土石壩的評估和修復畢業(yè)設(shè)計外文翻譯-其他專業(yè)-文庫吧資料
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【正文】 trength and minimum zone of soil strengthening required for a postearthquake stability factor of safety, (FS), SPT corrections were made. The minimum residual shear strength correlates to a corrected/normalized peration resistance value (N1) of 60. From this value, a backcalculation was performed to determine the minimum field measure standard peration resistance N values (blows per foot). Third, liquefaction potential was reevaluated based on the minimum zone of strengthening and minimum strength in order to show that if the embankment is strengthened to the minimum value, then the liquefaction potential in the downstream slope of the left embankment will, for all practical purposes, be eliminated. Conclusion Key factors to be considered in dam assessment and rehabilitation are the pleteness of design, construction, maintenance and monitoring records, and the experience, background, and petence of the assessing engineer. The paper presents a recently pleted project to show that the economic realization of this type of rehabilitation inevitably rests to a significant degree upon the expertise of the civil engineers. References Duncan, J. M., Seed, R. B., Wong, K. S., and Ozawa, U. (1984). ??FEADAM: A puter program for finite element analysis of dams.‘‘ Geotechnical Engineering Research Rep. No. SU/GT/8403,Dept. of Civil Engineering, Stanford Univ., Stanford, Calif. FERC. (1993). ??Engineering guidelines for the evaluation of hydropower projects.‘‘ 01192. Makdisi, F. I., and Seed, H. B. (1977). ??A simplified procedure forestimating earthquake induced deformations in dams and embankments.‘‘ Rep. No. EERC 7719, Univ. of California, Berkeley, Calif. Purdue Univ. (1988). ??PCSTABL: A puter program for slope stability analysis.‘‘ Rep., West Lafayette, Ind. Schnabel, P. B., Lysmer, J, and Seed, H. B. (1972). ??SHAKE: A puter program for earthquake response analysis of horizontally layered site.‘‘ Rep. No. EERC 7212, Univ. of California, Berkeley, Calif. Seed and Harder. (1990). ??An SPTbased analysis of cyclic pore pressure generation and undrained residual strength.‘‘ Proc., H. Bolton Seed Memorial Symp., 2, 351–376. Tokimatsu, K., and Seed, H. B. (1987). ??Evaluation of settlements of sands due to earthquake shaking.‘‘ J. Geotech. Eng., 113(8), 861–878. 中文翻譯 土石壩的評估和修復 摘要： 在野外實地、辦公室里 已進行的一系列的觀察，研究，分析，使本文獲得了對石壩如何適應其地質(zhì)環(huán)境，以及如何與水庫相互影響的正確的認識。 (2) estimation of strength for the loose foundation layer during and immediately following the earthquake。 and (3) freeboard. For an embankment dam, all of these factors are interrelated. Seepage may cause erosion and piping, which may lead to instability. Instability may cause cracking, which, in turn, may cause piping and erosion failures. The measures taken to improve the stability of an existing dam against seepage and piping will depend on the location of the seepage (foundation or
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