位移型阻尼器出平面力学特性对消能减震效果影响之探讨
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摘要
自从消能减震技术开始研究发展以来,除了隔震器以外,一般将阻尼器都视为单方向的消能,亦即沿着框架的平面方向消能。由于应用平面框架的概念,对于阻尼器出平面的方向皆视为不受地震力作用而忽视阻尼器出平面的力学特性。然而,由于建筑结构体系的复杂及不规则以及应用平面框架理论有其条件的限制,目前的建筑结构大部分已经不再适用平面框架的理论,因此可想而知,阻尼器出平面方向的力学特性对于消能减震结构在地震作用下的行为会有所影响,对于阻尼器在地震作用下的非线性行为亦会造成影响。本文主要探讨有关位移型阻尼器出平面方向的力学特性对位移型阻尼器的消能减震效果所造成的影响,并探讨在考虑位移型阻尼器双方向力学特性下,加装位移型阻尼器的消能减震结构在地震作用下的非线性行为,并与过去只考虑位移型阻尼器单向消能的情况做比较,以了解在实际的消能减震结构的消能减震设计上,考虑位移型阻尼器双方向力学特性的重要性及其必要性。
Since the development of seismic isolation and energy dissipation technology,except for seismic isolators,the dampers are generally considered that they can only take effects in single direction i.e.along the in-plane direction of frame.Owing to this concept,the dynamic characteristic in out-plane direction of dampers is neglected.However,most structures are no more suitable for applying the theory of plane frame due to the complexity of structure systems and the limits of applying said theory.Hence,the dynamic characteristic of dampers in out-plane direction can affect not only the behavior of damped frame but the nonlinear behavior of dampers under earthquakes.This paper mainly discusses how the dynamic characteristic in out-plane direction of displacement-dependent dampers influences the energy dissipation effect and the nonlinear behavior of damped frame with displacement-dependent dampers while considering the dynamic characteristic in dual directions of dampers.This paper shows a comparison in energy dissipation effects of displacement-dependent dampers between single direction consideration and dual direction consideration.The result enables us to understand the importance and necessity of considering the dynamic characteristic in dual direction of displacement-dependent dampers while designing the damped frame.
Since the development of seismic isolation and energy dissipation technology,except for seismic isolators,the dampers are generally considered that they can only take effects in single direction i.e.along the in-plane direction of frame.Owing to this concept,the dynamic characteristic in out-plane direction of dampers is neglected.However,most structures are no more suitable for applying the theory of plane frame due to the complexity of structure systems and the limits of applying said theory.Hence,the dynamic characteristic of dampers in out-plane direction can affect not only the behavior of damped frame but the nonlinear behavior of dampers under earthquakes.This paper mainly discusses how the dynamic characteristic in out-plane direction of displacement-dependent dampers influences the energy dissipation effect and the nonlinear behavior of damped frame with displacement-dependent dampers while considering the dynamic characteristic in dual directions of dampers.This paper shows a comparison in energy dissipation effects of displacement-dependent dampers between single direction consideration and dual direction consideration.The result enables us to understand the importance and necessity of considering the dynamic characteristic in dual direction of displacement-dependent dampers while designing the damped frame.
引文
[1]周云.金属耗能减震结构设计[M].武汉:武汉理工大学出版社,2006.
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[3]王亚勇,戴国莹.建筑抗震设计规范算例[M].北京:中国建筑工业出版社,2006.
[4]陈清祥,潘琪,吕西林,胡克旭.等值线性分析方法于消能减震加固技术上的应用探讨[J].结构工程师,2005(增刊):383-388.
[5]张国镇,黄震兴,苏晴茂,李森枏.结构消能减震控制及隔震设计[M].北京:全华科技图书股份有限公司,2005.
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[3]王亚勇,戴国莹.建筑抗震设计规范算例[M].北京:中国建筑工业出版社,2006.
[4]陈清祥,潘琪,吕西林,胡克旭.等值线性分析方法于消能减震加固技术上的应用探讨[J].结构工程师,2005(增刊):383-388.
[5]张国镇,黄震兴,苏晴茂,李森枏.结构消能减震控制及隔震设计[M].北京:全华科技图书股份有限公司,2005.
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