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A platform for research: civil engineering, architecture and urbanism
Seismic Analysis of Geogrid-Reinforced Soil Retaining Walls Under Decomposed Earthquake Records
https://orcid.org/http://orcid.org/0000-0001-9921-3185
This study investigates the seismic behavior of geogrid-reinforced soil (GRS) retaining walls. The seismic analysis of GRS retaining walls was carried out under main and wavelet-based decomposed earthquake records using numerical finite difference method. The numerical modeling was verified through physical shaking table tests results. The earthquake records were decomposed using down-sampling method (DSM) and de-noising method (DNM) up to five levels. The wall lateral displacement and reinforcement tensile force under the main and decomposed earthquake records were evaluated and compared. It was found that the lateral displacement and maximum reinforcement tensile force under DSM-based decomposed records at levels 1, 2, and 3 had high consistency with those under the main records. The lateral displacement and maximum reinforcement tensile force under DSM-based decomposed earthquake records at levels 1 and 2 were in good agreement with those under the main earthquake records. Therefore, main earthquakes can be replaced with wavelet-based decomposed seismic records in the dynamic analysis of GRS retaining walls. It was also found that the DNM-based decomposed seismic records had higher accuracy than the DSM-based decomposed ones. Therefore, DNM-based decomposed earthquake records could be a more effective alternative to main earthquake records in the dynamic analysis of GRS walls.
Seismic Analysis of Geogrid-Reinforced Soil Retaining Walls Under Decomposed Earthquake Records
https://orcid.org/http://orcid.org/0000-0001-9921-3185
This study investigates the seismic behavior of geogrid-reinforced soil (GRS) retaining walls. The seismic analysis of GRS retaining walls was carried out under main and wavelet-based decomposed earthquake records using numerical finite difference method. The numerical modeling was verified through physical shaking table tests results. The earthquake records were decomposed using down-sampling method (DSM) and de-noising method (DNM) up to five levels. The wall lateral displacement and reinforcement tensile force under the main and decomposed earthquake records were evaluated and compared. It was found that the lateral displacement and maximum reinforcement tensile force under DSM-based decomposed records at levels 1, 2, and 3 had high consistency with those under the main records. The lateral displacement and maximum reinforcement tensile force under DSM-based decomposed earthquake records at levels 1 and 2 were in good agreement with those under the main earthquake records. Therefore, main earthquakes can be replaced with wavelet-based decomposed seismic records in the dynamic analysis of GRS retaining walls. It was also found that the DNM-based decomposed seismic records had higher accuracy than the DSM-based decomposed ones. Therefore, DNM-based decomposed earthquake records could be a more effective alternative to main earthquake records in the dynamic analysis of GRS walls.
Seismic Analysis of Geogrid-Reinforced Soil Retaining Walls Under Decomposed Earthquake Records
https://orcid.org/http://orcid.org/0000-0001-9921-3185
This study investigates the seismic behavior of geogrid-reinforced soil (GRS) retaining walls. The seismic analysis of GRS retaining walls was carried out under main and wavelet-based decomposed earthquake records using numerical finite difference method. The numerical modeling was verified through physical shaking table tests results. The earthquake records were decomposed using down-sampling method (DSM) and de-noising method (DNM) up to five levels. The wall lateral displacement and reinforcement tensile force under the main and decomposed earthquake records were evaluated and compared. It was found that the lateral displacement and maximum reinforcement tensile force under DSM-based decomposed records at levels 1, 2, and 3 had high consistency with those under the main records. The lateral displacement and maximum reinforcement tensile force under DSM-based decomposed earthquake records at levels 1 and 2 were in good agreement with those under the main earthquake records. Therefore, main earthquakes can be replaced with wavelet-based decomposed seismic records in the dynamic analysis of GRS retaining walls. It was also found that the DNM-based decomposed seismic records had higher accuracy than the DSM-based decomposed ones. Therefore, DNM-based decomposed earthquake records could be a more effective alternative to main earthquake records in the dynamic analysis of GRS walls.
Seismic Analysis of Geogrid-Reinforced Soil Retaining Walls Under Decomposed Earthquake Records
Iran J Sci Technol Trans Civ Eng
Javdanian, Hamed (author) / Goudarzi, Neda (author)
2023-08-01
13 pages
Article (Journal)
Electronic Resource
English
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