Soil-structure interaction : The real behaviour of structures by Institution of Structural Engineers.
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The Institution of Structural Engineers The Institution of Civil Engineers International Association for Bridge and Structural Engineering.
2 Design philosophy
PartI: Structures supported byground
3 Historical note
4 Building structures
5 Bridge structures
6 Off shore structures
7 Cylindrical storage-tank structures
Part II: Ground supported by structures
9 Retaining walls
10 Reinforced-soil structures
11 Tunnels and underground openings
12 Buried structures
13 Conclusions and recommendations
Appendix Interactive analysis of building structures
Foreword: Prior to 1970 design practice tended to consider the ground and the structure in relative isolation.The Institution of Structural Engineers,in support of the need for recognition to be given to interactive effects, formed a Special Study Group in1971to study the matter and make recommendations.This led to the setting-up of anad/zoc committee which prepared the state-of-the art report-Structure-soil int reaction-published in 1978.In accordance with Institution procedures the relevance of the 1978 document to current practice was reviewed,and the need for revision and extension was identified. The Institution,with the cooperation of the Institution of Civil Engineers and the International Association for Bridge and Structural Engineering,has responded to the current demand for adequate definition of the problems presented by interactive effects and has initiated the preparation of this comprehensive guidance covering most types of structure.
Sam Thor burn, Chairman, Joint Committee
The real behaviour of structures in contact with ground involves aninteractive process beginning with the construction phase and ending with a state of balance after a period of adjustment of stresses and strains within the structure and within the ground influenced by the structure.
Building structures, storage tanks, bridges adjacent to high embankments on soft ground, buried pipes and culverts, retention systems, tunnels, and offshore plat¬ forms all experience interactive effects.
A retaining structure is a classic example of the problem of strain and time-dependent effects causing variations in ground pressures, and of the response of a structure to these changes. A subjective decision may be made by designers to ignore the mechanism of structural behaviour known as soil-structure interaction, but interaction will occur and its effects may be more than envisaged. A decision to design a structure in isolation can result in a satisfactory solution provided either:
• the ground can sustain the loading with acceptable displacements, or
• the ground is treated by some suitable technique to provide appropriate stiffness and strength.
Piled foundations often have been employed to provide relatively rigid foundations and have permitted structures to be designed in isolation. Piled foundations however, although reliable, are not necessarily economic and may result in over-conservative designs in many situations.
A sympathetic treatment of problems of interaction is required except where either the stiffness and strength of the ground or of the structure are clearly dominant. There are situations where interaction results from the existence of a structure at a particular location rather than from its weight on the ground. Ground displacements and accelerations arising from actions such as ground subsidence caused by mineral extraction, major landslips or seismic events are typical instances.
The actual behaviour of structures relates to the in herent spatial variations in the ground, and it should be appreciated that these variations arenot always readily identifiable by occasional and local boring, sampling and testing.
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Soil-structure interaction : The real behaviour of structures pdf
⏩Author: Institution of Structural Engineers
⏩Publisher: Amer Society of Civil Engineers (June 1, 1989)
⏩Size: 12.1 MB
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