新型海洋平台组合结构-钢管连接节点轴压性能研究
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摘要
不锈钢管中管钢管混凝土海洋组合平台是一种新型海洋平台组合结构形式,平台上下组块的连接节点既是结构设计的重点也是施工组装的关键,为保证该平台上下组块连接的可靠性,在JZ20-2北高点井口平台的基础上,提出了2种新型节点形式:过渡件连接和隔板加劲肋连接.基于有限元软件ABAQUS对2种节点形式进行足尺建模分析,着重探讨其在轴压条件下的受力性能.通过研究隔板厚度,加劲肋个数、厚度、高度等因素对隔板加劲肋式节点极限承载能力的影响进行了节点优化.结果表明:过渡件和隔板加劲肋式不锈钢管中管钢管混凝土-钢管连接节点均能够满足海洋平台承载能力的要求,且较于传统纯钢空心钢管连接拥有较高的承载力和良好的延性,其中增加隔板厚度、提升加劲肋个数和厚度可以有效提高隔板加劲肋式节点的极限承载能力.
Stainless steel-concrete-steel tube composite offshore platform is a new structure form of offshore platforms.The joint connection between upper desk and lower blocks is not only the key point of structure design but also the emphasis of construction installation.In order to increase the joint connection reliability based on JZ20-2 offshore platform,we designed two new types of joints:transitional connector joint and stiffened bearing plate joint.According to full-scale finite simulation based on ABAQUS,the mechanical properties and stress mechanism under axial compression condition of these two new joints are especially studied.We made some geometry optimization to the stiffened bearing plate joint by analyzing the thickness influence of bearing plate,the number,thickness and height influence of stiffeners to the ultimate capacity.The results show that,transitional connector and stiffened bearing plate joint can well satisfy the capacity design requirements of offshore platform,and the two new forms of joints have superior bearing capacity and better ductility than traditional pure steel joint.Further,increasing the thickness of bearing plate and increasing the number and thickness of stiffeners can effectively improve the ultimate capacity of the joint.
Stainless steel-concrete-steel tube composite offshore platform is a new structure form of offshore platforms.The joint connection between upper desk and lower blocks is not only the key point of structure design but also the emphasis of construction installation.In order to increase the joint connection reliability based on JZ20-2 offshore platform,we designed two new types of joints:transitional connector joint and stiffened bearing plate joint.According to full-scale finite simulation based on ABAQUS,the mechanical properties and stress mechanism under axial compression condition of these two new joints are especially studied.We made some geometry optimization to the stiffened bearing plate joint by analyzing the thickness influence of bearing plate,the number,thickness and height influence of stiffeners to the ultimate capacity.The results show that,transitional connector and stiffened bearing plate joint can well satisfy the capacity design requirements of offshore platform,and the two new forms of joints have superior bearing capacity and better ductility than traditional pure steel joint.Further,increasing the thickness of bearing plate and increasing the number and thickness of stiffeners can effectively improve the ultimate capacity of the joint.
引文
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[11]张纪刚,牛群.基于自复位摇摆柱的海洋平台摇摆结构抗振性能研究[J].青岛理工大学学报,2015,36(1):1-8.ZHANG Ji-gang,NIU Qun.Research on seismic performance of offshore platform based on self-recentering rocking column[J].Journal of Qingdao Technological University,2015,36(1):1-8.(in Chinese)
[12]张纪刚,王剑阁,韩永力.用于海洋平台结构的钢管混凝土摇摆柱构造性能试验研究[J].北京工业大学学报,2015,41(7):1028-1034,1042.ZHANG Ji-gang,WANG Jian-ge,HAN Yong-li.Experimental research of CFST rocking columns used in offshore platform[J].Journal of Beijing University of Technology,2015,41(7):1028-1034,1042.(in Chinese)
[13]DL/T 5085-1999,钢-混凝土组合结构设计规程[S].北京:中国电力出版社,1999.DL/T 5085-1999,Code for design of steel-concrete composite structure[S].Beijing:China Electric Power Press,1999.(in Chinese)
[14]庄茁.ABAQUS/Standard有限元软件入门指南[M].北京:清华大学出版社,1999.ZHUANG Zhuo.Guide of finite element software ABAQUS/Standard[M].Beijing:Tsinghua University Press,1999.(in Chinese)
[15]曹明.ABAQUS损伤塑性模型损伤因子计算方法研究[J].交通标准化,2012(2):51-54.CAO Ming.Research on damage plastic calculation method of ABAQUS concrete damaged plasticity model[J].Communications Standardization,2012(2):51-54.(in Chinese)
[16]RASMUSSEN K J R.Full-range stress-strain in curves for stainless steel alloys[J].Journal of Constructional Steel Rearch,2003,59(1):47-61.
