This study investigates the nonlinear dynamic response of masonry bridge ‘Ponte delle Torri’ in Spoleto, aiming at assessing seismic performance structure and evaluating occurring damaging mechanisms. A 3D Finite Element (FE) macromechanical procedure implemented FE program FEAP is adopted to model bridge. To reproduce typical microcracking process evolving material when subjected external load...

The main purpose of this work is to compare different criteria for the seismic strengthening of r.c. framed buildings in order to find the optimal combinations of these retrofitting techniques. To this end, a numerical investigation is carried out with reference to the town hall of Spilinga (Italy), a r.c. framed structure with an L-shaped plan built at the beginning of the 1960s. Five structur...

In India, the frequency of occurrence of earthquakes is more, especially in Himalaya, northeast India and Gujarat region. Therefore it becomes essential to estimate the seismic inputs for such earthquakes to reduce the structural damage. From engineering point of view, the most sought-after data is the strong motion accelerograms (SMA), recorded in the places where earthquake has occurred. The ...

This paper presents efficient models in the area of damage potential classification of seismic signals. After an earthquake, one of the most important actions that authorities must take is to inspect structures and estimate the degree of damages. The interest is obvious for several reasons such as public safety, economical recourses management and infrastructure. This approach provides a compar...

Abstract The Italian code requires spectrum compatibility with mean for a suite of accelerograms selected time-history analysis. Although these requirements define minimum acceptability criteria, it is likely that code-based non-linear dynamic analysis going to be done based on limited number records. Performance-based safety-checking provides formal basis addressing the record-to-record variab...

This paper proposes an innovative seismic design approach for shallow rectangular cut-and-cover underground subway or railway stations. The traditional is to rigid frame-like structures by connecting rigidly the main horizontal and vertical structural elements (side walls, top, bottom intermediate slabs, central columns); on contrary, proposed strategy consists of joining them means hinged slid...

The aim of this study is to compare the seismic response reinforced concrete (RC) symmetric buildings, with a varied number stories, strengthening three types passive energy dissipation systems, as tuned mass dampers, viscous and friction dampers. paper presents an overview design optimization object minimizing certain functions: (i) maximum displacement at top structures, (ii) base shear loads...

Qualification tests on the vibrations of on-board equipment depend ability shaker used to reproduce as precisely possible excitation profiles stipulated by standards, given that real operational conditions are generally multiaxial. Using a set six measured linear accelerations original method proposed permits determining six-axial displacements combining three translations and rotations. Thus, ...

The research presented in the work aims to assess seismic response of three different taxonometric sites, identified by method engineering and geological analogies within territory Kyiv, loads with spectral content peak amplitude from 0.01 g 0.06 g. Assessment influence local soil conditions on intensity earthquakes is an important task earthquake-resistant design construction. layer at base st...

Earthquakes cause irreparable damages to the built environment, which has led bridge engineers develop structural control systems mitigate damage and improve vibration reduction in real-time. Among systems, base isolation is one of most commonly used passive strategies for seismic protection civil structures. Yet, it lacks real-time adaptability, lower energy dissipation, poor performance durin...