Ductile RC frames are often considered to have superior seismic performance even with infills. However, the of this type structure needs be reassessed considering additional shear requirements produced by infills-column interaction and increased hazard due impact infills on vibration period structure. This paper presents a performance-based earthquake engineering framework aimed at assessment c...

To study the effect of local corrosion prestressed steel strands on shear failure mode and bearing capacity concrete beams, unilateral in four post-tensioning (PC) beams are corroded, test PC performed. Moreover, a simplified calculation method for with diagonal bars is proposed considering cross-sectional reduction bars, degradation mechanical properties, damage concrete. Results shows that cr...

Abstract By applying asymmetrical lateral impact forces on RC specimens, the specimens’ cross-sectional shape is analyzed. The effectiveness of resistance to was examined using a drop hammer. Performing research factors that led failure various specimen shapes and dynamic responses they exhibited. In experiment, eight circular square specimens were used. Includes method failure, force, deflecti...

Application of fiber-reinforced polymer (FRP) reinforcement in concrete beams may cause large deflection and crack width, as well low shear capacity ductility due to relatively small stiffness FRP materials. To avoid these unfavorable factors evaluate the behavior FRP-reinforced structural members, a high-performance strain-hardening cementitious composite (SHCC) is introduced substitute conven...

After being processed into a certain shape by stirrup bending machine, steel bars are used as the skeleton of reinforced concrete in construction. The accuracy their directly affects bearing capacity concrete. In order to improve springback angle after bending, this paper focuses on optimizing structural parameters bar machine and controlling bars. influence support shaft diameter, crankshaft r...

Abstract: Six specimens of concrete frame columns reinforced by post-build wing walls on the opposite faces were designed and fabricated to investigate their seismic performance. Axial compression ratio was considered as the critical factor and divided into 0.31, 0.36, and 0.40 before reinforcement. HRB400 steel grade was used to the longitudinal bar and the ratio of longitudinal reinforcement ...

We are masters of the unsaid words, but slaves of those we let slip out. Winston S. Churchill The US health system is in the midst of a large (and now unpredictable) transformation. There are, in development, a large number of metrics to assess the quality and cost of cardiac care. Assuming these continue to be employed, they will impact on physician and hospital reimbursement, changing the inc...

Shear failure of reinforced concrete (RC) members belongs to brittle and has always been concerned. In this paper, 16 existing shear strength models RC slender beams have selected comprehensively compared based on a set 781 experimental test results. These formulas from eight national codes published papers are mainly the semi-empirical or analytical models. results were collected 66 papers, ra...

An experimental study on the shear behavior of dune sand reinforced concrete (DSRC) deep beams was conducted to determine feasibility using (DS) in engineering. Nine DSRC were designed and thoroughly analyzed for failure modes, diagonal cracks, load–deflection curves this study. The results showed that strength ductility increased when DS replacement rate 30%, but opposite effect occurred 50%. ...