Geotechnical and Foundation Design Considerations

Lew, Marshall; Nissen, J

doi:10.1007/978-1-4615-9753-7_11

Cited by 18 publications

(2 citation statements)

References 3 publications

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“…Consequently, the effects of these factors on the overall response of the structure are neglected. This approach of seismic analysis of structures can only be justified if the structure is founded on rock (Lew and Nissen 1989). However, most of cable-stayed bridges are constructed across coastal estuaries or rivers where poor soil conditions may be present.…”

Section: Introductionmentioning

confidence: 99%

“…For those cases, the soil, the pile foundation, and the superstructure will interact, thus creating a new dynamic system. In this system, the time-displacement relation of the structure at the supports will be different from the free-field ground motion, and the acceleration of the soil mass surrounding the foundation will produce inertial forces on the structure (Lew and Nissen 1989). In addition, the flexibility of the foundation system can have an appreciable effect on the seismic response of the superstructure.…”

Section: Introductionmentioning

confidence: 99%

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Influence of soil conditions on the seismic behaviour of two cable-stayed bridges

Elassaly¹,

Ghali²,

El-Badry³

1995

Can. J. Civ. Eng.

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The results of a case study of the internal forces caused by earthquake in two examples of cable-stayed bridges are presented. A comparison is made between the behaviour of a model in which the structure is idealized without the foundation system and a model in which both the structure and the supporting foundation are idealized. The effects of varying the soil conditions on the seismic response are assessed. Also, the effects of out-of-phase support movements, caused by the lapse of time required for the seismic waves to travel from one support to the other, are considered. It is concluded that the effects of these parameters are significant and should not be ignored in the seismic analysis of cable-stayed bridges.Resume : Les rCsultats d'une Ctude de cas des forces internes causCes par un tremblement de terre dans deux exemples de ponts a haubans sont prtsentCs. Une comparaison est effectuCe entre le comportement d'un modkle dans lequel la structure est idtalisCe sans fondations et le comportement d'un modkle dans lequel elle est idCalisCe avec les fondations. Les effets de la variation des conditions de sol sur la rCponse sismique sont Cvalues. En outre, les effets des mouvements dCphasCs causCs par la pCriode de temps requise pour que les ondes sismiques se propagent d'un appui i l'autre sont examinks. Les auteurs concluent que les effets de ces paramktres sont importants et qu'ils ne devraient pas Ctre ignorCs dans l'analyse sismique des ponts i haubans.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of soil conditions on the seismic behaviour of two cable-stayed bridges

Elassaly¹,

Ghali²,

El-Badry³

1995

Can. J. Civ. Eng.

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Earthquake prediction: a political problem?

Snieder

Eck

1997

Geologische Rundschau

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Earthquake prediction is an area of research of great scientific and public fascination. The reason for this is not only that earthquakes can cause extremely large numbers of fatalities in a short time, but also because earthquakes can have a large social and economic impact on society. Earthquake prediction in the sense of making deterministic predictions about the place, time, and magnitude of earthquakes may very well be fundamentally impossible. However, based on a variety of data, earth scientists can make statements about the probability that earthquakes with a certain size will occur in a certain region over a specified time period. In this context one speaks of ''earthquake forecasting.'' A number of methods to achieve this are presented. However, it is not obvious how society should respond to these forecasts. It is shown that there is a fundamental dilemma for decision makers that statements of scientists concerning earthquake occurrence either contain very specific information but are very uncertain, or contain very general information but are very certain. Earthquake hazard can to a large extent be reduced by formulating and enforcing appropriate building codes. However, given the fact that the majority of the population that is threatened by earthquakes is living in the third world, it is clear that this cannot easily be realized. For these reasons, earthquake prediction is not only a scientific problem: it also has a complex political dimension.

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Insights into the Performance Reliability of Offshore Piles Based on Experience in Hurricanes

Chen

Gilbert²

2014

From Soil Behavior Fundamentals to Innovations in Geotechnical Engineering

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Geotechnical and Foundation Design Considerations

Cited by 18 publications

References 3 publications

Influence of soil conditions on the seismic behaviour of two cable-stayed bridges

Influence of soil conditions on the seismic behaviour of two cable-stayed bridges

Earthquake prediction: a political problem?

Insights into the Performance Reliability of Offshore Piles Based on Experience in Hurricanes

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