Crack analysis related to the stability of gravity and concrete dams using CADAM software (Case study: Dez regulatory dam)
الموضوعات :
1 -
2 -
الکلمات المفتاحية: Stability Analysis, سد تنظیمی دز, تحلیل پایداری, CADAM software, Concrete weight dams, Dose control dam, نرمافزار CADAM, سدهای وزنیبتنی,
ملخص المقالة :
The present study investigates the stress and crack analysis in weighted concrete dams under constant acceleration resulting from earthquakes in the horizontal direction and induced earthquakes generated by the dam reservoir. This analysis was performed using CADAM software. The main purpose of stress calculations is to determine the amount of tensile length of the gap that is created by the inertial forces in the dam and the effect of these stresses on the stability of the concrete dam. CADAM software was developed in 2003 at the University of Montreal to analyze concrete dams in a variety of situations. In this paper, the gap and its effect on the stability of the concrete weight barrier with a maximum earthquake of 0.28 g were analyzed and the results were analyzed separately in each executive joint. In all joints, the minimum coefficient of safety against stability (at least 1.3) was obtained. Looking at the tables of results, it can be concluded that the stability of the regulating dam is suitable for acceleration of horizontal earthquake equal to 0.28 g. They are acceptable in earthquake and normal conditions.
ابریشمی، ج. و وهاب رجایی، ن. (1384). سدهای بتنی طرح و اجرا، انتشارات آستان قدس رضوی.
بیرامی، م. ک. (1387). سازههای انتقال آب، دانشگاه صنعتی اصفهان، چاپ هفتم، زمستان1387.
حیرانی، ز. (1384). بررسی مسائل لرزهای سدهای وزنیبتنی و خاکی بر اساس مشاهدات. اولین همایش بینالمللی زلزله و سبکسازی ساختمان، دوم و سوم مهرماه1384.
کمان بدست، ا. ع. و آقامجیدی، ر. (1390). تحلیل پایداری سدخاکی مارون توسط نرم افزار ANSYS. اولین کنفرانس ملی سد و نیروگاه های برق آبی تهران، 19 بهمن 1390، تهران، ایران.
کمیته ملی سدهای بزرگ ایران. (1377). مهندسی پیشرفته در طراحی، ساخت و بازسازی سدها، جلد دوم.
نورزاد، ع و نیکخواه، م. (1382). بررسی و آنالیز دینامیکی سدهای طراحی شده با روشهای سنتی (مطالعه موردی سد Koyna).23 و 24 اردیبهشت ماه، تهران.
Ambraseys, N. N. and Meville, C. P. (1982). A History of persian earthquakes,cambridge press, London.
CADAM. (2001). User's Manual, Version 1.4.3, April 2001.
Cornell, C. A. (1968). Engineering seismic risk analysis. Bull Seis Soc Am, 58(5), pp: 1586-1606.
FERC, (Federal Energy Regulatory Commission). (1991). Engineering Guidelines for Evaluation of Hydropower Projects, Chapter III, Gravity Dams. Federal Energy Regulatory Commission, Office of Hydropower Licensing, Report No. FERC 0119-2, Washington D, USA.
Ghanaat, Y. and Anjana, K. (2012). Chodgar Sesmic Design and Evaluation of Concrete Dams, An Engrineering Manual.
Johangara, F. and Lotfi, V. (1991). Dynamic analysis of concrete gravity dams by combination of boundary elements method and finite element method. First International conference on seismology and earthquake engineering Tehran.
Kaila, K. L. and Narian, H. (1971). A New Approach for the preparation of quantitative seismicity maps. Bull Seic Soc Amer, 61(1), p: 275-91.
Khoshnudian, F. And Lotfi, V. (1991). Dynamic analysis of concrete gravity dams by combination of boundary elements method and finite element method. First international conference on seismology and earthquake engineering .Tehran .p.261-268
Lo, K. Y., Ogawa, T., Lukajic, B., Tsui, K. K. and Wang, S. (1990). Evaluation of Strength Parameters of Concrete-rock Interface for Dam Safety Assessment, Canadian Dam Safety Conference, Toronto, pp. 71-94.
Sila Tripati, B., Ramalingeswara, S., Shashikala, R., Vijendra, R. and Vijay, Kh. (2009). Analysis of timber and coating material on an iron anchor recovered off Aguada Bay, Goa. Current Science, 97( 9), pp. 1361-1368.
Tao, W., Xianqian, Z. and Jianmin, Z. (2008). Research on choice of dam foundation elevation in hydropower engineering.
USBR, (United States Bureau of Reclamation). (1987). Design of Small Dams. Denver, Colorado.
Zienkiewicz, O. C. (1963). Stress analysis of Hydraulic Structures, including Pore Pressures Effects. Water Power, March, pp. 104-108.