Scholarlink

<p>Soil–structure interaction (SSI) analysis evaluates the collective response of the structure, the deep foundation, and the soil underlying the foundation. Thus, it can alter the tall buildings behavior during earthquakes. This paper evaluated the seismic performance of tall buildings by estimating lateral displacements and inter-story drifts as engineering demand parameters (EDPs), as well as the peak story horizontal accelerations using SSI analysis. For this purpose, a 33-story RC frame-core structure was modeled in the MIDAS GTX NX platform with its pile-raft foundation. Then, several nonlinear dynamic analyses were conducted to capture the structure’s nonlinear response. Although the SSI model’s lateral displacement of the structure was smaller than that of the fixed-base model, the maximum inter-story drifts and peak story horizontal accelerations for the SSI model increased, particularly under 475-year earthquake records. These can significantly affect the seismic performance of the structure. Therefore, the key factors affecting the stability of tall structures with deep pile foundations in sandy soil include the properties of the soil, notable excitations, vibrational characteristics, size of soil particles, density, clay content, and groundwater level. This study’s results indicate that soil-structure interaction (SSI) must be considered in evaluating the seismic performance of high-rise buildings.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Seismic Assessment of RC Tall Core-Frame Buildings Considering Soil Structure Interaction (SSI)

  • 期刊论文

  • 发表日期：

    2025年4月22日

查看全文
  • Nima Dorrinia,
  • Hossein Pahlavan,
  • Mohammad Shamekhi Amiri,
  • Mojtaba Sirjani

摘要

Soil–structure interaction (SSI) analysis evaluates the collective response of the structure, the deep foundation, and the soil underlying the foundation. Thus, it can alter the tall buildings behavior during earthquakes. This paper evaluated the seismic performance of tall buildings by estimating lateral displacements and inter-story drifts as engineering demand parameters (EDPs), as well as the peak story horizontal accelerations using SSI analysis. For this purpose, a 33-story RC frame-core structure was modeled in the MIDAS GTX NX platform with its pile-raft foundation. Then, several nonlinear dynamic analyses were conducted to capture the structure’s nonlinear response. Although the SSI model’s lateral displacement of the structure was smaller than that of the fixed-base model, the maximum inter-story drifts and peak story horizontal accelerations for the SSI model increased, particularly under 475-year earthquake records. These can significantly affect the seismic performance of the structure. Therefore, the key factors affecting the stability of tall structures with deep pile foundations in sandy soil include the properties of the soil, notable excitations, vibrational characteristics, size of soil particles, density, clay content, and groundwater level. This study’s results indicate that soil-structure interaction (SSI) must be considered in evaluating the seismic performance of high-rise buildings.