[1] Ouyang Xiaoyong, , Zhao Wenguang, et al. Calculation mode of side friction for large open caisson [J]. Journal of Southeast University (English Edition), 2015, 31 (1): 130-136. [doi:10.3969/j.issn.1003-7985.2015.01.022]

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Calculation mode of side friction for large open caisson()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

31

Issue:

2015 1

Page:

130-136

Research Field:

Civil Engineering

Publishing date:

2015-03-30

Info

Title:

Calculation mode of side friction for large open caisson

Author(s):

Ouyang Xiaoyong¹;  2;  3;  Zhao Wenguang¹;  2;  Li Jin³;  Li Song³

¹School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China
²Hubei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan 430074, China
³CCCC Second Highway Engineering Co., Ltd, Xi’an 710065, China

Keywords:

large open caisson;  side friction;  distribution diagram;  calculation mode

PACS:

TU74

DOI:

10.3969/j.issn.1003-7985.2015.01.022

Abstract:

To overcome the problems in design methodologies and construction control measures for the large open caisson, systematic research was conducted on the side friction calculation mode of the large open caisson. Based on the field monitoring data of lateral soil pressure on the side wall of the open caisson for the southern anchorage of the Maanshan Yangtze River Highway Bridge, the statistical result of the side friction under different buried depths of the cutting edge of the open caisson was back-analyzed; and the side friction distribution of the large open caisson was underlined. The analysis results indicate that when the buried depth of the cutting edge is smaller than a certain depth H₀, the side friction linearly increases with the increase in the buried depth. However, as the buried depth of the cutting edge is larger than H₀, the side friction shows a distribution with small at both ends and large in the middle. The top of the distribution can be regarded as a linear curve, while the bottom as a hyperbolic curve. As the buried depth of cutting edge increases continuously, the peak value of the side friction linearly increases and the location of the peak value gradually moves down. Based on the aforementioned conclusions, a revised calculation mode of the large open caisson is presented. Then, the calculated results are compared with the field monitoring data, which verifies the feasibility of the proposed revised calculation mode.

References:

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Memo

Memo:

Biographies: Ouyang Xiaoyong(1962—), male, graduate; Zhao Wenguang(corresponding author), male, doctor, professor, zhao_wenguang1037@126.com.
Foundation item: Project supported by China Communications Construction Company Limited(No.2008-ZJKJ-11).
Citation: Ouyang Xiaoyong, Zhao Wenguang, Li Jin, et al. Calculation mode of side friction for large open caisson[J].Journal of Southeast University(English Edition), 2015, 31(1):130-136.[doi:10.3969/j.issn.1003-7985.2015.01.022]

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