EFFECT OF THE DISTANCE BETWEEN TWIN TUNNELS ON THE INTERNAL FORCES IN THEIR LININGS UNDER THE IMPACT OF EARTHQUAKES - A CASE STUDY IN HANOI

  • Ngoc Anh Vu Le Quy Don Technical University, Hanoi, Vietnam
  • Chu Quang Cao Le Quy Don Technical University, Hanoi, Vietnam
  • Viet Thanh Dinh Le Quy Don Technical University, Hanoi, Vietnam
  • Van Dua Nguyen Le Quy Don Technical University, Hanoi, Vietnam
Keywords: Dynamic analysis, artificial acceleration, twin tunnels, numerical simulation, shallow tunnels

Abstract

Calculating earthquake-resistant underground structures is becoming more and more important in general design, many civil structures in the field of constructions over the world have used different tools to calculate this problem. However, among of them, there are few publications which are interested in the influence of the distance between the two tunnels on the internal forces occurring in the tunnel linings. On the basis of using the commercial software Plaxis, the input data is the acceleration graph generated under the condition of matching the response spectrum in accordance with the conditions in Hanoi. This is done by computing with models in case of the distance between the two tunnels increases. The results show a significant influence of the distance between the two tunnels, when their distance is less than 3 times the tunnel diameter, this effect will decrease in case of the larger distance.

điểm /   đánh giá
Published
2023-07-05
Issue
Vol. 6 No. 01 (2023)
Section
Bài viết