Title: Numerical simulation of full-scale steel-frame undergoing soil pressure

Authors: Bayang Zhang; Yaohong Zhu; Fachao Li; Jiawei Wang; Jue Zhu

Addresses: Key Laboratory of Impact and Safety Engineering Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China ' Collaborative Innovation Centre of Coastal Urban Rail Transit, Ningbo University, Ningbo, Zhejiang 315211, China; Ningbo Rail Transit Group Co., Ltd., Ningbo, Zhejiang 315211, China ' Key Laboratory of Impact and Safety Engineering Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China ' Key Laboratory of Impact and Safety Engineering Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China ' Key Laboratory of Impact and Safety Engineering Ministry of Education, Ningbo University, Ningbo, Zhejiang 315211, China

Abstract: During the excavation of connecting channel between the main tunnels using the mechanical shield method or pipe jacking method, the loading situation on the T-joint is very complicated. A vertical loaded full-scale steel-frame which can imitate the surrounding soil loading is invented to ascertain the action mechanism of each part. It can burden seven-ring segments and concern the soil spring effect. Prior to the field test, the entire installation of the facility is modelled, simulated and analysed to evaluate the safety of the construction. The analysis results show that the steel frame rotates seriously when the steel frame is not welded to the base. After welding the steel frame with the base, the rotation phenomenon of the steel frame can be effectively eliminated and the stress and displacement of each part are in line with the standard for design of steel structures.

Keywords: steel frame; vertical loaded; soil spring; earth pressure; seven-ring.

DOI: 10.1504/IJCAT.2022.123236

International Journal of Computer Applications in Technology, 2022 Vol.68 No.1, pp.27 - 38

Received: 27 Feb 2021
Accepted: 27 Apr 2021
Published online: 06 Jun 2022 *