Numerical investigation on the responses of existing single piles due to adjacent twin tunneling considering the lagging distance

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Phutthananon, Chana; Lertkultanon, Somkiat; Jongpradist, Pornkasem; Duangsano, Ochok; Likitlersuang, Suched; Jamsawang, Pitthaya;

ปีที่เผยแพร่ (ค.ศ.): 2023

วารสาร: Underground Space (China) (2096-2754)

Volume number: 11

หน้าแรก: 171

หน้าสุดท้าย: 188

จำนวนหน้า: 18

นอก: 2096-2754

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85157970843&doi=10.1016%2fj.undsp.2022.12.005&partnerID=40&md5=b7f75a971dd0db6357273546a28c21a6

ภาษา: English-Great Britain (EN-GB)

ดูบนเว็บไซต์ของสำนักพิมพ์

บทคัดย่อ

This paper presents an assessment of the influence of the lagging distance between two horizontal tunnel faces of the side-by-side twin tunnels on the responses of the adjacent existing single pile by a series of three-dimensional numerical analyses. Two different relative positions between the pile tip and the tunnel are considered to cover the short and long pile behaviors. The responses of the existing pile in terms of pile head settlement, axial force, lateral movement and bending moment are considered and discussed. The numerical results indicate that the lagging distance between twin tunnel faces significantly affects not only the soil movements but also the responses of the existing single pile. The critical case that produces unsatisfactory pile responses due to twin tunneling is when the lagging distance between the second tunnel and the preceding tunnel equals to the shield length. It is recommended that the lagging distance be not less than three times of shield length when the two tunnels need to be concurrently excavated. © 2023 Tongji University

คำสำคัญ

Pile responses, Tunnel lagging distance, Twin tunnels