Adoption and implementation of Eurocode 8 as national standard for seismic design in the Balkan countries

2021 ◽  
Author(s):  
Roberta Apostolska ◽  
Adamantia ATHANASOPOULOU ◽  
Maria Luisa Sousa ◽  
Silvia Dimova
Keyword(s):  
Seismic Design ◽  
National Standard ◽  
Eurocode 8 ◽  
Adoption And Implementation ◽  
Balkan Countries

scholarly journals Parametric Analysis of Rotational Effects in Seismic Design of Tall Structures

2021 ◽  
Vol 11 (2) ◽  
pp. 597
Author(s):  
Milan Sokol ◽  
Rudolf Ároch ◽  
Katarína Lamperová ◽  
Martin Marton ◽  
Justo García-Sanz-Calcedo
Keyword(s):  
Seismic Design ◽  
Parametric Study ◽  
Tall Buildings ◽  
Soil Parameters ◽  
Eurocode 8 ◽  
Tall Structures ◽  
Rotational Components ◽  
Different Types ◽  
Depth Study

This paper uses a parametric study to evaluate the significance of the rotational components of Earth’s motion in a seismic design. The parametric study is based on the procedures included in Eurocode 8, Part 6. Although the answer to the question of when the effects of rotational components are important is quite a complex one and requires a more in-depth study, our aim was to try to assess this question in a relatively quick manner and with acceptable accuracy. The first part of the paper is devoted to derivation of a simple formula that can be used for expressing the importance of rotational components in comparison with the classic seismic design without their usage. The quasi-static analysis, assuming inertial forces, is used. A crucial role plays the shape of the fundamental mode of the vibration. Due to simplicity reasons, well-known expression for estimation of the first eigenmode as an exponential function with different power coefficients that vary for different types of buildings is used. The possibility of changing the soil parameters is subsequently included into the formula for estimation of the fundamental frequency of tall buildings. In the next part, the overall seismic analyses of complex FEM models of 3D buildings and chimneys are performed. The results from those analyses are then compared with those from simplified calculations. The importance of the soil characteristics for determination of whether it is necessary to take into account the rotational effects is further discussed.

Lateral Force Resisting Systems Made of Cold-Formed Steel Material: Proposal of Seismic Design Criteria for 2nd Generation of Eurocode 8

2021 ◽  
Vol 885 ◽  
pp. 127-132
Author(s):  
Sarmad Shakeel ◽  
Alessia Campiche
Keyword(s):  
Seismic Design ◽  
Shear Walls ◽  
Lateral Force ◽  
Background Information ◽  
Design Criteria ◽  
Eurocode 8 ◽  
Building Structures ◽  
Design Standards ◽  
Design Strength ◽  
Cold Formed Steel

The current edition of Eurocode 8 does not cover the design of the Cold-Formed steel (CFS) building structures under the seismic design condition. As part of the revision process of Euro-code 8 to reflect the outcomes of extensive research carried out in the past decade, University of Naples “Federico II” is involved in the validation of existing seismic design criteria and development of new rules for the design of CFS systems. In particular, different types of Lateral Force Resisting System (LFRS) are analyzed that can be listed in the second generation of Eurocode 8. The investigated LFRS’s include CFS strap braced walls and CFS shear walls with steel sheets, wood, or gypsum sheathing. This paper provides the background information on the research works and the reference design standards, already being used in some parts of the world, which formed the basis of design criteria for these LFRS systems. The design criteria for the LFRS-s common to CFS buildings would include rules necessary for ensuring the dissipative behavior, appropriate values of the behavior factor, guidelines to predict the design strength, geometrical and mechanical limitations.

scholarly journals Effect of Flexible Soil in Seismic Hazard Assessment for Structural Design in Kuala Lumpur

2019 ◽  
Vol 10 (1) ◽  
pp. 30-42
Author(s):  
Abu Bakar Nabilah ◽  
Chan Ghee Koh ◽  
Nor Azizi Safiee ◽  
Nik Norsyahariati Nik Daud
Keyword(s):  
Seismic Design ◽  
Hazard Assessment ◽  
Structural Design ◽  
Time History ◽  
Seismic Hazard Assessment ◽  
Eurocode 8 ◽  
Kuala Lumpur ◽  
Long Distance ◽  
Ground Acceleration ◽  
Building Safety

Kuala Lumpur, Malaysia, is considered to be safe against an earthquake threat. However, tremors felt by occupants due to long distance earthquakes from Sumatra has raised concern on building safety in this region. Consequently, Malaysia will adopt the Eurocode 8 for seismic design. The suitability of this code must be studied especially on the threat from far field earthquakes. Thus, site specific hazard assessment has been conducted on seven flexible soil sites in Kuala Lumpur, based on modified time history. The peak ground acceleration (PGA) falls in the category of very low seismicity, however, the amplifications are much higher than recommended by Eurocode 8. The period limits for maximum accelerations are also much higher compared to the value in the code, especially for flexible soils. Adoption of Eurocode 8 for seismic design in this region should be studied to include the effects of high period motions in flexible soils, especially on the amplification factors and its corner periods.

Comparison and Research on Seismic Performance between Guidelines for Seismic Design of Highway Bridges and Eurocode 8 for Seismic Design of Bridges

2010 ◽  
Vol 163-167 ◽  
pp. 4395-4400
Author(s):  
Ben Yan Lu ◽  
Bo Quan Liu ◽  
Ming Liu ◽  
Guo Hua Xing
Keyword(s):  
Seismic Design ◽  
Future Study ◽  
Response Spectrum ◽  
Highway Bridges ◽  
Lessons Learned ◽  
Performance Criteria ◽  
Eurocode 8 ◽  
Existing Problems ◽  
Earthquake Action ◽  
Current Code

Earthquake codes have been revised and updated in recent years. The issue and implementation of the guidelines for seismic design of bridges have attracted interests and attentions of many researchs at home and abroad. In this paper, it is compared that the provisions about performance criteria, seismic design categories, response spectrum and earthquake action between guidelines for seismic design of highway bridges and Eurocode 8 for bridges. The main purpose of this study is to investigate the differences caused by the two codes in performance criteria, seismic design categories, response spectrum and earthquake action. The results indicate that it is similar in performance criteria, seismic design categories and response spectrum between guidelines for seismic design of highway bridges and Eurocode 8 for bridges. Based on the lessons learned from significant earthquakes in the last few years, the existing problems of the current code are pointed, and the trends of future study are discussed.

scholarly journals Teaching and learning foreign languages in Uzbekistan. CEFR: learning, teaching and assessment

2020 ◽  
Vol 3 (1) ◽  
pp. 57-61
Author(s):  
B. Tolibjonov ◽  
Sh. Samandarov ◽  
D. Umirzakova ◽  
Y. Yunusova
Keyword(s):  
Foreign Language ◽  
Teaching And Learning ◽  
English Language ◽  
Language Education ◽  
Foreign Language Education ◽  
Foreign Languages ◽  
National Standard ◽  
Education Standards ◽  
New Era ◽  
Adoption And Implementation

The Common European Framework of Reference (CEFR) is the most comprehensive, and the most widely used set of foreign language education standards throughout the world. The recent reforms in foreign language teaching in Uzbekistan have mainly touched upon teaching English language in all levels and stages of education. At this point CEFR plays as the main framework to be adopted in developing the national standard. In this article, we shall discuss reforms of adoption and implementation of the new standard which was a requirement of time and has started a new era in the whole system of foreign languages learning in Uzbekistan.

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