Because of difficulty in inspection and retrofit of foundation in comparison with other elements, the common design philosophy is to avoid any nonlinear deformation in the foundation. This paper shows that by employing controlled foundation nonlinearity, in predetermined sections with arrangements for inspection and retrofit, it is possible to reduce seismic demand on superstructure. Localizing...

In evaluating ultimate limit states for design, time-domain aeroelastic response simulations are typically carried out to establish extreme loads on offshore wind turbines. Accurate load prediction depends on proper modeling of the wind turbulence and the wave stochastic processes as well as of the turbine, the support structure, and the foundation. One method for modeling the support structure...

ground differential movements due to faulting have been observed to cause damage to engineered structures and facilities. although surface fault rupture is not a new problem, there are only a few building codes in the world containing some type of provisions for reducing the risks. fault setbacks or avoidance of construction in the proximity to seismically active faults, are usually supposed as...

Dynamic dam-foundation interaction is great important in the design and safety assessment of dam structures. Two classic boundary conditions, i.e., viscous-spring viscous boundary, are employed to consider radiation damping unbounded rock foundation. The input models seismic excitation derived. accuracy two conditions dynamic analysis foundation verified through using an impulsive load. influen...

Research regarding the teaching of reading for English as a Foreign Language (EFL) and English as a Second Language (ESL) is still ongoing. This study focused on metacognitive reading strategies for these learners, first revisiting the concept of metacognition as proposed by Flavell, and then going on to explain reading strategies that require metacognitive skills within three knowledge dimensi...

Little attention has been paid to the problems about portfolio keeping in English as a foreign language (EFL) writing, while the existing literature mostly focuses on the effects of portfolios on writing skills of learners, rather than those of teachers or pre-service teachers. This study aims to investigate the problems encountered and contributions of portfolios to the language skills of EFL ...