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Rigidly Framed Earth Retaining Structures.Thermal soil structure interaction of buildings supporting unbalanced lateral earth pressures

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Descripción

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)


Características

  • ISBN: 978-3-642-54643-3
  • Páginas: 318
  • Tamaño: 17x24
  • Edición:
  • Idioma: Inglés
  • Año: 2014

Compra bajo pedidoDisponibilidad: 15 a 30 Días

Contenido Rigidly Framed Earth Retaining Structures.Thermal soil structure interaction of buildings supporting unbalanced lateral earth pressures

Latest research on Rigidly Framed Earth Retaining Structures
Presents Soil Structure Interaction of Buildings Supporting Unbalanced Lateral Earth Pressures
Written by leading experts in the field

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.

Table of contents

Introduction to Rigidly Framed Earth Retaining Structures (RFERS)
Classical Earth Pressure Theory Related to Framed Structures
Closed-Form Expressions for Lateral Deflection of Rigid Frames
Case Study of a Full Scale RFERS in Service
Relationship between Temperature and Earth Pressure for RFERS
Numerical Analysis of Instrumented RFERS
Parametric Study of Earth Pressure

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