桥塔和主拱之上，以减少主拱弯矩和剪力，所述主拱与主梁之间设置拱上立柱用于将主梁的荷载传递至主拱。是一种经济合理、受力高效、施工简便的组合结构体系桥梁，虽受力相对更复杂，但力学性能更优、结构冗余度更大。该桥型利用斜拉索锚固在主拱上，通过张拉斜拉索调整主拱内力，在减小主拱的弯矩和剪力的同时辅助、分担主拱受力，使主拱结构以承受轴向力为主，让其截面应力分布更均匀，从而到达显著减小主拱截面尺寸、减轻结构自重、充分利用材料的目的。
Large-span deck type cable-stayed arch bridge and construction method thereof
大跨度上承式斜拉拱桥及其施工方法
LAI YAPING (Autor:in) / WANG GUANNAN (Autor:in) / WU YANZI (Autor:in)
10.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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