چکیده:
Importance of subterranean structures in no secret to anyone and tunnels are one of the important factors indicating development of countries which are employed for various applications including transportation, water and waste water conveyance and also as a reservoir of various materials, urban subways and …. Established for water providing with the central salt desert, Golah water conveyance tunnel in the length of 10km has been bored employing the full section boring device and it cover is segmental. Tunnel performance will continue perfectly provided that its coating segment can show strength and stability all during their life span and remain in the allowable modifications. Tunnel structure is influenced by the forces resulting from creep and there is a crushed zone between the stony and coating regions. This model has been studied for the MDL and MCL danger levels and a time history analysis has been done to study the tunnel behavior. Intended responses include maximum tunnel diameter in each zone and plastic strain of the concrete as well as damage parameter proportional to the plastic strain. Obtained results revealed that in the second and third zones structure segments with a thickness of 25cm have been modified beyond the maximum limit and fail and that this structure has suffered unrepeatable damage at the MDL danger level and that the highest damages were relevant to the third zone.
خلاصه ماشینی:
Ph. d , Department of civil engineering, Faculty of basic sciences, Shahrekord branch, Islamic azad university, Shahrekord, iran Original Article: Received 10 Nov. 2018 Accepted 02 Dec 2018 Published 30 Dec. 2018 ABSTRACT Importance of subterranean structures in no secret to anyone and tunnels are one of the important factors indicating development of countries which are employed for various applications including transportation, water and waste water conveyance and also as a reservoir of various materials, urban subways and ….
Conventional signs for force components in the circular coating [3] Data collection Required data are as follows; * Tectonic and seismic tectonic data * Analysis of the seismic danger and determination of the required designing parameters * Geotechnical and structural data of the Golab tunnel Following gathering information, the below mentioned stages were followed up.
Modeling, analysis and extraction of the required information * Selection of the finite components software * Determination of data required for modeling * Analysis and data retrieval * Comparison of obtained results with each other and conclusion Analysis of the seismic danger At this level of studies the most intended parameter is the strong movement of ground in controlling the structure designing against the earthquake danger, and maximum acceleration values for the horizontal and vertical components.
Regarding the 60×60m2 size, this point has been also considered and transversal dimension of the tunnel is more than one fourth of the length of its shear(View the image of this page)Designed section enjoy reinforcement.