对日本国新泻县某过街天桥垮塌工程进行了介绍,给出各方所持意见。通过参与实体试验及理论计算,对此次工程事故的原因进行了分析。认为索-钢-混凝土组合结构,由于材料变形能力的差异,以及小规模(小尺寸)构件的制作质量不易保证,该类结构对外界干扰所引起的变形极为敏感。总结认为,小构件采用此种结构需慎重。 We introduced the collapse of a bridge overpass in Niigata Prefecture in Japan and gave opinions from all parties. Through the participation of physical experiment and theoretical calculation, the causes of the accident were analyzed. It is considered that the cable-steel-concrete composite structure is not easily guaranteed due to the difference of material deformation ability and the quality of the manufacture of small-scale (small size) components. Such structures are extremely sensitive to deformation caused by external interference. It is concluded that small structures using this structure need to be cautious.