多筒基础平台自浮拖航系拖点位置试验分析
|
摘要
多筒基础平台是近年来在海洋工程中出现并得以迅速发展的一种新型结构形式.此种结构最大优势是便于安装,并能够自浮拖航运输,特别是在浅海区.为了研究不同的系拖点位置对结构拖航稳定性的影响,采用1∶20比例模型,通过模拟波浪作用,选取不同的系拖点位置进行试验,得到压力对比曲线及拖航力变化曲线.结果表明,系拖点的最佳位置是使拉力作用线通过或尽量接近结构浮心,而且要使拉力作用线与水平面夹角尽量小,这样可以最大程度上保证结构拖航的稳定性.
Multi-bucket foundation platform is a new pattern structure used in offshore projects.The structure is convenient for installation and towing,especially in shallow sea.In order to study the effect of different towing points on stability of the structure in towing,model experiment with a scale of 1∶20 was carried out.The contrasting curves of pressure and the curves of pull in towing were obtained through the experiment in which the impact of ocean waves were simulated and different towing points were selected.The results indicate that the best towing point is to make the action line of pull get across or be close to the buoyant center of the structure,and the angle between action line of pull and horizontal plane should be small.So the stability of the structure can be ensured furthest.
Multi-bucket foundation platform is a new pattern structure used in offshore projects.The structure is convenient for installation and towing,especially in shallow sea.In order to study the effect of different towing points on stability of the structure in towing,model experiment with a scale of 1∶20 was carried out.The contrasting curves of pressure and the curves of pull in towing were obtained through the experiment in which the impact of ocean waves were simulated and different towing points were selected.The results indicate that the best towing point is to make the action line of pull get across or be close to the buoyant center of the structure,and the angle between action line of pull and horizontal plane should be small.So the stability of the structure can be ensured furthest.
引文
[1]丁红岩,刘振勇,陈兴.吸力锚土塞在粉质粘土中形成的模型试验研究[J].岩土工程学报,2001,23(4):441-444.Ding Hongyan,Liu Zhenyong,Chen Xing.Model tests onsoil plug formation in suction anchor for silty clay[J].Chi-nese Journal ofGeotechnical Engineering,2001,23(4):441-444(in Chinese).
[2]丁红岩,王立国,杜杰.多筒吸力平台沉放调平模型试验[J].岩土力学,2004,25(3):386-390.Ding Hongyan,Wang Liguo,Du Jie.The model tests foradjustment of penetration of multi-bucket foundation platform[J].Rock and Soil Mechanics,2004,25(3):386-390(inChinese).
[3]徐继祖,王翎羽,陈星,等.从吸力锚到筒型基础平台[J].中国海上油气(工程),2002,14(1):1-5.Xu Jizu,Wang Lingyu,Chen Xing,et al.Developmentfrom suction anchors to bucket foundation platforms[J].China Offshore Oil and Gas(Engineering),2002,14(1):1-5(in Chinese).
[4]李玉成.波浪对海上建筑物的作用[M].北京:海洋出版社,1990.Li Yucheng.The Action of Wave on Structure on the Sea[M].Beijing:Ocean Press,1990(in Chinese).
[5]苏兴翘,胡云昌,李吉生,等.船舶与海洋构造物动力学[M].天津:天津大学出版社,1992.Su Xingqiao,Hu Yunchang,Li Jisheng,et al.Dynamics ofWatercrafts and Structures on the Sea[M].Tianjin:TianjinUniversity Press,1992(in Chinese).
[6]Ding Hongyan,Qi Lan,Xu Jizu.The bucket foundationplatforms installed in shallowand ice drifting area[J].Jour-nal ofCold Regions Engineering,2001,15(4):211-218.
[7]丁红岩,赵将勇,戎贤.多筒型基础平台结构基础单体刚度分析方法[J].地震工程与工程振动,2003,23(6):133-137.Ding Hongyan,Zhao Jiangyong,Rong Xian.Stiffness analy-sis method of single bucket for multi-bucket foundation plat-form[J].Earthquake Engineering and Engineering Vibra-tion,2003,23(6):133-137(in Chinese).
[8]丁红岩,张明,李铁,等.筒型基础系缆平台沉/拔过程侧摩阻力原型测试[J].天津大学学报,2003,36(1):53-57.Ding Hongyan,Zhang Ming,Li Tie,et al.Full scale testsof skin friction forces during penetration down/pull upprocesses of a bucket foundation dolphin platform[J].Jour-nal ofTianjin University,2003,36(1):53-57(in Chi-nese).
[9]丁红岩,张浦阳.海上吸力锚负压下沉渗流场的特性分析[J].海洋技术,2003,22(4):44-48.Ding Hongyan,Zhang Puyang.Suction penetration seepagefield′s characteristics of suction anchor[J].Ocean Technolo-gy,2003,22(4):44-48(in Chinese).
[2]丁红岩,王立国,杜杰.多筒吸力平台沉放调平模型试验[J].岩土力学,2004,25(3):386-390.Ding Hongyan,Wang Liguo,Du Jie.The model tests foradjustment of penetration of multi-bucket foundation platform[J].Rock and Soil Mechanics,2004,25(3):386-390(inChinese).
[3]徐继祖,王翎羽,陈星,等.从吸力锚到筒型基础平台[J].中国海上油气(工程),2002,14(1):1-5.Xu Jizu,Wang Lingyu,Chen Xing,et al.Developmentfrom suction anchors to bucket foundation platforms[J].China Offshore Oil and Gas(Engineering),2002,14(1):1-5(in Chinese).
[4]李玉成.波浪对海上建筑物的作用[M].北京:海洋出版社,1990.Li Yucheng.The Action of Wave on Structure on the Sea[M].Beijing:Ocean Press,1990(in Chinese).
[5]苏兴翘,胡云昌,李吉生,等.船舶与海洋构造物动力学[M].天津:天津大学出版社,1992.Su Xingqiao,Hu Yunchang,Li Jisheng,et al.Dynamics ofWatercrafts and Structures on the Sea[M].Tianjin:TianjinUniversity Press,1992(in Chinese).
[6]Ding Hongyan,Qi Lan,Xu Jizu.The bucket foundationplatforms installed in shallowand ice drifting area[J].Jour-nal ofCold Regions Engineering,2001,15(4):211-218.
[7]丁红岩,赵将勇,戎贤.多筒型基础平台结构基础单体刚度分析方法[J].地震工程与工程振动,2003,23(6):133-137.Ding Hongyan,Zhao Jiangyong,Rong Xian.Stiffness analy-sis method of single bucket for multi-bucket foundation plat-form[J].Earthquake Engineering and Engineering Vibra-tion,2003,23(6):133-137(in Chinese).
[8]丁红岩,张明,李铁,等.筒型基础系缆平台沉/拔过程侧摩阻力原型测试[J].天津大学学报,2003,36(1):53-57.Ding Hongyan,Zhang Ming,Li Tie,et al.Full scale testsof skin friction forces during penetration down/pull upprocesses of a bucket foundation dolphin platform[J].Jour-nal ofTianjin University,2003,36(1):53-57(in Chi-nese).
[9]丁红岩,张浦阳.海上吸力锚负压下沉渗流场的特性分析[J].海洋技术,2003,22(4):44-48.Ding Hongyan,Zhang Puyang.Suction penetration seepagefield′s characteristics of suction anchor[J].Ocean Technolo-gy,2003,22(4):44-48(in Chinese).
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心