桥梁调坡顶升关键技术之顶升支撑技术探讨

Discussion of Jacking Supporting Technique in Key Technologies of Adjusting and Jacking Bridge

随着我国经济建设的高速发展,对既有桥梁采用顶升的方法与拆除重建相比,是较为经济快捷的。桥梁调坡顶升是桥梁顶升的一个新领域。该文结合一连续箱梁的调坡顶升工程,对调坡顶升工程的关键技术之一的钢支撑系统的受力及稳定进行建模计算分析。在目前无顶升规范的前提下,希望通过该文的介绍,能够为调坡顶升工程的支撑计算提供参考作用,为桥梁顶升工艺的发展起到有益的推动作用。

With the rapid development of economic construction in China, the jacking method used for the existing bridges is more economic and efficient by comparing with the demolition and reconstruction methods.The adjusting jacking of bridge is the new field of bridge jacking. According to an adjusting and jacking project of continuous box beam, a model is set up to calculate and analyze the stress and stability of steel support system in the key technologies of adjusting and jacking project. Under the premise of no jacking specifications now, the introduction in this article can be referred for the support calculation of adjusting and jacking engineering, and can play the valuable promotion role in the development of bridge jacking technology.