Construction Ⅲ / Pavement & Dam / Mass concrete

[1228] NUMERICAL SIMULATION OF CONSTRUCTION-JOINT EFFECTS FOR FATIGUE-LIFE ASSESSMENT OF CONCRETE PAVEMENT SUBJECTED TO TRAVELING WHEEL-TYPE LOAD

Hung NGUYEN¹, Koichi MAEKAWA², Satoshi KOMATSU² (1.Yokohama National University, 2.横浜国立大学)

Keywords:concrete pavement、fatigue life、joints、moving load、numerical simulation、コンクリート舗装、数値シミュレーション、疲労寿命、移動荷重、継目

The coupled code program for analysis of soil and concrete slab to be verified by the small-scale experiment has been implemented by integrating constitutive models for concrete and soil under the moving load to assess the life-cycle of jointed and continuously reinforced concrete. The behavioral simulation is discussed to emphasize the drastic reduction of fatigue life of jointed concrete due to the localized damage of concrete slab and soil. The effects of reinforcement ratios, thickness of concrete slab and relative density of soil have been investigated as the sensitivity factors of modeling.