一种桥梁防撞结构的设计与仿真分析

摘要

There are many types of bridge anti-collision structure. According to the relationship between this structure and bridge pier, it can be divided into two types including integrated type and separated type. Under the limited clear width of naviga-ble waterway conditions, it is reasonable and feasible to construct the separated anti-collision structure on both upstream and downstream sides of bridge piers. A kind of separated and rigid bridge anti-collision structure has been designed according to the field condition of a bridge. Through establishing a three-dimensional finite element simulation model, the force condition of ves-sel collision has been analyzed, and the conclusions could be used as references for design of similar bridge anti-collision struc-ture.%桥梁防撞结构有多种形式，按照其与桥墩的关系区分，可分为整体式与分离式防撞两种。通航净宽受限的情况下，在桥墩上下游侧设置分离式防撞结构是合理可行的。根据某桥现场情况，设计出一种分离式刚性防撞结构。通过建立三维有限元仿真计算模型，分析该结构受到船舶撞击时的受力状况，其结论可为同类桥梁防撞设计提供参考。