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Citation:
　Yazhou Zhu,Chengmeng Sun,Hongde Qin,et al.Study on the Design Method of the Jack-up’s X-Type Cantilever Allowable Load Nephogram[J].Journal of Marine Science and Application,2014,(3):315-320.[doi:10.1007/s11804-014-1262-x]
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Study on the Design Method of the Jack-up’s X-Type Cantilever Allowable Load Nephogram

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Title:
Study on the Design Method of the Jack-up’s X-Type Cantilever Allowable Load Nephogram
Author(s):
Yazhou Zhu;  Chengmeng Sun;  Hongde Qin;  Bin Jiang and Yansong Fan
Affilations:
Author(s):
Yazhou Zhu;  Chengmeng Sun;  Hongde Qin;  Bin Jiang and Yansong Fan
1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China 2.Offshore Engineering Equipment Research Institute, Bohai Equipment Manufacturing Co., Ltd., China National Petroleum Corporation (CNPC), Panjin 124010, China
Keywords:
jack-up;  cantilever expand;  cantilever allowable load nephogram;  drilling ability;  x-type cantilever
分类号:
-
DOI:
10.1007/s11804-014-1262-x
Abstract:
The extending of a cantilever and transverse moving of a drilling floor enable the jack-up to operate in several well positions after the Jack-up has pitched. The cantilever allowable load nephogram is the critical reference which can evaluate the jack-up’s drilling ability, design the cantilever structure and instruct a jack-up manager to make the operations safe. The intent of this paper is to explore the interrelationships between the cantilever position, drilling floor and the loads including wind force, the stand set-back weight etc., through analyzing the structure and load characteristics of the x-type cantilever and the simplified mechanics model with the restriction of the maximum moment capacity of the cantilever single side beam. Referring to several typical position designs load values, the cantilever allowable load nephogram is obtained by using the suitable interpolation method. The paper gives a method for cantilever allowable load design, which is proved reliable and effective by the calculation example.

References:

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Last Update: 2014-10-16