施工期台风浪作用下沉箱碰撞破坏分析
|
摘要
以"莎莉嘉"台风引起施工期沉箱碰撞破坏为背景,研究台风浪作用下施工期沉箱碰撞破坏模式及机理。提出基于台风浪作用下沉箱碰撞反应分析两步走的数值模拟方法,该方法利用高精度流体模拟软件Flow-3D的造波技术模拟台风引起的波浪传播过程,并与沉箱结构作用获取沉箱波浪力时程曲线;建立沉箱精细化有限元模型,将上述波浪力时程曲线施加于沉箱结构,利用LS-DYNA显式求解器分析沉箱结构的碰撞反应。应用该方法对"莎莉嘉"台风引起施工期沉箱碰撞破坏进行分析,结果表明:数值模拟的沉箱结构在不同波浪方向作用下发生不同角度的碰撞会导致不同的沉箱碰撞破坏模式,波浪作用方向与沉箱前后壁夹角为60°时,沉箱碰撞破坏模式与"莎莉嘉"台风作用期间的现场情况吻合较好。
The studies and analysis of the pounding damage mode and the mechanism of the caisson during construction under the action of storm waves are carried out based on the pounding damage of the caisson during construction caused by the super typhoon Sarika. In this paper,a new method for the numerical analysis of a structural model is proposed,and is employed to analyze the pounding response of the caissons subjected to the storm wave loads. According to the new method,the simulation process is divided into two steps. In the first step,the wave propagation caused by the typhoon is simulated by the wave-generating tool of Flow-3 D,and the time history of the wave force on the caissons is also recorded at the same time. In the second step,a refined finite element model is developed in analyzing the pounding response of the caissons under the action of storm waves,and the wave force time-story curves are applied to the caissons according to the measured data in the first step for further analysis of the structural pounding response using the explicit solver of LSDYNA. The whole simulation of the pounding response of the caissons during construction caused by typhoon Sarika is carried out. The simulated and analysis results show that the different wave direction results in the angle of the caisson collisions,which will lead to different damage modes for the caissons. And when the angle between the wave action direction and the front/back walls of the caisson is 60°,the measured pounding damage mode is in a good agreement with the field situation caused by the typhon Sarika.
The studies and analysis of the pounding damage mode and the mechanism of the caisson during construction under the action of storm waves are carried out based on the pounding damage of the caisson during construction caused by the super typhoon Sarika. In this paper,a new method for the numerical analysis of a structural model is proposed,and is employed to analyze the pounding response of the caissons subjected to the storm wave loads. According to the new method,the simulation process is divided into two steps. In the first step,the wave propagation caused by the typhoon is simulated by the wave-generating tool of Flow-3 D,and the time history of the wave force on the caissons is also recorded at the same time. In the second step,a refined finite element model is developed in analyzing the pounding response of the caissons under the action of storm waves,and the wave force time-story curves are applied to the caissons according to the measured data in the first step for further analysis of the structural pounding response using the explicit solver of LSDYNA. The whole simulation of the pounding response of the caissons during construction caused by typhoon Sarika is carried out. The simulated and analysis results show that the different wave direction results in the angle of the caisson collisions,which will lead to different damage modes for the caissons. And when the angle between the wave action direction and the front/back walls of the caisson is 60°,the measured pounding damage mode is in a good agreement with the field situation caused by the typhon Sarika.
引文
[1]李玉成,滕斌.波浪对海上建筑物的作用[M].北京:海洋出版社,2002:121.(LI Yucheng,TENG Bin.Wave action on maritime structures[M].Beijing:China Ocean Press,2002:121.(in Chinese))
[2]TERRO M J,ABDEL-ROHMAN M,TERRO M J.Wave induced forces in offshore structures using linear and nonlinear forms of Morison's equation[J].Journal of Vibration and Control,2007,13(2):139-157.
[3]BAO W G,FUJIHASHI K,KINOSHITA T.Interaction of a submerged elliptic plate with waves[J].Journal of Hydrodynamics,2010,22(5):77-82.
[4]李忠献,黄信.地震和波浪联合作用下深水桥梁的动力响应[J].土木工程学报,2012,45(11):134-140.(LI Zhongxian,HUANG Xin.Dynamic responses of bridges in deep water under combined earthquake and wave actions[J].China Civil Engineering Journal,2012,45(11):134-140.(in Chinese))
[5]JTS 145—2015港口与航道水文规范[S].(JTS 145—2015 Code of hydrology for harbor and waterway[S].(in Chinese))
[6]GUO Anxin,LI Zhongjun,LI Hui.Point-to-surface pounding of highway bridges with deck rotation subjected to bi-directional earthquake excitations[J].Journal of Earthquake Engineering,2011,15(2):274-302.
[7]BI K,HAO H.Numerical simulation of pounding damage to bridge structures under spatially varying ground motions[J].Engineering Structures,2013,46(1):62-76.
[8]丁阳,汪明,李忠献.爆炸荷载作用下钢框架结构连续倒塌分析[J].建筑结构学报,2012,33(2):78-84.(DING Yang,WANG Ming,LI Zhongxian.Numerical analysis of damage and collapse process of steel frame structures under blast loads[J].Journal of Building Structures,2012,33(2):78-84.(in Chinese))
[9]Livermore Software Technology Corporation.LS-DYNA user manual[Z].2007.
