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船舶撞击桥梁数值模拟作为近些年研究桥梁船撞问题的新兴手段,对桥梁结构的船撞设计和研究桥梁结构船撞破坏特点具有重要意义。数值模拟技术分为前处理模块、计算模块和后处理模块,其中计算模块最为核心。近10年来,国内、外多家高校和科研机构展开的桥梁船撞数值模拟主要为了得到撞击力时程,研究重点没有关注桥梁结构的损伤和破坏状态,采用的混凝土本构模型比较简单。目前的研究正在朝仿真模型精细化和模拟过程逼真化方向发展,因此今后还需在混凝土材料本构模型、钢筋模拟、桩土作用和试验检验等方面做进一步研究。
As a new method to study ship collision in bridge in recent years, numerical simulation of ship impact bridge is of great significance to the design of ship collision of bridge structure and research on the characteristics of ship collision and destruction of bridge structure. Numerical simulation technology is divided into pre-processing module, calculation module and post-processing module, of which the calculation module is the core. In the recent 10 years, numerical simulations of bridge ship crash at home and abroad are carried out by many universities and research institutes mainly in order to obtain the impact time history. The research focus is not concerned with the damage and failure state of the bridge structure. The concrete constitutive model adopted is relatively simple. The current research is moving towards the refinement of the simulation model and the realistic process of the simulation process. Therefore, further research on the constitutive model of concrete materials, the simulation of reinforced bars, the effect of pile-soil and the test and test are needed in the future.