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Behaviour of reinforced soil walls u...

El-Emam, Magdi M.

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Behaviour of reinforced soil walls under earthquake loading.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Behaviour of reinforced soil walls under earthquake loading./
作者:	El-Emam, Magdi M.
面頁冊數:	411 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-01, Section: B, page: 0337.
Contained By:	Dissertation Abstracts International65-01B.
標題:	Engineering, Civil. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ86222
ISBN:	0612862224

Behaviour of reinforced soil walls under earthquake loading.
El-Emam, Magdi M.

Behaviour of reinforced soil walls under earthquake loading. - 411 p.

Source: Dissertation Abstracts International, Volume: 65-01, Section: B, page: 0337.

Thesis (Ph.D.)--Queen's University at Kingston (Canada), 2003.

A review of the current state of the practice with respect to seismic analysis, design and performance of reinforced soil walls reveals that current methods have not advanced significantly beyond Mononobe-Okabe earth pressure theory which dates back to the 1920's and Newmark sliding block models that date back to the 1960's. The lack of improvement in seismic analysis and design has been hampered by a lack of physical data to validate and/or guide the development of new methods.

ISBN: 0612862224Subjects--Topical Terms:

783781
Engineering, Civil.

Behaviour of reinforced soil walls under earthquake loading.
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245 1 0 $a Behaviour of reinforced soil walls under earthquake loading.
300 $a 411 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-01, Section: B, page: 0337.
500 $a Adviser: R. J. Bathurst.
502 $a Thesis (Ph.D.)--Queen's University at Kingston (Canada), 2003.
520 $a A review of the current state of the practice with respect to seismic analysis, design and performance of reinforced soil walls reveals that current methods have not advanced significantly beyond Mononobe-Okabe earth pressure theory which dates back to the 1920's and Newmark sliding block models that date back to the 1960's. The lack of improvement in seismic analysis and design has been hampered by a lack of physical data to validate and/or guide the development of new methods.
520 $a A series of fourteen 1 m-high instrumented reduced-scale model shaking table tests of reinforced soil walls with full-height rigid panel facings was carried out. The models were subjected to a stepped-amplitude sinusoidal base acceleration record until excessive deformation (failure) occurred.
520 $a Physical measurements from the experimental program are compared to predicted results using a FLAC numerical model. The numerical model is shown to give generally good agreement between measured and predicted response features of the reduced-scale physical tests. The numerical model is then scaled-up to prototype-scale to investigate the influence of wall height, facing rigidity, facing inclination, and a range of soil and reinforcement properties on wall response due to base excitation using an actual earthquake record.
520 $a Both experimental and numerical test results showed that the facing toe boundary condition has a significant effect on the seismic response of reinforced soil walls. While a horizontal restrained toe condition reduced wall lateral deformations, greater base acceleration amplification was observed compared to otherwise identical models constructed with a sliding toe. The experimental results showed that the magnitude of cumulative facing lateral displacement under base excitation was less for nominal identical walls with: (a) less facing panel mass, (b) an inclined facing, (c) longer reinforcement layers, (d) stiffer reinforcement, and (e) smaller reinforcement vertical spacing.
520 $a Both physical and numerical results show that current limit equilibrium-based pseudo-static methods under-estimate the failure wedge size, critical accelerations, and vertical toe loads. In addition, these methods do not consistently capture the magnitude and distribution of reinforcement loads during base excitation. Additional deficiencies and implications to current seismic design methods are identified in the thesis.
590 $a School code: 0283.
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790 1 0 $a Bathurst, R. J., $e advisor
790 $a 0283
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ86222