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A platform for research: civil engineering, architecture and urbanism
Prestressed variable-stiffness three-dimensional seismic isolation support
The invention relates to a prestressed variable-stiffness three-dimensional seismic isolation support, and belongs to the field of seismic absorption and isolation of structural engineering. On the basis of a common rubber seismic isolation support, the tensile deformation capacity of the support is enhanced through vertical seams, prestress is applied through nuts, the rubber layer is pulled, meanwhile, springs are pressed, and therefore the prestress variable-rigidity three-dimensional seismic isolation support is formed. According to the prestressed variable-stiffness three-dimensional seismic isolation support, on the basis of the common rubber seismic isolation support, the tensile deformation capacity of the rubber seismic isolation support is enhanced through the vertical seams, then self-balancing pre-tensioning and pre-pressing deformation is applied, the vertical rigidity of the seismic isolation support is mainly controlled by the springs, and when vertical deformation after seismic isolation is larger than pre-tensioning deformation, the vertical rigidity is controlled by the sum of the vertical compression rigidity of the rubber layer and the spring rigidity, so that the variable rigidity characteristic is realized; and meanwhile, vertical seismic isolation does not affect the horizontal seismic isolation effect of the rubber layer, and therefore the three-direction seismic isolation effect is achieved. The prestressed variable-stiffness three-dimensional seismic isolation support does not increase the material cost, is simple in structure, clear in mechanical property parameter and convenient to implement, and can be widely applied to three-dimensional seismic isolation analysis and design of structures.
一种预应力变刚度三维隔震支座，属于结构工程减隔震领域。通过在普通橡胶隔震支座基础上通过竖缝增强其自身受拉变形能力后，并通过螺帽施加预应力，使得橡胶层受拉同时弹簧受压从而形成一种预应力变刚度三维隔震支座。本发明通过在普通橡胶隔震支座基础上通过竖缝增强其自身受拉变形能力后，施加自平衡的预拉预压变形，隔震支座的竖向刚度主要由弹簧来控制，当隔震后的竖向变形大于预拉变形时，竖向刚度则由橡胶层的竖向压缩刚度以及弹簧刚度之和来控制，从而实现变刚度特性。同时竖向隔震不影响橡胶层的水平向隔震效果，从而实现三向隔震效果。本发明不增加材料成本，构造简单，力学性能参数明确，并且实施方便，可广泛应用于结构的三维隔震分析与设计。
Prestressed variable-stiffness three-dimensional seismic isolation support
The invention relates to a prestressed variable-stiffness three-dimensional seismic isolation support, and belongs to the field of seismic absorption and isolation of structural engineering. On the basis of a common rubber seismic isolation support, the tensile deformation capacity of the support is enhanced through vertical seams, prestress is applied through nuts, the rubber layer is pulled, meanwhile, springs are pressed, and therefore the prestress variable-rigidity three-dimensional seismic isolation support is formed. According to the prestressed variable-stiffness three-dimensional seismic isolation support, on the basis of the common rubber seismic isolation support, the tensile deformation capacity of the rubber seismic isolation support is enhanced through the vertical seams, then self-balancing pre-tensioning and pre-pressing deformation is applied, the vertical rigidity of the seismic isolation support is mainly controlled by the springs, and when vertical deformation after seismic isolation is larger than pre-tensioning deformation, the vertical rigidity is controlled by the sum of the vertical compression rigidity of the rubber layer and the spring rigidity, so that the variable rigidity characteristic is realized; and meanwhile, vertical seismic isolation does not affect the horizontal seismic isolation effect of the rubber layer, and therefore the three-direction seismic isolation effect is achieved. The prestressed variable-stiffness three-dimensional seismic isolation support does not increase the material cost, is simple in structure, clear in mechanical property parameter and convenient to implement, and can be widely applied to three-dimensional seismic isolation analysis and design of structures.
一种预应力变刚度三维隔震支座，属于结构工程减隔震领域。通过在普通橡胶隔震支座基础上通过竖缝增强其自身受拉变形能力后，并通过螺帽施加预应力，使得橡胶层受拉同时弹簧受压从而形成一种预应力变刚度三维隔震支座。本发明通过在普通橡胶隔震支座基础上通过竖缝增强其自身受拉变形能力后，施加自平衡的预拉预压变形，隔震支座的竖向刚度主要由弹簧来控制，当隔震后的竖向变形大于预拉变形时，竖向刚度则由橡胶层的竖向压缩刚度以及弹簧刚度之和来控制，从而实现变刚度特性。同时竖向隔震不影响橡胶层的水平向隔震效果，从而实现三向隔震效果。本发明不增加材料成本，构造简单，力学性能参数明确，并且实施方便，可广泛应用于结构的三维隔震分析与设计。
Prestressed variable-stiffness three-dimensional seismic isolation support
一种预应力变刚度三维隔震支座
CHEN SHICAI (author) / DUO FEI (author) / ZHANG SHIJIE (author)
2021-07-23
Patent
Electronic Resource
Chinese
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