Journal of Structural Engineering and Geo-Techniques
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Seismic Assessment of a Multi-Span RC Bridge with Randomly Scoured Piers
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2023-10-01)A multi-hazard investigation approach is a vital requirement for a realistic risk assessment of infrastructures. The combined impact of scouring and earthquake can result in a distinctive effect on the performance of a ...
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Numerical Parametric study of Geosynthetic-Gabion walls under different surcharge loads
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2023-10-01)The finite element procedures are extremely useful in gaining insights into the behavior of reinforced soil retaining walls. In this study, a validated finite element procedure was used with Abaqus for conducting a series ...
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Numerical Simulation of the Segmental Tunnels Performance in the Swelling rocks
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2023-10-01)In this research, the performance of tunnels with segmental lining in swelling rocks have been studied. In this regard, the way segments are arranged in relation to each other, how the segments are connected along the ...
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The Necessity of Integrating Soil Treatment Systems in BIM from Design to Final Construction
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2023-10-01)In projects that involve surcharge and prefabricated vertical drains (PVDs) systems for the treatment of weak underlying layers, embankment failures, tension cracks, and differential settlements, surficial heaves, and ...
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A Parametric Study of Interactions Between Liquefaction Sand Lenses and Shallow Tunnels Under Earthquake Loads
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2023-10-01)If the saturated sand lenses are placed around the tunnels under the force of the earthquake, liquefaction will occur in them. This will cause settlement of the ground surface and changes in forces and anchors on the tunnel ...
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Conceptual Analysis and Design and Experimental Construction of a Portable Emergency Relief Bridge
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2023-10-01)For a long time, our country has faced natural disasters. In recent years, it has imposed various levels of damages on the country, including those caused by wars (military maneuvers) and natural disasters (earthquakes ...
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Numerical Investigation of the Limit Equilibrium Method in Tunnel Stability Using Finite Element (FEM)
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2022-07-01)The upper bound solution of the factor of safety is obtained by optimization calculation. To evaluate the feasibility of the method proposed in this paper, it was compared with the safety factor calculated by the marginal ...
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Effect of Basalt and Polypropylene Fibers on Unconfined Compressive Strength of Cement-Stabilized clay, an Experimental Approach
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2022-07-01)So far, many studies have been done on the performance of conventional chemical stabilizers such as cement, lime, fly ash or other chemical additives. However, very limited researches were conducted on the mechanical ...
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An Economical and Behavioral Comparison of Steel Special, Intermediate, and Ordinary Moment Resisting Frames
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2022-07-01)The Iranian Standard of Seismic Design of Structures No. 2800, IBC 2018, ASCE 7-16 and AISC 341-16 suggest that a response factor, R (also referred to as the R-factor), should be used as a measure to account for some ...
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Seismic Fragility Analysis of RC Continuous Girder Bridges Using Artificial Neural Network
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2022-07-01)This research aims to develop seismic fragility curves for small- and medium-sized concrete bridges. Fragility curves were generated as a function of the probability of reaching or exceeding a specific limit state in terms ...
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Effects of Structure Height on Seismic Demands of Under-designed RC Frames Considering Soil-Structure Interaction
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2022-07-01)Existing under-designed structures, which have been built due to the past insufficient constructional knowledge, are an important issue and anticipation of their dynamic responses to seismic events may be a cumbersome task. ...
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Cyclic Behavior of Precast Post-Tensioned Concrete Shear Wall with and Without Opening
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2022-07-01)Innovative Precast Post-Tensioned Concrete Shear Wall (PPCSW) comprises two columns as boundary elements and a main precast shear wall. Although, there have been some researches about the cyclic behavior of the PPCSWs, the ...
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Comparison of Three Concrete Structural System Using AHP Method
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2021-07-01)For selecting the appropriate structural concrete prefabricated system, construction managers have to identify and extract the most important and most effective features. This paper addresses how the best system can be ...
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Compressive Strength and Ductility of Concrete Wrapped by CFRP
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2021-07-01)Existing reinforced concrete (RC) columns may be structurally deficient due to variety of reasons such as improper transverse reinforcement, flaws in structural design, insufficient load carrying capacity, etc. Fiber ...
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Examining the Mixing Plan and the Results of the Plastic Concrete
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2021-07-01)In order to control seepage from the dam, various methods are used to reduce water seepage. One of the methods of reducing the permeability of the water according to its material is building cut-off walls and filling them ...
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Evaluation of the Collapse Fragility Curve of the Moment Resisting Steel Frames with Rigid and Semi-rigid Connections under Near-Field Earthquake Records
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2021-07-01)One of the major impacts of near-field earthquakes is a concentration of rupture on the limited number of stories and structural elements beyond the expected. Therefore, predicting the distribution of quantitative parameters ...
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Modeling of Accumulated Energy Ratio (AER) for Estimating LiqueFaction Potential Using Artificial Neural Network (ANN) and Gene Expression Programming (GEP) (using data from Tabriz)
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2021-07-01)Presenting a model specific to the city of Tabriz to estimate the liquefaction potential due to the region's seismicity and the high groundwater level can be effective in dealing with and predicting solutions to deal with ...
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Equivalent Viscous Damping in Steel Structures Equipped with Dampers.
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2021-07-01)Determination of equivalent viscous damping (EVD) is an important step in the direct displacement-based design (DDBD) method. This study aims to investigate whether the proposed method used in the equivalent lateral force ...
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Stress Analysis of the Scoliosis Disorder.
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2021-06-01)Scoliosis is a spine irregular deviation, which known an idiopathic ailment among children and adolescents. Indeed, applyingloads on the human spine and the capacity of the vertebral column should be tretated as random ...
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Seismic Hazard Analysis of Golsar district in Rasht Metropolis.
(Civil Engineering & Construction Research Center (CCRC), QIAU, 2020-12-01)Golsar is located in north-west of Rasht the capital city of Guilan province. This region, according to standards 2800, is identified among the regions with relatively high risk of earthquake. A set of historical and ...
