Katrin Beyer

Katrin Beyer, Alessandro Paparo

This article presents a new mechanical model for the non-linear force-displacement response of unreinforced masonry (URM) walls developing a flexural rocking mode including their displacement capacity. The model is based on the plane section hypothesis and ...

2015

Development of a displacement-based design approach for modern mixed RC-URM wall structures

The recent re-assessment of the seismic hazard in Europe led for many regions of low to moderate seismicity to an increase in the seismic demand. As a consequence, several modern unreinforced masonry (URM) buildings, constructed with reinforced concrete (R ...

Techno-Press2015

Einfluss der Randbedingungen auf das Verhalten aus der Ebene von Mauerwerkswänden (Influence of the boundary conditions on the out-of-plane response of URM walls)

Katrin Beyer, Filippo Lucca

2015

Loading protocols for structures designed for different behaviour factors

All the existing loading protocols have been developed independently of the value of the behaviour factor q that the structure has been designed for. Conservatively, a single loading protocol is adopted, for all q values, based on the structural system wit ...

2015

Future directions for reinforced concrete wall buildings in Eurocode 8

The current Eurocode 8 belongs to one of the most advanced international seismic design codes. This leading edge should be maintained in future revisions of the code while the code should become as user friendly as possible. This article makes several prop ...

2015

Evaluation of seismic assessment procedures for determining deformation demands in RC wall buildings

This work evaluates the performance of a number of seismic assessment procedures when applied to a case study reinforced concrete (RC) wall building. The performance of each procedure is evaluated through its ability to accurately predict deformation deman ...

Techno-Press2015

Limit states of modern unreinforced clay brick masonry walls subjected to in-plane loading

Katrin Beyer, Sarah Petry, Marco Tondelli

Recent research showed that the in-plane horizontal displacement capacity of unreinforced masonry (URM) walls depends on numerous factors that are not yet captured by current empirical drift capacity models; e.g., axial stress, shear span, geometry of the ...

Springer Verlag2015

Dynamic testing of a four-storey building with reinforced concrete and unreinforced masonry walls: Prediction, test results and data set

This paper presents the results of a series of shake-table tests on a half-scale, four-storey building with reinforced concrete (RC) and unreinforced masonry (URM) walls. Due to the lack of reference tests, the seismic behaviour of such mixed structures is ...

Springer Verlag2015

Cyclic test data of six unreinforced masonry walls with different boundary conditions

André-Gilles Dumont, Glauco Feltrin, Marc-Antoine Fénart, Katrin Beyer

Previous test data on unreinforced masonry walls focused on the global response of the wall. A new data set (Petry and Beyer 2014a; D01:10.5281/zenodo.8443) on six wall tests, which is publicly available, allows for linking global to local deformations of ...

2015

Defining a braking probability to estimate extreme braking forces on road bridges

A probabilistic approach is necessary to estimate the magnitude of the braking force that compares in terms of return period with the vertical traffic loads present in bridge design codes. A data set from a Danish Field Operational Test served as support t ...

2015

Modelling the seismic response of modern URM buildings retrofitted by adding RC walls

Katrin Beyer, Alessandro Paparo

Modern unreinforced masonry buildings with reinforced concrete slabs are often retrofitted by inserting reinforced concrete walls. The main advantages of this technique are the increase in strength and displacement capacity with respect to masonry structur ...

2015

Sensitivity of drift capacities of URM walls to cumulative damage demands and implications on loading protocols for quasi-static cyclic tests

Displacement-based seismic design and assessment procedures require as key input parameter estimates of displacement capacities of the critical elements. The displacement capacities of unreinforced masonry (URM) walls are typically determined by means of q ...

2015

Size effects in drift capacities of URM walls

Examining the results of a large set of quasi-static cyclic tests on unreinforced masonry (URM) walls showed that the drift capacity of URM walls reduces with increasing wall size. Such a size effect is of concern since most wall tests were carried out on ...

2015

Influence of spandrel modelling on the seismic assessment of existing masonry buildings

The paper discusses different modelling assumptions for spandrels in equivalent frame models and their effect on the global response of the wall. The topic is motivated by the following issues: i) reliable and practice oriented numerical tools constitute a ...

2015

Displacement-based seismic design of symmetric single-storey wood-frame buildings with the aid of the N2 method

Aurelio Muttoni, Katrin Beyer, Ioannis Sokratis Drakatos

This paper presents a new methodology for the displacement-based seismic design of symmetric single-storey wood-frame buildings. Previous displacement-based design efforts were based on the direct displacement-based design approach, which uses a substitute ...

2015

Mechanical Model for flexural behaviour of slab-column connections under seismically induced deformations

Reinforced concrete (RC) flat slabs supported on columns are one of the most widely used structural systems for office and industrial buildings. In regions of medium to high seismic risk RC walls are typically added as lateral force resisting system and to ...

4th fib Congress, Mumbai2014

Experimental investigation on seismic behaviour of slab-column connections

Aurelio Muttoni, Katrin Beyer, Ioannis Sokratis Drakatos

Code design of slab-column connections to resist seismically induced drifts is currently based on empirical relationships for both moment and deformation capacity. The results of tests on slabcolumn connections are however sensitive to the conception of th ...

Proceedings of the 10th fib International PhD Symposium in Civil Engineering, Quebec2014

Understanding Poor Seismic Performance of Concrete Walls and Design Implications

The 2010-2011 Canterbury earthquakes in New Zealand revealed (1) improved structural response resulting from historical design advancements, (2) poor structural performance due to previously identified shortcomings that had been insufficiently addressed in ...

2014

Loading protocols for European regions of low to moderate seismicity