大循环压浆技术在高速公路桥梁施工中的应用

Application of Large Circulation Grouting Technology in Expressway Bridge Construction

高速公路桥梁施工中预制箱梁是非常常用的一种预制构件形式,而孔道压浆技术的好坏直接影响到预制箱梁的寿命,预应力钢绞线作为预制箱梁的主要的受力筋,在施工过程中埋藏在梁体内部,生锈时难以察觉,从而导致预制箱梁存在质量隐患,给人们的生产生活带来严重威胁。传统的压浆方式存在种种弊端无法保证压浆的饱和度,造成预应力管道存在空隙,长时间预应力筋的锈蚀也在所难免。而大循环智能压浆在进行预制箱梁压浆的过程中能实时监测水胶比、实时测控灌浆压力、浆液流量并可进行远程控制,可大幅提高压浆效果,提高预制箱梁施工质量。

Prefabricated box girder in highway construction is a very common form of prefabricated components,and the quality of prefabricated box girder directly affects the life of prefabricated box girder.The prestressed steel girder is the main Reinforced tendons,buried in the construction process within the beam,rust is difficult to detect,resulting in the quality of prefabricated box girder hidden danger,to people's production and life a serious threat.The traditional grouting way there are all kinds of drawbacks can not guarantee the saturation of the grouting,resulting in the existence of prestressed pipeline gap,long time the corrosion of the prestressed tendons is also inevitable.The large-scale intelligent grouting in the process of prefabricated box girder grouting,real-time monitoring of watercement ratio,real-time monitoring of grouting pressure,slurry flow and can be remote control,can greatly improve the grouting effect,improve the quality of prefabricated box girder.