Landslide reliability analysis based on transfer coefficient method: A case study from Three Gorges Reservoir

Bi, Renneng; Ehret, Dominik; Xiang, Wei; Rohn, Joachim; Schleier, Markus; Jiang, Jiwei

doi:10.1007/s12583-012-0244-7

Cited by 21 publications

(14 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The factor of safety of the slope without piles is 1.095 by the imbalanced thrust force method . The factors of safety of the piled slope under various embedded depths of the pile top are obtained using the proposed method.…”

Section: Validation Of the Methodsmentioning

confidence: 99%

“…Model tests and numerical simulation methods are feasible to some extent to solve the problem, but they may be not convenient for designers to determine the embedded depth easily and quickly in practical engineering. On the basis of the limit equilibrium theory and the imbalanced thrust force method (the transfer coefficient method), which is a vertical slice method similar to the Low‐Karafiath method in assuming that the direction of the interslice force that is transferred forward at a slice is parallel with the bottom of the slice, an approximate theoretical solution for the embedded depth of the pile top was proposed by Xiao. Because the slide mass is assumed to be cohesionless in the analysis, the extensive applicability of this method is limited.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A calculation method for the embedded depth of stabilizing piles in reinforced slopes

Yan

Xiao

2020

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

Summary Embedded stabilizing piles are a significant optimization measure for traditional piles used to reinforce slopes or landslides. The determination of the embedded depth of the pile top is essential for engineering design. On the basis of the potential overtop‐sliding failure mechanism for a piled slope, the corresponding overall slip surface is assumed to consist of the upper part from the original slip surface of the landslide, and the lower part occurs in the local slide mass upslope of the piles. The imbalanced thrust force method is used to determine the thrust force of the upper slide mass, and a variational calculus method within the framework of limit equilibrium for the lower slide mass is provided to calculate its limit resistance. According to the equilibrium relationship between the thrust force and the limit resistance under a design factor of safety of the piled slope, a closed‐form solution to the piled‐slope stability is specifically derived. It can quantitatively exhibit the influences of some important factors, including the embedded depth on the factor of safety and the corresponding slip surface of the slope. The analysis results of some practical examples show that the factor of safety decreases nonlinearly as the embedded depth increases. The proposed method can be applied in practical engineering.

show abstract

Section: Validation Of the Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A calculation method for the embedded depth of stabilizing piles in reinforced slopes

Yan

Xiao

2020

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

show abstract

“…(4) The calculation of the landslide thrust follows the basic assumption of the transfer coefficient method [17,18], namely, that the seismic load used in the calculation is considered to be pseudo-static load acting on the slip mass. (5) Assume that the earth pressure on the back of the cantilever pile is a superposition of both the earth pressures produced by the landslide thrust and the cable tension, and the distribution is trapezoidal linear.…”

Section: Methodology 21 Pile-soil-anchor Dynamic Coupling Modelmentioning

confidence: 99%

A novel approach for seismic design of anchored sheet pile wall

Zhang

et al. 2016

Teh. vjesn.

View full text Add to dashboard Cite

Original scientific paper From investigations of damaged earth structures after earthquakes, anchored sheet pile wall has proved to be an excellent seismic structure. However, due to the complexity of the stress system, some fundamental theoretical issues have not been completely solved, so the theoretical development of the structure lags behind application, especially in the development of seismic design theory. In order to make up for this deficiency, a new simplified approach was proposed in this paper, based on previous research. In this approach, the dynamic coupling effect of the pile-soil-anchor was considered, and governing equations were established. In addition, to verify the applicability of the proposed approach, large-scale shaking table tests were performed. In the tests, similitude ratios and similar materials were appropriately applied, and horizontal and vertical acceleration time histories recorded at the Wolong station in the Wenchuan earthquake, China, were used to excite the model. Many time history curves, including dynamic and total earth pressures acting on the stabilizing pile, the cable tensions and the displacements of the wall were obtained. By comparison of the earth pressures and cable tensions between the calculations and tests, the correlation coefficient is 0,943 and 0,890 for earth pressures and cable tensions, respectively. It illustrates that the correlation coefficient between tested values and theoretical results using the proposed theoretical calculation approach is high and close to 1,0, and it is proved that the proposed approach is suitable for practical application. Keywords Novi pristup seizmičkom projektiranju ukotvljenog pribojaIzvorni znanstveni članak Istraživanja oštećenih zemljanih konstrukcija nakon zemljotresa pokazala su da je ukotvljeni priboj (zagat) odlična seizmička konstrukcija. Međutim, zbog složenosti sustava naprezanja, neka temeljna teorijska pitanja još nisu potpuno riješena te teorijski razvoj konstrukcije zaostaje za primjenom, posebice u razvoju teorije seizmičkog proračuna. Kako bi se nadoknadio ovaj nedostatak, u radu se predlaže novi pojednostavljeni pristup, temeljen na prethodnom istraživanju. U tom se pristupu razmatrao učinak dinamičke sprege stup (pilon, šip) -zemlja -anker (zatezač), a postavljene su i odgovarajuće jednadžbe. Uz to, kako bi se provjerila primjenjivost predloženog pristupa, provedena su opsežna ispitivanja trešenjem (shaking table tests). U tim su ispitivanjima odgovarajuće primijenjeni omjeri sličnosti i slični materijali, a podaci o vremenu horizontalnog i vertikalnog ubrzanja zabilježeni na Wolong stanici tijekom Wenchuan zemljotresa u Kini, primijenjeni su za pobuđivanje modela. Dobiveni su mnogi podaci, uključujući dinamičke i ukupne pritiske zemlje koji djeluju na stabilizacijski stup, zategnutost užadi i pomake priboja. Usporedbom pritisaka zemljane mase i zategnutosti užadi dobivenih proračunom i ispitivanjima, dobio se koeficijent korelacije od 0,943 i 0,890 za pritisak zemlje, odnosno zategnutosti užadi. To pok...