[17]TAO Z,UY B,LIAO F Y,et al.Nonlinear analysis of concrete-filled square stainless steel stub columns under axial compression[J].Journal of Constructional Steel Research,2011,67(11):1719-1732.
[18]韩林海.钢管混凝土结构:理论与实践[M].2版.北京:科学出版,2007.HAN Lin-hai.Concrete filled steel tubular structures from theory to practice[M].2nd ed.Beijing:Science Press,2007.(in Chinese)
[19]黄宏,郭晓宇.圆中空夹层钢管混凝土压扭构件的有限元分析[J].建筑结构学报,2013,34(S1):332-338.HUANG Hong,GUO Xiao-yu.Theoretical research on concrete filled double-skin steel tubular members subjected to compression and torsion[J].Journal of Building Structures,2013,34(S1):332-338.(in Chinese)
[20]廖飞宇.圆不锈钢管混凝土轴压力学性能的有限元分析[J].福建农林大学学报(自然科学版),2009,38(6):659-662.LIAO Fei-yu.Finite element analysis for circular concrete-filled stainless steel tubular column under axial compression[J].Journal of Fujian Agriculture and Forestry University(Natural Science Edition),2009,38(6):659-662.(in Chinese)
[2]张纪刚,孙海超,刘菲菲.新型海洋平台三种抗振措施性能对比分析[J].防灾减灾工程学报,2017,37(5):802-808.ZHANG Ji-gang,SUN Hai-chao,LIU Fei-fei.The comparative analysis of three novel offshore platform's anti-vibration performance[J].Journal of Disaster Prevention and Mitigation Engineering,2017,37(5):802-808.(in Chinese)
[3]陈以一,陈扬骥.圆钢管空间相贯节点的实验研究[J].土木工程学报,2003(8):24-30.CHEN Yi-yi,CHEN Yang-ji.Experimental research on multi-planar joint of steel tubular members[J].China Civil Engineering Journal,2003(8):24-30.(in Chinese)
[4]郭彦林.K型方、圆管相贯节点的极限承载力非线性有限元分析[J].建筑科学,2001(2):50-53.GUO Yan-lin.Nonlinear finite element analysis of ultimate strength on tubular K-joints:Square chords and circular braces[J].Building Science.,2001(2):50-53.(in Chinese)
[5]舒宣武,朱庆科.空间KK型钢管相贯节点极限承载力有限元分析[J].华南理工大学学报(自然科学版),2002(10):102-106.SHU Xuan-wu,ZHU Qing-ke.Ultimate bearing capacity analysis of circular tubular KK joints by finite element method[J].Journal of South China University of Technology(Natural Science Edition),2002(10):102-106.(in Chinese)
[6]温宇平,王清湘.钢骨-钢管混凝土组合重载柱节点抗震性能试验研究[J].工业建筑,2008,38(3):20-22,8.WEN Yu-ping,WANG Qing-xiang.Experiment research on aseismatic behavior of joints of heavy-load steel tube columns filled with steel-reinforced concrete[J].Industrial Construction,2008,38(3):20-22,8.(in Chinese)
[7]温宇平,王清湘.钢骨-钢管混凝土组合重载柱节点的有限元分析[J].四川建筑科学研究,2008(2):5-6,17.WEN Yu-ping,WANG Qing-xiang.Finite element analysis for joints of heavy-load steel tube columns filled with steel-reinforced concrete[J].Sichuan Building Science,2008(2):5-6,17.(in Chinese)
[8]许斌,李知.预应力混凝土-钢组合塔架连接段应力模拟分析[J].应用力学学报,2015,32(6):999-1005,1103.XU Bin,LI Zhi.Stress simulation analysis of connections for prestressed concrete-steel hybrid wind turbine tower[J].Chinese Journal of Applied Mechanic,2015,32(6):999-1005,1103.(in Chinese)
