Site coefficients suitable to China site category

• 作 者: 吕红山 赵凤新
• 机 构: Institute of Geophysics China Earthquake Administration Beijing 100081 China,Institute of Geophysic
• 出 处: Acta Seismologica Sinica(English Edition)
• 发表日期: 2007年01期
• 关键词: category rock acceleration Figure records logging have SMART listed record

The basis for the NEHRP site coefficients is summarized in the paper. The comparison of site classification be- tween China and US code provisions has been carried out. The relationship between two site classifications has been found by the analysis of wave velocity of site soil. Thus amplitude-dependent site amplification factors for China site classification has been gained by transformation from US amplification factors. Two amplification fac- tors are specified: Fa for short periods and Fv for longer periods. On the contrast, there is only one long period factor and not a short period factor in the current China code provision.

The basis for the NEHRP site coefficients is summarized in the paper. The comparison of site classification be- tween China and US code provisions has been carried out. The relationship between two site classifications has been found by the analysis of wave velocity of site soil. Two amplification fac- tors are specified: Fa for short periods and Fv for longer periods. On the contrast, there is only one long period factor and not a short period factor in the current China code provision.