Study on Numerical Simulation of Thrusting Force of Shield Launching and  Receiving: A Case Study on Glassfiber Reinforced Plastic (GFRP) Pile  Cut Directly by Shield Machine Used in Line No. 15 of Beijing Metro

doi:10.3973/j.issn.1672-741X.2016.03.003

Tunnel Construction ›› 2016, Vol. 36 ›› Issue (3): 264-269.DOI: 10.3973/j.issn.1672-741X.2016.03.003

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Study on Numerical Simulation of Thrusting Force of Shield Launching and  Receiving: A Case Study on Glassfiber Reinforced Plastic (GFRP) Pile  Cut Directly by Shield Machine Used in Line No. 15 of Beijing Metro

LIU Jun¹, XUN Guifu¹, WANG Fang², JIN Xin¹

(1. School of Civil Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;  2. Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China)

Received:2015-08-21 Revised:2015-11-16 Online:2016-03-20 Published:2016-03-30

Abstract

Abstract:

The Thrusting force is the main control parameter in the shield launching and receiving. In this paper, the rules of retaining pile stressing and ground surface settlement under different thrusting forces on the cutterhead during shield launching and receiving are studied by means of finite difference FLAC3D software, with the glassfiber reinforced plastic (GFRP) pile cut directly by a 6 m shield machine used in Line No. 15 of Beijing Metro as an example. The study results show that: 1) Settlement would occur to the ground surface when the thrusting force of shield launching is larger than 10 000 kN. 2) The GFRP pile would fall towards the free side when the thrusting force of shield receiving is larger than 8 000 kN. The results can provide guidance for the design of GFPR pile and the safe construction of shield tunneling.

Key words: Beijing Metro, shield launching, shield receiving, thrusting force, glassfiber reinforced plastic (GFRP) pile, numerical simulation

CLC Number:

U 455

LIU Jun, XUN Guifu, WANG Fang, JIN Xin. Study on Numerical Simulation of Thrusting Force of Shield Launching and  Receiving: A Case Study on Glassfiber Reinforced Plastic (GFRP) Pile  Cut Directly by Shield Machine Used in Line No. 15 of Beijing Metro[J]. Tunnel Construction, 2016, 36(3): 264-269.

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Study on Numerical Simulation of Thrusting Force of Shield Launching and  Receiving: A Case Study on Glassfiber Reinforced Plastic (GFRP) Pile  Cut Directly by Shield Machine Used in Line No. 15 of Beijing Metro

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