The Effect of the Thichness and Slope of the Construction Soft Plinth on the Interaction of Soil, Structure and Pile

نوع: Type: thesis

مقطع: Segment: masters

عنوان: Title: The Effect of the Thichness and Slope of the Construction Soft Plinth on the Interaction of Soil, Structure and Pile

ارائه دهنده: Provider: Amin Nemati Eznavle

اساتید راهنما: Supervisors: Dr. Meysam Zarin Far

اساتید مشاور: Advisory Professors:

اساتید ممتحن یا داور: Examining professors or referees: Dr.Mohammad Maleki, Dr Abas Ghadimi

زمان و تاریخ ارائه: Time and date of presentation: 16/10/2023

مکان ارائه: Place of presentation: Faculty of Engineering seminar

چکیده: Abstract: In the last few decades, Iran and other earthquake-prone countries in the world have been faced with damages from liquefaction caused by earthquakes and related geotechnical issues. These ruptures have caused severe and costly damage to port buildings, bridges, dams, buried pipes and various types of structures. Liquefaction of soils saturated with water is caused by the tendency of solid grains to condense due to the application of shear stresses. At first, the structure with the number of 5, 15, 25 floors is modeled using SAP software. Then, assuming a rigid foundation, it is modeled in ABAQUS software, considering the construction soil without slope and with slopes of 15, 30, 45, 60 degrees. Based on the available results, we can observe the effect of the number of floors, the presence or absence of piles, the slope of the soft soil of the building, and earthquakes in the far and near areas on the behavior of the structure. In this research, the pile foundation with and without piles was examined under two records of far and near earthquakes, which according to the results of near earthquakes has caused more destructive effects on the structure, in such a way that the near earthquakes It has caused a further increase in foundation shear and structural displacement. According to the obtained results, displacement value of 5-story model with construction soil, without piles under earthquake Far basin with a slope of 30 degrees has increased by 11.76% compared to the zero degree model. Also, the displacement value of the 5-story model with The soil of the construction without piles under the far basin earthquake with a slope of 45 degrees has increased by 25% compared to the zero degree model. the amount of The displacement of the 5-story model with construction soil with piles under the far basin earthquake with a slope of 60 degrees, 46.15% compared to the zero degree model Increased. Shear value of the foundation of the 5-story model with construction soil with piles under the far basin earthquake with a slope of 30 degrees, 13.34% Compared to the zero degree model, it has increased. The shear value of the base of the 5-story model with construction soil without piles under the Far Basin earthquake The slope of 60 degrees has increased by 58.06% compared to the zero degree model. The results of the analysis and investigations show that the displacement and foundation shear created in the structure has improved when the construction soil is reinforced with piles. With the increase in the number of floors and also with the increase in the slope of the construction site, the displacement and cutting of the foundation of the structure has increased