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A platform for research: civil engineering, architecture and urbanism
Self-resetting gradient anti-seismic long and thin steel tube concrete latticed column
The invention discloses a self-resetting gradient anti-seismic long and thin concrete-filled steel tube latticed column which comprises a concrete-filled steel tube column limb, energy dissipation lacing tubes and self-resetting lacing tubes, the energy dissipation lacing tubes and the self-resetting lacing tubes are alternately and evenly arranged layer by layer in the column height direction and welded to the column limb in a penetration welding mode, the energy dissipation lacing tubes are high-ductility low-yield-point steel tubes, and the self-resetting lacing tubes are high-ductility low-yield-point steel tubes. The self-resetting lacing pipe comprises a left sleeve, a right sleeve, a resetting plate spring assembly and a metal hose. The reset plate spring assembly is provided with reset force through two spring steel plates, and the two ends of the reset plate spring assembly are fixed in the left sleeve and the right sleeve through cushion blocks, positioning screws and squeezing devices. According to an anti-seismic performance design method and performance targets of the column limbs, the energy-consuming lacing tubes and the self-resetting lacing tubes, a continuous medium method is adopted to obtain internal forces of all components under different level earthquake effects, the bearing capacity and the deformation capacity of the components are designed, and a gradient failure mode of the latticed column under the earthquake effect is achieved. By means of plastic deformation energy dissipation of the energy dissipation lacing pipes, protection is formed on column limbs, residual deformation after an earthquake is eliminated through the self-resetting lacing pipes, the problem that the anti-seismic toughness of the long and thin steel pipe concrete latticed columns is insufficient during the earthquake can be solved, the overhead height of the corridor can be remarkably increased, and the number of supporting columns below the corridor can be reduced.
本发明公开了一种自复位梯度抗震细长钢管混凝土格构柱，包括钢管混凝土柱肢、耗能缀管和自复位缀管，耗能缀管和自复位缀管沿柱高方向逐层交替均匀布置，采用相贯焊与柱肢焊接，耗能缀管为高延性低屈服点钢管，自复位缀管包括左套管、右套管、复位板簧组件和金属软管组成。复位板簧组件由两块弹簧钢板提供复位力，两端通过垫块、定位螺杆、挤紧装置固定在左套管和右套管内。按照抗震性能化设计方法，根据柱肢、耗能缀管、自复位缀管各自的性能目标，采用连续介质法得到各构件不同水准地震作用下的内力，并对其承载力和变形能力进行设计，实现格构柱在地震作用下的梯度失效模式。通过耗能缀管塑性变形耗能，对柱肢形成保护，通过自复位缀管消除地震后的残余变形，可解决细长钢管混凝土格构柱地震时抗震韧性不足的问题，可显著提高连廊架空高度并减少连廊下方支承柱的数量。
Self-resetting gradient anti-seismic long and thin steel tube concrete latticed column
The invention discloses a self-resetting gradient anti-seismic long and thin concrete-filled steel tube latticed column which comprises a concrete-filled steel tube column limb, energy dissipation lacing tubes and self-resetting lacing tubes, the energy dissipation lacing tubes and the self-resetting lacing tubes are alternately and evenly arranged layer by layer in the column height direction and welded to the column limb in a penetration welding mode, the energy dissipation lacing tubes are high-ductility low-yield-point steel tubes, and the self-resetting lacing tubes are high-ductility low-yield-point steel tubes. The self-resetting lacing pipe comprises a left sleeve, a right sleeve, a resetting plate spring assembly and a metal hose. The reset plate spring assembly is provided with reset force through two spring steel plates, and the two ends of the reset plate spring assembly are fixed in the left sleeve and the right sleeve through cushion blocks, positioning screws and squeezing devices. According to an anti-seismic performance design method and performance targets of the column limbs, the energy-consuming lacing tubes and the self-resetting lacing tubes, a continuous medium method is adopted to obtain internal forces of all components under different level earthquake effects, the bearing capacity and the deformation capacity of the components are designed, and a gradient failure mode of the latticed column under the earthquake effect is achieved. By means of plastic deformation energy dissipation of the energy dissipation lacing pipes, protection is formed on column limbs, residual deformation after an earthquake is eliminated through the self-resetting lacing pipes, the problem that the anti-seismic toughness of the long and thin steel pipe concrete latticed columns is insufficient during the earthquake can be solved, the overhead height of the corridor can be remarkably increased, and the number of supporting columns below the corridor can be reduced.
本发明公开了一种自复位梯度抗震细长钢管混凝土格构柱，包括钢管混凝土柱肢、耗能缀管和自复位缀管，耗能缀管和自复位缀管沿柱高方向逐层交替均匀布置，采用相贯焊与柱肢焊接，耗能缀管为高延性低屈服点钢管，自复位缀管包括左套管、右套管、复位板簧组件和金属软管组成。复位板簧组件由两块弹簧钢板提供复位力，两端通过垫块、定位螺杆、挤紧装置固定在左套管和右套管内。按照抗震性能化设计方法，根据柱肢、耗能缀管、自复位缀管各自的性能目标，采用连续介质法得到各构件不同水准地震作用下的内力，并对其承载力和变形能力进行设计，实现格构柱在地震作用下的梯度失效模式。通过耗能缀管塑性变形耗能，对柱肢形成保护，通过自复位缀管消除地震后的残余变形，可解决细长钢管混凝土格构柱地震时抗震韧性不足的问题，可显著提高连廊架空高度并减少连廊下方支承柱的数量。
Self-resetting gradient anti-seismic long and thin steel tube concrete latticed column
一种自复位梯度抗震细长钢管混凝土格构柱
HAN CHONGQING (author) / FANG NENGXIN (author) / ZHOU GUANGRU (author) / SUN XUN (author)
2024-05-10
Patent
Electronic Resource
Chinese
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