A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Semi-flexible supporting system for half-through arch bridge arched girder
The invention discloses a half-through arch bridge arched girder semi-flexible supporting system, which is characterized in that a traditional large arched girder supporting structure with a special-shaped outline and a complicated structure is simplified into an inter-rib upper steel cross beam and an inter-rib connecting steel cross beam which are separated up and down, and the midspan bottom of the inter-rib connecting steel cross beam is connected with a concrete arch seat through a steel inclined strut; a semi-flexible supporting system is formed; the two cross beams bear upper loads and the transverse connection effect of the arch ribs respectively, the structure force transmission path is clear, stress is simple, and construction installation and later-period management and maintenance are convenient; due to the arrangement of the steel inclined struts, the mid-span bending moment and vertical displacement of the inter-rib connecting steel cross beams are greatly reduced, and the rigidity and the overall stability of a supporting system are remarkably improved; the side hole bridge span structure is evenly provided with the stand columns for supporting, longitudinal movement of the bridge span is limited under the frictional resistance of multiple supports, the stress concentration problem of single-point limiting is avoided, an expensive damper can be omitted, the construction cost is reduced, the rigidity of the bridge span structure is in smooth transition, the stress change amplitude of the suspender is reduced, and then the reliability and durability of the suspender are improved.
本发明公开了一种中承式拱桥拱梁半柔性支撑体系，将传统大型轮廓异形、构造复杂的拱梁支撑结构化繁为简为两个上下分离的肋间上钢横梁和肋间连接钢横梁，肋间连接钢横梁跨中底部通过钢斜撑与混凝拱座相连，形成半柔性支撑体系；两横梁分别承担上部荷载和拱肋横向联结作用，结构传力路径清晰、受力简单，便于施工安装和后期管养；钢斜撑的设置大大减小了肋间连接钢横梁跨中弯矩和竖向位移，显著提供支撑体系刚度和整体稳定性；边孔桥跨结构均匀布设立柱支撑，多支座摩阻力下限制桥跨纵移，避免了单点限位的应力集中问题，可取消昂贵阻尼器，降低工程造价，使得桥跨结构刚度平稳过渡，降低吊杆的应力变化幅值，进而提高吊杆的可靠度和耐久性。
Semi-flexible supporting system for half-through arch bridge arched girder
The invention discloses a half-through arch bridge arched girder semi-flexible supporting system, which is characterized in that a traditional large arched girder supporting structure with a special-shaped outline and a complicated structure is simplified into an inter-rib upper steel cross beam and an inter-rib connecting steel cross beam which are separated up and down, and the midspan bottom of the inter-rib connecting steel cross beam is connected with a concrete arch seat through a steel inclined strut; a semi-flexible supporting system is formed; the two cross beams bear upper loads and the transverse connection effect of the arch ribs respectively, the structure force transmission path is clear, stress is simple, and construction installation and later-period management and maintenance are convenient; due to the arrangement of the steel inclined struts, the mid-span bending moment and vertical displacement of the inter-rib connecting steel cross beams are greatly reduced, and the rigidity and the overall stability of a supporting system are remarkably improved; the side hole bridge span structure is evenly provided with the stand columns for supporting, longitudinal movement of the bridge span is limited under the frictional resistance of multiple supports, the stress concentration problem of single-point limiting is avoided, an expensive damper can be omitted, the construction cost is reduced, the rigidity of the bridge span structure is in smooth transition, the stress change amplitude of the suspender is reduced, and then the reliability and durability of the suspender are improved.
本发明公开了一种中承式拱桥拱梁半柔性支撑体系，将传统大型轮廓异形、构造复杂的拱梁支撑结构化繁为简为两个上下分离的肋间上钢横梁和肋间连接钢横梁，肋间连接钢横梁跨中底部通过钢斜撑与混凝拱座相连，形成半柔性支撑体系；两横梁分别承担上部荷载和拱肋横向联结作用，结构传力路径清晰、受力简单，便于施工安装和后期管养；钢斜撑的设置大大减小了肋间连接钢横梁跨中弯矩和竖向位移，显著提供支撑体系刚度和整体稳定性；边孔桥跨结构均匀布设立柱支撑，多支座摩阻力下限制桥跨纵移，避免了单点限位的应力集中问题，可取消昂贵阻尼器，降低工程造价，使得桥跨结构刚度平稳过渡，降低吊杆的应力变化幅值，进而提高吊杆的可靠度和耐久性。
Semi-flexible supporting system for half-through arch bridge arched girder
中承式拱桥拱梁半柔性支撑体系
PEI HUITENG (author) / JIA LIJUN (author) / ZHANG XIAOMING (author) / WANG WEI (author) / YU SHAOHUA (author) / LIU YUHUA (author) / CHEN YE (author) / XIE QUN (author) / ZHANG WENCHAO (author) / ZHANG JUN (author)
2022-07-15
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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