后张法预应力混凝土简支梁（铰接空心板）单片梁计算分析.rar

计算项目：后张法预应力混凝土简支梁（铰接空心板）单片梁分析

一、资料

目的：DrBridge和Midas的对比计算，熟悉Midas的桥梁计算过程。
结构：跨度20m，正交，计算跨度19.30m。横桥向7.7m，两车道，汽-20，无人行。
横向分布系数已经算出，取单片梁分析。本文只考虑中板。
要求：自重+预应力+二恒+活载，正截面使用应力与强度检算。
说明：只对中板进行单片梁分析，并与桥博结果对比。横向分布系数由桥博算出。关于在桥博中的建模和计算，不详细介绍，只列结果。
 不考虑收缩徐变及其引起的损失。关于收缩徐变和预应力损失的问题以后会专门讨论。本次只是为了熟悉midas的基本计算。

二、Midas建模计算

1、建立截面
首先在AutoCad中画出截面图形和结构图，钢束图。
Computing project: post-tensioned prestressed concrete beams (articulated hollow) single beam analysis

First, data

Objective: DrBridge and Midas the comparative calculations, familiar with the Midas bridge calculation.
Structure: The span of 20m, orthogonal, computing span 19.30m. Transverse to 7.7m, two-lane, steam -20, no line.
Transverse distribution coefficient has been calculated, taking single beam analysis. This article only considers the board.
Requirements: weight + prestress + 2 Constant + live load, stress and intensity of cross section using the calculation of.
Note: only single beam in the plate analysis, and the results compared with the bridge Bo. Bo lateral distribution factors calculated by the bridge. Bo on the bridge in the modeling and calculation, not detailed, only the results column.
 Without regard to shrinkage and creep and resulting losses. Shrinkage and creep and prestressing on the issue of the loss will be devoted to the future. The only to know the basic calculation of midas.

Second, Midas modeling calculation

1, the establishment of cross-section
AutoCad in the first section of graphics and charts to draw the steel beam map.