The Local Analysis In0#Block Of Partial Cable-Stayed Bridge

Partial cable-stayed bridge is a new kind of bridge structure that has developed in the latest two decades, its mechanical behavior is located between a beam bridge and a cable-stayed bridge, it has great competitive power at the span of100m～300m,and now this kind of bridge has been used widely.Partial cable-stayed bridge can be divided into different structural systems according to the ways how pylon,main beam and pier connect together each other,it generally part into tower-beam consolidation system, supporting system and rigid frame system, the partial cable-stayde bridge that belongs to rigid frame system is mainly researched in this article.This kind of bridge has big rigidity,its deflection of main beam is very small,it is very suitable to be built by the cantilever construction,but this kind of bridge has poor dynamic characteristics,the negative moment near the tower-beam consolidation position is very big,so the section near the0#block is usually very huge.The special structural shape and edge conditions of0#block lead to its complex3D stress condition,along with the construction going,its stress condition changes.The last stress condition of the0#block is contributed by the storaging in the whole construction which is very complex and has several system conversion.For these reasons,it is very significant to analyse0#block’s local stress in different construction steps.In this article the author mainly researches the local stress of the partial cable-stayde bridge that belongs to rigid system in order to Luzhou QianCao Yangtze River Bridge(Partial cable-stayed bridge) as the engineering background,the main idea includes:1、Contrast and summarize the different structure of the0#block among the partial cable-stayde, the traditional beam bridge and cable-stayed bridge;2、Make a beam mode to do static analysis of Luzhou QianCao Yangtze River Bridge with professional bridge finite element software which is called midas,then investigation the inner force and stress of the0#block in the construction process;3、Combine beam mode and solid mode to set up a complete mode of Luzhou QianCao Yangtze River Bridge with professional bridge finite element software which is called midas,then analyse the local stress of0#block,at last research its regularities of distribution.