摘要
为了探究船舶撞击作用下混凝土桥梁结构的损伤行为,本文以某连续梁桥为研究对象,建立了有限元模型,对船舶与桥梁墩身碰撞的动力学行为以及不同速度、混凝土等级和配筋率下的撞击响应和损伤模式进行了模拟分析,结果表明,船舶速度和混凝土强度等级是影响最大撞击力和结构位移的重要因素,撞击力随混凝土强度的提高呈线性增长,而结构位移则与配筋率和速度紧密相关,在为船舶撞击桥梁事件中的风险评估和防撞设计提供科学依据。
In order to explore the damage behavior of concrete bridge structure under ship impact,a finite element model was established based on a continuous beam bridge.The dynamic behavior of the collision between the ship and the bridge pier,as well as the impact response and damage mode under different speeds,concrete grades and reinforcement ratios were simulated and analyzed.The results show that the ship speed and concrete strength grade are important factors affecting the maximum impact force and structural displacement.The impact force increases linearly with the increase of concrete strength,while the structural displacement is closely related to the reinforcement ratio and speed.It provides a scientific basis for risk assessment and anti-collision design in ship collision bridge events.
作者
王开拓
韩雨
Wang Kaituo;Han Yu(Central&Southern China Municipal Engineering Design and Research Institute Co.,Ltd.,Wuhan,China)
出处
《科学技术创新》
2024年第21期139-142,共4页
Scientific and Technological Innovation
关键词
桥梁结构
船舶撞击
动力学模拟
撞击响应
结构损伤
bridge structure
ship collision
dynamic simulation
impact response
structural damage