Showing papers in "Advances in Structural Engineering in 2020"
TL;DR: The article places its special interest on the principles, structure design, and device characterisation of different types of negative stiffness vibration isolation devices, including spring type, pre-bucked beam type, magnetism type, geometrically nonlinear structural type, and composite structural type.
Abstract: In recent years, negative stiffness vibration isolation device with nonlinear characteristic has become an emerging research area and attracted a significant amount of attentions in the community d...
72 citations
TL;DR: Both numerical and experimental results indicate that the combination of the grey wolf optimization and expanded mode shapes with system equivalent reduction and expansion process can provide a reliable approach for determining the severities and locations of damage of skeletal structures when it compares with those obtained by Harris hawks optimization.
Abstract: Vibration-based structural damage identification through optimization techniques has become an interesting research topic in recent years. Dynamic characteristics such as frequencies and mode shape...
61 citations
TL;DR: In this article, mechanical properties and durability performance of confined/unconfined geopolymer concrete and ordinary concrete specimens were investigated under ambient and seawater environments, and the results showed that the latter is more durable than the former.
Abstract: In the study, mechanical properties and durability performance of confined/unconfined geopolymer concrete and ordinary concrete specimens were investigated under ambient and seawater environments. ...
37 citations
TL;DR: In this paper, a self-centering fluidic viscous damper that incorporates preloaded ring springs to offer selfcentering capability and a viscous fluidic damper for energy dissipation is presented.
Abstract: This research presents a novel self-centering fluidic viscous damper that incorporates preloaded ring springs to offer self-centering capability and a fluidic viscous damper for energy dissipation....
34 citations
TL;DR: In this article, a comparative study on behavior of fiber-reinforced polymer-confined concrete in axially loaded circular columns strengthened using three different fiber reinforced polymer materials is presented.
Abstract: This article presents a comparative study on behavior of fiber-reinforced polymer–confined concrete in axially loaded circular columns strengthened using three different fiber-reinforced polymer pa...
34 citations
TL;DR: The typical U-shaped deep-cut canyon is widely distributed in the western mountainous areas of China, especially in Sichuan province and Yunnan province as discussed by the authors, and it has the characteristics of the typical deep cut canyon.
Abstract: The typical U-shaped deep-cut canyon is widely distributed in the western mountainous areas of China, especially in Sichuan province and Yunnan province. The deep-cut canyon has the characteristics...
34 citations
TL;DR: A hybrid algorithm, which combines the ant lion optimizer with an improved Nelder–Mead algorithm, is proposed to solve the constrained optimization problem of complex structural damage detection and shows that the proposed hybrid algorithm can locate damage and quantify damage severity more accurately and stably with a good robustness to noise.
Abstract: Structural damage detection is the kernel technique in deploying structural health monitoring. The structural damage–detection technique using heuristic algorithms has been developed at an astoundi...
33 citations
TL;DR: This article reviews widely used dynamic substructuring methods for model updating and damage identification of large-scale structures and assembles the vibration properties of each substructure into those of the substructures.
Abstract: Substructuring methods possess many merits in model updating and damage identification of large-scale structures. With substructuring methods, a global structure is divided into a number of indepen...
32 citations
TL;DR: In this article, a comprehensive and critical review of the structural performance of reinforced recycled aggregate concrete beams and columns is presented based on experimental results reported in the literature, based on the results reported by the authors.
Abstract: This article presents a comprehensive and critical review of the structural performances of reinforced recycled aggregate concrete beams and columns based on experimental results reported in the li...
31 citations
TL;DR: A combined probabilistic framework is proposed to assess seismic risk, sustainability, and resilience of a non-ductile reinforced concrete frame structure using three-dimensional inelastic fiber-based numerical modeling approach to develop limit states associated with performance levels.
Abstract: Recent earthquakes have highlighted additional losses due to the lack of resilience of damaged structures. Environmental impact, as performance indicator, has also received increased attention with...
31 citations
TL;DR: In this paper, the authors proposed that seismic loads pose a potential threat to the high-speed railway bridges in China, which have been rapidly developing in recent years, especially for those subjected to the near-fault earthquakes.
Abstract: Seismic loads pose a potential threat to the high-speed railway bridges in China, which have been rapidly developing in recent years, especially for those subjected to the near-fault earthquakes. T...
TL;DR: In this paper, the behaviour and strength of built-up battened box column composed of lipped angles under axial compression was investigated and ten specimens were fabricated and tested under pinned...
Abstract: This article mainly investigates the behaviour and strength of built-up battened box column composed of lipped angles under axial compression. Ten specimens were fabricated and tested under pinned ...
TL;DR: In this article, the flexural durability of three types of seawater sea-sand concrete beams that were fully reinforced with steel bars, 304 stainless steel bars or fiber-reinforced polymer bars was investigated.
Abstract: In this article, the flexural durability of three types of seawater sea-sand concrete beams that were fully reinforced with steel bars, 304 stainless steel bars, or fiber-reinforced polymer bars we...
TL;DR: In this paper, the authors quantified the aerodynamic forces acting on vehicles and long-span bridges and assessed the safety of moving vehicles on bridges which are subjected to strong wind.
Abstract: Accurately quantifying the aerodynamic forces acting on vehicles and long-span bridges is critical for assessing the safety of moving vehicles on bridges which are subjected to strong wind. It is n...
TL;DR: To investigate the structural performance of Tou–Kung, two 1/3.52-scaled models of Tou-Kung were designed and tested subjected to vertical loading and quasi-static loading and numerical simulation analysis of the models was carried out to study the influence of tilting angle.
