Scholarlink

<p>This study proposed the influenced zone of deep excavations in medium dense sand through three representative deep excavation projects in Ho Chi Minh City, Vietnam. Finite element analyses were conducted to simulate the three studied projects, concluding the Hai Quan, Madison, and SaiGon Centre projects. The Hardening Soil model was adopted, and the stiffness parameters were calibrated through the back-analysis method. An extended study was performed to estimate the effect of distributed load on the influenced zones. The results showed that the influenced zone of deep excavation can be divided into three parts: I – Primary influenced zone, II – Secondary influenced zone, and III – Weak influenced zone. The displacement contour defining Zone I ranged from 0.15%H to 0.24%H, corresponding to distances of 1.1–1.3&#xa0;H from the top of the diaphragm wall (D-wall), where H is the excavation depth. For Zone II, it was bounded by a 12.5&#xa0;mm displacement contour, and the distances from the top of the D-wall to this contour were between 2&#xa0;H and 2.8&#xa0;H. The study also demonstrated that the applied surface load affected Zone I only for excavation width B &lt; 4&#xa0;H. The findings contributed practical guidance for evaluating the safety of structures near the deep excavation.</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

Investigating the Influenced Zone of Deep Excavations in Medium Dense Sand

  • 期刊论文

  • 发表日期：

    2026年5月23日

查看全文
  • Quoc Bao Nguyen,
  • Thai Trung Le,
  • Van Qui Lai

摘要

This study proposed the influenced zone of deep excavations in medium dense sand through three representative deep excavation projects in Ho Chi Minh City, Vietnam. Finite element analyses were conducted to simulate the three studied projects, concluding the Hai Quan, Madison, and SaiGon Centre projects. The Hardening Soil model was adopted, and the stiffness parameters were calibrated through the back-analysis method. An extended study was performed to estimate the effect of distributed load on the influenced zones. The results showed that the influenced zone of deep excavation can be divided into three parts: I – Primary influenced zone, II – Secondary influenced zone, and III – Weak influenced zone. The displacement contour defining Zone I ranged from 0.15%H to 0.24%H, corresponding to distances of 1.1–1.3 H from the top of the diaphragm wall (D-wall), where H is the excavation depth. For Zone II, it was bounded by a 12.5 mm displacement contour, and the distances from the top of the D-wall to this contour were between 2 H and 2.8 H. The study also demonstrated that the applied surface load affected Zone I only for excavation width B < 4 H. The findings contributed practical guidance for evaluating the safety of structures near the deep excavation.