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| Study on calculation model for temperature field of roller compacted concrete lifts |
| Revised:November 21, 2003 |
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| DOI：10.7511/jslx20056127 |
| KeyWord:RCC,rolling layers,temperature field,initial temperature,adiabatic temperature rise |
| LIU Hai-cheng~ |
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| Abstract: |
| How to determine initial temperature and adiabatic temperature rise is one of the most principal factors for RCC(Roller Compacted Concrete) dam,which will influence the accuracy and quantity of simulation analysis for temperature field.In this paper,the analytic solutions for one-dimensional temperature field of multi-layer thin plate structure are proposed by Laplace transform and superposition principle,where the differences of pouring time and heat of hydration emitting time between rolling layers are considered.Based on the above analytic solutions,the equivalent model for temperature field is established by merging multiple rolling layers into one composite layer,and the approximate formulas for equivalent initial temperature and equivalent adiabatic temperature rise are put forward.By this method,construction processes of RCC dam may be simulated,and analysis on temperature field for RCC dam can be simplified.By the comparison,the better agreement is observed between the calculated values using the equivalent initial temperature and adiabatic temperature rise from composite layer and the analytical results of multiple rolling layers. |
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