Rigidly Framed Earth Retaining Structures

Thermal soil structure interaction of buildings supporting unbalanced lateral earth pressures

Autor: Walid Aboumoussa, Magued Iskander

Język:

Oprawa: Miękka

Wydawca: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG

Dostępność: Dostępna u dostawcy

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Structures placed on hillsides often present a number of challenges and a limited number of economic...

Informacje o książce

Autor

Walid Aboumoussa, Magued Iskander

Język

Angielski

Oprawa

Książka - Miękka

Data wydania

2016

strony

318

EAN

9783662520949

ISBN

366252094X

Enbook ID

14277946

Wydawca

Springer-Verlag Berlin and Heidelberg GmbH & Co. KG

Waga

5212

Wymiary

155 x 235 x 17

Pełny opis

Structures placed on hillsides often present a number of challenges and a limited number of economical choices for site design. An option sometimes employed is to use the building frame as a retaining element, comprising a Rigidly Framed Earth Retaining Structure (RFERS). The relationship between temperature and earth pressure acting on RFERS, is explored in this monograph through a 4.5 year monitoring program of a heavily instrumented in service structure. The data indicated that the coefficient of earth pressure behind the monitored RFERS had a strong linear correlation with temperature. The study also revealed that thermal cycles, rather than lateral earth pressure, were the cause of failure in many structural elements. The book demonstrates that depending on the relative stiffness of the retained soil mass and that of the structural frame, the developed lateral earth pressure, during thermal expansion, can reach magnitudes several times larger than those determined using classical earth pressure theories. Additionally, a nearly perpetual lateral displacement away from the retained soil mass may occur at the free end of the RFERS leading to unacceptable serviceability problems. These results suggest that reinforced concrete structures designed for the flexural stresses imposed by the backfill soil will be inadequately reinforced to resist stresses produced during the expansion cycles. Parametric studies of single and multi-story RFERS with varying geometries and properties are also presented to investigate the effects of structural stiffness on the displacement of RFERS and the lateral earth pressure developed in the soil mass. These studies can aid the reader in selecting appropriate values of lateral earth pressure for the design of RFERS. Finally, simplified closed form equations that can be used to predict the lateral drift of RFERS are presented. KEY WORDS: Earth Pressure; Soil-Structure Interaction; Mechanics; Failure; Distress; Temperature; Thermal Effects; Concrete; Coefficient of Thermal Expansion; Segmental Bridges; Jointless Bridges; Integral Bridges; Geotechnical Instrumentation; Finite Element Modeling; FEM; Numerical Modeling.

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Rigidly Framed Earth Retaining Structures

Thermal soil structure interaction of buildings supporting unbalanced lateral earth pressures

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