大型交叉施工具有建筑结构复杂、设备集中、人员密度大、环境密闭等特点，一旦结构发生安全事故，后果严重，而风险识别和评估可以结合施工的实际情况，对其中的各种危险源进行分类，并进行定量与定性评价。文章从风险特点及类型、风险分析依据及步骤、风险评估流程，最后得出风险识别与评估结论：工程项目风险识别与评估应是一个经常性反复循环的活动，是一个动态的过程。%The large cross construction has the characteristics of complex building structures, concentration equipment, personnel density, environmental seal, once the structure takes place safety accidents, consequences is serious, the actual situation and risk identification and assessment can be combined with the construction, and it can classify all kinds of dangerous source, and make a quantitative evaluation. The article from the risk characteristics and types, risk analysis basis and steps, risk assessment process, finally obtains the risk identification and assessment conclusion:risk identification and assessment of the project should be a regular cyclic activity and a dynamic process.
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