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  1. 1. DESIGN AND ANALYSIS OF A CONCRETE GRAVITY DAM UNDER THE GUIDANCE OF- DR. P. M. PAWARProject Presented by: 1) RISSO JOHNNY 2)KAPU TAKAR 3)ATAN KETAN 4)THORAT MANOJ 5)SHAIKH ARSHANAJ
  2. 2. PROJECT OVERVIEW DESIGN bY CONVENTIONAL METHOD . SIMULATION bY ANSYS . STATIC & STRESS ANALYSIS bY STAAD PRO . OPTIMIzATION bY GENETIC ALGORITHM.
  3. 3. DAM DAM IS A SOLID bARRIER CONSTRUCTED AT A SUITAbLE LOCATION ACROSS A RIVER VALLEY TO STORE FLOWING WATER .TYPES OF DAMS :EARTH DAM GRAVITY DAM ARCH DAM bUTTRESS DAM
  4. 4. SITE SELECTION Narrow gorgeCRITERIA enough or small valley with catchment area. Length of dam to constructed is less. Water-tightness of reservoir. Good hydrological conditions Deep reservoir Small submerged area Low silt inflow No objectionable minerals Low cost of real estate Site easily accessible
  5. 5. SITE INVESTIGATION Engineering Survey Geological Investigation Hydrological Investigation
  6. 6. LOCATION OF THE PROPOSED GRAVITY DAM
  7. 7. DIGITALPLANIMETER
  8. 8. SALIENT FEATURES Catchment Area = 125000 sq.km Runoff = 142.3505 mm Yield = 1.775×1010 m3 Rate of silting = 100m3 / Km2/year Dead Storage = 1250 Mm3 Live Storage = 250 Mm3 Gross Storage = 1500 Mm3
  9. 9. STAbILITY CHECK Self weight of the dam = 84883.722 KN Uplift pressure = 31632.83 KN Hydrostatic pressure = 33790.55 KN Resisting Moment = 4313343.6 KNm Overturning Moment = 2573564.51 KNm F.O.S against overturning = 1.678 > 1.5 F.O.S against sliding = 1.17 > 1 Shear Friction Factor = 4.1725 > 4
  10. 10. STRESS CALCULATION A) RESEREVIOR FULL CONDITION NORMAL STRESSES : Toe = 1014.739 KN/m2 Heel = 357.15 KN/m2 PRINCIPAL STRESSES : Toe = 1774.00 KN/m2 Heel = 357.149 KN/m2 SHEAR STRESSES : Toe = 877.75 KN/m2 Heel = 45.70 KN/m2
  11. 11. STRESS b) CALCULATION RESERVOIR EMPTY CONDITION NORMAL STRESSES : Toe = 157.05 KN/m2 Heel =1950.49 KN/m2 PRINCIPAL STRESSES : Toe = 274.56 KN/m2 Heel =1970.49 KN/m2 SHEAR STRESSES : Toe = 135.85 KN/m2 Heel = 195.02 KN/m2
  12. 12. Overview Of ANSYS ANSYS, Inc. is an engineering simulation software with its headquartered south of Pittsburgh in canonsburg Pennsylvania, united states. It is mainly associated with simulation of various mechanical components, dams, water tanks, etc. Simulation is the process of studying the behavior of a structure or a component before actually making it.
  13. 13. USe Of ANSYS iN OUr prOject SimUlAte the prOpOSed dAm SectiON with hYdrOStAtic lOAd, Uplift preSSUre ANd Self weight. check the priNcipAl, NOrmAl, mAximUm ANd SheAr StreSSeS At the tOe ANd the heel.
  14. 14. 1) NOrmAl StreSSeS 1) ANSYS cAlcUlAtiONS:A) At heel: 3.412e5 Pa b) At tOe: 1.0388e6 Pa 2) mANUAl cAlcUlAtiONS:A) At heel: 3.5715 e5 Pa b) At tOe: 1.014e6 Pa
  15. 15. 2) SheAr StreSS 1) ANSYS cAlcUlAtiONS:A) At heel: 4.176e4 Pa b) At tOe: 7.4235e5 Pa 2) mANUAl cAlcUlAtiONS:A) At heel: 4.570 e4 Pa b) At tOe: 8.7775e5 Pa
  16. 16. 3) priNcipAl StreSSeS 1) ANSYS cAlcUlAtiONS:A) At heel: 3.4289e5 Pa b) At tOe: 1.17e6 Pa 2) mANUAl cAlcUlAtiONS:A) At heel: 3.57e5 Pa b) At tOe: 1.774e6 Pa
  17. 17. Static & hydroStatic analySiS by uSing Staad Pro.V8i
  18. 18. About the STAAD Pro.V8i STAAD Pro.V8i is a modern sophisticated civil engineering software for the analysis and design of civil structures like low and high-rise buildings, dams, culverts, petrochemical plants, tunnels, bridges, piles, aquatic structures and much more!
  19. 19. uSe in our Project Static Analysis and Hydrostatic Analysis for DAM Section.
  20. 20. Static analySiS of Structure GEOMETRY OF DAM Dam Geometry
  21. 21. 3d View of dam
  22. 22. dead & liVe load combination
  23. 23. fixed end momentS
  24. 24. diSPlacement of the Structure
  25. 25. hydroStatic PreSSure analySiS Hydrostatic Pressure Loadings
  26. 26. StreSS onStructure
  27. 27. oPtimization of the dam Section- by genetic algorithm
  28. 28. dam Section
  29. 29. Problem Formulation Formulation of the problem in Mat lab. Constraint function i.e. Area computations. Unconstraint function i.e. Eccentricity computations.
  30. 30. Variables in constraint Functiona= 12%-16% of hx= 40-50% of ay= 10-15% of a
  31. 31. Matlab code
  32. 32. mat lab result
  33. 33. results aFter oPtimization Optimized section was obtained for Optimized section was obtained for a=12m x=40% of a y= 15% of a Dam cross sectional area was reduced to 3218.5715 square meter from 4405 square meter. Base width was reduced by 1.7m from 79.40m to 77.70 m.
  34. 34. oPtimizeD section
  35. 35. conclusion DraWnSafe and optimal damsection is obtained, which isthe most economical and thesafest in which no tension isdeveloped anywhere in thedam section.
  36. 36. tHanK You

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