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Resilience

Windstorm impact reduction

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Displaying 26 - 50 of 136

Determining Mean Recurrence Intervals for Updated Wind Maps in ASCE 7-16

February 16, 2018

Author(s)

Therese P. McAllister, Naiyu Wang, Bruce Ellingwood

ASCE Standard 7 is moving toward load requirements that are consistent with reliability-based design goals characteristic of performance-based engineering (PBE). As part of this move, reliability analyses were conducted using updated wind data to determine

Second-Order Effects on Wind-Induced Structural Behavior of High-Rise Steel Buildings

December 8, 2017

Author(s)

Sejun Park, Donghun Yeo

This paper investigates P-Δ effects on wind-induced structural dynamic behavior of a 60-story high-rise steel structure known as the CAARC building model. These effects are considered in the structural analysis by using a geometric stiffness method

Analysis of Wind Pressure Data on Components and Cladding of Low-Rise Buildings

December 1, 2017

Author(s)

Dat Duthinh, Joseph A. Main, Matthew L. Gierson, Brian M. Phillips

This paper presents a methodology for analyzing wind pressure data on cladding and components of low-rise buildings. The aerodynamic force acting on a specified area is obtained by summing up pressure time series measured at that areas pressure taps times

Estimating peaks of stationary random processes: a peaks-over-threshold approach

December 1, 2017

Author(s)

Dat Duthinh, Adam L. Pintar, Emil Simiu

Estimating properties of the distribution of the peak of a stationary process from a single finite realization is a problem that arises in a variety of science and engineering applications. Further, it is often the case that the realization is of length T

Evaluation of Wind Pressure Coefficients on Low-Rise Building Enclosures Using Modern Wind Tunnel Data

December 1, 2017

Author(s)

Dat Duthinh, Matthew L. Gierson, Philip N. Bryan, Bilal Ayyub

External pressure coefficients specified in the ASCE 7-10 Standard, used to determine design wind pressures for the components and cladding of buildings, are developed from wind tunnel test data that date back 30 to 50 years. In recent decades, advances in

Vulnerability and Robustness of Civil Infrastructure Systems to Hurricanes

October 10, 2017

Author(s)

Shuoqi Wang, Dorothy Reed

Civil infrastructure systems play an important role in community resilience. Without proper functioning of the infrastructure, especially power delivery, society will not recover quickly from disruptive events, such as hurricanes. In this paper, the

Large Eddy Simulations of Model-Scale Turbulent Atmospheric Boundary Layer Flows

May 8, 2017

Author(s)

Liang Shi, DongHun Yeo

This paper presents large eddy simulations (LES) of model-scaled neutrally stratified atmospheric boundary layer (ABL) flows for structural engineering applications and examines their statistical properties. A one-k-equation eddy model is used for the

PLANETARY BOUNDARY LAYER MODELING AND STANDARD PROVISIONS FOR TALL BUILDING DESIGN

March 31, 2017

Author(s)

Emil Simiu, N. Alan Heckert, DongHun Yeo

According to recent results of Planetary Boundary Layer research relevant to tall building design, for elevations of up to at least 1 km: (i) the longitudinal mean wind speeds are monotonically increasing with height, and (ii) veering angles are negligible

OpenFOAM large-eddy simulations of atmospheric boundary layer turbulence for wind engineering applications

November 29, 2016

Author(s)

Liang Shi, Donghun Yeo

Statistical properties such as the spectral density and spatial coherence of boundary layer turbulence affect bluff body aerodynamics and structural responses. In this report, the open-source toolbox OpenFOAM is employed to perform LES simulations of

A practical verification and validation approach for Computational Wind Engineering simulations using an experimental design technique

November 23, 2016

Author(s)

R?onn Mac R?oinn, DongHun Yeo

Understanding the sensitivity of computational wind engineering (CWE) solutions to simulation parameters facilitates the development of useful solutions. The traditional approach adopted in other fields through verification and validation (V&V) with well

Database-assisted Design and second-order effects on the wind-induced structural behavior of high-rise steel buildings

October 31, 2016

Author(s)

Sejun Park, Donghun Yeo

This work presents an investigation into second-order effects on the wind-induced structural dynamic behavior of high-rise steel structure, as considered within a Database-assisted Design (DAD) context. A geometric stiffness method that accounts for second

Economic Analysis of Restricting Aggregate-Surfaced Roofing Systems in Tornado Prone Areas of the U.S.

September 27, 2016

Author(s)

Joshua D. Kneifel, Marc L. Levitan, Long T. Phan, Thomas Smith, David T. Butry, Douglas S. Thomas

RANS and Hybrid LES/RANS Simulations of Flow over a Square Cylinder

June 11, 2016

Author(s)

Jianghua Ke, DongHun Yeo

Unsteady RANS (URANS) and Hybrid LES/RANS (specifically IDDES) simulations were conducted to numerically investigate the velocity field around, and pressures distribution and forces over a square cylinder immersed in a uniform, steady oncoming flow with