Computational of Temperature and Stresses for Mujib Dam

Analysis Modeling Approach

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Journal HP 2004 Malakwi

Analysis Modeling Approach

The numeric analysis of the 46 meter high structure of the dam body was

based on the two modeling approaches:

 The first approach (conventional approach), the analysis was carried out

considering a continuous placement of RCC with an interval of 3meter in 10 days,

and a constant value for ambient and placement temperature was taken, where the

ambient temperature was equal to the average annual temperature cycle and

placement temperature was equal to the average placement temperature. The average

annual and placement temperature is about 20˚C and 21˚C respectively.

 The second approach (actual approach), is based on the actual information

obtained during the construction of the dam, that includes: the data of installation of

the RCC (actual schedule placement); the daily ambient temperature; the temperature

of the RCC in unsettled initial stage; the adiabatic temperature increment curve of

temperature and heat of hydration curve; actual thermal conductivity; specific heat

and density of the conventional concrete (CVC), and RCC.

For each approach, two and three dimension thermal and structural analyses

are carried out for the Mujib RCC dam. Linear and nonlinear stress strain behavior

regarding its temporal variability are considered in the structural analysis. The

numerically computed temperatures are compared with the actual temperature of the

RCC dam which is instrumented with DFOT and thermocouples. (no results for 2D-

actual-nonlinear-Modulus and 3D-actual-nonlinear-Modulus are presented here)

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