Showing papers in "Engineering Structures in 2018"

TL;DR: Techniques concerning applications of the noted AI methods in structural engineering developed over the last decade are summarized.

TL;DR: This review paper is intended to summarize the collective experience that the research community has gained from the recent development and validation of the vision-based sensors for structural dynamic response measurement and SHM.

TL;DR: A methodology is described for global and local health condition assessment of structural systems using ambient vibration response of the structure collected by sensors using synchrosqueezed wavelet transform, Fast Fourier Transform, and unsupervised deep Boltzmann machine to create a structural health index.

TL;DR: In this paper, the authors present an ambitious review that describes all the main advances that have taken place since the beginning of the 21st century in the field of progressive collapse and robustness of buildings.

TL;DR: In this article, the effects of the graded properties on their crashworthiness are discussed, and the authors demonstrate that thin-walled structures and cellular materials could exhibit more efficient and effective energy-absorbing performance by introducing graded properties.

TL;DR: An autoencoder based framework for structural damage identification, which can support deep neural networks and be utilized to obtain optimal solutions for pattern recognition problems of highly non-linear nature, such as learning a mapping between the vibration characteristics and structural damage.

TL;DR: The efficiency of various machine learning techniques is evaluated using extensive experimental data from 536 experimental tests, and it has been seen from the comparison that lasso regression has a better efficiency and reasonable accuracy in the classification and prediction.

TL;DR: A multi-parameter fragility methodology using artificial neural network to generate bridge-specific fragility curves without grouping the bridge classes is suggested.

TL;DR: This study summarises a part of the activities conducted by the Working Group 2 of COST Action FP1402, by presenting an in-depth review of the research works that have analysed the seismic behaviour of CLT structural systems.

TL;DR: In this article, the authors present the test results of an experimental study consisting of nine large-scale rectangular reinforced concrete columns, including eight FRP-confined RC columns and one RC column without FRP jacketing as the control specimen, tested under axial compression.

TL;DR: In this paper, the authors used a numerical model verified against some experimental testing data to investigate the dynamic responses and failure modes of reinforced concrete bridge columns under vehicle collision and showed that the peak impact force from the collision is governed by the vehicle engine and the vehicle velocity while the impulse of the impact force is influenced by the initial momentum of the total mass.

TL;DR: In this article, an experimental investigation on the seismic behavior of a novel steel-concrete composite beam-to-column connections reinforced by outer-annular-stiffener is presented.

TL;DR: In this paper, the seismic behavior of the beam-column connections in concrete frame is studied, including five precast specimens and one cast-in-place specimen, and the results reveal that the seismic performance of the precast connection is similar to that of the cast in-place connection, but the distribution of cracks, the strain of reinforcements and the deformation of joint are different.

TL;DR: In this paper, the geometrically nonlinear harmonically excited vibration of third-order shear deformable functionally graded graphene platelet-reinforced composite (FG-GPLRC) rectangular plates with different edge conditions is examined.

TL;DR: In this paper, an existing dilation model for concrete-filled FRP wraps is combined with a biaxial stress analysis of the FRP tube so that the effect of the Poisson's ratio of the tube is properly accounted for.

TL;DR: Numerical simulations of the application of inerter to a barge-type floating offshore wind turbine for the purpose of mitigating loads of the wind turbine structures induced by wind and wave show that the overall performance can be improved, except the tower-top fore-aft load and the TMD working space.

TL;DR: In this paper, the feasibility of using the ultra-high ductility cementitious composites (UHDCC) for construction without steel reinforcement, the mechanical properties of UHDCC was experimentally tested at material, structural member and structure levels.

TL;DR: In this paper, a study on long-term properties of concretes manufactured with recycled aggregates of different parent concrete strengths was presented to establish the longterm compressive strength, elastic modulus, splitting tensile strength, workability, drying shrinkage, and creep of each batch.

TL;DR: In this paper, the in-plane experimental response of external masonry infills constructed with tongue and groove clay units has been studied, with particular attention devoted to the infill performance, the related damage distribution, the lateral stiffness, strength and dissipation capacity and a possible definition of performance limit states.

TL;DR: The most significant conclusion of the investigation is that the ANNs can reliably approach the seismic damage state of r/c buildings in real time after an earthquake.

TL;DR: The FE results show that both AISC and European design procedures can guarantee the formation of a plastic hinge in the beam under cyclic loading and that under column loss scenarios the European connections are more ductile than those designed according to both Aisc 358-16 and AISC 341-16.

TL;DR: In this paper, a finite element method (FEM) analysis framework is introduced for the free and forced vibration analyses of functionally graded porous (FGP) beam type structures, where both Euler-Bernoulli and Timoshenko beam theories have been adopted such that the explicit stiffness and mass matrices for 2-D FGP beam element through both beam theories are explicitly expressed.

TL;DR: A Modified Cornwell Indicator (MCI) is proposed that performs more efficient in damage detection than the standard Corn well indicator (CI) and is combined with Genetic Algorithm for further quantification of the detected damage.

TL;DR: In this paper, the structural responses of steel moment resisting and self-centring braced frames under pulse-like near-fault earthquakes are analyzed. And the influence of varying brace properties on the key engineering demand parameters such as maximum inter-storey drift (MID), residual inter-boardy drift and peak absolute floor acceleration (PA) is revealed.

TL;DR: In this paper, a machine-learning based condition assessment method for stay cables by using the monitored cable tension force was proposed, which is based on the correlation of cable tension response between cable pairs (defined as the two cables at the upriver side and the opposite downriver side in the double cable planes).

TL;DR: A case study application quantifying the EAL and collapse safety for three school buildings representative of the Italian school building stock and a comparison is made with the seismic classification guidelines recently introduced in Italy to provide further insight into how these can be used to identify existing buildings vulnerable to excessive damage and potential collapse during earthquakes.

TL;DR: In this article, the seismic performance of a sea-crossing cable-stayed bridge is comprehensively evaluated based on the fragility function methodology, and the effect of seawater on the bridge seismic responses is modeled using the hydrodynamic added mass method.

TL;DR: Tests on seven full-scaled tee-shape connections made of hollow structural section (HSS) members were conducted under monotonic and cyclic load, indicating that the proposed connection can be classified as “semi-rigid” connection and will provide useful references for expanding the application of MSCs.

TL;DR: In this article, the impact resistances of UHPFRC-strengthened columns were extensively investigated using the appropriate simplified model, and three different simplified models, as published in current studies, were investigated to replace the whole bridge model.

TL;DR: In this paper, the impact responses of UHPC targets with 3 volumetric% ultra-high molecular weight polyethylene (UHMWPE) fibres and UHMC targets with steel fibres are experimentally investigated subjected to high-velocity projectile penetration, and plain concrete targets under the same loading scenarios are also tested as control specimens for comparative purpose.