Risk-Based Seismic Design Optimization of Steel Building Systems with Passive Damping Devices

RISK-BASED SEISMIC DESIGN OPTIMIZATION OF STEEL BUILDING SYSTEMS WITH PASSIVE DAMPING DEVICES Junshan Liu, B.S., M.S. Marquette University, 2010 Nonlinear time history analysis software and an optimization algorithm for automating design of steel frame buildings with and without supplemental passive damping systems using the riskor performance-based seismic design philosophy are developed in this dissertation. The software package developed is suitable for conducting dynamic analysis of 2D steel framed structures modeled as shear buildings with linear/nonlinear viscous and viscoelastic dampers. Both single degree of freedom (SDOF) and multiple degree of freedom (multistory or MDOF) shear-building systems are considered to validate the nonlinear analysis engine developed. The response of both undamped and damped structures using the 1940 EI Centro (Imperial Valley) ground motion record and sinusoidal ground motion input are used in the validation. Comparison of response simulations is made with the OpenSEES software system and analytical models based upon established dynamic analysis theory. A risk-based design optimization approach is described and formulation of unconstrained multiple objective design optimization problem statements suitable for this design philosophy are formulated. Solution to these optimization problems using a genetic algorithm are discussed and a prototypical three story, four bay shear-building structure is used to demonstrate applicability of the proposed risk-based design optimization approach for design of moderately sized steel frames with and without supplemental damping components. All programs are developed in MATLAB environment and run on Windows XP operating system. A personal computer cluster with four computational nodes is set up to reduce the computing time and a description of implementation of the automated design algorithm in a cluster computing environment is provided. The prototype building structure is used to demonstrate the impact that the number of design variables has on the resulting designs and to demonstrate the impact that use of supplemental viscous and viscoelastic damping devices have on minimizing initial construction cost and minimizing expected annual loss due to seismic hazard.

[1]  Farzin Zareian,et al.  Why and how to predict the probability of collapse of buildings , 2006 .

[2]  N. Wongprasert,et al.  Application of a genetic algorithm for optimal damper distribution within the nonlinear seismic benchmark building , 2004 .

[3]  Christopher M. Foley,et al.  Automated Design of Steel Frames Using Advanced Analysis and Object-Oriented Evolutionary Computation , 2003 .

[4]  Diego Lo´pez Garci´a.  A Simple Method for the Design of Optimal Damper Configurations in MDOF Structures , 2001 .

[5]  Anil K. Chopra,et al.  Dynamics of Structures: Theory and Applications to Earthquake Engineering , 1995 .

[6]  T. T. Soong,et al.  Seismic Design of Viscoelastic Dampers for Structural Applications , 1992 .

[7]  Christopher M. Foley,et al.  Parallel processing in the elastic nonlinear analysis of high-rise frameworks , 1994 .

[8]  J. N. Yang,et al.  Optimal Placement of Passive Dampers on Seismic and Wind-Excited Buildings using Combinatorial Optimization , 1999 .

[9]  Shahram Pezeshk,et al.  Optimized Design of Two-Dimensional Structures Using a Genetic Algorithm , 1998 .

[10]  Mahendra P. Singh,et al.  Optimal placement of dampers for passive response control , 2002 .

[11]  Andrei M. Reinhorn,et al.  Design of Supplemental Dampers for Control of Structures , 1996 .

[12]  Manolis Papadrakakis,et al.  Performance-based multiobjective optimum design of steel structures considering life-cycle cost , 2006 .

[13]  Johnny Sun,et al.  Development of Ground Motion Time Histories for Phase 2 of the FEMA/SAC Steel Project , 1997 .

[14]  T. T. Soong,et al.  Seismic response of steel frame structures with added viscoelastic dampers , 1989 .

[15]  Christopher M. Foley,et al.  Optimized Design of Partially and Fully-Restrained Steel Frames Using Distributed Plasticity , 2001 .

[16]  Ronald O. Hamburger,et al.  THE ATC-58 PROJECT: DEVELOPMENT OF NEXT- GENERATION PERFORMANCE-BASED EARTHQUAKE ENGINEERING DESIGN CRITERIA FOR BUILDINGS , 2006 .

[17]  Jack P. Moehle,et al.  A framework methodology for performance-based earthquake engineering , 2004 .

[18]  Shahram Pezeshk.  How to Optimize Frames Using Plastic Design Concept , 1994 .

[19]  Shahram Pezeshk,et al.  Design of Framed Structures Using a Genetic Algorithm , 1997 .

[20]  Daniel Schinler.  An Object-Oriented Evolutionary Algorithm for Automated Advanced Analysis Based Design , 2001 .

[21]  Parviz Mahmoodi,et al.  Performance of Viscoelastic Structural Dampers for the Columbia Center Building , 1986 .

[22]  Eduardo Miranda,et al.  Probabilistic Response Assessment for Building-Specific Loss Estimation , 2003 .

[23]  Manolis Papadrakakis,et al.  Structural optimization: A tool for evaluating seismic design procedures , 2006 .

[24]  T. T. Soong,et al.  An experimental study on seismic behaviour of viscoelastically damped structures , 1991 .

[25]  Anita Shukla,et al.  Optimal Use of Viscoelastic Dampers in Building Frames for Seismic Force , 1999 .

[26]  Christopher M. Foley,et al.  Inelastic analysis of partially restrained unbraced steel frames , 1997 .

[27]  Shahram Pezeshk,et al.  Design of Nonlinear Framed Structures Using Genetic Optimization , 2000 .

[28]  Jerome J. Connor,et al.  A framework for performance-based design , 1993 .

[29]  Nathan M. Newmark,et al.  A Method of Computation for Structural Dynamics , 1959 .