预应力连续梁桥配筋估算与结构验算

Estimation of reinforcement and structural checking of prestressed continuous girder bridge

对某一工程实例来利用电算和手算结合的方法估计连续梁桥的预应力钢束数,并在配筋后进行了结构验算。首先,利用Midas/Civil建模添加相应约束与荷载;然后,进行结构内力组合得到相关数据;接着,参考现行规范公式借用Excel表格做出公式;然后,手算出需要的预应力钢筋束;最后,完成配筋并进行结构验算。

In this paper,an engineering example is given to illustrate how to estimate the number of prestressing tendons of continuous girder bridges by combining computer calculation with manual calculation,and the structural checking is carried out after reinforcement.Firstly,the Midas/Civil model is used to add the corresponding constraints and loads;then,the internal force of the structure is combined to obtain the relevantdata;then,the formula is made by using Excel table with reference to the existing normative formula;then,the required prestressing tendons are calculated by hand;finally,the reinforcement is completed and the structural checking is carried out.