Seismic performance analysis and rehabilitation applications for a historical masonry building through field works and experimental investigations

Historic buildings and monuments are an important part of our cultural heritage that must be protected and their sustainability ensured, especially when earthquakes occur. In this paper, a technique that uses structural steel frames is proposed as one way of strengthening unreinforced masonry (URM) in historical buildings. The idea underpinning this technique is to reduce the earthquake displacement demand on non-ductile URM walls by attaching steel frames to the building floors from inside. These frames run parallel to the structural system of the building and are fixed at their base to the existing foundation of the building. Furthermore, they are constructed rapidly, do not occupy architectural space, save the building’s historic fabric, and can be easily replaced after an earthquake if some minor damage ensues. The proposed technique was applied to a five-story historical masonry building in Istanbul. The results of seismic performance analysis indicate that even though the building has plan irregularities, the proposed steel frames are able to effectively enhance the building’s seismic performance by reducing inter-story drifts and increasing lateral stiffness and strength.

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Homogenization of Ancient Masonry Buildings: A Case Study

Applied Sciences ◽

10.3390/app10196687 ◽

2020 ◽

Vol 10 (19) ◽

pp. 6687

Author(s):

Simona Di Nino ◽

Daniele Zulli

Keyword(s):

Structural Model ◽

Pure Shear ◽

Experimental Investigations ◽

Finite Element Models ◽

Masonry Building ◽

Dynamic Mechanisms ◽

Global Dynamic ◽

Historical Masonry ◽

Constitutive Parameters

With the aim of evaluating local and global dynamic mechanisms of a vast and historical masonry building, a homogeneous structural model is proposed here. It is realized with the assembly of othotropic plates and Timoshenko and pure shear beams as well. The identification of the constitutive parameters is carried out after realizing refined finite element models of building portions, and imposing energy or displacement equivalence with the corresponding homogeneous versions, depending on the complexity of the involved schemes. The outcomes are compared with those provided by experimental investigations, and help to give insight and interpretation on the dynamic behavior of the building.

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Preservation of Historical Masonry Building by House Moving

Concrete Journal ◽

10.3151/coj.55.8_668 ◽

2017 ◽

Vol 55 (8) ◽

pp. 668-673

Author(s):

T. Kitamura ◽

K. Tohkai ◽

F. Kawagishi ◽

M. Onishi

Keyword(s):

Masonry Building ◽

Historical Masonry

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Study on Rational Ratios of Lateral Stiffness for Masonry Building with Frame Structure at First Two Stories

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.2012 ◽

2012 ◽

Vol 174-177 ◽

pp. 2012-2015

Author(s):

Xiao Long Zhou ◽

Ying Min Li ◽

Lin Bo Song ◽

Qian Tan

Keyword(s):

Seismic Performance ◽

Time History ◽

Shear Wall ◽

Calculation Model ◽

Frame Structure ◽

Wall Structure ◽

Masonry Building ◽

Lateral Stiffness ◽

Stiffness Ratio ◽

Lateral Stiffness Ratio

There are two typical seismic damage characteristics to the masonry building with frame shear wall structure at first two stories, and the lateral stiffness ratio of the third storey to the second storey is one of the key factors mostly affecting the seismic performance of this kind of building. However, some factors are not considered sufficiently in current Chinese seismic codes. According to the theory of performance-based seismic design, the seismic performance of this kind of structure is analyzed in this paper by taking time-history analysis on models which with different storey stiffness ratios. The results show that when the lateral stiffness ratio controlled in a reasonable range, the upper masonry deformation can be ensured in a range of elastic roughly, and the bottom frame can be guaranteed to have sufficient deformation and energy dissipation capacity. Finally, according to the seismic performance characteristics of masonry building with frame shear wall structure at first two stories, especially the characteristics under strong earthquakes, a method of simplified calculation model for the upper masonry is discussed in this paper.

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