先简支后结构连续梁桥施工顺序分析

后浇结构层与梁端湿接头浇筑先后顺序以及二次负弯矩预应力筋张拉先后顺序是先简支后结构连续体系桥梁施工的关键工序.通过实例计算分析后浇结构层与梁端湿接头浇筑的先后顺序;同时,利用实例建立有限元模型分析二次负弯矩预应力张拉的先后顺序.通过对比分析,对预应力砼先简支后结构连续梁桥的受力、施工进行初步的探讨,以期更好的为工程服务.

Study on Construction Orders of Simply Supported-Continuous System

The constructing procedure of the monolithic layer and the wet joints of the girders and the orders of straining the pre-stress force are the key orders of the simply supported-continuous system.The orders of the monolithic layer and the wet joints of the girders are studied with practical project,and a limited element model was established to analyse the order of the wet joints of the girders and straining pre-stress force to the structure.Through the contrasting analysis,an elementary discussion of mechanics and construction was made towards the pre-stress simply supported-continuous system with the hope to better serve the project.