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Volume 34 Issue 3
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TAO Xia-xin, CHEN Fu, SUN Xiao-dan. Improvement of source spectrum model for synthesis of strong ground motion[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(3): 504-507.
Citation: TAO Xia-xin, CHEN Fu, SUN Xiao-dan. Improvement of source spectrum model for synthesis of strong ground motion[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(3): 504-507.
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Improvement of source spectrum model for synthesis of strong ground motion

  • 1. School of Civil Engineering, Harbin Institute of Technology, Harbin150090, China; 2. Institute of Engineering Mechanics, CEA, Harbin150080, China; 3. School of Civil Engineering, South-Western Jiaotong University, Chengdu 610031, China

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  • Received Date: July 30, 2011
  • Published Date: March 29, 2012
    Graphical Abstract
    • Abstract
  • A source spectrum model for stochastic synthesis of strong ground motion is introduced in order to eliminate the dependence of the motion on the size of sub-source. In the model, the domination of asperity on high-frequency motion is emphasized. The corner frequency is related with the slip of sub-source and decreases with the rupturing, i.e., number of ruptured sun-sources. Furthermore, an approach is presented to add a scaling factor into the source spectrum model to counterbalance the energy loss from the change of source spectrum parameters with the spreading of rupture area. By means of this approach, an obvious decrease of variation of the total radiated energy at far field is demonstrated by a case study .
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    • References (12)
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