Abstract: To investigate the structural performance of Tou–Kung, two 1/3.52-scaled models of Tou–Kung were designed and tested subjected to vertical loading and quasi-static loading. Also, the finite element...
TL;DR: In this article, the authors investigated the behaviour of slender concrete-filled steel tube square columns strengthened by concrete filled steel tube jacketing and found that the columns were realized by placing a square out of the square.
Abstract: This article investigates the behaviour of slender concrete-filled steel tube square columns strengthened by concrete-filled steel tube jacketing. The columns were realised by placing a square oute...
TL;DR: In this paper, site investigation of tunnels crossing faults revealed that there were different types of damagagami in the tunnels crossing fault zones, and the zones where tunnels pass through faults are considered to be severely damaged during earthquakes.
Abstract: The zones where tunnels pass through faults are considered to be severely damaged during earthquakes. Site investigation of tunnels crossing faults revealed that there were different types of damag...
TL;DR: Due to its structural efficiency, durability, and cost-effectiveness, ultra-high performance concrete was utilized to build the first highway overpass bridge in China as mentioned in this paper. The bridge was made of prestr...
Abstract: Due to its structural efficiency, durability, and cost-effectiveness, ultra-high performance concrete was utilized to build the first highway overpass bridge in China. The bridge was made of prestr...
TL;DR: An approach that extracts warning index by linear combination of two non-stationary time series using the cointegration algorithm is developed in order to produce a more stationary cointegrated residual series (warning index series) that is capable of cable anomaly warning.
Abstract: For long-span cable-stayed bridges, cables are one of the most important components to resist various actions. With the application of structural health monitoring technique, real-time recording of...
TL;DR: Signal-based seismic structural health monitoring technique for damage detection and evaluating damage severity of a multi-story frame subjected to an earthquake event, taking advantage of signal processing and artificial intelligence techniques is presented.
Abstract: This article presents a signal-based seismic structural health monitoring technique for damage detection and evaluating damage severity of a multi-story frame subjected to an earthquake event. As a...
TL;DR: In this paper, the static shear behavior of large-headed studs embedded in ultra-high-performance concrete was investigated by push-out test and numerical analysis, and a total of nine pushout tests were performed.
Abstract: In this article, the static shear behavior of large-headed studs embedded in ultra-high-performance concrete was investigated by push-out test and numerical analysis. A total of nine push-out speci...
TL;DR: In this paper, a semi-precast reinforced concrete slab system is proposed to reduce the need of formwork at the site, which is a more economic method of construction as it minimises the need for formwork.
Abstract: Semi-precast-reinforced concrete slab system offers more economic method of construction as it minimises the need of formwork at site. The assembly of semi-precast slab system involves two steps: (...
TL;DR: In this paper, an emerging technology holding promise of sustainability is discussed, where the alarming rate at which the human community is depleting the natural resources to cater its needs is highlighted.
Abstract: Energy harvesting is an emerging technology holding promise of sustainability amid the alarming rate at which the human community is depleting the natural resources to cater its needs. There are se...
TL;DR: This article proposes a new framework and sampling and training method based on active learning to treat class imbalances in concrete surface crack detection and reveals outstanding performances of the proposed framework in terms of the detection accuracy, precision and F1 measure.
Abstract: Concrete surface crack detection based on computer vision, specifically via a convolutional neural network, has drawn increasing attention for replacing manual visual inspection of bridges and buil...
TL;DR: The results indicate that the proposed discrete algorithm can achieve lighter structural designs than the area-only algorithm, and the convergence history proves that a high computational efficiency can be realized by using the proposed algorithm.
Abstract: Performance-based design optimization of steel frames, with element sections selected from standard sections, is a computationally intensive task. In this article, an efficient discrete optimizatio...
TL;DR: In this paper, the authors proposed that coastal bridges are exposed to hurricane waves and storm surges during hurricanes, which threaten the safety of the superstructures, since waves and ocean currents coexist in the natural marine environment.
Abstract: Coastal bridges are exposed to hurricane waves and storm surges during hurricanes, which threaten the safety of the superstructures. Since waves and ocean currents coexist in the natural marine env...
TL;DR: In this paper, the authors investigate the collapse mechanism and the anti-collapse performance of a transmission tower in the presence of strong winds and demonstrate that it is robust to strong winds.
Abstract: Numerous transmission towers have collapsed due to experiencing strong winds; therefore, the purpose of this article is to investigate the collapse mechanism and the anti-collapse performance of a ...
TL;DR: An experimental program investigating the flexural behavior of an innovative dovetail ultra-high performance concrete joint for connecting precast ultra high performance concrete slabs in composite materials is described in this article.
Abstract: An experimental program investigating the flexural behavior of an innovative dovetail ultra-high performance concrete joint for connecting precast ultra-high performance concrete slabs in composite...
TL;DR: Concrete-filled fiber-reinforced polymer tubes are a novel form of composite columns, which are particularly attractive for structural members in harsh environments and seismic regions due to their robustness.
Abstract: Concrete-filled fiber-reinforced polymer tubes are a novel form of composite columns, which are particularly attractive for structural members in harsh environments and seismic regions due to their...
TL;DR: In this paper, the compaction level of the self-compacting concrete is defined as the percentage of volume occupied by matrices, i.e., the number of matrices that can be filled by a concrete tube.
Abstract: Self-compacting concrete is quite commonly used in concrete-filled steel tube structures, but the compaction level of the self-compacting concrete, that is, the percentage of volume occupied by mat...