›› 2012, Vol. 33 ›› Issue (7): 1972-1978.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A constitutive model for rockfill materials incorporating grain crushing under cyclic loading

LIU En-long1, CHEN Sheng-shui2, LI Guo-ying2, MI Zhan-kuan2, HAN Hua-qiang2   

  1. 1. School of Water Resources & Hydropower, Sichuan University, Chengdu 610065, China; 2. Nanjing Hydraulic Research Institute, Nanjing 210029, China
  • Received:2011-08-12 Online:2012-07-11 Published:2012-07-13

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Abstract: There are many 200-300 m high rockfill dams constructed in high earthquake areas located in western areas of China. The grain crushing of rockfill materials with high stress level has significant influence on the stress-strain properties under cyclic loading. Based on the theory of generalized plasticity, and by introducing state parameters, a new dynamic constitutive model for rockfill materials is formulated; and the determination of model parameters is provided as well. Finally the constitutive model is used to model the test results of rockfill materials at 400, 800, 1 500, 2 200 kPa consolidated pressures respectively, which verifies that the proposed constitutive model can simulate well the dynamic stress and dynamic strain responses of rockfill materials under cyclic loading considering grain crushing.

Key words: rockfill materials, grain crushing, dynamic constitutive model, cyclic loading

CLC Number: 

  • TV 641.4
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