Showing papers in "Engineering Structures in 2010"

TL;DR: Resilience function captures the effect of the disaster, but also the results of response and recovery, the effects of restoration and preparedness, and becomes an important tool in the decision process for both the policy makers and the engineering professionals.

TL;DR: In this article, a brief review of the acoustic emission technique and its applications to bridge health monitoring is given, focusing on the discussion of available techniques of acoustic emission data processing, both qualitative and quantitative.

TL;DR: In this paper, a critical review and assessment of the ability of the existing Drucker-Prager (D-P) type concrete plasticity models to predict the behavior of confined concrete using both experimental observations and numerical results is presented.

TL;DR: In this paper, a modified plastic-damage model was proposed for non-uniformly confined concrete, which includes a damage parameter, a strain-hardening/softening rule and a flow rule, all of which are confinement-dependent.

TL;DR: In this article, the authors present the results of an experimental study on the behavior of axially loaded short rectangular columns that have been strengthened with carbon fiber-reinforced polymer (CFRP) wrap.

TL;DR: In this article, an ambient vibration survey of the Humber Bridge was carried out in July 2008 by a combined team from the UK, Portugal and Hong Kong, where ten stand-alone tri-axial acceleration recorders were deployed at locations along all three spans and in all four pylons during five days of consecutive one-hour recordings.

TL;DR: In this article, a detailed presentation of experimental test results for the flexural behavior of ultra high performance concrete beams is provided, where the experimental parameters included the amount of rebar and the placing method for the UHPC.

TL;DR: In this article, a response surface-based finite element (FE) model updating procedure for civil engineering structures in structural dynamics is presented, where the key issues to implement such a model updating are discussed such as sampling with design of experiments, selecting the significant updating parameters and constructing a quadratic polynomial response surface.

TL;DR: In this paper, the experimental and finite element analysis results of a proposed steel buckling-restrained brace (BRB) have been presented, which has two components: a steel core plate that carries all axial forces during tension and compression, and two identical restraining members that sandwich the core plate with fully tensioned high-strength A490 bolts to prevent core buckling.

TL;DR: In this paper, a new analytical approach for the derivation of fragility curves for masonry buildings is proposed, based on nonlinear stochastic analyses of building prototypes, where the mechanical properties of the prototypes are considered as random variables, assumed to vary within appropriate ranges of values.

TL;DR: In this article, three models with different levels of complexity and simplification were developed to overcome the complexity of the study of the seismic behavior of ancient masonry structures; by combining the results of the different models, it is possible to obtain a better and more comprehensive interpretation of seismic behavior.

TL;DR: In this paper, a case study of progressive collapse analysis of a selected multistory building is presented, where a detailed 3D model with large number of finite elements has been developed for the entire structure.

TL;DR: In this paper, the authors proposed that steel longitudinal reinforcement should be added to form a hybrid FRP-reinforced concrete (FRPRC) beam to improve its flexural ductility and retain the high strength feature of the FRP bars.

TL;DR: In this article, a new method for progressive collapse analysis of reinforced concrete (RC) frame structures by considering non-zero initial conditions and initial damage to adjacent structural members under blast loading is proposed.

TL;DR: In this article, a 3D vehicle-bridge coupled model was developed to simulate the interaction between a bridge and vehicles and investigated the impact factor for multi-girder concrete bridges.

TL;DR: In this paper, a hybrid seismic device that provides both energy-absorbing and re-centering capabilities to overcome external forces is developed and evaluated, which is composed of three main components: (1) a set of recentering wires fabricated from shape memory alloy (SMA) material, (2) two energy absorbing struts, and (3) two high-strength steel tubes to guide the movement of the hybrid device.

TL;DR: In this paper, a performance-based plastic design (PBPD) methodology for the design of buckling-restrained braced frames (BRBFs) is presented, where the design base shear is obtained based on energy-work balance using pre-selected target drift and yield mechanism.

TL;DR: In this paper, the authors proposed a Kernel PCA (KPCA) based method for fault detection in mechanical systems using subspaces between the reference and a current state of the system through the concept of subspace angle.

TL;DR: In this paper, the authors performed numerical simulations of dynamic responses of a large cable-stayed bridge under explosive loadings using the LS-DYNA explicit finite element code, and the results showed that the bridge tower, pier, and deck were severely damaged.

TL;DR: In this article, the authors investigated the uniaxial compression behavior of concrete cylinders confined using an innovative active confinement technique, where the thermally triggered recovery stress of prestrained Shape Memory Alloy (SMA) spirals was utilized to apply external active confining pressure to concrete cylinders.

TL;DR: In this paper, a 22-storey reinforced concrete building is used to trace the variation of its modal frequencies, which are identified using the Bayesian spectral density approach with the ambient vibration data.

TL;DR: In this paper, two semi-active control methods for seismic protection of structures using magnetorheological dampers are proposed, namely Simple Adaptive Control (SACC) and Genetic-Based Fuzzy Control (GFC).

TL;DR: In this article, the authors discuss the strategy adopted in the design and assessment of the efficiency of this control system, pointing out particular problems with the lateral TMDs that suggest that the currently adopted design methodologies are non-conservative.

TL;DR: In this article, the authors studied the cyclic response of tubular bracing members of three structural materials (hot-rolled carbon steel, cold-formed carbon steel and coldformed stainless steel) under cyclic axial loading.

TL;DR: In this paper, a full-scale two-storey RC building with poor detailing in the beam-column joints was tested on a shake table as part of the European research project ECOLEADER.

TL;DR: In this article, the authors describe the studies undertaken at a design stage and the results of a thorough experimental assessment of the constructed bridge properties, which allowed in particular the identification of modal parameters and the observation of the lateral "lock-in" effect under the crossing of the footbridge by pedestrian streams prior to installation of control devices.

TL;DR: In this paper, a vertical displacement transducer was used for structural health monitoring of the Leziria Bridge, and the performance of the optical-based structural monitoring system was evaluated.

TL;DR: In this paper, a three-dimensional finite element analysis (FEA) model is formulated, based on the orthotropic constitutive characteristics of timber species, to predict the behavior of timber beams strengthened with carbon fiber reinforced polymer composites.

TL;DR: In this paper, the performance level and the seismic behaviour factor of the FRP retrofitted RC frame were compared with those of the original frame and the same frame retrofitted with steel bracings.

TL;DR: In this article, the effectiveness of MR damper is examined for seismic response mitigation of adjacent multistory buildings under coupled building control scheme, involving passive-off, passive-on and semiactive control strategies.