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Arch type variable rigidity energy dissipation and seismic mitigation underground structure and construction method
The invention provides an arch type variable rigidity energy dissipation and seismic mitigation underground structure and a construction method and belongs to the technical field of underground structure seismic mitigation. The structure comprises an arch door type framework, an active variable rigidity device, a high damping rubber partition layer and an anchor cable. The arch door type frameworkcomprises a stand column, a continuous beam, a steel pipe arch, an arch upper supporting column, a rigid cushion block, a fixed pulley and a sensor. The active variable rigidity device comprises a square outer cylinder, a rectangular sliding block, a shape memory alloy wire and a rope tightening device. The top face of the rigid cushion block is aligned to the shape center of the bottom face of the square outer cylinder. A gap between the stand column and a soil body is filled with the high damping rubber partition layer. One end of the anchor cable penetrates through the fixed pulley and isconnected with the arch upper supporting column and the rope tightening device in a welded manner, and the other end of the anchor cable penetrates through the stand column and the high damping rubberpartition layer to be anchored in the soil layer stably. The martensite phase change shape memory effect of the shape memory alloy is utilized, the structure works together with the high damping rubber partition layer, rigidity is added to the framework structure actively, resonance between the underground structure and the soil body is avoided, and thus the underground structure has good seismicmitigation performance.
一种拱式变刚度耗能减震地下结构及施工方法，属于地下结构减震技术领域。结构包括含拱门式框架、主动变刚度装置、高阻尼橡胶隔层和锚索；含拱门式框架包括立柱、连续梁、钢管拱、拱上支撑柱、刚性垫块、定滑轮和传感器；主动变刚度装置包括方形外筒、矩形滑动块、形状记忆合金丝和紧绳器；刚性垫块顶面与方形外筒底面形心对准并焊接，立柱与土体之间的空隙填充高阻尼橡胶隔层，锚索一端穿过定滑轮和拱上支撑柱与紧绳器焊接连接，另一端穿过立柱和高阻尼橡胶隔层锚固于稳定土层中。利用形状记忆合金马氏体相变形状记忆效应，并与高阻尼橡胶隔层共同工作，主动给框架结构附加了刚度，避免了地下结构与土体发生共振，使地下结构具有较好抗震性能。
Arch type variable rigidity energy dissipation and seismic mitigation underground structure and construction method
The invention provides an arch type variable rigidity energy dissipation and seismic mitigation underground structure and a construction method and belongs to the technical field of underground structure seismic mitigation. The structure comprises an arch door type framework, an active variable rigidity device, a high damping rubber partition layer and an anchor cable. The arch door type frameworkcomprises a stand column, a continuous beam, a steel pipe arch, an arch upper supporting column, a rigid cushion block, a fixed pulley and a sensor. The active variable rigidity device comprises a square outer cylinder, a rectangular sliding block, a shape memory alloy wire and a rope tightening device. The top face of the rigid cushion block is aligned to the shape center of the bottom face of the square outer cylinder. A gap between the stand column and a soil body is filled with the high damping rubber partition layer. One end of the anchor cable penetrates through the fixed pulley and isconnected with the arch upper supporting column and the rope tightening device in a welded manner, and the other end of the anchor cable penetrates through the stand column and the high damping rubberpartition layer to be anchored in the soil layer stably. The martensite phase change shape memory effect of the shape memory alloy is utilized, the structure works together with the high damping rubber partition layer, rigidity is added to the framework structure actively, resonance between the underground structure and the soil body is avoided, and thus the underground structure has good seismicmitigation performance.
一种拱式变刚度耗能减震地下结构及施工方法，属于地下结构减震技术领域。结构包括含拱门式框架、主动变刚度装置、高阻尼橡胶隔层和锚索；含拱门式框架包括立柱、连续梁、钢管拱、拱上支撑柱、刚性垫块、定滑轮和传感器；主动变刚度装置包括方形外筒、矩形滑动块、形状记忆合金丝和紧绳器；刚性垫块顶面与方形外筒底面形心对准并焊接，立柱与土体之间的空隙填充高阻尼橡胶隔层，锚索一端穿过定滑轮和拱上支撑柱与紧绳器焊接连接，另一端穿过立柱和高阻尼橡胶隔层锚固于稳定土层中。利用形状记忆合金马氏体相变形状记忆效应，并与高阻尼橡胶隔层共同工作，主动给框架结构附加了刚度，避免了地下结构与土体发生共振，使地下结构具有较好抗震性能。
Arch type variable rigidity energy dissipation and seismic mitigation underground structure and construction method
一种拱式变刚度耗能减震地下结构及施工方法
DONG JIANHUA (author) / WU XIAOLEI (author) / XIE YONGBIN (author) / SHI LIJUN (author) / YANG XIAOYU (author) / REN XIN (author)
2020-04-10
Patent
Electronic Resource
Chinese
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