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Self-resetting energy dissipation connecting structure of swinging pier-tie beam
The invention discloses a self-resetting energy dissipation connecting structure of a swinging pier-tie beam, and belongs to the technical field of disaster prevention and shock absorption of bridge engineering structures. The connecting structure is composed of a swinging pier, a tie beam, a steel base plate, steel sleeves and shape memory alloy (SMA) rods. Inner and outer layers of steel sleevesare arranged at two ends of the tie beam and are welded with groove steel plates, and the groove steel plates and the convex groove steel plates are directly butted and connected through the SMA rods. When an earthquake is small, the structure can improve the stability of the swinging pier, so that the structure is kept in an elastic range; when the earthquake is large, the tie beam and the bridge pier are lifted away to avoid damage to a bridge pier-tie beam joint, and meanwhile the SMA rods are lengthened to dissipate earthquake energy and provide self-resetting capacity. Therefore, the structure can improve the stability of the swinging pier, limit the earthquake response of the bridge structure and the plastic damage of the pier-tie beam node, and solve the problems of serious damageand large residual deformation of the connecting node of the swinging pier and the traditional cast-in-place tie beam after the earthquake action.
一种摇摆桥墩‑系梁的自复位耗能连接构造，属于桥梁工程结构防灾减震技术领域。由摇摆桥墩、系梁、钢垫板、钢套筒以及形状记忆合金(SMA)棒构成。系梁两端设置内外两层钢套筒并与凹槽钢板焊接连接，凹槽钢板与凸槽钢板直接对接，并通过SMA棒连接。当地震较小时，该构造可提高摇摆桥墩稳定性，使结构保持在弹性范围内；当地震较大时，该造使系梁与桥墩之间发生提离而避免桥墩‑系梁的节点破坏，同时SMA棒被拉长而发挥耗散地震能量并提供自复位能力。因此该构造可提高摇摆桥墩稳定性，限制桥梁结构地震反应和桥墩‑系梁节点塑性损伤，可解决摇摆桥墩与传统现浇系梁的连接节点在地震作用后损伤破坏严重，以及残余变形大的问题。
Self-resetting energy dissipation connecting structure of swinging pier-tie beam
The invention discloses a self-resetting energy dissipation connecting structure of a swinging pier-tie beam, and belongs to the technical field of disaster prevention and shock absorption of bridge engineering structures. The connecting structure is composed of a swinging pier, a tie beam, a steel base plate, steel sleeves and shape memory alloy (SMA) rods. Inner and outer layers of steel sleevesare arranged at two ends of the tie beam and are welded with groove steel plates, and the groove steel plates and the convex groove steel plates are directly butted and connected through the SMA rods. When an earthquake is small, the structure can improve the stability of the swinging pier, so that the structure is kept in an elastic range; when the earthquake is large, the tie beam and the bridge pier are lifted away to avoid damage to a bridge pier-tie beam joint, and meanwhile the SMA rods are lengthened to dissipate earthquake energy and provide self-resetting capacity. Therefore, the structure can improve the stability of the swinging pier, limit the earthquake response of the bridge structure and the plastic damage of the pier-tie beam node, and solve the problems of serious damageand large residual deformation of the connecting node of the swinging pier and the traditional cast-in-place tie beam after the earthquake action.
一种摇摆桥墩‑系梁的自复位耗能连接构造，属于桥梁工程结构防灾减震技术领域。由摇摆桥墩、系梁、钢垫板、钢套筒以及形状记忆合金(SMA)棒构成。系梁两端设置内外两层钢套筒并与凹槽钢板焊接连接，凹槽钢板与凸槽钢板直接对接，并通过SMA棒连接。当地震较小时，该构造可提高摇摆桥墩稳定性，使结构保持在弹性范围内；当地震较大时，该造使系梁与桥墩之间发生提离而避免桥墩‑系梁的节点破坏，同时SMA棒被拉长而发挥耗散地震能量并提供自复位能力。因此该构造可提高摇摆桥墩稳定性，限制桥梁结构地震反应和桥墩‑系梁节点塑性损伤，可解决摇摆桥墩与传统现浇系梁的连接节点在地震作用后损伤破坏严重，以及残余变形大的问题。
Self-resetting energy dissipation connecting structure of swinging pier-tie beam
一种摇摆桥墩-系梁的自复位耗能连接构造
DU XIULI (author) / CHEN JINGYI (author) / HAN QIANG (author) / ZHOU YULONG (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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