钢桁架在砼结构加固工程中的一个应用

An Application of Steel Truss that used in Reinforcement Project of Concrete Structure

本文针对豫南地区某乡中心小学教学楼楼面砼大梁强度严重降低、并可能进一步降低的情况，给出了在基本不改变梁截面、不破坏已完工程且不影响后续工程及施工进度的钢桁架加固方案。

This article talks about the serious falling of the floor concrete big beams′ strength of the teaching building of some town′s central primary school,south part of Henan Province.Maybe the falling situation of the beams will get worse.The author here made a steel truss reinforcement scheme which under the basic programme of unchanging the beam section、undestroying the finished project 、unaffecting the continual project and construction progress.