Showing papers in "Engineering Structures in 2003"

TL;DR: In this paper, a frequency-based damage detection (FBDD) method was proposed to locate damage from changes in natural frequencies and a damage-sizing algorithm to estimate crack-size from natural frequency perturbation.

TL;DR: In this paper, the seismic response of three and six story concentrically braced steel frames utilizing buckling-restrained braces is investigated and detailed nonlinear dynamic analyses are performed for specific cases as well as statistically for several suites of ground motions in order to characterize the effect on key response parameters.

TL;DR: In this article, the authors reviewed existing vulnerability relationships for reinforced concrete structures with a view to their application to a European (and similar) seismic risk assessment scenario, and derived new empirical fragility curves for reinforcedcrete building populations based on a data bank of 99 post-earthquake damage distributions observed in 19 earthquakes.

TL;DR: This study shows that I-PreConS using ANN is very efficient for predicting the compressive strength development of concrete.

TL;DR: In this paper, a large number of reinforced concrete buildings collapsed or were heavily damaged during the 7.4 magnitude earthquake that struck northwestern Turkey on August 17, 1999, and the elastic acceleration response spectra from the recorded motions were comparable with the elastic design spectra specified in the current Turkish seismic code.

TL;DR: In this article, the design of a steel 1 MW wind turbine tower for gravity, seismic and wind loadings has been performed according to the relevant Eurocodes, in particular, regarding seismic loading, a dynamic phasmatic analysis of the tower has been carried out according to Greek Antiseismic Code (EAK 2000).

TL;DR: In this article, the authors identify relevant demand parameters, quantify these parameters for regular frame structures, and illustrate how statistically representative relationships between these parameters and ground motion intensity measures can be established.

TL;DR: In this article, a postbuckling analysis for a functionally graded cylindrical thin shell of finite length subjected to external pressure and in thermal environments is presented, where material properties are assumed to be temperature-dependent and graded in the thickness direction according to a simple power law distribution in terms of the volume fractions of the constituents.

TL;DR: In this article, a review of time-frequency distribution tools for the analysis of non-linear vibrations of structures is presented, and the strengths and weaknesses of each technique are demonstrated by applying them to a variety of synthetic signals.

TL;DR: In this paper, a new finite element model for three-dimensional FE analysis of high-speed train-bridge interactions is proposed, in which various improved finite elements are used for modeling the structural constituents of a railway bridge.

TL;DR: In this article, the seismic behavior factor (R) for steel X-braced and knee-braces RC buildings was evaluated for different ductility demands, including ductility reduction factor and over strength factor.

TL;DR: In this article, the authors presented a framework for performing dynamic analysis of coupled road vehicle and cable-stayed bridge systems under turbulent winds, where road vehicles are idealized as a combination of a number of rigid bodies connected by a series of springs and dampers.

TL;DR: In this paper, the authors used a combination of global (changes in natural frequencies) and local (curvature mode shapes) vibration-based analysis data as input in artificial neural networks (ANNs) for location and severity prediction of damage in beam-like structures.

TL;DR: In this article, the 2D steady-state response and riding comfort of a train moving over a series of simply supported railway bridges, together with the impact response of the rails and bridges are investigated.

TL;DR: A thermo-mechanical model for concrete subjected to high temperatures is presented in this article, based on a coupled plastic-damage model that has been extended to consider damage induced by high temperatures.

TL;DR: In this paper, a seismic displacement-based design method for new and regular buildings equipped with passive energy dissipation systems (EDS) is presented, where a target displacement is at first specified and then the corresponding design force, strength and stiffness are obtained.

TL;DR: In this article, the authors evaluate whether the ACI equation for deep beams is applicable to high-strength concrete deep beams with reinforcement ratio less than 1% and to consider size effects.

TL;DR: In this paper, a non-classical approach of genetic algorithms is employed as the search tool for its several advantages including ease of implementation and desirable characteristics of global search, and a numerical simulation study is presented, including a fairly large system of 50 degrees of freedom, to illustrate the identification accuracy and efficiency.

TL;DR: In this paper, the dynamic response of a multi-story steel moment resisting frame (MRF) equipped with fluid viscous (VS) dampers and subjected to seismic loads is investigated numerically.

TL;DR: In this paper, the authors investigated the effectiveness of variable dampers in improving the seismic response including pounding effect and found that the friction-type damping force scheme gave the largest reduction of deck displacement, relative displacement between two decks, and the flexural hysteretic curvature at the plastic hinge of a pier.

TL;DR: In this paper, the post-elastic behavior of low-axially loaded high-strength reinforced concrete (HSRC) columns containing transverse reinforcement designed complying with the shear resistance requirement of BS 8110 and the authors' proposed equation have been studied experimentally.

TL;DR: In this paper, four different configurations of externally bonded carbon fibre fabric strips are used to strengthen the reinforced concrete beams in shear and the results obtained by using the mechanical formula have been compared with theses obtained by test.

TL;DR: In this article, an iterative least squares method (ILS) was used to identify flutter derivatives from wind tunnel experiments with a three-degree-of-freedom (DOF) elastic suspension system.

TL;DR: In this article, the seismic response of a multi-story building supported on various base isolation systems during impact with adjacent structures is investigated, where the isolated building is modeled as a shear type structure with lateral degree-of-freedom at each floor.

TL;DR: In this article, the authors used finite element models to evaluate the seismic properties of 10 typical multi-tiered masonry temples in Nepal and found that most of the failure modes are associated with tensile and compressive stresses.

TL;DR: Wang et al. as mentioned in this paper presented a research and development project for structural bamboo where the column buckling behaviour of two structural bamboo species, namely Bambusa pervariabilis (or Kao Jue) and Phyllostachys pubescens (or Mao Jue), were investigated.

TL;DR: In this paper, the authors present the different stages of the conception and the design of tense grasps and present the concrete case of a double layer grid of 81 m 2 area.

TL;DR: In this paper, a comprehensive investigation of the stochastic response of a cable-stayed bridge subjected to spatially varying ground motions is performed based on a recently proposed model.

TL;DR: In this paper, an advanced base isolator called variable curvature friction pendulum system (VCFPS) is proposed in which the radius of the curvature of VCFPS is lengthened with an increase of the isolator displacement.

TL;DR: In this paper, the effectiveness of tuned mass dampers (TMD) for control of structures under seismic ground motion is investigated, and it is demonstrated that although TMD cannot reduce the peak displacement of the controlled structure after yielding, it can significantly reduce damage to the structure.