内河桥梁船撞损伤影响因素及影响规律数值模拟分析
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摘要
针对水运工程迅猛发展,内河桥梁受船舶撞击威胁日益增大的背景,为分析内河桥梁受船舶撞击的作用规律,拟借助LS-DYNA三维有限元计算软件,以润扬长江大桥为研究实例,撞击船舶选择最不利船舶(3 000 t级),建立三维数值模型,从桥墩混凝土强度、配筋率、船舶行驶速度等方面分析主要影响因子对桥墩撞击的具体作用规律。
Under the background that water transport engineering develops rapidly and inland river bridges are seriously threatened by ship collision,the article studies the characteristics of inland river bridges being collided by ships. The article built three-dimensional numerical model on the example of Runyang Yangtze River Bridge,by making use of three-dimensional finite element computational software LS-DYNA and setting the most unfavorable ship( 3 000 tons) as the colliding ship. The article then analyzes the influences of concrete strength of bridge piers,reinforcement ratio,ship speed and other factors on the ship collision on bridge piers.
Under the background that water transport engineering develops rapidly and inland river bridges are seriously threatened by ship collision,the article studies the characteristics of inland river bridges being collided by ships. The article built three-dimensional numerical model on the example of Runyang Yangtze River Bridge,by making use of three-dimensional finite element computational software LS-DYNA and setting the most unfavorable ship( 3 000 tons) as the colliding ship. The article then analyzes the influences of concrete strength of bridge piers,reinforcement ratio,ship speed and other factors on the ship collision on bridge piers.
引文
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[2]杨渡军.桥梁的防撞保护系统及其设计[M].北京:人民交通出版社,1990.
[3]余葵.重庆万州长江公路大桥防撞设施整体水工模型试验研究报告[R].重庆:重庆西南水运工程科学研究所,2012.
[4]MINORSKY V U.An analysis of ship collision to protection of nuclear powered plant[J].J Ship Research,1959(1):1-4.
[5]LENSELINK H,THUNG K G,VANDER,et al.Numerical simulations of ship collsions[C]//Proceedings of 20d International Offshore and Polar Engineering Conference.San Francisco,USA,1992,(11):79-88.
[6]唐友刚,陶海成,王榕,等.系泊油轮与海上平台的碰撞力分析[J].中国舰船研究,2012,7(4):36-40.
[7]DERUCHER K N.Proposed AASHTO Standards for the Design of Bridge Protective Systems[J].Civil Engineering for Practicing and Design Engineering,1982,1(2):131-145.
[8]嵇春艳,智广信,侯家怡.船舶碰撞下半潜式海洋平台耦合动力响应分析方法研究[J].江苏科技大学学报(自然科学版),2014(6):518-523.
[9]刘昆,包杰,王自力,等.自升式平台直管结构碰撞模型试验与仿真分析[J].舰船科学技术,2015(S1):107-113.
[10]中华人民共和国交通部.公路桥涵设计通用规范(JT-GD6O-2004)[S].
[11]孙霁.桥梁设计船撞设施数值模拟分析[D].上海:同济大学,2005.
[12]孙钦东,唐怀平.重力式桥墩与船舶斜向碰撞过程数值仿真[J].重庆理工大学学报(自然科学),2018(7):67-71.
[13]余葵,储雪权,陶超,等.拱形自浮式水上升降防撞装置结构形式比选[J].科学技术与工程,2017,17(13):66-69.