EFFECT OF UNSATURATED EXPANSIVE SOILS ON CANAL LININGS: A CASE STUDY ON TABRIZ PLAIN CANAL, IRAN

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Behrooz Sarand Fariba; HAJIALILUE BONAB MASOUD

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Seminar Paper

Paper Information

Seminar: NATIONAL CONGRESS ON CIVIL ENGINEERING
Year:2016 | Issue:9

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Title

EFFECT OF UNSATURATED EXPANSIVE SOILS ON CANAL LININGS: A CASE STUDY ON TABRIZ PLAIN CANAL, IRAN

Author(s)

Behrooz Sarand Fariba | HAJIALILUE BONAB MASOUD

Keywords

CANAL

EXPANSIVE SOIL

LINING

FILTER

BENDING MOMENT

Abstract

BASED ON THE LINEAR NATURE OF WATER CONVEYANCE PROJECTS, THEY INCLUDE VARIOUS GEOLOGICAL FORMATIONS AND ARE USUALLY IN CONTACT WITH WATER. BECAUSE OF THESE REASONS, MOST OF THE CONSTRUCTED IRRIGATION AND DRAINAGE NETWORKS ARE SUBJECT TO DEFORMATION AND DISPLACEMENT DUE TO PROBLEMATIC SOILS. ONE OF THESE PROBLEMATIC BEDS IS UNSATURATED EXPANSIVE SOIL. THE UNREINFORCED TRAPEZOIDAL CANALS ARE DAMAGED WHEN CONSTRUCTED ON THIS TYPE OF SOILS. IN THE CURRENT PAPER, THIS PHENOMENON HAS BEEN STUDIED USING FIELD OBSERVATIONS, EXPERIMENTAL TESTS, AND NUMERICAL MODELING. IN PRACTICE, A FILTER LAYER IS USED TO REDUCE THE SOIL SWELLING EFFECTS ON CANAL LINING IN TABRIZ PLAIN PROJECT. FOR PERFORMANCE INVESTIGATION OF THIS LAYER, THE AMOUNT OF SOIL SWELLING AND RELATIVE DISPLACEMENT OF CANAL SECTION PANELS ARE MEASURED BY RECORDING OF SURVEYING POINTS. THIS PHENOMENON IS ALSO MODELED NUMERICALLY. USING THE OBTAINED RESULTS, THE SWELLING OF THE BED SOIL IS CALCULATED AT DIFFERENT PARTS OF THE CANAL SECTION WITH FILTER AND WITHOUT IT AND THE LOCATIONS OF MAXIMUM MOVEMENTS ARE DETERMINED. IN ORDER TO PREDICT THE INTERACTION BEHAVIOUR BETWEEN UNSATURATED EXPANSIVE SOIL AND CONCRETE LINING AT DIFFERENT MOISTURE CONDITIONS, THE SPECIAL CONSTITUTIVE UNSATURATED SOIL BEHAVIOUR MODEL IS SELECTED IN SOFTWARE. THE RESULTS OF ANALYSIS SHOW THE LOCATION OF MAXIMUM DEFORMATION AND LINING BENDING MOMENT ON THE CANAL SECTION. IN ADDITION, COMPARISON BETWEEN THE RESULTS OF NUMERICAL MODELING AND FIELD DATA ILLUSTRATES ACCEPTABLE PRECISION OF THE NUMERICAL MODELING.

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Cite

APA: Copy

Behrooz Sarand, Fariba, & HAJIALILUE BONAB, MASOUD. (2016). EFFECT OF UNSATURATED EXPANSIVE SOILS ON CANAL LININGS: A CASE STUDY ON TABRIZ PLAIN CANAL, IRAN. NATIONAL CONGRESS ON CIVIL ENGINEERING. SID. https://sid.ir/paper/943363/en

Vancouver: Copy

Behrooz Sarand Fariba, HAJIALILUE BONAB MASOUD. EFFECT OF UNSATURATED EXPANSIVE SOILS ON CANAL LININGS: A CASE STUDY ON TABRIZ PLAIN CANAL, IRAN. 2016. Available from: https://sid.ir/paper/943363/en

IEEE: Copy

Fariba Behrooz Sarand, and MASOUD HAJIALILUE BONAB, “EFFECT OF UNSATURATED EXPANSIVE SOILS ON CANAL LININGS: A CASE STUDY ON TABRIZ PLAIN CANAL, IRAN,” presented at the NATIONAL CONGRESS ON CIVIL ENGINEERING. 2016, [Online]. Available: https://sid.ir/paper/943363/en

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