In-plane drift capacity at near collapse of rocking unreinforced calcium silicate and clay masonry piers

In recent years, seismic assessment of existing unreinforced masonry (URM) structures is being increasingly based on nonlinear methods. The in-plane displacement capacity represents one of the most crucial yet still debated features of the nonlinear behaviour of URM piers. International codes often employ empirical models to estimate the pier...

Sequentially linear analysis with equivalent frame method to simulate unreinforced masonry structures

This research investigates how the equivalent frame method in combination with a sequentially linear analysis can be used to model the behaviour of a façade of an unreinforced masonry structure, subjected to a lateral pushover load. The experimental data of the two-story building experiment at the University of Pavia is used.<br/>Two different...

Monitoring of progressive damage in buildings using laser scan data

Vulnerability of buildings to natural and man-induced hazards has become a main concern for our society. Ensuring their serviceability, safety and sustainability is of vital importance and the main reason for setting up monitoring systems to detect damages at an early stage. In this work, a method is presented for detecting changes from laser...

Quasi-static cyclic two-way out-of-plane bending tests and analytical models comparison for URM walls

Out-of-plane failure is one of the most important mechanisms for unreinforced ma-sonry (URM) structures to be prevented in the seismic areas. The one-way out-of-plane bend-ing failure mechanism has been studied by several authors. The two-way bending failure mechanism has received much less attention and only few formulations for specific cases...

A Comparative study on the evaluation of different testing techniques: Evaluating the mechanical properties of masonry

To accurately assess the performance of existing unreinforced masonry (URM) structures, the mechanical characteristics of masonry under compressive loading are required. The compression properties of existing URM can be evaluated through different methods, either performing destructive tests (DTs) or slightly destructive tests (SDTs). DTs can be...

Blind prediction of a cyclic pushover test on a two-storey masonry assemblage: a comparative study

In recent years induced seismicity in the north of the Netherlands has considerably increased. The built environment in the region mainly consists of unreinforced masonry (URM) buildings. Those buildings were not designed for seismic loads and have specific characteristics, that limit their seismic performance. In early 2017 a quasi-static...

Mechanical characterisation of wall tie connection in cavity walls

The assessment of the seismic response of unreinforced masonry (URM) buildings has been a popular topic all over the world in the last decades. In recent years, induced seismicity in the north of the Netherlands increased considerably and introduced seismic risk also in this country. The built environment in the region is mainly composed by...

A multiscale experimental characterisation of Dutch unreinforced masonry buildings

In recent years, induced seismicity in the north of the Netherlands significantly increased. As a consequence, the seismic assessment of the built environment, which mainly consists of unreinforced masonry (URM) structures not designed for seismic loads, became of high relevance. Within this context, an extensive multiscale testing program has...

Impact on Seismic Capacity of Unreinforced Masonry Houses- by varying the Geometrical Parameters of Terraced House

Large-scale testing program for the seismic characterization of Dutch masonry walls.

The evaluation of the seismic response of unreinforced masonry buildings is a popular topic all over the world. In recent years, also the Netherlands started to face seismic risk, since the induced seismicity in the north of the country considerably increased (the gas extraction started in 1963, and earthquakes have occurred since the early ‘90s...

Literature review on the assessment of masonry properties by tests on core samples

Starting point in this research is to find a quick and non-destructive method to characterize the mechanical properties of existing masonry. Tests on cylindrical cores have been recently introduced as a novel in-situ testing method to identify the properties of existing clay brick masonry. Currently, some researchers reported promising results,...

Cyclic pushover test on an unreinforced masonry structure reseambling a typical Dutch terraced house

During the last years, induced seismicity in the northern part of the Netherlands increased and the seismic assessment of unreinforced masonry (URM) structures became an important issue. As the problem is recent, the current building stock is not designed to withstand earthquakes and national guidelines are under development, but currently not...

A strengthening system for Groningen's unreinforced masonry buildings: Fibre Reinforced Cementitious Matrix: Analytical and Numerical analysis

Existing masonry buildings represent one of the most vulnerable building typology if subjected to seismic actions. In the Groningen region a greater part of the building stock is represented by URM masonry buildings, where these structures were generally designed for gravity loads only. As a consequence of the induced seismicity in the study...

Modelling the seismic response of an unreinforced masonry structure

One of the tests in the ESECMaSE project is the large scale earthquake test on a building. The finite element model that is discussed in this thesis is based on this pseudo-dynamic test. The material model follows from a macro modelling approach and has smeared-cracks. The mode shape and eigenfrequencies are obtained through an eigenvalue...

Validation of efficient numerical model for out-of-plane bending of unreinforced masonry walls

This study investigates four numerical models to approximate the static and dynamic resistance of an unreinforced masonry wall loaded in one-way out-of-plane bending. From validation with experimental data it was found that for the combination of shell and interface elements with discrete cracking the static and dynamic behaviour of unreinforced...

Simulation of masonry beams retrofitted with engineered cementitious composites