ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2013, Vol. 33 ›› Issue (5): 378-382.DOI: 103973/jissn1672-741X201305008
Previous Articles Next Articles
DU Libing, YAN Songhong, CAI Baijie
Received:
Revised:
Online:
Published:
Abstract:
Crack factor (CF) is proposed on basis of Griffith criterion to analyze the safety of the lining of the smallspaced intersecting tunnel constructed by benchcut method, as well as the safety of the lining of the existing tunnel. It is supposed that crack will occur to the lining when CF is more than 1 and that the lining is safe when CF is less than 1. The safety of the tunnel lining is analyzed, on basis of the crack factor and the safety coefficient of the lining provided in relevant standards, by means of ANSYS. Conclusions drawn are as follows: during the process of the construction of the new tunnel, the circumferential safety factor of the lining of the underconstruction tunnel at the intersection point is less than the longitudinal safety factor, but they both meet the requirements of relevant standards; the crack factor of the lining of the existing tunnel is far less than 1, and the cloud picture of the crack factor is symmetrical along the axis of the underconstruction tunnel.
Key words: intersecting tunnel, smallspaced, bench method, crack factor CF, Griffith criterion, ANSYS
DU Libing, YAN Songhong, CAI Baijie. Study on Safety of Smallspaced IntersectingTunnels Constructed by Benchcut Method[J]. Tunnel Construction, 2013, 33(5): 378-382.
0 / / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: http://www.suidaojs.com/EN/103973/jissn1672-741X201305008
http://www.suidaojs.com/EN/Y2013/V33/I5/378
Dynamic Model and Vibration Analysis of TBM Edge Disccutter Based on MATLAB/Simulink