The seismic protection of high-speed rail (HSR) bridges must be based on the safe running trains those structures. Passive control systems, including lead rubber bearings, can mitigate forces acting bridges. Nonetheless, this could result in an escalation bridge's displacement, perhaps causing train derailment. present study analyzes influence near-fault (NF) vertical effects, characterized by significant ground motion (VGM), alignment safety all vehicles a formation operating...

Regular crack detection is essential for extending the service life of bridges. However, image data collected during bridge inspections are complex to convert into physical information and construct intuitive comprehensive Three-Dimensional (3D) models incorporating information. An intelligent method surface damage based on Unmanned Aerial Vehicles (UAVs) proposed these challenges, a three-stage detection, quantification, visualization process. This enables automatic localization in 3D...

Recently, emergency structures have been in the spotlight because of coronavirus disease (COVID-19) pandemic. This research examines use modular integrated construction (MiC) developing an hospital for individuals with novel coronavirus-infected pneumonia (NCIP). The whole process building is based on design and assembly idea. primary structure was constructed using steel buildings (MSBs) concept to suit structures’ functional qualities quick needs. An intelligent operation maintenance...

In recent years, crack detection has been the focus of relevant research since concrete fractures are most dangerous damage to structures. Computer vision-based approaches frequently employed for their distinct benefits. However, segmentation model based only on convolutional neural networks (CNNs) is still inadequate in generalization because its inherent bias produced by low contextual understanding capacity. This provides a framework PSC (Parallel Swin-CNNs) that employs multi-scale...

A semi-floating cable-stayed bridge can swing longitudinally to absorb seismic energy in an earthquake for the purpose of reducing structural response. However, large transverse (lateral) response such large-span bridges must be controlled avoid severe damage and ensure train safety. This study investigates dynamic associated damping mechanism a coupled high-speed rail (HSR) vehicle system subjected various ground motions. comprehensive vehicle–track–bridge interaction is first established....

Shear damage of beams is typically brittle that significantly more detrimental than flexural damage.Based on the super-high toughness and good crack control ability engineered cementitious composites (ECC), shear performance concrete-ECC was investigated by replacing a portion concrete in tensile zone reinforced with ECC employing high-strength reinforcing bars to design beams. The purpose this investigation elucidate clarify beams.Experimental FE analyses were conducted 36 webless composite...

Background: Tied-arch bridges’ hangers are crucial load-bearing parts, and their excellent condition directly influences bridge safety. However, assessing in-service hangers’ continuing functional performance is irrelevant incomplete, particularly for unique covered by outer steel tubes. Objective: This research uses a case study of an under-bearing tied-arch with substantial hanger damage to determine the origin analyze hanger’s remaining operational ability. Methodology/approach: presents...

Background: Studying the effects of traffic vibration on adjacent structures has produced fruitful results, but there is a lack systematic research protection, assessment, and ambient cultural relics, majority studies focus above-ground buildings, with less conducted underground relic sites. Objective: In order to investigate road-traffic-induced nearby sites, distance between them was precisely determined. Methodology/approach: The site Chengshang Village in Jurong City, Nanjing, China,...

Today, communication between humans is essential. Dialog the most convenient and commonly used method. However, has always been a problem for deaf people. Therefore, there are often many problems due to poor communication. Thus, method with sign language evolved, but not everyone relevant knowledge. Although caused by inability speak solved, still inconveniences. this paper proposes an intelligent translation system that combines expression movements hand solve of people those who have...

Steel truss bridges are especially vulnerable in the event of a sudden loss load-carrying element, which can trigger chain failures. This paper describes unique case study steel bridge under construction subjected to member breakages with an extensive monitoring system. The failures occurred during dismantlement temporary members that had been used transform three-span simply supported into continuous structure incremental launching. These needed be removed once reached its final position....

Knowing the extent of displacement experienced by railroad bridges when loaded is useful evaluating safety and serviceability bridge. However, measuring displacements under train crossing events difficult. If simplified reference-free methods would be accurate validated, owners conduct objective performance assessment their bridge inventories trains. Researchers have developed new sensing technologies (reference-free) to overcome limitations reference point-based sensors. Reference-free use...

For an RC beam, the strength of steel rebar, bonding between concrete and reinforcement, bite action aggregates will deteriorate significantly due to corrosion. In present study, 10 beams were designed study impact corrosion on shear bearing capacity. The mechanism for stirrups longitudinal bars their effects analyzed. Based existing experimental data, correlation stirrup factor cross section loss rate was obtained. An effective prediction formula capacity corroded proposed validated by...

The corrosion of steel bars embedded in concrete structures results the degradation their structural capacity. In earthquake-prone zones, corroded structure may be considerably vulnerable under mainshock–aftershock sequences relative to a single mainshock. Therefore, it is necessary reinforce resist potential natural hazards. this study, effects both pitting and uniform on capacity bridge pier before after strengthening were studied. Subsequently, failure probability was calculated, which...