We establish an elaborate numerical model with which to investigate the deformation characteristics of segmental lining. The contains reinforcement and connecting bolts that previous studies have generally neglected. validated parameters using a full-scale test result. Based on this model, we studied Convergence, joint deformation, bolt stress, stress were systematically analyzed under differen...

Past earthquakes have demonstrated that old RC bridges may be seismically vulnerable. Bridge responses during the last decades illustrated the necessity of the seismic assessment of bridges especially those which were designed with old codes. In this research an existing concrete bridge representative of the most common bridges in the highway system in Iran are studied. Push over and nonlinear ...

The objective of this review to be submitted in two independent parts, for steel frames and for RC frames, is to compare their structural performance with respect to the proposed N2-method, and so also of the consequent convenience of using pushover methodology for the seismic analysis of these structures. A preliminary investigation is presented on a pushover analysis used for the seismic perf...

In recent years, destructive earthquakes have shown the deficiencies of the existing buildings. One of the most effective mechanisms for dissipating the earthquake energy is inelastic deformation of the steel components. The objective of this research is to study the application of metallic dampers for dissipation of the earthquake energy and to investigate the behavior of concrete structures i...

Three-dimensional higher-order topological insulators can have topologically protected chiral modes propagating on their hinges. Hinges with two copropagating serve as a ``beam splitter'' between hinges only single mode. Here we show how such crystal, Ohmic contacts attached to its hinges, be used realize Mach-Zehnder interferometer. We present concrete calculations for lattice model of first-o...

Abstract The effect of the exposed length piles supporting bridges crossing waterways on spread inelasticity along pile shaft compared with extent plasticity in body column, and hence precedence formation plastic hinges substructure system is paramount importance. Plastic may form ideally preferably at bottom column just above cap, or undesirably either pile’s head any other section within be i...

The work is devoted to the analysis of one possible limit states, for which scenario collapse floor over a remote column, as result general rancake-type occurs. An approximate method assessing progressive reinforced concrete slab multi-story building, will receive an impact from falling fragments failed structures, proposed. technique's underpinning dynamic simplified module motion, form assume...

in the realistic manner, piles are similar to the slender columns that soil around them acts as a lateral support. the piles situated in the liquefiable soil layers, loss their lateral supports due to the liquefaction resulted from the seismic ground motion. in this case, pile has the potency of axial instability similar to the unsupported columns. this instability can lead to the lateral buckl...