TY - JOUR ID - 4681 TI - Investigating the soil consolidation via vacuum method by using numerical analysis JO - Amirkabir Journal of Civil Engineering JA - CEEJ LA - en SN - 2588-297X AU - Karimi, Mohammad AU - Yazdi, Maryam AU - Zad, Amir Ali AD - Department of Civil Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran AD - Department of civil engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran AD - Department of Civil Engineering, Engineering Faculty, Islamic Azad University, Central Tehran Branch Y1 - 2022 PY - 2022 VL - 54 IS - 7 SP - 2739 EP - 2758 KW - Soil consolidation KW - COMSOL Software KW - Vacuum pressure KW - Number of Vacuum terminals KW - Numerical modeling DO - 10.22060/ceej.2022.18264.6812 N2 - Due to increasing population and urbanization and lack of suitable land in terms of bearing capacity, construction is performed on soft soils, especially clays with low bearing capacity and excessive conventional settling characteristics. In these types of saturated soils, the construction of structures, such as large buildings, will release pore water pressure and therefore create a consolidation. One of the ways to reduce consolidation to the permissible amount specified in the regulations is to use a preload method that will require soil and embarkment operations and ultimately, necessity the removal of those embarkments. Vacuum combined with vertical drainage is an effective way to reduce the number of soil operations and associated costs, which in other words will accelerate the construction of structures and reduce costs. In this study, the effect of several parameters on the amount of consolidation was investigated by simulating soil consolidation via using the COMSOL Multiphysics and GeoStudio software. Based on the results, it was found that increasing vacuum intensity in vacuum chambers, increasing soil void ratio, and increasing bedrock depth, each of them accelerated the consolidation process. However, the number of vacuum terminals does not have a significant impact on this process. UR - https://ceej.aut.ac.ir/article_4681.html L1 - https://ceej.aut.ac.ir/article_4681_73ced32f25c908e7d0d6ada0e6d3d283.pdf ER -