Showing papers in "Engineering Structures in 2005"

TL;DR: In this paper, a review of existing bond strength models and bond-slip models is presented, and the results of 253 pull tests on simple FRP-to-concrete bonded joints, leading to the conclusion that a more accurate model is required.

TL;DR: The importance of implementing long-term structural health monitoring systems for large-scale bridges, in order to secure structural and operational safety and issue early warnings on damage or deterioration prior to costly repair or even catastrophic collapse, has been recognized by bridge administrative authorities.

TL;DR: In this article, the problem of locating sensors on a bridge structure with the aim of maximizing the data information so that structural dynamic behavior can be fully characterised was considered, and six different optimal sensor placement techniques, three based on the maximisation of the Fisher information matrix (FIM), one on the properties of the covariance matrix coefficients, and two on energetic approaches, have been investigated.

TL;DR: In this article, a two-wheel cart towed by a light truck is used to scan the fundamental frequency of vibration of a sustaining bridge, where the bridge vibration is received or scanned by an accelerometer installed in the cart.

TL;DR: In this paper, a support vector machine (SVM) technique is applied to formulate regression models which quantify the effect of temperature on modal frequencies for the cable-stayed Ting Kau Bridge (Hong Kong), which has been instrumented with a long-term structural health monitoring system.

TL;DR: In this article, a multi-disciplinary research program on fiber bragg grating sensors involving the School of Civil and Structural Engineering at Nanyang Technological University in Singapore is reported.

TL;DR: In this paper, a new simple confined concrete model is developed for describing the axial and lateral deformation characteristics of concrete under triaxial compression, and a parametric study was conducted to investigate the effect of the lateral reinforcement ratio, concrete strength, and compressive failure energy on the behavior of steel and fiber reinforced polymer (FRP) confined concrete.

TL;DR: The initial velocity estimation method for the displacement determination algorithm is suggested to overcome problems if the bridge height is so high that it is difficult to install the sensor and the measured results are not as reliable and accurate.

TL;DR: In this paper, a meso-scale finite element (FE) model implemented with the MSC program is presented for the simulation of interfacial debonding failures in a pull test, where very small nearly square elements (0.25-0.5 mm in size) are used with the fixed angle crack model (FACM) to capture the development and propagation of cracks in the concrete layer adjacent to the dhesive layer.

TL;DR: In this article, an adaptive pushover analysis is employed within a capacity spectrum framework of assessment, to determine the performance of a population of building models for increasing ground motion intensity, and the results of the assessments are used to construct response surfaces from which the damage statistics forming the basis of the vulnerability curves are generated through re-sampling.

TL;DR: In this article, a semi-active variable stiffness tuned mass damper (SAIVS-TMD) was used to reduce the structural response of a wind excited tall building.

TL;DR: In this paper, the authors investigate the along-wind forced vibration response of a wind turbine tower and rotating blades assembly subjected to rotationally sampled stationary wind loading, using a discrete Fourier transform (DFT) representation of wind turbulence spectra.

TL;DR: In this paper, a fragility assessment for roof sheathing in light frame constructions built in high wind regions is presented to assess the performance of roof sheaths subjected to uplift (suction) pressures.

TL;DR: In this article, a hydro-mechanical model, accounting for the full coupling of drying, shrinkage, creep and cracking is presented, and a new basic creep constitutive law based on microscopic considerations of the role of water is elaborated.

TL;DR: In this article, the analytical seismic response of multi-story buildings isolated by the friction pendulum system (FPS) is investigated under near-fault motions, where the superstructure is idealized as a linear shear type flexible building and the governing equations of motion of the isolated structural system are derived and the response of the system to the normal component of six recorded near fault motions is evaluated by the step-by-step method.

TL;DR: In this paper, an analytical and experimental modal analysis has been carried out on the Qingzhou cable-stayed bridge in Fuzhou, China, which is currently the longest span among the completed composite-deck cablestayed bridges in the world.

TL;DR: In this paper, the authors evaluated the opportunities provided by the use of Carbon Fiber Reinforced Polymer (CFRP) composites for the seismic repair of reinforced concrete (RC) structures on a full-scale dual system subjected to pseudodynamic tests in the ELSA laboratory.

TL;DR: In this paper, a procedure to account for the uncertainty in the characteristics of future ground motions during seismic response assessment is presented, where the probability of exceedance of structural response parameters conditioned to a given ground motion intensity is computed from a series of deterministic response history analyses at three loading intensity levels.

TL;DR: In this article, a damage detection procedure, using pattern recognition of the vibration signature, was assessed using a finite element model of a real structure, a suspension bridge more than 100 years old.

TL;DR: In this paper, a structural damage detection algorithm using static test data is presented, which is characterized as a set of non-linear simultaneous equations that relate the changes in the static response to the location and severity of damage.

TL;DR: In this article, a nonlinear finite element analysis procedure for the seismic damage assessment of reinforced concrete bridge columns is presented, and a damage index based on the predicted hysteretic behavior of a reinforcement concrete bridge column is defined.

TL;DR: In this article, the sensitivity of wavelet packet transform (WPT) component energy with respect to local change in the system parameters is derived analytically based on the dynamic response sensitivity.

TL;DR: In this article, a cost optimisation of reinforced concrete flat slab buildings according to the British Code of Practice (BS8110) is presented, where the objective function is the total cost of the building including the cost of floors, columns and foundations.

TL;DR: In this paper, a case study of the 8th-century masonry tower Torre Sineo (Alba, Italy) is described, which reveals the presence of damaged zones concentrated close to the opening regions as well as a deviation of the tower from verticality.

TL;DR: In this paper, some useful guidelines for designing tuned liquid column dampers (TLCDs) for damped single-degree-of-freedom structures under a white noise type of wind excitation are proposed as quick guidance for industrial practice.

TL;DR: In this paper, eighteen reinforced concrete beams were tested as a part of extensive research on shear design of reinforced high-strength concrete beams, and a minimum amount of shear reinforcement related to the concrete tensile strength was also proposed.

TL;DR: In this article, the authors check the capability of dynamic identification procedures, usually applied to reinforced concrete or steel buildings, in the estimation of the dynamic characteristics of masonry buildings, and the results show that well-established identification techniques can furnish useful information concerning the dynamic properties of existing masonry structures.

TL;DR: In this paper, a two-dimensional model of multi-span masonry bridges is developed in which arches and piers are described as beams made up of elastic, non-tensile resistant (NTR), ductile in compression material, and the fill as a Mohr-Coulomb material modified by a tension cut-off under plane strain conditions.

TL;DR: In this paper, an empirical mode decomposition (EMD)-based stochastic subspace identification procedure utilizing operational vibration measurements is presented. But, the method is not suitable for nonstationary signals.

TL;DR: In this paper, the strength and deformation capacity of squat reinforced concrete shear walls that are not designed for seismic actions are investigated in the framework of the study focussing on seismic evaluation of existing buildings.