论文部分内容阅读
文章介绍桥梁后张预应力砼结构压浆的一种新方法——真空压浆,说明了真空压浆在提高预应力孔道灌浆的饱满度和密实度方面比普通压浆更具优越性,证明了采用真空压浆工艺是提高后张预应力砼结构安全度和耐久性的有效措施。同时介绍了一种更方便、直观的水泥浆膨胀率实验方法,以及真空压浆工艺在吉华跨线桥施工中的应用。
This paper introduces a new method of vacuum grouting of post-tensioned prestressed concrete structure of bridge, which shows that vacuum grouting is more superior than common grouting in enhancing the fullness and compactness of prestressed hole grouting. The use of vacuum grouting process is to improve post-tensioned prestressed concrete structure safety and durability of the effective measures. At the same time, a more convenient and intuitive experimental method for the expansion rate of cement slurry is introduced, and the application of vacuum grouting technology in the construction of Jihua overpass bridge is introduced.