Practical Simulation Tools for the Seismic Analysis of Timber-Framed Masonry Structures

2015 ◽  
pp. 133-148 ◽  
Author(s):  
Leonidas Alexandros S. Kouris
Keyword(s):  
Seismic Analysis ◽  
Masonry Structures ◽  
Simulation Tools

scholarly journals Structural renovation of residential building in Zagreb after the 22 March 2020 earthquake

2021 ◽  
Vol 73 (06) ◽  
pp. 633-648
Author(s):  
Stjepan Lakusic
Keyword(s):  
Seismic Analysis ◽  
Pushover Analysis ◽  
Residential Building ◽  
Structural Condition ◽  
Static Method ◽  
Seismic Resistance ◽  
Masonry Structures ◽  
Assessment Report ◽  
Nonlinear Static ◽  
Structural Condition Assessment

The phases that must be completed so that a building damaged in earthquake that struck Zagreb on 22 March 2020 can be renovated and strengthened to the required level of seismic resistance are presented in the paper. All phases are therefore presented, starting from the rapid and then detailed inspection, and continuing with preparation of the structural condition assessment report, preparation of renovation design and, finally, ending with realisation of work with expert supervision. A special attention is paid to structural analysis that is conducted using a nonlinear static method based on displacements, the so called pushover analysis, which is considered to be one of the most appropriate methods for seismic analysis of existing masonry structures. All procedures conducted in the scope of this renovation were realised in accordance with legislation that entered into force after the earthquake.

scholarly journals Non-Linear Analysis of Inter-Story Pounding between Wood-Framed Buildings during Ground Motion

Geosciences ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 488 ◽  
Author(s):  
Wojciech Migda ◽  
Marcin Szczepański ◽  
Natalia Lasowicz ◽  
Anna Jakubczyk-Gałczyńska ◽  
Robert Jankowski
Keyword(s):  
Ground Motion ◽  
Structural Damage ◽  
Seismic Analysis ◽  
Longitudinal Direction ◽  
Linear Analysis ◽  
Masonry Structures ◽  
The Finite Element Method ◽  
Steel Reinforced Concrete ◽  
Total Destruction ◽  
Non Linear

Pounding between adjacent buildings during ground motion may result in structural damage or lead to total destruction of structures. The research on the phenomenon has recently been much advanced; however, the analyses have been carried out only for concrete, steel, and masonry structures, while pounding between wooden buildings has not been studied so far. The aim of this paper is to show the results of detailed non-linear seismic analysis of inter-story pounding between the wood-framed buildings modelled by using the finite element method. Firstly, the modal analysis of the structures was conducted. Then, the detailed non-linear analysis of earthquake-induced collisions between two wood-framed buildings of different heights was carried out. The results of the analysis indicate that the behavior of both structures in the longitudinal as well as in the transverse direction is significantly influenced by interactions. The response of the taller building is increased in both directions. On the other hand, the response of the lower building is decreased in the longitudinal direction, while it is increased in the transverse one. The results of the study presented in the paper indicate that, due to deformability of buildings made of wood, structural interactions may change their responses much more, as compared to steel, reinforced concrete, or masonry structures.

Seismic Vulnerability Assessment of Multistory Timber Braced Frame Traditional Masonry Structures

2012 ◽  
Vol 601 ◽  
pp. 168-172 ◽  
Author(s):  
Naveed Ahmad ◽  
Qaisar Ali ◽  
Muhammad Umar
Keyword(s):  
Dynamic Analysis ◽  
Seismic Vulnerability ◽  
Seismic Analysis ◽  
Pushover Analysis ◽  
Elastic Beam ◽  
Lateral Force ◽  
Experimental Results ◽  
Constitutive Law ◽  
Masonry Structures ◽  
Braced Frame

Research carried out on the seismic investigation of timber braced frame (TBF) masonry structures of traditional construction practice is presented, essential for seismic performance evaluation of such construction type using engineering approaches. An innovative simplified equivalent frame method (EFM) based on macro modelling approach is presented for nonlinear dynamic seismic analysis of TBF masonry structures. The modelling include EFM idealization of wall using stiff elastic beam-column element assigned with moment-rotation (M-θ) nonlinear lumped plasticity hinges. Earlier, the approach i.e. the EFM idealization and M-θ constitutive law, is calibrated with the experimental results obtained through quasi-static cyclic test on full scale walls. The technique is further extended herein for seismic dynamic analysis of multistory structures. Generalization of the technique for modelling walls of various geometry and loading is performed. It included nonlinear static pushover analysis of various case study walls, by means of SAP2000 calibrated earlier with experimental results, for the derivation of lateral force-deformability behavior towards the development of generalized M-θ constitutive law for TBF masonry walls. Three representative structures, from one to three storeys, are analyzed using a suite of ten natural accelerograms and incremental dynamic analysis technique. Structure fragility and resilience functions are derived using a fully probabilistic and dynamic approach. The structures analyzed in the present study represent TBF masonry wall structures, called as Dhajji-Dewari structures, common in Northern areas of Pakistan.

Finite Element Analysis of Seismic Resistance of Masonry Structure in Rural China

2013 ◽  
Vol 827 ◽  
pp. 328-333 ◽  
Author(s):  
Fang Tang
Keyword(s):  
Finite Element ◽  
Rural Areas ◽  
Seismic Analysis ◽  
Rural China ◽  
Failure Criteria ◽  
Seismic Resistance ◽  
Masonry Structures ◽  
Seismic Capacity ◽  
Element Analysis ◽  
Finite Element Software

Buildings with masonry structures in rural areas of China have been the most severely damaged ones in earthquake disasters. This paper has analyzed the failure characteristics of rural masonry buildings in earthquake by summarizing the existing researches of the seismic resistance of masonry structures in rural areas, with its focus on the research of the intensity from VI to X. The constitutive relation model of damage developed by Yang Weizhong is used for the seismic analysis of rural masonry structures in combination with the failure criteria for masonry structures. The finite element software ANSYS is applied for the simulation and the results show that the damage of China's rural masonry structures regularly tends to weaken from the bottom to the top, with the seismic capacity of horizontal walls superior to longitudinal walls. As for vertical walls, due to their weak capacity, damage immediately occurs to them even in medium intensity earthquakes.

scholarly journals Reliability of traditional timber-floor masonry buildings to seismic action

2020 ◽  
Vol 72 (10) ◽  
pp. 869-893
Keyword(s):  
Seismic Response ◽  
19Th Century ◽  
Seismic Analysis ◽  
Performance Based Design ◽  
Seismic Action ◽  
Masonry Buildings ◽  
Masonry Structures ◽  
Late 19Th Century ◽  
The Real ◽  
Design Earthquake

A considerable number of timber floor masonry structures, typical for construction practices of the late 19th century, were damaged in the earthquake that struck Zagreb on 22 March 2020. Due to the lack of reliable earthquake analyses of this type of structures, it is difficult to estimate the level of risk such buildings are exposed to in the case of design earthquake events. The results of seismic analysis of one such structure are presented in the paper. The analysis is based on displacements and is known as PBD (Performance Based Design). The real necessity, efficiency, and methods for improving seismic response of this type of structures, are discussed.

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