基于BIM的混凝土裂缝病害动态可视化研究

Dynamic Visualization of Concrete Crack Disease Based on BIM

为解决桥梁检测中不断更新的裂缝信息能正确表达且可以在模型上直观展示的问题,结合BIM技术对某桥的检测信息进行处理,并建立了一套针对桥梁裂缝信息的编码规则,利用图片识别生成点云数据的方法将图片裂缝生成裂缝点,通过裂缝点引入Rhino软件开发了一种利用杂乱无章的点获取中心线的方法,以此得到图片裂缝线,利用检测的宽度对裂缝线进行控制使模型上的裂缝与现实裂缝相吻合,达到裂缝可视化的目的。对裂缝病害信息引入时间参数,实现裂缝在模型上的动态可视化,并对裂缝的扩展规律加以呈现,针对裂缝引入裂缝定性、定量判别标准判定裂缝等级,有利于后期桥梁运维系统的进一步发展。

In order to solve the problem that the updated crack information can be correctly expressed and can be visually displayed on the model, this paper combines BIM technology, and establishes a set of code rules for bridge crack information. It uses the image identification and point to generate cloud data, develops a method by using Rhino software, so as to obtain the picture crack line. The detection width of the crack line is ued to control the model cracks consistent with the real cracks, to achieve the purpose of crack visualization. Letter to crack disease, the time parameters are introduced to realize the dynamic visualization of cracks on the model, and present the extension law of cracks. The crack introduces qualitative and quantitative criteria for determining the crack classification, which is conducive to the further development of the bridge operation and maintenance system in the later stage.