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A platform for research: civil engineering, architecture and urbanism
Fabricated frame beam-column joint pressed by local prestress and used for structural reinforcement and construction method of fabricated frame beam-column joint
The invention relates to an assembly type frame beam-column joint for structural reinforcement and a construction method thereof. Newly-added frame columns are connected with original frame columns, newly-added frame beams are connected with original frame beams, and the newly-added frame columns are continuous at the beam-column joint; two prestressed tendon curve hole channels are symmetrically reserved in the upper portion and the lower portion of the newly-added frame beam, the prestressed tendon hole channels are reserved in the upper portion of the beam and the lower portion of the beam, the unbonded prestressed tendons are arranged along the prestressed tendon hole channels reserved in the upper portion of the beam, and the unbonded prestressed tendons are arranged along the prestressed tendon hole channels reserved in the lower portion of the beam; the unbonded prestressed tendons are tensioned to generate frictional resistance so as to resist shearing force generated by the beam end, meanwhile, the unbonded prestressed tendons can keep elasticity under the action of an earthquake, and the function of self-resetting after the earthquake can be achieved. Compared with a traditional prestressed tendon penetrating design, materials are saved, construction is convenient, the anti-seismic toughness of an existing structure can be improved, erecting of supports can be omitted due to the fact that brackets are arranged at the joint connecting positions, the construction cost is saved, and the construction efficiency is improved.
本发明涉及一种结构加固用局部预应力压紧的装配式框架梁柱节点及其施工方法，新增框架柱与原框架柱相连，新增框架梁与原框架梁相连，新增框架柱在梁柱节点处连续；新增框架梁的上部和下部对称预留两个预应力筋曲线孔道：梁上部预留预应力筋孔道和梁下部预留预应力筋孔道，无粘结预应力筋沿梁上部预留预应力筋孔道布置，无粘结预应力筋沿梁下部预留预应力筋孔道布置；张拉无粘结预应力筋产生摩擦阻力可抵抗梁端产生的剪力，同时无粘结预应力筋在地震作用下可保持弹性，可实现震后自主复位的功能。相比传统预应力筋贯穿设计，节省材料，施工方便，可提高既有结构的抗震韧性，节点连接处设有牛腿可免除支撑的搭设，节约施工成本，提高施工效率。
Fabricated frame beam-column joint pressed by local prestress and used for structural reinforcement and construction method of fabricated frame beam-column joint
The invention relates to an assembly type frame beam-column joint for structural reinforcement and a construction method thereof. Newly-added frame columns are connected with original frame columns, newly-added frame beams are connected with original frame beams, and the newly-added frame columns are continuous at the beam-column joint; two prestressed tendon curve hole channels are symmetrically reserved in the upper portion and the lower portion of the newly-added frame beam, the prestressed tendon hole channels are reserved in the upper portion of the beam and the lower portion of the beam, the unbonded prestressed tendons are arranged along the prestressed tendon hole channels reserved in the upper portion of the beam, and the unbonded prestressed tendons are arranged along the prestressed tendon hole channels reserved in the lower portion of the beam; the unbonded prestressed tendons are tensioned to generate frictional resistance so as to resist shearing force generated by the beam end, meanwhile, the unbonded prestressed tendons can keep elasticity under the action of an earthquake, and the function of self-resetting after the earthquake can be achieved. Compared with a traditional prestressed tendon penetrating design, materials are saved, construction is convenient, the anti-seismic toughness of an existing structure can be improved, erecting of supports can be omitted due to the fact that brackets are arranged at the joint connecting positions, the construction cost is saved, and the construction efficiency is improved.
本发明涉及一种结构加固用局部预应力压紧的装配式框架梁柱节点及其施工方法，新增框架柱与原框架柱相连，新增框架梁与原框架梁相连，新增框架柱在梁柱节点处连续；新增框架梁的上部和下部对称预留两个预应力筋曲线孔道：梁上部预留预应力筋孔道和梁下部预留预应力筋孔道，无粘结预应力筋沿梁上部预留预应力筋孔道布置，无粘结预应力筋沿梁下部预留预应力筋孔道布置；张拉无粘结预应力筋产生摩擦阻力可抵抗梁端产生的剪力，同时无粘结预应力筋在地震作用下可保持弹性，可实现震后自主复位的功能。相比传统预应力筋贯穿设计，节省材料，施工方便，可提高既有结构的抗震韧性，节点连接处设有牛腿可免除支撑的搭设，节约施工成本，提高施工效率。
Fabricated frame beam-column joint pressed by local prestress and used for structural reinforcement and construction method of fabricated frame beam-column joint
一种结构加固用局部预应力压紧的装配式框架梁柱节点及其施工方法
LIU HANG (author) / ZHANG YIHUI (author) / HAN MINGJIE (author) / CUI HONGJIAN (author) / YANG XUEZHONG (author) / WU YUESONG (author) / YANG JIANWEN (author) / LIU YUE (author) / CHANG PINGWEI (author) / LYU WEIWEI (author)
2024-05-28
Patent
Electronic Resource
Chinese
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