桥面板是混凝土桥中“工作”条件最苛刻的部分 ,在使用期间进行修补的概率比其他部分要大得多。美国科罗拉多州州际高速公路的科罗拉多河桥 ,全长2 560ｍ ,上部结构为跨度 61～ 91ｍ的预应力混凝土连续箱形梁。按业主要求 ,在设计该桥时即应提出一套拆除旧有桥面板而重新浇筑桥 Bridge deck is the most “working” part of a concrete bridge and has a much greater probability of being repaired during use than any other part. The Colorado River Bridge on the Colorado interstate highway in the United States has a total length of 2 560 m and a superstructure of prestressed concrete continuous box girders spanning 61-91 m. According to the owner’s request, in the design of the bridge should be put forward a set of demolition of the old deck and re-pouring bridge