A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Novel large-span deck type steel truss arch bridge structure system and design method
The invention relates to a novel large-span deck type steel truss arch bridge structure system and a design method, the method comprises the steps that equal-span beam arrangement is conducted in a midspan area, when equal-span arrangement is conducted till the ratio li/hi of the span to the pier height is 0.9-1.1, variable-span beam arrangement is started, and the span of a main beam is gradually increased from the midspan to the two banks; the main beam is configured to be a first link, a second link and a third link which are sequentially arranged, the second link is connected to two or three spans in the spans, and the first link and the third link are connected with all the remaining spans; the main beam and the stand column are connected through an elastic support, and the elastic support has the bidirectional shear deformation capacity. The structure can effectively coordinate the stress of the beam arch, effectively reduce the stress of the main beam, obviously improve the overall stability of the structure, and is safe and reliable, and obvious in economic effect.
本发明关于一种新型大跨度上承式钢桁架拱桥结构体系及设计方法，方法包括跨中区域等跨度布梁，当等跨布置到跨径与墩高之比li/hi位于0.9～1.1时开始进行变跨度布梁，从跨中向两岸看，主梁的跨径逐渐增大；主梁被配置为依次设置的第一联、第二联和第三联，第二联连接于跨中的两跨或三跨，第一联和第三联连接剩余的所有跨；主梁与立柱之间通过弹性支座连接，弹性支座具有双向剪切变形的能力。本发明能够有效协调梁拱受力，有效减小主梁的受力，显著提高结构的整体稳定性，结构安全可靠，经济效应明显。
Novel large-span deck type steel truss arch bridge structure system and design method
The invention relates to a novel large-span deck type steel truss arch bridge structure system and a design method, the method comprises the steps that equal-span beam arrangement is conducted in a midspan area, when equal-span arrangement is conducted till the ratio li/hi of the span to the pier height is 0.9-1.1, variable-span beam arrangement is started, and the span of a main beam is gradually increased from the midspan to the two banks; the main beam is configured to be a first link, a second link and a third link which are sequentially arranged, the second link is connected to two or three spans in the spans, and the first link and the third link are connected with all the remaining spans; the main beam and the stand column are connected through an elastic support, and the elastic support has the bidirectional shear deformation capacity. The structure can effectively coordinate the stress of the beam arch, effectively reduce the stress of the main beam, obviously improve the overall stability of the structure, and is safe and reliable, and obvious in economic effect.
本发明关于一种新型大跨度上承式钢桁架拱桥结构体系及设计方法，方法包括跨中区域等跨度布梁，当等跨布置到跨径与墩高之比li/hi位于0.9～1.1时开始进行变跨度布梁，从跨中向两岸看，主梁的跨径逐渐增大；主梁被配置为依次设置的第一联、第二联和第三联，第二联连接于跨中的两跨或三跨，第一联和第三联连接剩余的所有跨；主梁与立柱之间通过弹性支座连接，弹性支座具有双向剪切变形的能力。本发明能够有效协调梁拱受力，有效减小主梁的受力，显著提高结构的整体稳定性，结构安全可靠，经济效应明显。
Novel large-span deck type steel truss arch bridge structure system and design method
一种新型大跨度上承式钢桁架拱桥结构体系及设计方法
CHEN KEJIAN (author) / SONG SUIDI (author) / ZHANG CHAO (author) / WANG CONG (author) / LI SONGTAO (author) / REN ZHENG (author) / TAN SHENG (author) / WAN MUCONG (author) / MAO JIACHUAN (author) / ZENG YONGPING (author)
2024-02-13
Patent
Electronic Resource
Chinese
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