Influence of Gravity Loading on the Ground Reaction Curve at Tunnel Crown Based on the Nonlinear Unified Strength Criterion
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2013, Vol 6, Issue 5
Abstract
This research effort, considers the true triaxial stress state and takes into account the effect of body forces due to the weight of the Excavation Damaged Zone (EDZ) to develop a new semi-analytical solution describing for the induced stress field within the weak rock mass surrounding a circular tunnel. The solution approach is based on the generalized nonlinear unified strength criterion; by changing the effect of intermediate principal stress, new solutions based on different failure criteria, e.g. Hoek and Brown and Generalized Twin Shear Stress can be obtained. Based on this approach, a new Ground Reaction Curve (GRC) for tunnel’s crown is obtained. The new GRC, unlike the existing ones, contains a critical point which signifies the maximum displacement possible before loosening occurs. The new GRC is validated through standard examples and its significance in investigating stability is important in tunnel design.
Authors and Affiliations
Hamid Mohammadi *| Mining Engineering Department, Shahid Bahonar University of Kerman, Kerman, Iran, email: h.mohammadi@kgut.ac.ir, Mohammad Ali Ebrahimi Farsangi| Mining Engineering Department, Shahid Bahonar University of Kerman, Kerman, Iran, Hossein Jalalifar| Mining Engineering Department, Shahid Bahonar University of Kerman, Kerman, Iran, Ali Reza Ahmadi| Mechanical Engineering Department, Graduate University of Advanced Technology, Kerman, Iran
Keywords
Related Articles
- EP ID EP6167
- DOI -
- Views 320
- Downloads 8
A survey study on hydro geotechnical properties of mines
To response some problems in soil engineering it requires a detailed knowledge of the mechanical properties of soils that is probably among the most complex materials to be studied from this point of view. This paper exa...
gap engineering in two-dimensional photonic quasicrystal with twelvefold symmetry
Photonic quasicrystals are special class of aperiodic crystals , which can exhibit photonic band gaps, But the lack of periodicity in the quasiperiodic structures make impossible the determining a unitcell for the calcul...
Synthesis of vanadium oxide nanotubes using hydrothermal method
Vanadium oxide nano tubes (VOx -NT) have been prepared by mixing hexadecylamine with V2 O5 ·nH2 O gels. This procedure was followed by an hydrothermal treatment (150–180? C, 2–7 days) which leads to a large quantity of V...
Comparative Study of the Commitments Contract Parties the Sale of Electronic and Traditional
E-commerce involved several activities so electronic exchange of goods and services, instant delivery of digital content, electronic funds transfer, Forward mail, business plans, joint design and engineering, Sourcing, g...
A CONCEPTUAL LOGISTIC SYSTEM FOR PRIVATE ENTERPRISE
The concept of the logistic system and technology of logistics have made substantial advances in decades since World War II. Today, logistics is a word that sounds scientific; however, there is still some area where much...