Pore Water Pressure Development in Soft Soil due to Installation and Loading of Controlled Modulus Columns

Lech Bałachowski; Jakub Konkol

doi:10.1061/(asce)gt.1943-5606.0002675

Pore Water Pressure Development in Soft Soil due to Installation and Loading of Controlled Modulus Columns

Abstract

Excess pore water pressure (EPWP) development and decay due to the installation and static loading tests of controlled modulus columns (CMC) in soft soil was measured with piezometers equipped with low air entry (LAE) filters and a piezocone (CPTU) equipped with a high air entry (HAE) filter. The HAE filter allows for detailed detection of EPWP in short time intervals during construction of CMC. The influence zone due to the installation of the CMC group extends up to 40D (D = column diameter) with significant installation effects and high EPWP within the zone of 7D. The influence zone during the static loading test is much narrower and does not exceed 2D. The presented research shows the applicability of using a CPTU in EPWP monitoring during CMC construction and clarifies some effects of CMC group installation.

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DOI:: Digital Object Identifier (open in new tab) 10.1061/(ASCE)GT.1943-5606.0002675
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Articles

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artykuły w czasopismach

Published in:

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING no. 147,
ISSN: 1090-0241

Language:

English

Publication year:

2021

Bibliographic description:

Bałachowski L., Konkol J.: Pore Water Pressure Development in Soft Soil due to Installation and Loading of Controlled Modulus Columns// JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING -Vol. 147,iss. 12 (2021), s.060210-

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