机构地区: 华南理工大学土木与交通学院
出 处: 《华南理工大学学报(自然科学版)》 1999年第11期104-107,共4页
摘 要: 某预应力混凝土立交匝道桥在施工尚未完成时,在圆形墩柱柱身出现肉眼可见的环状裂缝,部分裂缝宽度在1mm以上,柱顶附近已局部破坏.本文对此匝道桥进行了计算,分析了事故的原因. The ramp is a prestressed concrete bridge. During the construction of the ramp, visibleannular cracks horizontally appear in the trunk of the circular piers. Some of the cracks expandedto about half of the circumference. The maximum crack width is more than 1 mm. The concretenear the top of the piers has been locally damaged. This paper studies the causes of the failure.Analysis is performed to simulate the construction process and reasons for the failure arediscussed.