000015529 001__ 15529
000015529 005__ 20161115135322.0
000015529 04107 $$aeng
000015529 046__ $$k2013-06-12
000015529 100__ $$aBezgin, O.
000015529 24500 $$aAn Insight Into the Influence of Construction Methods on the Lateral Load Capacity of Drilled Deep Foundations

000015529 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015529 260__ $$bNational Technical University of Athens, 2013
000015529 506__ $$arestricted
000015529 520__ $$2eng$$aDeep foundations are frequently employed in the construction of structures where the loads of the superstructure have to be transferred in an economical way to geotechnical strata that rest beyond the reach of shallow foundations. The operation of drilled deep foundation construction equipment frequently employs pressurized fluids or mechanical rotary actions to agitate and remove the soil. The design of a deep foundation element under lateral loads relies on the “as in place” properties of soil. However, it has been observed that the construction method to drill a foundation frequently changes the properties of the soil as well as the surface interaction of the soil with deep foundation element. This influence changes the lateral support stiffness of the soil on the deep foundation element and the surface contact conditions between the deep foundation element and the soil. Such changes heavily influence the lateral load behavior of the deep foundation due to the lack of lateral soil support or reduced lateral soil stiffness as a result of the construction activity. The construction of a deep-foundation is not an isolated process and there is a difference between the “as-conceived” and the “as-built” foundation. Therefore an estimate has to be made regarding what this influence could be before the design of the deep-foundation is complete. In this paper, two case studies relating to the construction of deep foundations of two high rise buildings in New York City will be presented that highlight the effects stated in the previous paragraphs. An experimental study will also be presented that will be reinforced with an analytical finite element investigation to represent the influence of the construction operations on the lateral load capacities of drilled deep foundations.

000015529 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015529 653__ $$aDeep-foundations, drilling methods, drill rig, soil-structure interaction, seismic loads.

000015529 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015529 720__ $$aBezgin, O.
000015529 8560_ $$ffischerc@itam.cas.cz
000015529 8564_ $$s1951386$$uhttps://invenio.itam.cas.cz/record/15529/files/1024.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-RS 29 SOIL-STRUCTURE INTERACTION
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000015529 962__ $$r15525
000015529 980__ $$aPAPER