这是新加坡南洋理工大学Low教授的文章,在其主页也可以下载
^*C6]*C}te Practical Probabilistic Slope Stability Analysis
dDW],d}B; B. K. Low
ERL(>) Associate Professor, School of Civil & Environmental Engineering, Nanyang Technological University, Singapore
;G!X?(%+ 639798
@SPmb o Abstract
aFo%B; 8m A practical procedure is described for implementing Spencer’s method of slices with varying side force inclination.
[=e61Z The search for the noncircular critical slip surface is accomplished using spreadsheet-automated constrained
T1PWFw\GH optimization. The deterministic formulation is then extended probabilistically to compute the Hasofer-Lind
+<:p`% reliability index via constrained optimization of the dispersion hyperellipsoid in the original space of the random
*[
Wh9 ,H variables. Reliability analyses involving spatially correlated normal and lognormal random variables are
F"hi2@/TI illustrated for an embankment on soft ground, with search for the reliability-based noncircular critical slip surface.
z-[Jbjhd The probabilities of failure and the probability density functions inferred from reliability indices are compared with
'7>Vmr6 Monte Carlo simulations. It is demonstrated that the hitherto complicated problems of locating noncircular critical
wX#\\Jgi surface and reliability analysis involving implicit functions and correlated nonnormals can be solved with relative
.^@+$} ease and transparency using cell-object-oriented constrained optimization in the ubiquitous spreadsheet platform.
[ 此帖被lovekk在2010-10-20 19:25重新编辑 ]