[9]许斌,谢咏剑.预应力混凝土-钢组合风电塔架穿筋连接段弹塑性分析[J].可再生能源,2015,33(7):1033-1041.XU Bin,XIE Yong-jian.Elastic-plastic analysis of reinforced connection for prestressed concrete-steel hybrid wind turbine tower[J].Renewable Energy Resource,2015,33(7):1033-1041.(in Chinese)
[10]许斌,李正超.组合风电塔架混凝土填充钢箱连接段数值模拟[J].机械设计与制造,2016(3):30-33.XU Bin,LI Zheng-chao.Numerical simulation on concrete-in filled steel box connection of hybrid wind turbine tower[J].Machinery Design and Manufacture,2016(3):30-33.(in Chinese)
[11]张纪刚,牛群.基于自复位摇摆柱的海洋平台摇摆结构抗振性能研究[J].青岛理工大学学报,2015,36(1):1-8.ZHANG Ji-gang,NIU Qun.Research on seismic performance of offshore platform based on self-recentering rocking column[J].Journal of Qingdao Technological University,2015,36(1):1-8.(in Chinese)
[12]张纪刚,王剑阁,韩永力.用于海洋平台结构的钢管混凝土摇摆柱构造性能试验研究[J].北京工业大学学报,2015,41(7):1028-1034,1042.ZHANG Ji-gang,WANG Jian-ge,HAN Yong-li.Experimental research of CFST rocking columns used in offshore platform[J].Journal of Beijing University of Technology,2015,41(7):1028-1034,1042.(in Chinese)
[13]DL/T 5085-1999,钢-混凝土组合结构设计规程[S].北京:中国电力出版社,1999.DL/T 5085-1999,Code for design of steel-concrete composite structure[S].Beijing:China Electric Power Press,1999.(in Chinese)
[14]庄茁.ABAQUS/Standard有限元软件入门指南[M].北京:清华大学出版社,1999.ZHUANG Zhuo.Guide of finite element software ABAQUS/Standard[M].Beijing:Tsinghua University Press,1999.(in Chinese)
[15]曹明.ABAQUS损伤塑性模型损伤因子计算方法研究[J].交通标准化,2012(2):51-54.CAO Ming.Research on damage plastic calculation method of ABAQUS concrete damaged plasticity model[J].Communications Standardization,2012(2):51-54.(in Chinese)
[16]RASMUSSEN K J R.Full-range stress-strain in curves for stainless steel alloys[J].Journal of Constructional Steel Rearch,2003,59(1):47-61.
[17]TAO Z,UY B,LIAO F Y,et al.Nonlinear analysis of concrete-filled square stainless steel stub columns under axial compression[J].Journal of Constructional Steel Research,2011,67(11):1719-1732.
[18]韩林海.钢管混凝土结构:理论与实践[M].2版.北京:科学出版,2007.HAN Lin-hai.Concrete filled steel tubular structures from theory to practice[M].2nd ed.Beijing:Science Press,2007.(in Chinese)
[19]黄宏,郭晓宇.圆中空夹层钢管混凝土压扭构件的有限元分析[J].建筑结构学报,2013,34(S1):332-338.HUANG Hong,GUO Xiao-yu.Theoretical research on concrete filled double-skin steel tubular members subjected to compression and torsion[J].Journal of Building Structures,2013,34(S1):332-338.(in Chinese)
[20]廖飞宇.圆不锈钢管混凝土轴压力学性能的有限元分析[J].福建农林大学学报(自然科学版),2009,38(6):659-662.LIAO Fei-yu.Finite element analysis for circular concrete-filled stainless steel tubular column under axial compression[J].Journal of Fujian Agriculture and Forestry University(Natural Science Edition),2009,38(6):659-662.(in Chinese)