三滩黄河大桥0#块空间应力分析

Analysis of 3D Stress of Santan Yellow River Bridge's Zero Segment

本文对连续刚构桥箱梁在施工阶段各工况下0#决顶板、底板、腹板和横隔板作了空间应力分析,计算中计入了收缩、温度和时间效应的影响,对不同施工方法作了对比分析,从而获得施工过程次应力的准确分布规律,为0# 块优化设计积累了经验。

This paper makes a comprehensive analysis about the zero segment and the main contents are as follows： Analysis of 3D stress on the deck, web and bottom plate of the zero segment.Since shrinkage, temperature and time-dependent are considered during the calculation of 3D stress, this paper gets accurate secondary stress distribution pattern during the construction and provide a reliable foundation for optimal design of the segment.