Analysis on and Countermeasures for Unbalanced Forces on Cutterhead of Largediameter Shield

doi:10.3973/j.issn.1672-741X.2014.01.013

Tunnel Construction ›› 2014, Vol. 34 ›› Issue (1): 78-82.DOI: 10.3973/j.issn.1672-741X.2014.01.013

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Analysis on and Countermeasures for Unbalanced Forces on Cutterhead of Largediameter Shield

HAN Weifeng^1,2, ZHOU Jianjun^1,2， LI Fengyuan^1,2

(1. State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, Henan, China; 2. China Railway Tunnel Group Co., Ltd., Luoyang 471009, Henan, China)

Received:2013-05-10 Revised:2013-06-19 Online:2014-01-20 Published:2014-01-21

Abstract

Abstract:

In heterogeneous ground, the cutterhead of largediameter shield is subject to unbalanced force. In the paper, the unbalanced force on the cutterhead of largediameter shield in heterogeneous ground is analyzed and the optimized design of the cutterhead of largediameter shield is proposed. Ancillary supporting wheels are added to the cutterhead to transfer the cutterhead under cantilever state to that under simple support state. Comparison and contrast is made between the cutterhead before optimization and that after optimization by means of finite element analysis, which proves that the force conditions of cutterhead with supporting wheels added have been greatly improved. 

Key words: shield, cutterhead, unbalanced force, supporting wheel, finite element analysis

HAN Weifeng, ZHOU Jianjun，LI Fengyuan. Analysis on and Countermeasures for Unbalanced Forces on Cutterhead of Largediameter Shield[J]. Tunnel Construction, 2014, 34(1): 78-82.

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Analysis on and Countermeasures for Unbalanced Forces on Cutterhead of Largediameter Shield

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