FELA evaluation of undrained bearing capacity of cutting edge of circular open caisson

被引：5

作者：

Chavda, Jitesh T. ^{[1
]}

Jitchaijaroen, Wittaya ^{[2
]}

Keawsawasvong, Suraparb ^{[3
,5
]}

Rattanadecho, Phadungsak ^{[4
]}

机构：

[1] Sardar Vallabhbhai Natl Inst Technol, Dept Civil Engn, Surat, India

[2] Thammasat Univ, Fac Engn, Thammasat Sch Engn, Dept Civil Engn, Pathum Thani, Thailand

[3] Thammasat Univ, Fac Engn, Thammasat Sch Engn, Dept Civil Engn,Res Unit Sci & Innovat Technol Civ, Pathum Thani, Thailand

[4] Thammasat Univ, Fac Engn, Ctr Excellence Electromagnet Energy Utilizat Engn, Thammasat Sch Engn,Dept Mech Engn, Pathum Thani, Thailand

[5] Thammasat Univ, Fac Engn, Thammasat Sch Engn, Dept Civil Engn,Res Unit Sci & Innovat Technol Civ, Pathum Thani 12120, Thailand

来源：

SHIPS AND OFFSHORE STRUCTURES | 2024年 / 19卷 / 07期

关键词：

Undrained bearing capacity factor; cutting edge; open caisson; FELA; offshore foundation; undrained cohesion; SOIL BENEATH; SINKING;

D O I：

10.1080/17445302.2023.2225952

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Circular open caissons are deep foundations sunk into the ground utilising the self-weight of cutting edge and steining as driving force along with the subsequent failure of soil in bearing. During the sinking of the caisson, the clay in contact with the cutting edge is subjected to undrained loading and the controlled sinking of the caisson can be achieved by evaluating the undrained bearing capacity of the cutting edge. In the study, the undrained bearing capacity factor (N) of the cutting edge for varying cutting angle (b), radius ratio of the caisson (r(i)/r(o)), full embedment of the caisson (d), removal of soil within the caisson (d'), and different roughness (& alpha;) conditions of the steining are evaluated using finite element limit analysis (FELA). The factors affecting the undrained stability of caisson considering all practical scenarios are addressed and presented as charts to be used in practice.

引用

页码：989 / 997

页数：9

共 39 条

[11] Scenario based seismic re-qualification of caisson supported major bridges - A case study of Saraighat Bridge [J].

Dammala, Pradeep Kumar ;

Bhattacharya, Subhamoy ;

Krishna, Adapa Murali ;

Kumar, Shiv Shankar ;

Dasgupta, Kaustubh .

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, 2017, 100 :270-275

[12] EXPERIMENTAL DETERMINATION OF SHAPE FACTORS AND BEARING CAPACITY FACTORS OF SAND [J].

DEBEER, EE .

GEOTECHNIQUE, 1970, 20 (04) :387-&

[13] Inclination prediction of a giant open caisson during the sinking process using various machine learning algorithms [J].

Dong, Xuechao ;

Guo, Mingwei ;

Wang, Shuilin .

OCEAN ENGINEERING, 2023, 269

[14] Reinforced concrete caissons for port structures in Spain [J].

Esteban Lefler, F. ;

Rey Romero, V. D. .

PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-MARITIME ENGINEERING, 2009, 162 (02) :73-81

[15] COMPUTATION OF BEARING CAPACITY FACTORS USING FINITE-ELEMENTS [J].

GRIFFITHS, DV .

GEOTECHNIQUE, 1982, 32 (03) :195-202

[16]

Hansen J.B., 1961, A General Formula for Bearing Capacity

[17]

IRC: 78, 2000, STANDARD SPECIFICATI

[18]

IS: 3955, 1965, IS3955

[19]

IS: 9527 Part 1, 1981, IS95271

[20] Analysis of Mechanism of Sand Gushing and Sudden Sinking of Ultra-large Deep-water Open Caisson in sand via Field and Model Tests [J].

Jiang, Bing-nan ;

Yu, Ting ;

Peng, Wen-ming ;

Zhang, Yin-bin ;

He, Shun-bin ;

Ma, Jian-lin .

APPLIED OCEAN RESEARCH, 2023, 130

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