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
PROJECT OVERVIEW DESIGN bY CONVENTIONAL METHOD . SIMULATION bY ANSYS . STATIC & STRESS ANALYSIS bY STAAD PRO . OPTIMIzATION bY GENETIC ALGORITHM.
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
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
SITE INVESTIGATION Engineering Survey Geological Investigation Hydrological Investigation
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
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
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
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
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.
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.
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
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
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
Static & hydroStatic analySiS by uSing Staad Pro.V8i
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!
uSe in our Project Static Analysis and Hydrostatic Analysis for DAM Section.
Static analySiS of Structure GEOMETRY OF DAM Dam Geometry
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.