摩擦-SMA弹簧复合耗能支撑在周边支承单层球面网壳结构中的减震效应研究

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (4) : 99-109.

论文

庄鹏1, 2 ,3，王文婷1，韩淼1, 2, 3，薛素铎4

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Seismic control effect of friction-SMA spring hybrid energy dissipation braces in single-layer spherical lattice shell with surrounding columns

ZHUANG Peng1, 2, 3, WANG Wenting1, HAN Miao1, 2, 3 , XUE Suduo4

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文章历史 +

摘要

提出了一种新型摩擦-SMA弹簧复合耗能装置（Friction-SMA spring Device，FSD），该阻尼装置由大尺寸超弹性SMA螺旋弹簧装置和摩擦耗能装置。基于SMA装置和摩擦装置的力学模型，建立了FSD的恢复力模型。将FSD用于周边支承单层球面网壳结构的耗能支撑（Friction-SMA spring Brace，FSB）。采用ABAQUS软件建立了整体结构的有限元模型，对其进行了多维地震作用下的动力弹塑性分析，对比分析了受控结构与无控结构中屋盖和下部框架的位移响应、加速度响应、等效塑形应变和能量响应。研究结果表明：设置于网壳屋盖下部结构中的FSB在强震作用下可提供饱满的滞回环，有利于发挥耗能作用；强震作用下受控结构主要通过FSB进行耗能，可有效减轻主体结构的塑形发展和地震损伤；FSB对网壳屋盖及其支承结构在水平方向的减震效果优于竖向减震效果。

Abstract

A new type of hybrid energy dissipation device termed as friction-shape memory alloy (SMA) spring device (FSD) is presented in this investigation. This hybrid device consists of friction component and large-scale superelastic SMA helical springs. Based on the mechanical models of SMA spring and frictional force model, a restoring force model for the FSD is developed. The proposed FSD devices are used as energy dissipation brace (Friction-SMA spring Brace, FSB) for seismic control of a single-layer spherical lattice shell with surrounding columns. By using the ABAQUS software, the FE model of the complete structure is established and the dynamic elasto-plastic analysis under multi-dimensional seismic excitations is carried out. The displacement response, acceleration response, equivalent plastic strain and energy response of the roof and the supporting structure in the controlled and uncontrolled lattice shells are compared and analyzed. The results indicate that the FSB devices in the substructure of the lattice shell roof provide full hysteresis loops that benefit for energy dissipation. Under strong earthquakes, the energy dissipation of the controlled structure mainly depends on the SFB, which reduces plastic development and seismic damage. In addition, the FSB devices exhibit superior seismic control effect of the horizontal response to that of the vertical response of the lattice shell roof and its supporting structure.

导出引用

庄鹏1, 2,3，王文婷1，韩淼1, 2, 3，薛素铎4. 摩擦-SMA弹簧复合耗能支撑在周边支承单层球面网壳结构中的减震效应研究[J]. 振动与冲击, 2018, 37(4): 99-109

ZHUANG Peng1, 2, 3, WANG Wenting1, HAN Miao1, 2, 3,XUE Suduo4. Seismic control effect of friction-SMA spring hybrid energy dissipation braces in single-layer spherical lattice shell with surrounding columns[J]. Journal of Vibration and Shock, 2018, 37(4): 99-109

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