[1]张 亮.某自升式平台生活模块底座螺栓断裂失效分析及加强结构[J].石油化工设备,2020,(06):74-79.[doi:10.3969/j.issn.1000-7466.2020.06.013]
 ZHANG Liang.Fracture Failure Analysis and Strengthening Structure of the Base Bolt of a Jack-up Life Module[J].Petro-Chemical Equipment,2020,(06):74-79.[doi:10.3969/j.issn.1000-7466.2020.06.013]
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某自升式平台生活模块底座螺栓断裂失效分析及加强结构()
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石油化工设备[ISSN:1000-7466/CN:62-1078/TQ]

卷:
期数:
2020年06期
页码:
74-79
栏目:
经验交流
出版日期:
2020-12-30

文章信息/Info

Title:
Fracture Failure Analysis and Strengthening Structure of the Base Bolt of a Jack-up Life Module
作者:
张 亮
中海油能源发展股份有限公司 工程技术分公司,天津 300452
Author(s):
ZHANG Liang
CNOOC Enter Tech-drilling & Production Co.,Tianjin 300452,China
关键词:
自升式平台生活模块底座螺栓断裂失效分析应力加强结构
Keywords:
jack-uplife modulebase boltfracturefailure analysisstressstrengthening struc- ture
分类号:
TQ050.2
DOI:
10.3969/j.issn.1000-7466.2020.06.013
文献标志码:
B
摘要:
某自升式平台生活模块底座螺栓在海上作业及坞内维修期间均出现断裂失效现象,断裂位置集中在槽钢两端。对初步分析认定的可能引起底座螺栓断裂的4种原因进行有限元直接计算,认为拖航时的横向作用力、纵向作用力引起螺栓受拉、受弯致使总应力超标,以及船艉原井口槽变形导致生活模块定位安装时槽钢前后两端的螺栓受力不均致使拉应力超标是导致底座螺栓断裂的2个直接原因。建议更换高强螺栓、增加螺栓数量,并且给出了3种生活模块底座螺栓加强结构。
Abstract:
Bolts fracture located at both ends of the channel steel of the life module base of a jack-up platform were found during its offshore operations and maintenance in the dock. Four possible causes for the fracture failure were recognized by preliminary analysis,and two of which were finally affirmed as direct reasons by a further finite element stress check calculation. As the calculation showed,the bolts suffered excessive stress functions under two operating conditions,of which one is the total stress composed of the lateral pulling force and the longitudinal bent force during towing,the other is the tensile stress resulting from the deformation of the original wellhead slot at ship tail and its consequence uneven force on the front and rear ends of the channel steel during the positioning and installation of the living module. Replacing high-strength bolts,adding bolt quantity and 3 types of bolt reinforcement structures are recommended for the base of the life module.

参考文献/References:

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更新日期/Last Update: 1900-01-01