อิทธิพลของปฏิสัมพันธ์ระหว่างโครงสร้างกับฐานรากชิดเขตต่อผลตอบสนองของโครงสร้าง ภายใต้แรงแผ่นดินไหว

Abstract

This research study investigates the case of reinforced concrete buildings with 3, 5, and 7 story that are located on a strap footing foundation on three types of soil: sand, soft clay and hard clay. The buildings are designed to withstand seismic forces according to the standards set by the Department of Highways and City Planning, Ministry of Transport and Communications, Thailand, in the year 1302-62, which include the design for earthquake-resistant structures. The study compares with fixed-base foundation and design with the case of a 3-story reinforced concrete building that is located on a strap footing foundation without being designed to resist seismic forces. The comparison with a fixed-base foundation. The aim is to analyze the influence of soil-foundation interaction and evaluate the damage to the structures according to the standards of the Federal Emergency Management Agency (FEMA356), considering the plastic rotations that occurs in the structural elements when subjected to seismic forces. The study concludes that the analysis and design of earthquake-resistant structures should take into account the interaction between the soil and the foundation in order to align the analysis with the most realistic conditions.