活性粉末混凝土桥梁应用与研究

Application and Study of Reactive Powder Concrete to Bridge Engineering

活性粉末混凝土(RPC)是一种超高抗压强度和超高性能的新型水泥基复合材料,已在世界桥梁工程中得到一定的应用,介绍已修建的RPC桥梁和已开展的试设计研究现状。目前的应用与研究分析表明:RPC在桥梁中的应用以拱桥和梁桥为主;截面形式以箱形截面为主;施工方法主要采用体内或体外预应力索进行预制拼装;接缝形式以湿接缝为主。预计在将来相当长的时间内,RPC将仍以上述的桥型、截面形式和施工方法继续发展。

The reactive powder concrete （RPC） is a new type of cement-based composite ma- terial with very high compressive strength and very high performance, which has been used in some bridges worldwide. The existing RPC bridges and the status quo of the trial design study conducted are introduced herein. The present application and study of RPC demonstrate that RPC are mainly used for arch bridges and beam bridges, and mainly in form of box section; the main construction method primarily adopted is the precasting and assembling with inner prestressing