This study investigates the structural behaviour of double-skin columns, introducing novel – double filled tubular (DSDFT) which utilize dual steel tubes and concrete to enhance load-carrying capacity ductility beyond conventional hollow (DSHT) employing a combination finite element model (FEM) machine learning (ML) techniques. A total 48 columns (DSHT+DSDFT) were created examine impact various parameters, such as tube configurations, thickness fibre-reinforced polymer (FRP) layer, type FRP...

The education system has dramatically changed from physical to online due COVID-19. Millions of learners around the world have been affected pandemic caused by coronavirus. emergence COVID-19 forced educational institutions divert all strategies platforms for safety students, instructors, and other staff members. processes examining students their assessment are heavily sudden adoption than at campus. research in this paper discusses issues relevant assessments used universities region UAE....

The emission and mitigation of greenhouse gases transforms the status urban environments. However, a policy accounting for all aspects associated with transport is lacking. Problems related to include greater reliance on cars, increased congestion, environmental impacts. absence an efficient public system notable cause prompt escalation diverse problems, example, increases in number personal automobiles causes congestion road, resulting air pollution, ubiquitous effects noise which...

The shift to an online education paradigm has been dramatically seen in educational systems and universities due COVID-19 across the world, especially United Arab Emirates. emergence of forced institutions divert all strategies from physical platforms for safety students, instructors other staff members. However, this is not case only because governmental non-governmental are affected same way around world. objective research understand behavior students a sudden towards experience...

Several approaches have been used in the past to predict fatigue crack growth rates T-joints of offshore structures, but there are relatively few cases applying structural health monitoring during non-destructive testing jacket platforms. This paper presents an experimental method based on sensing piezoelectric sensors and finite element analysis for studying cracks steel structure. Three types joints selected current research work: T-type plate, tube-plate, tube joints. The model...

Composite structures, such as the fiberglass reinforced structure studied in this paper, have been normally treated previous research homogeneous anisotropic laminated plates regarding investigation of their mechanical properties. Throughout specific is considered a different way which and polyethylene matrix are separately. By using proposed method, material plasticity fracture stress can be taken into account, thus inside flexible pipes(FGRFP) predicted. The behavior FGRFP under two...

The accurate prediction of short-term platform motions in a real environment is crucial for the safe design, operation, and maintenance floating offshore wind turbines (FOWTs). Numerical simulations are typically associated with high uncertainties due to abstracted theoretical models, empirical parameters, initial etc. Therefore, it necessary integrate other sources information less uncertainty, e.g., monitoring data, predictions. In this paper, we propose probabilistic based on Bayesian...

During the service life of offshore pipelines, different failure mechanisms like external/internal sheath damage, fatigue or corrosion may arise. Therefore, high operating costs need to be consumed confirm fitness pipeline system. This research deals with an enhanced Risk-Based Inspection (RBI) methodology certify integrity management system, a radical new way RBI practice is introduced for analysing steel and flexible pipeline. Case studies are executed designate give knowledge how...

The present investigation aims to propose a numerical model for assessing the complex damaging response of glass fiber-reinforced polymer- (GFRP-) reinforced concrete columns having hybrid fibers and confined with GFRP spirals (GFHF columns) under concentric eccentric compression. Fiber-reinforced (FRC) consists polyvinyl alcohol (PVA) polypropylene (PF). A total six GFHF circular were constructed cross section 250 mm height 1200 mm. commercial package ABAQUS was used finite element analysis...

COVID-19 coronavirus disease is the latest virus in new century. The World Health Organization- WHO organization announced that a pandemic leads to thousands of death short time spam. A quick and accurate diagnosis shows an important role its prevention. This study based on fusion-based Self-Diagnosis Expert System Empowered by Leven-berg Marquardt Algorithm for diseases. has been implemented classification different symptoms diseases relates results their diagnosis. MatLab software was used...

Many methods have been used in the past two decades to detect crack damage steel joints of offshore structures, but electromechanical impedance (EMI) method is a comparatively recent non-destructive that can be for quality monitoring weld structural joints. The EMI ensures direct assessment, analysis and particularly recognition dynamics by acquiring its EM admittance signatures. This research paper first briefly introduces theoretical background method, followed carrying out experimental...

Limited research is available in the literature for exploring axial compressive behavior of circular concrete columns confined by both external CFRP wraps and internal transverse steel reinforcement (SCC columns). The main objective present work to develop an empirical model analytical predicting strength SCC considering interaction between composite confinement action. An extensive experimental database 76 has been developed from work. A general regression analysis method curve-fitting...

Wire ropes are widely observed in many industries such as marine engineering and civil engineering, a type of structure that can bear huge axial force. There various kinds wire practical corresponding to different usage scenarios. This paper focuses on 6 × 36SW + 1WR with diameter 16 mm. The mechanical properties the rope investigated by experimental, theoretical, numerical methods. stress–strain curve ultimate strength steel obtained test compared results from finite element simulation....

Design criteria, and risk evaluation for marine structures, over continental shelf slope might be affected by currents associated with internal waves. The derivation of design criteria requires long time series at very high sampling rates commonly not available. Therefore, methodologies to derive those are required. In this paper, an approach based on numerical modelling is proposed as a proof-of-concept. Sulu Sea was selected test the capability model simulate currents. Model results were...

Abstract In past years, offshore oil and gas accidents have often occurred. Environmental hazards the capability of turning into very difficult to manage in addition with modern technology limits lack a fail-safe operation that can identify, control terminate accidents. However, crude also natural search development is expanding deep-water moving promptly subsea production systems. (SPS). Though, complicate equipment material besides frequency disasters stimulated consideration onto risk...

This study aims to investigate the structural performance of glass fiber reinforced polymer (GFRP) recycled aggregate concrete (RAC) columns (GFRAC columns) under different loading conditions. The GFRAC is compared with steel rebars (STRAC columns). Eighteen samples geometric measurements 250 mm and 1150 for diameter height, correspondingly, were fabricated including nine GFRP hoops hoops. results depicted that average axial load-carrying capacity was 7.8% lesser than STRAC columns....

The detrimental consequences of expansive soils are more pronounced in areas having hot climate with low rainfall; most part Pakistan falls semi-arid zone. A study was under taken to find a cheap and simple method treating soils, mostly found southern Pakistanl. Hydrated lime is the cheapest options because it available abundance Pakistan. evaluated effects hydrated on compacted high plastic clay salt contents focus establishing suitable range against potentials for volume change, strength,...

To optimize utilization of the closed municipal solid waste (MSW) sites, there is a dire need to establish simple, reliable and cost effective testing methodologies. Characterization MSW sites difficult due non availability standard procedures limited worldwide experience. The shear strength probably most important parameter for design any structure on sites. Direct Shear Test has been widely used evaluation MSW. Because obvious limitations lab samples, Field Large Size Apparatus was...