论文部分内容阅读
顶推法的构思来源于刚梁纵向拖拉法,它用千斤顶取代了传统的卷扬机滑车组,用板式滑动装置取代滚筒,这一取代使施工方法得到了发展和提高,从而改善了用滑车组卷扬机拖拉在启动时造成的冲动,板式滑动装置避免了滚筒支承线接触作用引起的应力集中。在箱梁顶推施工过程中,施工的工艺控制最为重要,它将直接影响桥梁的质量及安全。现针对这一问题,提出了顶推法施工的技术原理及方法,并对顶推施工的关键技术进行了探讨。
The push-push method is derived from the longitudinal drag method of a rigid beam, which replaces the conventional winch pulley block with a jack and replaces the rollers with a plate sliding device. This replacement has led to the development and improvement of the construction method, Drag the impulse caused at start-up, the plate slide to avoid the concentration of stress caused by the contact action of the roller support line. During the construction of the box girder, the construction process control is the most important, which will directly affect the quality and safety of the bridge. In response to this problem, this paper puts forward the technical principle and method of jacking construction, and discusses the key technologies of jacking construction.