Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation

doi:10.1007/s11709-017-0399-5

Frontiers of Structural and Civil Engineering

2018, Vol. 12

Issue (1): 67-80 https://doi.org/10.1007/s11709-017-0399-5

本期目录

Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation

Sergio A. MARTÍNEZ-GALVÁN(

), Miguel P. ROMO

Institute of Engineering, National University of Mexico, Mexico City 04510, Mexico

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Abstract：

The new type of deep foundation for buildings on saturated, compressible-low strength clayey soil deposits, branded structural cell essentially consists of a rigid concrete top slab, structurally connected to reinforced concrete peripheral walls (diaphragms) that enclose the natural soil. Accordingly, as the initial volume of the confined soft clays within the lateral stiff diaphragms will remain constant upon loading, the hollowed structural cell will be “transformed” into a very large cross-section pillar of unit weight slightly higher than that of the natural soft clayey soil. This type of foundation seems to be a highly competitive alternative to the friction pile-box foundations (widely used in Mexico City clays), due to its economic and environmental advantages. Economies result, for example, from the absence of huge excavations hence sparing the need of earth retaining structures. Further savings result from appreciably smaller concrete volumes required for building the structural cell than the friction pile-box foundation; moreover, the construction time of the former is much shorter than that of the latter. Regarding the impact to the environment, less air contamination follows from the fact that both traffic jams and soil excavation lessen appreciably. Considering these facts and others regarding scheduling, it was decided to replace 48-friction pile-box foundations specified in the master plan project by this new type of foundation. The overall behavior of these cell foundations over a five-year period is fared from close visual observations and their leveling during the first three years after their construction.

Key words： deep foundations bearing capacity resistant moment structural cell 3D numerical modeling

收稿日期: 2016-06-22 出版日期: 2018-03-08

Corresponding Author(s): Sergio A. MARTÍNEZ-GALVÁN

引用本文:

. [J]. Frontiers of Structural and Civil Engineering, 2018, 12(1): 67-80.
Sergio A. MARTÍNEZ-GALVÁN, Miguel P. ROMO. Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation. Front. Struct. Civ. Eng., 2018, 12(1): 67-80.

链接本文:

https://academic.hep.com.cn/fsce/CN/10.1007/s11709-017-0399-5
https://academic.hep.com.cn/fsce/CN/Y2018/V12/I1/67

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