000004511 001__ 4511
000004511 005__ 20141118192701.0
000004511 0177_ $$2doi$$a10.3850/978-981-07-2219-7_P201

000004511 0247_ $$210.3850/978-981-07-2219-7_P201
$$adoi
000004511 04107 $$aeng
000004511 046__ $$k2012-05-23
000004511 100__ $$aWu, Shih-Hsuan
000004511 24500 $$aReliability-Based Design of Base Stability for Wide Excavations in Clay with Consideration of Model Bias

000004511 24630 $$n5.$$pProceedings of the 5th Asian-Pacific Symposium on Structural Reliability and its Applications
000004511 260__ $$bResearch Publishing, No:83 Genting Lane, #08-01, Genting Building, 349568 SINGAPORE
000004511 506__ $$arestricted
000004511 520__ $$2eng$$aDesign equations for base heave stability in clay are typically simplified and may have conservative bias for design safety. In this study, three popular base heave design equations are calibrated based upon real case histories with wide excavation. It is found that modified Terzaghi's method is nearly unbiased, while Bjerrum and Eide's and slip circle methods are biased to the conservative side. The model uncertainty associated with Bjerrum and Eide's method is the lowest, while that associated with the slip circle method is the highest. The reliability levels for design code regulations are verified, and reliability-based design charts are provided as shown in Fig. 1. It is revealed that the recommended FSs for modified Terzaghi's and Bjerrum-Eide methods in design codes (FS = 1.5 and 1.2 respectively) provide safety level higher than that for slip circle method (FS = 1.2).

000004511 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004511 653__ $$aWide excavation, Base heave, Reliability-based design, Model uncertainties.

000004511 7112_ $$a5th Asian-Pacific Symposium on Structural Reliability and its Applications$$cSingapore (SG)$$d2012-05-23 / 2012-05-25$$gAPSSRA2012
000004511 720__ $$aWu, Shih-Hsuan$$iOu, Chang-Yu
000004511 8560_ $$ffischerc@itam.cas.cz
000004511 8564_ $$s545512$$uhttps://invenio.itam.cas.cz/record/4511/files/P201.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004511 962__ $$r4180
000004511 980__ $$aPAPER