Based on the mechanical behavior of reinforced timber-concrete composite (TCC) beams,the calculation model of the ultimate flexural capacity for reinforced TCC beams was established. Furthermore,the formula of flexural capacity was presented. In order to verify the correctness of the formula,four TCC beams with different reinforced degree were designed and built. Through the loading test,the results show that the formula is in good agreement with the test results,and can be applied to the calculation of ultimate flexural capacity of reinforced TCC beams. At the same time,combined with the calc...