地震作用下土坝抗裂稳定性的判别

调查表明,土石坝常见的震害形式是平行坝轴线的裂缝。文中通过一系列模型坝的实验,研究了裂缝形成的条件。利用迈勒累积损伤模型和随机振动理论提出了估价土坝在地震作用下抗裂性能的计算公式,并据此研究了一座实际土坝出现地震裂缝的可能性。

Prediction of Cracking Resistant Behavior of Earth Dams during Earthguake

A review of earth dams performance during earthguake shows that the damage of dams has Predominately been occurred in the form of vertical cracks parallel to the dam axis. A series of model tests have been carried out for studying the conditions favouring the development of such cracks. Then, based on Miner's cumulative damage theory and random vibration theory a method is presented for the Prediction of cracking resistant behavior of earth dams subjected to earthquake, Finally, the cracking potential of an actual dam has been examined.