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A platform for research: civil engineering, architecture and urbanism
Longitudinal combined toughness restraint system and method for large-span suspension bridge
The invention discloses a long-span suspension bridge longitudinal combination toughness constraint system and method, the system comprises a suspension bridge and a toughness constraint system arranged on the suspension bridge, and the toughness constraint system is provided with a damper module; wherein the damper module comprises M friction type dampers and N speed locking mild steel dampers, and a longitudinal combination toughness constraint system of the friction type dampers, the speed locking mild steel dampers and the longitudinal limiting stop blocks is arranged between the bridge tower and the main beam, and the functions and the effects of the friction type dampers, the speed locking mild steel dampers and the longitudinal limiting stop blocks are separated. The longitudinal additional rigidity and additional damping of the bridge are effectively improved, and the purpose of controlling longitudinal displacement of the main beam in different motion states is achieved by optimally designing parameters such as friction limiting force, the locking speed of a speed locking device, the rigidity before and after yield of soft steel and a limiting gap. Therefore, longitudinal deformation of the beam end and accumulated displacement of the restraining device can be reduced, durability of the restraining device is improved, the scale of the telescopic device is reduced, and static and dynamic stress performance of the bridge is improved.
本发明公开了一种大跨径悬索桥纵向组合韧性约束系统及方法，系统包括悬索桥以及设置于悬索桥上的韧性约束体系，所述韧性约束体系设置有阻尼器模块；其中，所述阻尼器模块包括M个摩擦型阻尼器和N个速度锁定软钢阻尼器，本发明在桥塔与主梁间设置功能作用分离的摩擦型阻尼器、速度锁定软钢阻尼器和纵向限位挡块这一纵向组合韧性约束体系，有效提高了桥梁纵向附加刚度和附加阻尼，通过优化设计摩擦限位力、速度锁定装置的锁定速度、软钢屈服前后刚度及设计限位间隙等参数，实现了控制不同运动状态下主梁纵向位移的目的，从而可降低梁端纵向变形和约束装置的累积位移、提高约束装置耐久性、减小伸缩装置的规模及改善桥梁的静动力受力性能。
Longitudinal combined toughness restraint system and method for large-span suspension bridge
The invention discloses a long-span suspension bridge longitudinal combination toughness constraint system and method, the system comprises a suspension bridge and a toughness constraint system arranged on the suspension bridge, and the toughness constraint system is provided with a damper module; wherein the damper module comprises M friction type dampers and N speed locking mild steel dampers, and a longitudinal combination toughness constraint system of the friction type dampers, the speed locking mild steel dampers and the longitudinal limiting stop blocks is arranged between the bridge tower and the main beam, and the functions and the effects of the friction type dampers, the speed locking mild steel dampers and the longitudinal limiting stop blocks are separated. The longitudinal additional rigidity and additional damping of the bridge are effectively improved, and the purpose of controlling longitudinal displacement of the main beam in different motion states is achieved by optimally designing parameters such as friction limiting force, the locking speed of a speed locking device, the rigidity before and after yield of soft steel and a limiting gap. Therefore, longitudinal deformation of the beam end and accumulated displacement of the restraining device can be reduced, durability of the restraining device is improved, the scale of the telescopic device is reduced, and static and dynamic stress performance of the bridge is improved.
本发明公开了一种大跨径悬索桥纵向组合韧性约束系统及方法，系统包括悬索桥以及设置于悬索桥上的韧性约束体系，所述韧性约束体系设置有阻尼器模块；其中，所述阻尼器模块包括M个摩擦型阻尼器和N个速度锁定软钢阻尼器，本发明在桥塔与主梁间设置功能作用分离的摩擦型阻尼器、速度锁定软钢阻尼器和纵向限位挡块这一纵向组合韧性约束体系，有效提高了桥梁纵向附加刚度和附加阻尼，通过优化设计摩擦限位力、速度锁定装置的锁定速度、软钢屈服前后刚度及设计限位间隙等参数，实现了控制不同运动状态下主梁纵向位移的目的，从而可降低梁端纵向变形和约束装置的累积位移、提高约束装置耐久性、减小伸缩装置的规模及改善桥梁的静动力受力性能。
Longitudinal combined toughness restraint system and method for large-span suspension bridge
一种大跨径悬索桥纵向组合韧性约束系统及方法
CUI BING (author) / SEO WON-KYUNG (author) / XU JUN (author) / LIU GAO (author) / ZHAO LEI (author) / LI CHONG (author) / BAI XIAOYU (author)
2023-04-11
Patent
Electronic Resource
Chinese
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