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Friction-bending composite energy consumption prestress self-resetting steel-bamboo combined beam-column joint
The invention discloses a friction-bending composite energy dissipation prestress self-resetting steel-bamboo combined beam column joint which comprises a beam column formed by bonding thin-wall I-shaped steel and glued bamboo, a prestressed tendon providing self-resetting capacity and a friction-bending composite energy dissipation device composed of L-shaped steel, an inner friction plate, a base plate, a high-strength bolt and an energy dissipation rod. Wherein the first-stage energy consumption of the friction-bending composite energy dissipater corresponds to friction energy consumption, the second-stage energy consumption of the friction-bending composite energy dissipater corresponds to bending energy consumption of an energy consumption rod, energy consumption is enhanced through the two-stage working mechanism of the friction-bending composite energy dissipater, the energy consumption ratio beta is increased, a second starting point and third rigidity are introduced, and the dynamic response and the deformation concentration effect of the structure are limited; and the comprehensive damage of the structure is controlled to be at a repairable performance level, so that the stability and safety of the structure are ensured when an earthquake occurs. According to the thin-wall type I-shaped steel, the beam columns formed by bonding the glued bamboos can effectively prevent local buckling and instability of components, the bearing capacity of the structure is enhanced, and meanwhile local damage caused by unfavorable stress of the ends of wood can be avoided.
本发明公开了一种摩擦‑弯曲复合耗能预应力自复位钢竹组合梁柱节点，包括由薄壁型工字钢和胶合竹粘结组成的梁柱，提供自复位能力的预应力筋，以及由L型钢、内摩擦板、垫板、高强螺栓和耗能杆组成的摩擦‑弯曲复合耗能器。其中，摩擦‑弯曲复合耗能器的第一阶段耗能对应摩擦耗能，第二阶段耗能对应耗能杆弯曲耗能，通过摩擦‑弯曲复合耗能器的两阶段工作机理强化耗能、提高耗能比β，引入第二启动点和第三刚度，限制结构的动力响应和变形集中效应，控制结构综合损伤处于可修的性能水平，使得在地震发生时，保证结构的稳定性和安全。本发明中的薄壁型工字钢中粘结胶合竹形成的梁柱，可有效防止构件的局部屈曲和失稳，增强结构的承载力，同时可以避免木材端部的不利受力而引起的局部破坏。
Friction-bending composite energy consumption prestress self-resetting steel-bamboo combined beam-column joint
The invention discloses a friction-bending composite energy dissipation prestress self-resetting steel-bamboo combined beam column joint which comprises a beam column formed by bonding thin-wall I-shaped steel and glued bamboo, a prestressed tendon providing self-resetting capacity and a friction-bending composite energy dissipation device composed of L-shaped steel, an inner friction plate, a base plate, a high-strength bolt and an energy dissipation rod. Wherein the first-stage energy consumption of the friction-bending composite energy dissipater corresponds to friction energy consumption, the second-stage energy consumption of the friction-bending composite energy dissipater corresponds to bending energy consumption of an energy consumption rod, energy consumption is enhanced through the two-stage working mechanism of the friction-bending composite energy dissipater, the energy consumption ratio beta is increased, a second starting point and third rigidity are introduced, and the dynamic response and the deformation concentration effect of the structure are limited; and the comprehensive damage of the structure is controlled to be at a repairable performance level, so that the stability and safety of the structure are ensured when an earthquake occurs. According to the thin-wall type I-shaped steel, the beam columns formed by bonding the glued bamboos can effectively prevent local buckling and instability of components, the bearing capacity of the structure is enhanced, and meanwhile local damage caused by unfavorable stress of the ends of wood can be avoided.
本发明公开了一种摩擦‑弯曲复合耗能预应力自复位钢竹组合梁柱节点，包括由薄壁型工字钢和胶合竹粘结组成的梁柱，提供自复位能力的预应力筋，以及由L型钢、内摩擦板、垫板、高强螺栓和耗能杆组成的摩擦‑弯曲复合耗能器。其中，摩擦‑弯曲复合耗能器的第一阶段耗能对应摩擦耗能，第二阶段耗能对应耗能杆弯曲耗能，通过摩擦‑弯曲复合耗能器的两阶段工作机理强化耗能、提高耗能比β，引入第二启动点和第三刚度，限制结构的动力响应和变形集中效应，控制结构综合损伤处于可修的性能水平，使得在地震发生时，保证结构的稳定性和安全。本发明中的薄壁型工字钢中粘结胶合竹形成的梁柱，可有效防止构件的局部屈曲和失稳，增强结构的承载力，同时可以避免木材端部的不利受力而引起的局部破坏。
Friction-bending composite energy consumption prestress self-resetting steel-bamboo combined beam-column joint
一种摩擦-弯曲复合耗能预应力自复位钢竹组合梁柱节点
HUANG LINJIE (author) / WEI YANG (author) / HU JIE (author)
2023-05-30
Patent
Electronic Resource
Chinese
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