桥梁技术状况评定虚拟仿真实验实践与探索

Practice of virtual simulation experiment of bridge technical condition assessment

利用Unity3d技术、WebGL技术、OpenGL技术和3D仿真技术,开展了基于桥梁工程病害阈值控制指标识别的桥梁技术状况评定虚拟仿真实验项目。应用桥梁技术状况评定虚拟仿真实验教学系统,开展覆盖“预习、实施、复习、考核”全过程的虚实结合仿真实验,既可较好解决单一实体实验由于受成本、安全风险和进度安排限制而致病害检测操作复习难、考核难,公路桥梁组成构件空间分布位置再现难、技术状况评定示教效果差等问题,还可增强学生在进入实体工程现场前对具体分部件在工程空间位置关系的感性认识,了解桥梁工程检测与技术状况评价的规范化操作流程,实现桥梁技术状况评定虚拟仿真实验实验项目的“完整、高效、绿色、环保”和考核对实验过程的全覆盖。

Using Unity3D,WebGL technology,OpenGL technology and 3D simulation technology,the project of virtual simulation experiment of bridge technical condition assessment was developed based on the identification of bridge engineering disease threshold control index.The virtual simulation experiment teaching system fully covers the whole process of preview,implementation,review and examination of the experiment,and realizes virtual and real combination.This system can solve the problem of difficulty in review and examination of disease detection operation caused by the limitation of cost,safety risk and schedule arrangement in single entity experiment.At the same time,the problems such as the difficulty in reproducing the spatial distribution position of the highway bridge components and the poor teaching effect in evaluating the technical condition are solved.In addition,the system can enhance the students’perceptual understanding of the relationship between the parts in the engineering space and the standardized operation process of bridge engineering inspection and technical condition evaluation before entering the real engineering site.The virtual simulation experimental system realizes the integrity,efficiency,green,environmental protection of the experimental project,and the examination of the whole experimental process.