第3章消能减震结构Chapter 3 Seismic Energy-Dissipated Structure3.1消能减震结构概述Overview of Seismic Energy-Dissipated Structure3.2 消能减震结构原理Principles of Seismic Energy-Dissipated Structure3.3消能减震结构体系设计方法Design of Seismic Energy-Dissipated Structure
第3章 消能减震结构 Chapter 3 Seismic Energy-Dissipated Structure 3.1 消能减震结构概述 Overview of Seismic Energy-Dissipated Structure 3.2 消能减震结构原理 Principles of Seismic Energy-Dissipated Structure 3.3 消能减震结构体系设计方法 Design of Seismic Energy-Dissipated Structure
3.1结构消能减震概述Overview of Seismic energy-dissipated structure3.1.1结构消能减震的基本概念Basic concept of energy dissipationEEp-E.Es-E.结构破坏消能装置耗能Es耗能ED(a）地震输入(e）消能减结构(b）传统抗袋结构传统结构Conventionalstructure(3.1.1)Ein=Er+Ep+Es消能减震结构energy-dissipated structure(3.1.2)Ein=Er+Ep+Es+EA
3.1 结构消能减震概述 Overview of Seismic energy-dissipated structure 3.1.1 结构消能减震的基本概念 Basic concept of energy dissipation 传统结构 Conventional structure Ein=ER+ED+ES (3.1.1) 消能减震结构 energy-dissipated structure Ein=ER+ED+ES+EA (3.1.2)
Ein：地震输入的能量；Input energy of earthquakeER：结构地震反应能量，包括动能和势能。seismic response energy of structure including kineticand potential energyEp：结构阻尼消耗的能量。Energydissipatedbystructural dampingEs：结构构件或非结构构件非弹性变形消耗的能量Energy dissipated by inelastic deformation of structuralornon-structuralelementsEA：耗能装置消耗的能量Energy dissipated by supplemental energy-dissipatingdevice
Ein ：地震输入的能量； Input energy of earthquake ER：结构地震反应能量，包括动能和势能。 seismic response energy of structure including kinetic and potential energy ED：结构阻尼消耗的能量。 Energy dissipated by structural damping ES：结构构件或非结构构件非弹性变形消耗的能量 Energy dissipated by inelastic deformation of structural or non-structural elements EA：耗能装置消耗的能量 Energy dissipated by supplemental energy-dissipating device
Ep结构阻尼耗能很小（5%），要使E减小到零，即地震反终止，Es必然很大，即以结构破坏为代价。而减震结构是将地震能量由耗能装置消散。Generally Energy dissipated by structural damping (Ep) islimited about 5 percent. To reduce E to zero, Es must belarge, that is, reducing the structural dynamic responsehave to pay the price of structural damage or destroyWhile in energy-dissipated structures, earthquake energywas consumed by the energy-dissipating devices
ED 结构阻尼耗能很小（5%）,要使 ER 减小到零，即地震反 终止，ES 必然很大，即以结构破坏为代价。而减震结构是将 地震能量由耗能装置消散。 Generally Energy dissipated by structural damping (ED ) is limited about 5 percent. To reduce ER to zero, ES must be large, that is, reducing the structural dynamic response have to pay the price of structural damage or destroy. While in energy-dissipated structures, earthquake energy was consumed by the energy-dissipating devices
energy-dissipated structureBesides the isolation structure, another approach toimprovedearthquakeresponseperformanceanddamage control is that of supplemental dampingsystems, which is called energy-dissipated structuresystem. In these systems, mechanical devices areincorporated in the frame of the structure and dissipateenergy throughout the height of the structure. Themeans by which energy is dissipated is either yielding ofmild steel, sliding friction, motion of a piston within aviscous fluid, orificing of fluid, or viscoelastic action inpolymeric materials
energy-dissipated structure Besides the isolation structure, another approach to improved earthquake response performance and damage control is that of supplemental damping systems, which is called energy-dissipated structure system. In these systems, mechanical devices are incorporated in the frame of the structure and dissipate energy throughout the height of the structure. The means by which energy is dissipated is either yielding of mild steel, sliding friction, motion of a piston within a viscous fluid, orificing of fluid, or viscoelastic action in polymeric materials