在役空间网格结构的安全监测与杆件变形指标研究  

RESEARCH ON SAFETY MONITORING OF IN-SERVICE SPATIAL GRID STRUCTURE AND MEMBER DEFORMATION INDEX

作　　者：刘宇飞[1,2] 樊健生[1] 魏晓晨[1] 刘晓刚 杨建平[3] LIU Yufei;FAN Jiansheng;WEI Xiaochen;LIU Xiaogang;YANG Jianping(Department of Civil Engineering,Tsinghua University,Beijing 100084,China;Structural Engineering Testing Center of Tsinghua University,Beijing 100084,China;Central Research Institute of Building and Construction Co.,Ltd.,MCC Group,Beijing 100088,China)

机构地区：[1]清华大学土木工程系,北京100084 [2]清华大学结构工程检测中心,北京100084 [3]中冶建筑研究总院有限公司,北京100088

出　　处：《工业建筑》2021年第5期16-21,36,共7页Industrial Construction

基　　金：北京市自然科学基金项目(8192023);国家自然科学基金项目(51725803)。

摘　　要：空间网格结构是城市公共建筑的主要结构形式之一,在市民公共生活或交通生命线中发挥着至关重要的作用,其安全保障具有重要的社会与工程意义。综述了在役空间网格结构安全保障的研究现状与工程技术,对现行标准规范GB/T 50621—2010《钢结构现场检测技术标准》等内容中针对既有空间网格结构检测监测的12项检查指标进行总结归纳;深入讨论频发的杆件弯曲变形缺损及其对结构安全产生的明显影响;通过介绍三维激光扫描、数字图像法多视角几何三维重建以及逆向工程技术在弯曲变形杆件的检出与定量测量中的应用,为杆件弯曲变形损伤的单次检测与长期监测提供新的思路。The spatial grid structure is one of the main structural forms of urban public buildings, which plays a vital role in the public life or transportation lifeline of citizens, and its safety guarantee has important social and engineering significance. The paper reviewed the research status and engineering technology of saftety assurance of in-service spatial grid structures, summarized the 12 inspection indicators for the testing and monitoring of existing spatial grid structures in technical standard for in-site testing of steel structure(GB/T 50621—2010), and an in-depth discussion of the frequently occurring bending deformation defect and its obvious impact on structural safety was conducted. Through the introduction of three-dimensional laser scanning, digital image method of multi-view geometric three-dimensional reconstruction, and applications of reverse engineering technique in the detection and quantitative measurement of bending deformation members, the new ideas for the testing and monitoring of bending deformation damage of the members were proposed.

关 键 词：在役空间网格结构 安全保障 检测 监测 杆件弯曲变形 

分 类 号：TU399[建筑科学—结构工程]