Barry Goodno

• Georgia Institute of Technology

This article quantifies the seismic performance of interdependent electric power and telecommunication systems, while also identifying variables with the highest impact on design. We introduce interdependent power and telecommunication models, which probabilistically simulate the physical dependency of telecommunication systems on power via interde...

Rapid seismic vulnerability assessment tools for use with existing structures not only help in quantifying their susceptibility to structural failure, but also aid decision makers with regional portfolio earthquake risk mitigation. Steel moment-frame structures are a common structure type in the United States, and most research to date on their reg...

Electric switchboards are essential pieces of equipment that manage and control the building electrical power system. For the evaluation of seismic vulnerability of electrical equipment, conventional shake table testing or highly detailed finite element models have practical and economical limitations due to the many different configurations of ele...

The earthquake in Haiti was rated as Mw=7.0 resulting in a reported 230,000 deaths and over one million in shelters while a comparable U.S earthquake Loma Prieta Mw=7.1 caused 63 deaths and left about 1000 homeless. Many reports have attributed this disparity to the great economic, social and cultural differences between a third world and a leading...

The focus of this survey was to collect data on the performance of mechanical and electrical systems at selected critical facilities in Haiti. First-hand observations confirmed that nonstructural elements that are well anchored and=or laterally restrained will perform well during a moderate seismic event. However, the investigation also revealed th...

A team of engineers, funded by an NSF RAPID Grant, investigated selected critical electrical equipment, such as switchgear, motor control centers and inverters, at ten sites located in the Port-Au-Prince region that were subjected to strong ground motion during the 12 January 2010 Haiti earthquake. The investigations included a site survey of both...

This paper outlines a decision framework that incorporates state-of-the-art earthquake engineering information and decision maker preferences into multicriteria decision models to support earthquake risk mitigation decisions. Seismic risk analysis of a structure is utilized for probabilistic estimation of the anticipated seismic losses, which in tu...

Unreinforced masonry (URM) is one of the most common structural types for low-rise buildings in the United States. Its dynamic behavior is highly nonlinear, and generally shows high vulnerability to seismic loading. Despite the need for seismic risk assessment of this class of structures, the fragility curves for URM buildings based on analytical m...

An analytical model for dynamic response analysis of low-rise steel frame buildings on microcomputers is described. The model consists of an assemblage of planar frames with either braced or moment resisting connections. All but the frame lateral degrees of freedom are removed using static condensation prior to assemblage of the overall model. Floo...

Seismic fragility plays an essential role in the estimation of potential earthquake losses to a building. Its probabilistic framework allows the damage assessment to take into account uncertainties in earthquake hazard as well as in building properties. However, the relationship between building damage, earthquake loads, and structural characterist...

Continuous functionality of critical infrastructure systems is essential to support the social and economic organization of productive sectors within a country. Electric power, potable water, natural gas, telecommunications, and transportation are examples of these critical systems, whose nature makes them suitable for network analysis. This study...

This study examined the application of passive energy dissipation systems for response modification of essential facilities in the Mid-America region. Essential facilities are defined as buildings that support functions related to post-earthquake emergency response and disaster management. For such buildings simply insuring life safety and preventi...

During the last decade, critical infrastructure systems such as electric power, water distribution, transportation and telecommunications have been stressed by significant natural hazards and human errors leading to malfunction. Earthquakes, blackouts and satellite failures have evidenced the vulnerability of these growing networked systems threate...

This paper describes a sensitivity study of the potentially significant parameters which influence seismic response of L-shape concrete moment resisting frame (LCMF) structures in Memphis, TN located in the Central United States. The sensitivity study is necessary to efficiently perform regional seismic assessments of LCMF structures using fragilit...

Most research to date on estimation of building fragility has focused on statistical extrapolation of results for selected individual structures. In this study the characteristics of structures in a target inventory are used to estimate fragilities. Consideration is restricted to the class of building structures consisting of mid-rise (5 story) L-s...

Much attention has been given to seismic risk assessment of existing building structures to identify vulnerable structures in order to reduce seismic risk to an acceptable level. There are a variety of intervention measures available to building owners for reducing seismic risk, ranging from targeted seismic rehabilitation to complete reconstructio...

Reliable seismic damage control can be achieved by base isolation systems and/or passive energy dissipation (PED) devices, such as ductile cladding connections. While either of these approaches alone is capable of reducing seismic response to acceptable levels, it is reasonable to examine whether a combination of these techniques might be more effe...

Consequence-Based Engineering (CBE) is a new paradigm proposed by the Mid-America Earthquake Center (MAE) to guide evaluation and rehabilitation of building structures and networks in areas of low probability - high consequence earthquakes such as the central region of the U.S. The principal objective of CBE is to minimize consequences by prescribi...

Passive energy dissipation devices have been successfully implemented in buildings around the world to reduce structural response, primarily due to earthquakes, but also for wind and other dynamic loading conditions. The basic objective in using passive energy dissipation devices is to try to concentrate as much of the energy dissipation as possibl...

This chapter describes analytical investigations of hybrid control systems for buildings designed to combine passive damping provided by cladding-structure interaction with robust active control systems. Hybrid passive–active systems for controlling building seismic response offer combines the best features of each to achieve superior performance....

