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| Research on the Factors Influencing Flexural Rigidity of Duct Piece Joint of Shield Tunnel |
| SUN Wen-hao1, JIAO Qi-zhu1, LAN Yu2 |
| 1. China Railway Siyuan Survey and Design Group Co. Ltd, Wuhan, Hubei 430063, China; 2. Chongqing Express Highway Development Co. Ltd., Chongqing 400042, China |
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Abstract Research purposes: The purposes are to deduce the calculation formula for flexural rigidity of duct piece joint of shield tunnel and do the research on the change regularity of the different factors influencing the flexural rigidity of duct piece joint.
Research conclusions: The effective highness and eccentricity of the contacting face of duct piece joint have big influences on flexural rigidity of duct piece joint, so it is an effective way to change the structure size for adjusting flexural rigidity of duct piece joint in design of duct piece structure.
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Received: 30 March 2007
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2008, Vol. 25 
