Investigation of structural safety of existing masonry healthcare facilities in Turkey

Korkmaz, Kasım Armağan; Nuhoğlu, Ayhan; Arısoy, Bengi; Çarhoğlu, Asuman Işıl

doi:10.1177/1077546311404732

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…Unreinforced masonry (URM) buildings did not perform as well as reinforced or confined masonry buildings in previous earthquakes (Klingner, 2006;Korkmaz et al, 2010Korkmaz et al, , 2012 as they are one of the weakest links of the entire building stock (Federal Emergency Management Agency, 2009). Unfortunately, many school buildings have been built by this technique.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance evaluation of unreinforced masonry school buildings in Turkey

Yılmaz

Tama

Bilgin

2012

Journal of Vibration and Control

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In this study a seismic performance assessment of school buildings, which have been built in accordance with template unreinforced masonry school projects in Turkey, has been conducted. For this purpose, the most widely used three template projects have been selected. The seismic performances of these buildings have been evaluated for various earthquake levels. This evaluation has been carried out in compliance with the Turkish earthquake code entered into force in 2007. The effects of material strength and plan features on the performance of masonry school structures have been investigated within the scope of this study. It has been concluded that school buildings with template design are far from satisfying the required performance criteria. For spectral acceleration of 0.80 g, which is expected in a 475 year period in the seismic Zone 1, the average exceedance ratio for life safety performance limit is more than 80% considering different material strengths. Upon evaluation of the results a building capacity index is proposed for rapid seismic assessment of masonry school buildings.

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Section: Introductionmentioning

confidence: 99%

Seismic performance evaluation of unreinforced masonry school buildings in Turkey

Yılmaz

Tama

Bilgin

2012

Journal of Vibration and Control

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“…The second isotropic criterion (Figure 8) is the Von Mises modified isotropic failure criterion proposed by Syrmakezis et al [8,25] for the modeling of masonry under biaxial stress state and has been adopted by many researchers [165][166][167][168][169][170] assuming isotropic behavior for masonry material.…”

Section: Semi-empirical Isotropic Failure Criteriamentioning

confidence: 99%

Stochastic Vulnerability Assessment of Masonry Structures: Concepts, Modeling and Restoration Aspects

et al. 2019

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A methodology aiming to predict the vulnerability of masonry structures under seismic action is presented herein. Masonry structures, among which many are cultural heritage assets, present high vulnerability under earthquake. Reliable simulations of their response to seismic stresses are exceedingly difficult because of the complexity of the structural system and the anisotropic and brittle behavior of the masonry materials. Furthermore, the majority of the parameters involved in the problem such as the masonry material mechanical characteristics and earthquake loading characteristics have a stochastic-probabilistic nature. Within this framework, a detailed analytical methodological approach for assessing the seismic vulnerability of masonry historical and monumental structures is presented, taking into account the probabilistic nature of the input parameters by means of analytically determining fragility curves. The emerged methodology is presented in detail through application on theoretical and built cultural heritage real masonry structures. leading to a final approval (or rejection) of the decisions already taken for repair or strengthening of the existing structure. Step 8: Explanatory ReportThe last step, as a result of the proposed methodology, includes the detailed "Explanatory Report", where all the collected information, the diagnosis, including the safety evaluation, and any decision to intervene should be fully detailed. This document is essential for eventual future analyses and interventions' measures in the structure. Computational and Mathematical AspectsIn this section, the most basic analytical constitutive laws and numerical models required for the successful implementation of the proposed methodology are presented in detail. In particular, the finite element model for the macro-modeling of masonry structures, the failure criteria, the damage indices, the performance levels and the mathematical background of fragility curves are presented.

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“…Taking the fact into account that all materials under the train-induced vibration are in elastic state, so the elastic isotropic material is applied to analysis. Meanwhile, the masonry walls of the buildings are established in macro-model (Korkmaz et al, 2012). And for the wood truss in building 2, only the material property parallel to grain direction is considered.…”

Section: Introduction Of the Vibration Mitigation Projectmentioning

confidence: 99%

Three-dimensional dynamic analysis of ancient buildings with novel high damping isolation trenches

Li¹,

et al. 2021

Journal of Vibration and Control

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To improve the efficiency of conventional isolation trench and lighten the impact of the excavation on neighbor buildings, a novel high damping isolation trench is proposed. The viscoelastic braces equipped in the high damping isolation trench can dissipate the energy of ground-borne vibration while providing supporting force to ensure the stability of the soil on both sides. According to two actual ancient buildings, two types of high damping isolation trenchs with the plane shape of U and L are designed to solve the potential damages caused by long-term train-induced vibration. First, three-dimensional finite/infinite models based on these two buildings are established, respectively. Then, the energy dissipation characteristics are obtained by experiments. Through calculation, the control effects of the high damping isolation trenchs for these two buildings are investigated. The results indicate that the viscoelastic braces possess high energy dissipation capacity. After setting the high damping isolation trenchs around the structures, even at a small excavation depth, the acceleration and velocity responses of the two buildings are reduced significantly. Furthermore, the selected U-shaped and L-shaped trenches also show superiority compared with the conventional linear-shaped trench in this project.

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Investigation of structural safety of existing masonry healthcare facilities in Turkey

Cited by 6 publications

References 20 publications

Seismic performance evaluation of unreinforced masonry school buildings in Turkey

Seismic performance evaluation of unreinforced masonry school buildings in Turkey

Stochastic Vulnerability Assessment of Masonry Structures: Concepts, Modeling and Restoration Aspects

Three-dimensional dynamic analysis of ancient buildings with novel high damping isolation trenches

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