| dc.description.abstract | In this case, there is a deep (80 m) soft soil layer located at the Semarang-
Demak toll road site. Soft soil has the potential to amplify low-frequency
seismic waves that can trigger resonance and high-amplitude seismic load
excitation. This would threaten the secure of the infrastructure above it.
Therefore, in the seismic design of the infrastructure on the site, site-
specific analysis needs to be conducted. This study discusses the SSSA
analysis of the Semarang-Demak toll road site using 1D dynamic analysis
methods, both linearly and nonlinearly, with DEEPSOIL software. The
soil dynamic analysis is conducted with some input data, i.e., earthquake
data, soil dynamic parameters, and soil stratigraphy profiles that are
matched with the response spectra design (SNI 2833:2016 code) of the
site. The results show that both equivalent linear and nonlinear site
response analyses generate significantly higher responses than response
spectra designed below the soil natural period. However, in the higher
natural period, both soil analysis results show higher response
amplification at a particular frequency; nonlinear analysis exhibits lower
responses than linear equivalent analysis. Thus, the nonlinear analysis
more accurately represented the real condition of the site in calculating
seismic response analysis than the than the equivalent linear method,
resulting in more coincidence with the response spectra design. | en_US |
