كاربرد روش مهندسي ارزش در طراحی سد و تونل انتقال آب گاوشان

منبع : گروه نرم افزاری سی سی

كاربرد روش  مهندسي  ارزش در طراحی سد  و تونل انتقال آب  گاوشان

امير فرجي آزاد

چكيده

طرح هاي استحصال وانتقال آب نياز به دادهاي اطلاعاتي متعددي دارند كه اساس طراحي هابرمبناي اين اطلاعات برنامه ريزي مي شود. لذا در طراحي ها هميشه ناشناخته هاي متعددي وجود خواهد داشت كه در حين اجرا اين ناشناخته ها نمايان مي گردند با ظاهر و آشكار شدن اطلاعاتي كه در زمان طراحي ها مخفي بوده اند . روش مهندسي ارزش رشد و نمو پيدا مي كند دراين رابطه طرح ملي گاوشان تجربه مفيدي در نياز به كاربرد مهندسي ارزش رانشان داده است . بكارگيري روش مهندسي ارزش دراجزاي مختلف طرح ملي گاوشان شامل : تغيير طرح فرازبند ، بازنگري سيلاب ها و تدقيق طرح سرريز ، بازنگري و تدقيق طرح پوشش جداره داخلي تونل انتقال باعث گرديد تا حدود ٣٨٤٠٠ ميليون ريال در طرح صرقه جويي گردد.

ساختار فايل: PDF/Adobe Acrobat

http://www.ccsofts.com/Articles/IRCOLD/67.pdf

---

---

منبع : سيويل استارز

پاسخ لرزه ای سد های بتنی وزنی
Earthquake response of concrete gravity dams

توضیحات:

arthquake response of concrete gravity dams including hydrodynamic and foundation interaction effects
Chopra, Anil K.; Chakrabarti, Parthasarathi; Gupta, Sunil

UCB/EERC-80/01, Earthquake Engineering Research Center, University of California, Berkeley, 1980-01, 210 pages (540/C49/1980)

A general procedure is presented for the analysis of the response of concrete gravity dams, including the dynamic effects of impounded water and flexible foundation rock, to the transverse (horizontal) and vertical components of earthquake ground motion. The problem is reduced to one in two dimensions, considering the transverse vibration of a monolith of the dam. The system is analyzed under the assumption of linear behavior for the concrete, foundation rock, and water. The complete system is considered to comprise three substructures--the dam, represented as a finite element system; the fluid domain, as a continuum of infinite length in the upstream direction; and the foundation rock region, as a viscoelastic halfplane. The structural displacements of the dam are expressed as a linear combination of Ritz vectors, chosen as normal modes of an associated undamped dam-foundation system. The modal displacements due to earthquake motion are computed by synthesizing their complex frequency responses using fast Fourier transform procedures. The stress responses are calculated from the modal displacements. The response of idealized dam cross sections to harmonic horizontal or vertical ground motion is presented for a range of important system parameters characterizing the properties of the dam, foundation rock, and impounded water. Based on these results, the authors investigate and present conclusions concerning the separate effects of fluid-structure and foundation-structure interaction, and the combined effects of the two sources of interaction on the dynamic response of dams.

لینک دانلود مستقیم:

http://ifile.it/nj7cw3p/EERC-80-01.pdf

یا

http://www.4shared.com/file/257687637/bd...80-01.html

یا

http://www.mediafire.com/file/modzjmmt32...-80-01.pdf