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http://dx.doi.org/10.7843/kgs.2020.36.1.29

The Structural Characteristics of the Temporary Cofferdam in Accordance with the Shape and Size Obtained from Numerical Analysis  

Kim, Hyun-Joo (EPS Engrg. Co., Ltd.)
Choi, Jin-O (EPS Engrg. Co., Ltd.)
Gwon, Yun-Ho (EPS Engrg. Co., Ltd.)
Publication Information
Journal of the Korean Geotechnical Society / v.36, no.1, 2020 , pp. 29-38 More about this Journal
Abstract
These days the circular cross section cofferdam has been frequently used for the earth retaining structures or cut off wall such as ventilating opening, intake tower in cofferdam, shaft for emergency. By the arching effect, the circular cross section type cofferdam has more advantage than a polygon cofferdam in terms of the structural forces and moment. This paper shows the proper approach to analyze the circular cross section cofferdam using 2D Finite Element Method (FEM) for the circular stiffener (ring beam) evaluation. Besides, the various shapes of cofferdam indluding circular cross section have modeled the 3D Finite Element Mothod (FEM). The circular cross section cofferdam shows the minimum reaction force compared with the other shapes of cofferdam.
Keywords
Arching effect; Circular steel cofferdam; Elasto-plastic analysis; Finite element analysis; Ring beam;
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