The numerical analysis of Siduhe tunnel-type-anchor chooses Drucker-Prager model based on Rankine criterion. Formula manipulation on incremental theory of plasticity about Drucker-Prager yield criterion and Rankine criterion are introduced here. We also manipulate the yield function and plastic potential function’s first partial derivation and second partial derivation.
This thesis analyze noise source and principle of vehicle, then deeply study partial coherence function to identify vehicle noise, basing on the analysis of the primary methods in identifying vehicle noise home and abroad.
This thesis particularly analyzes the principle of coherence technology and the coherence analysis of the system based on the definition of coherence function. Then using power chart and conditional power chart, the formula of partial coherence function in identifying noise sources is obtained.
This paper introduces the research results on the distribution of the basic variables of actions and resistances in steel welded railway bridges and the value of the parameters. The paper also proposes the expression formulas and partial coefficients based on reliability theory, derived by using the fraetile method.
The paper calculates the partial coefficients by using the "fractile method",the method proposed by water conservancy and water power department, and the RBDF method,according to the characters of the lining limit states,selecting the partial coefficient of the effects of actions and resistance strength,and the adjustment coefficient of reliability. Finally,the paper suggests the value of partial coefficients by analysis and comparison.
According to the calculation characteristics of railway tunnel portal structure, the limit states design equations of tunnel portal structure reliability are established. Based on the given object reliability index β nom , the partial coefficients of tunnel portal structure are calculated, and the basic principle and specifics process of the calculation are presented.
This paper analyzes on the causes ofthe cracks on the prestressed concrete T -beam occurring in the winter construction ofthe Jingda Superhighway Engineering,points outthat the cracks can be avoided through m odifying partial reinforcem entdesign,changing the extracting pipe as the corrugated pipe,and strengthening the norm alized construction of each process,and probes into the treating m ethods for the prestressed T -beam having cracks on it.
We also compute the Euler characteristic of the space of partial flags containingnt and give a connection with hyperplane arrangements.
Then theG0-orbit structure ofZ is described explicitly by the partial Cayley transforms of a certain hermitian symmetric sub-flagF?Z.
Semi-invariants of quivers can be constructed by taking admissible partial polarizations of the determinant of matrices containing sums of matrix components of the representation and the identity matrix as blocks.
We define a partial order on the set No,c of pairs (O,C), where O is a nilpotent orbit and C is a conjugacy class in A(O), Lusztig's canonical quotient of A(O).
We also give formulas for intersection pairings on resolutions of singularities (or more precisely partial resolutions, since orbifold singularities are allowed) of the quotients.