JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING (UNIVERSITY OF TABRIZ)
Year:2017 | Volume:46 | Issue:2 (83)|Papers Count:9

1. Introduction: In this research, the hysteretic behavior of 14 inverted-V braces and their gusset plate connections subjected toinelastic cyclic loading is examined through analytical simulations. It was modeled in ABAQUS software and theanalysis type was static nonlinear analysis. Gusset plates with a constant thickness but with different sizes andshapes were used…..

Introduction: When a stream is partially obstructed by a bridge pier, the flow pattern around the pier is significantly changed.Changes in flow pattern are the cause scour around piers. Bridge pier scouring estimates, is an important parameterin the design of bridges because inattention to it may cause damage or reduce the life of the bridge [1-4]. The safeand economical design of bridge piers requires accurate prediction of the maximum scour depth around theirfoundations [5]….

1. Introduction: Orifices are historically used in different hydraulic structures for flow regulation and removal of sediments fromreservoirs. The performance of orifices in drawdown flushing to increase the lifetime of dams is vital. Anayiotos etal. [1] performed extensive measurements of the velocity contours upstream of an orifice….

Self-compacting concrete, PVC pipe wastes, In situ tests, Ultrasonic, Core test1. IntroductionWide attempts have been performed to quantitative and qualitative control on concrete strength in structures anddifferent methods have been innovated to estimate the in situ concrete compressive strength. On the basis of thesemethods, it can be divided into two groups consisting non-destructive and semi-destructive methods….

1. Introduction: Today, air pollution is considered as an important and challenging problem in the megacities all over the world.It is usually caused due to industrialization, urbanization, rapid development in traffic and increasing amounts ofanthropogenic emissions. Urban air pollution in developing countries has been represented as a growing problem forcommunities. Reliable forecasting of air pollution would allow taking more efficient countermeasures to prevent airpollution crisis and protect public health.

Introduction: Prediction of flow field in compound channel is an important task for hydraulic researches because of the threedimensional nature of the flow. In compound channels with prismatic floodplains, the main feature consists of theinteraction effect between the fast moving flow in the main channel and the slow moving flow on the floodplains….

1. Introduction: In recent years, extensive research has been carried out on concrete filled steel tubes (CFST). The sub sequent results indicate the superiority of concrete filled steel tubes in relation to reinforced concrete or steel members. This section type offers multiple structural advantages such as increasing the loading capacity, higher value of absorbed energy, ductile deformation, seismic resistance, and sufficient damping….

1. Introduction: In this research a neural network algorithm is used to process information of numerous nonlinear dynamicanalyses data so that the damage induced by an earthquake (similar to earthquakes of this study) in a structure can beobtained in an acceptable range of accuracy by spending much less time than the computation time for actualnonlinear analysis of the structure [1]…..

1. Introduction: Shape Memory Alloys (SMA) are smart and novel materials that exhibit variable stiffness and strengthassociated with their different polycrystalline phases. The Shape Memory Effect (SME) and Superelastic Effect (SE)are two distinct properties that make SMA a smart material. Shape memory effect (free recovery effect) means that alarge (pseudo-) plastic deformation can be reversed by heating. If the going back is prevented by, e.g., concrete, astress in the SMA results (constrained recovery effect) [1]. A Superelastic SMA can restore its initial shapespontaneously even from its inelastic range upon unloading….