根据对某钢结构厂房施工过程中发生倒塌事故的现场调查、取样检测及结构计算分析,结果表明,施工过程中未及时安装支撑及檩条等连接构件、柱底与基础间的预留空间过大且在二次浇注前未采取任何加固措施是导致该厂房发生整体倒塌的主要原因。对于大跨度轻钢结构厂房,遵守严格的施工顺序、做好保障整体稳定的预防措施,对施工安全至关重要。 According to the site investigation, sample inspection and structural calculation and analysis of the collapse accident occurred during the construction of a steel structure workshop, the results show that the connection members such as support and purlins are not installed in time and the reserved space between the bottom of the column and the foundation is too large And no reinforcement measures before secondary casting are the main reasons for the overall collapse of the plant. For large-span light steel structure plant, to comply with the strict construction sequence, do a good job in ensuring the overall stability of preventive measures, construction safety is essential.