[10]方钟圣,金承仪.日本浮标站台风浪波高与风速等参数的统计分析[J].船舶力学,2003,7(5):1-10.(FANG Zhongsheng,JIN Chengyi.Statistical analysis of wave height,wind speed and other parameters due to tropical cyclones in the Northwest Pacific area[J].Journal of Ship Mechanics,2003,7(5):1-10.(in Chinese))
[11]张婷.波浪的三维数值模拟及其应用[D].天津:天津大学,2009.(ZHANG Ting.Three-dimensional numerical simulation of waves and its application[D].Tianjin:Tianjin University,2009.(in Chinese))
[12]师燕超,李忠献,郝洪.爆炸荷载作用下钢筋混凝土框架结构的连续倒塌分析[J].解放军理工大学学报(自然科学版),2007,8(6):652-658.(SHI Yanchao,LI Zhongxian,HAO Hong.Numerical analysis of progressive collapse of reinforced concrete frame under blast loading[J].Journal of PLA University of Science and Technology,2007,8(6):652-658.(in Chinese))
[13]MALVAR L J,ROSS C A.A review of strain rate effects for concrete intension[J].Aci Materials Journal,1998,95(6):735-739.
[14]BISCHOFF P H,PERRY S H.Compressive behavour of concrete at high strain rates[J].Materials and Structures,1991,24(6):425-450.
[15]师燕超.爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D].天津:天津大学,2009.(SHI Yanchao.Dynamic response and damage mechanism of reinforced concrete structures under blast loading[D].Tianjin:Tianjin University,2009.(in Chinese))
[16]MALVAR L J.Review of static and dynamic properties of steel reinforcing bars[J].Aci Materials Journal,1998,95(5):609-616.
[17]JTS 167-2—2009重力式码头设计与施工规范[S].(JTS 167-2—2009 Design and construction code for gravity quay[S].(in Chinese))
[18]BI K,HAO H.Numerical simulation of pounding damage to bridge structures under spatially varying ground motions[J].Engineering Structures,2013,46(1):62-76.
[2]TERRO M J,ABDEL-ROHMAN M,TERRO M J.Wave induced forces in offshore structures using linear and nonlinear forms of Morison's equation[J].Journal of Vibration and Control,2007,13(2):139-157.
[3]BAO W G,FUJIHASHI K,KINOSHITA T.Interaction of a submerged elliptic plate with waves[J].Journal of Hydrodynamics,2010,22(5):77-82.
[4]李忠献,黄信.地震和波浪联合作用下深水桥梁的动力响应[J].土木工程学报,2012,45(11):134-140.(LI Zhongxian,HUANG Xin.Dynamic responses of bridges in deep water under combined earthquake and wave actions[J].China Civil Engineering Journal,2012,45(11):134-140.(in Chinese))
[5]JTS 145—2015港口与航道水文规范[S].(JTS 145—2015 Code of hydrology for harbor and waterway[S].(in Chinese))
[6]GUO Anxin,LI Zhongjun,LI Hui.Point-to-surface pounding of highway bridges with deck rotation subjected to bi-directional earthquake excitations[J].Journal of Earthquake Engineering,2011,15(2):274-302.
[7]BI K,HAO H.Numerical simulation of pounding damage to bridge structures under spatially varying ground motions[J].Engineering Structures,2013,46(1):62-76.
[8]丁阳,汪明,李忠献.爆炸荷载作用下钢框架结构连续倒塌分析[J].建筑结构学报,2012,33(2):78-84.(DING Yang,WANG Ming,LI Zhongxian.Numerical analysis of damage and collapse process of steel frame structures under blast loads[J].Journal of Building Structures,2012,33(2):78-84.(in Chinese))
[9]Livermore Software Technology Corporation.LS-DYNA user manual[Z].2007.
[10]方钟圣,金承仪.日本浮标站台风浪波高与风速等参数的统计分析[J].船舶力学,2003,7(5):1-10.(FANG Zhongsheng,JIN Chengyi.Statistical analysis of wave height,wind speed and other parameters due to tropical cyclones in the Northwest Pacific area[J].Journal of Ship Mechanics,2003,7(5):1-10.(in Chinese))
[11]张婷.波浪的三维数值模拟及其应用[D].天津:天津大学,2009.(ZHANG Ting.Three-dimensional numerical simulation of waves and its application[D].Tianjin:Tianjin University,2009.(in Chinese))
[12]师燕超,李忠献,郝洪.爆炸荷载作用下钢筋混凝土框架结构的连续倒塌分析[J].解放军理工大学学报(自然科学版),2007,8(6):652-658.(SHI Yanchao,LI Zhongxian,HAO Hong.Numerical analysis of progressive collapse of reinforced concrete frame under blast loading[J].Journal of PLA University of Science and Technology,2007,8(6):652-658.(in Chinese))
[13]MALVAR L J,ROSS C A.A review of strain rate effects for concrete intension[J].Aci Materials Journal,1998,95(6):735-739.
[14]BISCHOFF P H,PERRY S H.Compressive behavour of concrete at high strain rates[J].Materials and Structures,1991,24(6):425-450.
[15]师燕超.爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D].天津:天津大学,2009.(SHI Yanchao.Dynamic response and damage mechanism of reinforced concrete structures under blast loading[D].Tianjin:Tianjin University,2009.(in Chinese))
[16]MALVAR L J.Review of static and dynamic properties of steel reinforcing bars[J].Aci Materials Journal,1998,95(5):609-616.
[17]JTS 167-2—2009重力式码头设计与施工规范[S].(JTS 167-2—2009 Design and construction code for gravity quay[S].(in Chinese))
[18]BI K,HAO H.Numerical simulation of pounding damage to bridge structures under spatially varying ground motions[J].Engineering Structures,2013,46(1):62-76.