【摘要】 大跨度预应力混凝土连续刚构桥底板出现开裂是该类桥梁出现的问题之一,其影响因素较多。以一座实桥为例,利用有限元方法进行分析,结合工程实践对开裂产生原因进行了分析。根据大跨度预应力混凝土连续刚构桥的特点,提出了一些防治措施,供实际工程参考。更多还原

【Abstract】 It is one of the defects that cracks occur in the bottom slab of an extra-long prestressed concrete continuous rigid frame bridge.There are many influence factors.By way of example of a bridge,the causes of cracks are analyzed by means of finite element method and in the light of construction conditions.And some measures to treat the existing cracks are made according to the features of the extra-long prestressed concrete continuous rigid frame bridge,which are expected to serve as reference to the practical application.更多还原