PDF全文阅读

 

 

 

 

李国荣¹，刘玉芝²，衷   诚³

 

 

（1.杨凌职业技术学院 建筑工程学院，杨凌 712100；2.杨凌工业园区投资创业服务有限公司，杨凌 712100；3.中国电建集团成都勘测设计研究院有限公司，成都 611130)

摘要：为解决粉煤灰建筑壁板遭受外部冲击后三维重建准确性欠佳的问题，提出粉煤灰建筑壁板结构冲击荷载模拟分析方法。针对粉煤灰建筑壁板结构，从DXF文件中提取直线等组码数据以获取完整的几何数据，进而识别建筑构件，并结合相关规范及布局模式验证与调整识别结果，消除外部冲击对分析的影响。将DXF文件转换为点云数据后，针对冲击引发的噪声和异常点问题，通过粗分割和细分割结合的方式获取精准点云数据，并将其与构件识别结果一同输入Revit软件，通过连接墙体特征点完成冲击荷载模拟分析。结果表明:该技术能精准识别墙体几何信息及门窗参数；点云分割值迭代后达0.85；重建值低于模拟破坏值，避免了外部冲击不利影响。所提技术方法为粉煤灰建筑壁板结构安全评估提供了可靠依据。

关键词：粉煤灰壁板；冲击荷载；建筑构件；点云数据；点云分割

中图分类号：TP391

文献标志码：A

文章编号：1005-8249（2025）06-0158-06

DOI：10.19860/j.cnki.issn1005-8249.2025-06-026

 

 

LI Guorong¹,LIU Yuzhi²,ZHONG Cheng³

 

 

(1.Architectural Engineering Institute,Yangling Vocational & Technical College,Yangling 712100,China；

 

2.Yangling Industrial Park Investment and Entrepreneurship Service Co.,Ltd.,Yangling 712100,China；

 

3.PowerChina Chengdu Engineering Corporation Limited,Chengdu 611130,China)

 

Abstract：To solve the problem of poor accuracy in 3D reconstruction of fly ash building wall panels after external impact,a simulation analysis method for impact load of fly ash building wall panel structure is proposed.For the structure of fly ash building wall panels,extract group code data such as straight lines from DXF files to obtain complete geometric data,identify building components,and verify and adjust the identification results based on relevant specifications and layout patterns to eliminate the influence of external impacts on analysis.After converting the DXF file into point cloud data,precise point cloud data is obtained through a combination of coarse and fine segmentation to address the noise and outlier issues caused by impact.This data is then input into Revit software along with the component recognition results,and impact load simulation analysis is completed by connecting wall feature points.The results shows that this technology can accurately identify the geometric information of walls and the parameters of doors and windows;The value of point cloud segmentation reaches 0.85 after iteration;The reconstruction value is lower than the simulated damage value,avoiding the adverse effects of external shocks.The proposed technology method provides a reliable basis for the safety assessment of fly ash building wall panel structures.

 

Key words：fly ash wall panels;impact load;building components;point cloud data;point cloud segmentation

项目来源：杨凌职业技术学院 2023 年基金项目(ZK23-20)。

作者简介：李国荣(1984—)，男，硕士，副教授，研究方向:结构工程。

收稿日期：2025-07-15