This paper summarizes experience with the design of robust active control systems employed together with passive control elements in a hybrid system to control the seismic response of buildings. Particular interest is directed to applying an iterative redesign method that first designs the passive control elements using numerical optimization. The...

Properly designed precast concrete cladding could potentially provide lateral stiffness, ductility, and energy dissipation for an overall building structure, especially during earthquakes. This paper describes a set of advanced connections that take advantage of the interaction between facade panels and structure (mainly due to horizontal interstor...

Hybrid passive-active systems for controlling building seismic response offer the promise of combining the best features of each to achieve superior performance. Analytical investigations of building hybrid control systems designed to combine robust active control systems with passive damping provided by structural hysteresis are described. The pas...

Advanced cladding connections take advantage of the interaction between architectural cladding panels and the building structure to dissipate energy. At the same time, like other passive dissipators, they provide additional lateral stiffness to the structure. A design criterion formulated in terms of energy provides the optimal balance of stiffness...

Robust control methods are used to design a hybrid control system that includes an active tensioning (bracing) system and a passive control system consisting of rigid cladding panels connected to the building with ductile (hysteretic) connection elements. Mu-synthesis control design methods are shown to yield controllers that remain stable and effe...

Ductile cladding connections take advantage of the cladding-structure interaction during an earthquake to dissipate energy. An experimental test program studied the behavior of the different components of a connection system. Analytical models of the connection were incorporated into a 2D model of a six story building with cladding. Time histories...

A ductile cladding connection is a special connecting device between a facade cladding panel and a building structure that is designed to dissipate energy when subjected to an earthquake. The effect of such a device is to reduce the overall seismic response of the structure. A special testing machine was designed to test the behavior of these advan...

These studies, prepared for the International Symposium on Building Technology and Earthquake Hazard Mitigation, held in Kunming, PRC, demonstrate the importance of including all major building components in computer analysis aimed at the realistic portrayal of overall building seismic response. Ces études, préparés pour le symposium international...

A large number (over half) of those commercial buildings receiving some sort of structural or envelope damage during an earthquake can expect some glass damage. Approximately one-quarter of these buildings can expect serious glass damage. Those buildings experiencing larger amounts of drift or displacement (more flexible buildings) received three t...

This research program is aimed at acquiring much-needed data on performance of nonstructural building elements in a recent major earthquake. The primary objective of this study is to develop a functional understanding of the role played by nonstructural cladding elements in the structural performance of buildings under severe ground motion conditio...

Issued as Final project report, Project no. E-20-G09 (includes subproject no. E-16-645/Craig/AE)

Four different analytical models are presented for architectural precast cladding on highrise buildings. An interstory shear stiffness model, an incremental failure model, a hysteresis model and a slotted connection model were used to study cladding performance from the linear elastic range up to failure. The models were added to a finite element m...

Interdependent infrastructures constitute one of the most visible examples of contemporary complex networks. These networks are formed by coupling different independent networks (e.g., power grid, water distribution, gas transmission, transportation, emergency response buildings, etc.). These interdependent systems must remain functional after natu...

Seismic vulnerability of building structures can be reduced with appropriate rehabilitation schemes. However, decisions on rehabilitation of structures can depend on multiple conflicting criteria such as cost, life loss, functionality, etc. In this study, a framework is developed to support decisions on seismic structural rehabilitation. Three mult...

Estimation of structural responses of an ensemble of buildings is limited by the large amount of computational power required to run nonlinear time history analyses for structures of the building stock. In addition, lack of inventory data at regional levels prevents an adequate characterization of the built environment. Therefore, this study outlin...

This research presents an alternative means of calculating vulnerability relations for buildings. Simulation-based fragility curves generated using a Monte Carlo simulation are usually not practical because of the large number of time-consuming analyses needed to obtain reliable statistics of the outcomes. This research implements a response surfac...

Reliable seismic damage control can be achieved by base isolation systems and/or passive energy dissipation (PED) devices. Base isolation reduces the seismic response of the structure by "decoupling" the building from the ground for certain frequency ranges using structural elements with low horizontal stiffness. PED devices such as advanced ductil...

Issued as final report

Issued as final report

Issued as final report

Issued as final report University of Illinois

This project examined the behavior of nonstructural components present in essential facilities in Mid-America. School buildings were chosen for detailed studies because of the vulnerability of their occupants and the importance of these particular facilities to post earthquake emergency response. An inventory of nonstructural components was made fo...

This report describes the results of research to develop a way to rapidly assess the fragility of structures and geostructures over a specified region. Structural performance under future earthquakes cannot be predicted with certainty. This is primarily due to the fact that an earthquake is a random phenomenon in nature, but another source of uncer...

Issued as Final report, Project no. E-20-638 (includes subproject no. E-16-A01/Craig/Goodno)

Issued as Annual progress report, Final project report, and Final report, Project no. E-20-629 (co-project is E-16-649/Craig/School of Aerospace Engineering) Final report has title: Cladding--structure interaction in highrise buildings

Issued as Annual report, and Final report, Project no. E-20-668