论文部分内容阅读
真空压浆工艺属后张法预应力施工中一门新兴技术。说明其主要原理是在预应力管道一端用真空泵抽真空,造成管内-0.1MPa的真空度,另一端用压浆机压进优化的水泥浆体,并加以0.7MPa的正压力,使管道压浆的饱满度和密实度更加高。文中介绍汕头金凤大桥主桥施工中的真空压浆技术。
Vacuum grouting process is post-tensioned prestressed construction of a new technology. The main principle is that one end of the prestressed pipe is vacuumized by a vacuum pump to cause a vacuum of -0.1 MPa in the pipe and the other end is pressed into the optimized cement paste by a press machine and a positive pressure of 0.7 MPa is applied to make the pipe grout Fullness and density even higher. This article describes the Shantou Jinfeng Bridge vacuum grouting technology in the main bridge construction.