000			a
999			_c20606 _d20606
003			OSt
005			20240117144145.0
008			240117b xxu||||| |||| 00| 0 eng d
040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_922798 _aChen, Zike
245			_aPlastic displacement solutions for two-way unequal-pressure non-circular tunnels based on Mogi–coulomb criterion and applications
250			_aVol.53(4), Aug
260			_aUSA _bSpringer _c2023
300			_a949-955p.
520			_aBased on the Mogi–Coulomb criterion, the elastic–plastic analysis of the ideal elastic–plastic adjoining rock mass of a non-circular tunnel with pressures in two directions was performed using complex variable function theory and the stress construction method. The analytical expressions of the radius of the non-circular plastic zone and the radial displacement of the tunnel wall were obtained by a mapping function, and the solutions were examined using engineering examples. The results showed that the intermediate principal stress caused the radius of the plastic zone and the displacement of the tunnel wall to change symmetrically. The increase in the lateral pressure coefficient changed the shape of the plastic zone. The radius of the plastic zone of the tunnel roof and the floor increased, and the displacement of the plastic zone of the two sides of the tunnel decreased. The displacement of the tunnel wall increased first and then decreased at 0° of the inner boundary angles of the tunnel, and it increased at other angles. Therefore, this paper provides a scientific basis for the design of two-way unequal-pressure non-circular tunnel supports, and it has certain guiding significance for engineering practice.
650		0	_94690 _aConstruction Engineering and Management (CEM)
700			_922799 _aZeng, Kaihua
773	0		_x 0971-9555 _dSwitzerland Springer _tIndian geotechnical journal
856			_uhttps://link.springer.com/article/10.1007/s40098-023-00720-9 _yClick here
942			_2ddc _cAR