- Probabilistic and Robust Engineering Design
- Geotechnical Engineering and Analysis
- Geotechnical Engineering and Soil Mechanics
- Structural Health Monitoring Techniques
- Seismic Performance and Analysis
- Structural Response to Dynamic Loads
- Geotechnical Engineering and Soil Stabilization
- Geotechnical Engineering and Underground Structures
- Geophysical Methods and Applications
- Seismology and Earthquake Studies
- Asphalt Pavement Performance Evaluation
- Infrastructure Maintenance and Monitoring
- Infrastructure Resilience and Vulnerability Analysis
- Soil and Unsaturated Flow
- Masonry and Concrete Structural Analysis
- Scientific Research and Discoveries
- Innovative concrete reinforcement materials
- Soil Geostatistics and Mapping
- Advanced Multi-Objective Optimization Algorithms
- Wind and Air Flow Studies
- Concrete Corrosion and Durability
- Disaster Management and Resilience
- earthquake and tectonic studies
- Evolutionary Algorithms and Applications
- Advanced Frequency and Time Standards
University at Buffalo, State University of New York
2015-2022
Buffalo State University
2016
University of Akron
2010-2013
University of California, Davis
2004-2010
Union University
2010
Kocaeli Üniversitesi
2010
Middle East Technical University
2010
University of California System
2007
University of Maine
2004
Waste Management (United States)
2004
After a brief overview of how the dimensionless resilience index has been calculated in past for buildings, and some shortcomings that approach, use deficit is advocated to overcome these shortcomings. An example provided pros cons each approach are discussed, with broad recommendations applicable quantification building resilience.
This study evaluates the economic viability of allowing for controlled inelastic deformation special moment–resisting buildings during wind storms. is achieved through a set case studies involving steel varying heights made frames located in three different cities United States, with intensity levels and seismic hazards. The evaluation procedure utilizes latest developments field performance-based earthquake engineering but multihazard context. By comparing capital costs expected life-cycle...
Self-centering concentrically braced frame (SC-CBF) systems have been developed to increase the drift capacity of conventional (CBF) prior damage reduce postearthquake damages. However, due special details required by SC-CBF system, construction cost a is expected be higher than that CBF. Although recent experimental research has shown better seismic performance subjected design-basis earthquakes, benefit this system must demonstrated from an economic point view through investigating whether...
Abstract Uncertainty in material properties can have large effect on numerical modeling of solids and structures. This is particularly true as all natural man‐made materials exhibit spatial non‐uniformity point‐wise uncertainty their behaviors. A methodology that accounts for the probabilistic yielding elastic–plastic presented. The recently developed Eulerian–Lagrangian form Fokker–Planck–Kolmogorov equation used to obtain a second‐order exact solution constitutive differential equations....
In this paper, recently developed probabilistic elastoplasticity was applied in simulating cyclic behavior of clay. A simple von Mises elastic–perfectly plastic material model used for simulation. Probabilistic soil parameters, elastic shear modulus (Gmax) and undrained strength (su), needed the simulation were obtained from correlations with standard penetration test (SPT) N-value. It has been shown that approach to geo-material modeling captures some important aspects—the reduction,...
There is increasing interest in reducing the cost of maintenance and rehabilitation civil infrastructure by using self-monitoring materials as part or total component structures. Structure repair are expensive time-consuming processes, especially when damage not discovered before crakes deformations affect integrity On other hand, methods used for regular structure health inspection again add to its service costs. Hence, there developing smart (self-monitoring) that provide structural...
Abstract The elastic–plastic modelling and simulations have been studied extensively in the last century. However, one crucial area of material has received very little attention. uncertainties properties probably largest influence on many aspects structural solids behaviour. Despite its importance, effects overall response structures rarely studied. Most small number studies variabilities used repetitive deterministic models through Monte‐Carlo‐type simulations. While this approach might...
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Abstract In this paper, the novel concept of probabilistic yielding is used for 1‐D cyclic simulation constitutive behavior geomaterials. Fokker–Planck–Kolmogorov equation‐based elastic–plastic framework applied obtaining complete (probability density function) material response. Both perfectly plastic and hardening‐type models are considered. It shown that when uncertainties in parameters taken into consideration, even simple, elastic‐perfectly model captures some important features...
This paper explores financial aspects of selecting retrofit strategies for an interdependent civil infrastructure system subjected to multiple hazards. A hypothetical bridge–roadway–levee system, seismic and high-water hazards, is analyzed the levee bridges are evaluated in terms risk metrics commonly used field engineering portfolio optimization. The include average annual losses, value at or probable maximum conditional risk, worst-case losses. analysis evaluation procedures rely on...
To account for non-uniformity and uncertainties in soil parameters, recent years, civil engineering practice particular, geotechnical has seen an increasing emphasis on probabilistic treatment to data subsequent simulation/design. Consistent development of a framework simulation/design will not only provide rational way address our confidence (or lack thereof) simulated/designed behavior, but also, it empower engineers demonstrate the need more, uniform properties, develop novel site...
Summary The paper presents a computationally efficient algorithm to integrate probabilistic, non‐Gaussian parameter estimation approach for nonlinear finite element models with the performance‐based earthquake engineering (PBEE) framework accurate performance evaluations of instrumented civil infrastructures. first utilizes minimum variance fuse predictions from numerical model infrastructure its measured behavior during past update parameters that is, then, used prediction future...
Recent efforts under the auspices of National Cooperative Highway Research Program (NCHRP) have resulted in development a Guide for Mechanistic-Empirical Design New and Rehabilitated Pavement Structures. The recently developed (MEPDG) employs an iterative procedure accumulating damage over entire design period. It follows by mechanistically computing pavement response (i.e., stresses strains) empirically translating these responses into individual distresses roughness. In current procedure,...
Using economic theory, this paper provides refinements and enhanced precision in the estimation of earthquake losses. We consider direct indirect losses for business entities belonging to COM4 occupancy class. examine two loss categories: (content, relocation, income, wages rental), (business gross domestic product (GDP), employee GDP supply-chain), together accounting eight loss-types. HAZUS as a benchmark, we provide comparative assessment our proposed approach estimation. The results show...
In this paper we present the development of an elastic-plastic material model for tire shreds material. particular, our aim is to use large scale triaxial tests calibrate elastic and anisotropic The main effort focused on dynamic behavior shred in particular energy dissipation characteristics during (seismic) loading. This presents results a calibration using wave propagation triaxially loaded specimen. immediate goal presented work creation verified validated that will then be used...
A probabilistic framework for simulation of problems with uncertain material properties in geomechanics has been outlined. The methodology is based on spectral stochastic finite element method and the Eulerian-Lagrangian form Fokker-Planck-Kolmogorov equation recently developed elasto-plasticity. proposed demonstrated low high OCR modified Cam Clay models.