基于四维时空模型的施工现场物理碰撞检测

Construction collision detection for site entities based on 4-D space-time model

为满足建筑施工现场安全及管理的需求,构建了施工现场及设施实体的四维时空模型,提出了施工现场物理碰撞检测的算法。该模型以已开发的四维建筑施工现场管理系统为基础,引入四维技术和建筑信息模型,采用边界描述法来准确描述场地设施的三维形体,借鉴层次包围盒的思想。该模型可实时动态地对场地设施之间、场地设施和主体时变结构之间可能发生的物理碰撞进行检测和分析,从而对施工现场进行合理规划和实时调整。

A 4-D space-time model and an improved construction collision detection algorithm were developed for site entities to improve construction safety management.The model uses the hierarchy bounding boxes algorithm and the 4-D technology and building information model（BIM）.The 4-D construction site layout management system accurately describes the 3-D shapes of site entities using the boundary representation（B-rep） method.The algorithm helps managers to dynamically analyze the construction process and avoid collisions between site entities and structural elements to improve the planning and deployment of site resources to meet the construction needs.