show abstract

“…Bazimen landslide [58,59] is located on the right bank of the Xiangxi River, which is a major tributary of the Yangtze River. It is a three-level accumulation platform with a grooved shape and main sliding direction of approximately 110° NE.…”

Section: 1 Geological Conditionsmentioning

confidence: 99%

Influencing factor analysis and displacement prediction in reservoir landslides − a case study of Three Gorges Reservoir (China)

Huang

Yin

et al. 2016

Teh. vjesn.

View full text Add to dashboard Cite

Subject reviewThe developmental tendencies of cumulative displacement time series associated with reservoir landslides influenced by large water reservoirs must be effectively predicted. However, traditional methods do not encompass the dynamic response relationships between landslide deformation and its influencing factors. Therefore, a new approach based on the exponential smoothing (ES) and multivariate extreme learning machine methods was introduced to reveal the influencing factors of landslide deformation and to forecast landslide displacement values. First, the influencing factors of reservoir landslide deformation were analysed. Second, the ES method was used to predict the trend term displacement and obtain the periodic term displacement by determining the trend term from the cumulative displacement. Next, multivariate influencing factors were analysed to explain the periodic term displacement. Then, an extreme learning machine (ELM) model was established to predict the periodic term displacement based on the multivariable analysis of influencing factors. Finally, cumulative displacement prediction values were obtained by adding the trend and periodic displacement prediction values. The Bazimen and Baishuihe landslides in Three Gorges Reservoir Area (TGRA) were selected as case studies. The proposed ES-multivariate ELM (ES-MELM) model was compared to the ES-univariate ELM (ES-ELM) model. The results show that reservoir landslide deformation is mainly influenced by periodic reservoir water level fluctuations and heavy rainfall. Additionally, the proposed model yields more accurate predictions than the ES-ELM model. Keywords: displacement prediction; exponential smoothing; Extreme Learning Machine; multivariate influencing factors; reservoir landslide; Three Gorges ReservoirAnaliza faktora utjecaja i predviđanje pomaka klizišta akumulacije -studija slučaja Three Gorges Reservoir (Kina)Pregledni članak Potrebno je učinkovito predviđati kako će se vremenski odvijati kumulativni pomaci povezani s klizištima akumulacija. Međutim, tradicionalne metode ne obuhvaćaju dinamički uspostavljene odnose između deformacije klizišta i faktora koji na to utječu. Dakle, uveden je novi pristup na temelju eksponencijalnog izglađivanja (EI) i multivarijatnih metoda ekstremno učećeg stroja kako bi se otkrili čimbenici od utjecaja na deformacije klizišta i predvidjele vrijednosti pomaka klizišta. Prvo su analizirani faktori koji utječu na deformacije klizišta akumulacije. Zatim je EI postupak rabljen za predviđanje trajanja trenda pomaka i dobivanje trajanja periodičnog pomaka određivanjem trajanja trenda iz kumulativnog pomaka. Dalje, analizirani su multivarijatni utjecajni faktori kako bi objasnili trajanje periodičnog pomaka. Nakon toga, postavljen je model ekstremno učećeg stroja kako bi se predvidjelo trajanje periodičnog pomaka na temelju multivarijatne analize utjecajnih čimbenika. Konačno, dobivene su vrijednosti predviđanja kumulativnog pomaka dodavanjem vrijednosti predviđanja trenda i periodičnog pomaka. Bazimen i B...

show abstract

Landslide reliability analysis based on transfer coefficient method: A case study from Three Gorges Reservoir

Cited by 21 publications

References 23 publications

A calculation method for the embedded depth of stabilizing piles in reinforced slopes

A calculation method for the embedded depth of stabilizing piles in reinforced slopes

A novel approach for seismic design of anchored sheet pile wall

Influencing factor analysis and displacement prediction in reservoir landslides − a case study of Three Gorges Reservoir (China)

Contact Info

Product

Resources

About