confined masonry buildings are used in rural and urban areas of iran. they performed almost satisfactoryduring past moderate earthquakes of iran. there is not a methodology in iranian seismic code (standard 2800-3rdedition) to estimate their capacities quantitatively. in line with removing this constraint, an attempt is made to studyin-plane behavior of two squared confined masonry walls with a...

This paper presents investigation carried out, including experimental and numerical studies, on low-rise shear-dominated brick masonry structures for the calculation of force reduction factor R. Basic experimental tests were conducted on masonry constituent materials for mechancial characterization. In-plane quasi-static cyclic tests were conducted on twelve full scale brick masonry walls, to u...

Abstract The behaviour of axisymmetric masonry shells can be simulated by a system forces constituted meridian acting in the vertical planes, and hoop circumferentially. A crucial component for assessment these structures using Modified Thrust Line Method (MTLM) is determination forces, whose computation strenuous, limiting practical application MTLM. Working around this limitation, current res...

There is still a large number of masonry arch bridges on the road and railway network. More than 80 % are over 100 years old so their service life has been exceeded significantly. The general focus paper to show method for strengthening restoration these bridges, especially if they have damaged by longitudinal cracks. performed using new spandrel walls from reinforced concrete stabilized transv...

Geometrically complex masonry structures (e.g., arches, domes, vaults) are traditionally built with scaffolding or falsework to provide stability during construction. The process of building such can potentially be improved through the use multiple robots working together in a cooperative assembly framework. Here robot is envisioned as both placement and external support agent fabrication – unf...

The paper presents a plastic analysis procedure based on the energy balance concept for performance based seismic retrofit of multi-story multi-bay masonry infilled reinforced concrete (R/C) frames with a ‘soft’ ground story using passive energy dissipation (PED) devices with the objective of achieving a target performance level of the retrofitted R/C frame for a given seismic hazard level at t...

an experimental study is conducted on three ½ scales, single-story, single-bay, frame specimens. the first specimen was a reinforced concrete frame with solid-brick infill. the second specimen was a reinforced concrete frame with hollow clay perforated-brick infill. the last specimen was a reinforced concrete frame without any infill. these three specimens were tested by pseudostatic method. di...