（保定市建筑设计院有限公司， 保定 071000）

［摘要］某教育中心屋顶网架结构，由于建筑使用荷载的增加，使原网架承载力不满足要求，需进行加固改造。经过对三种加固方案的比较，采用增加一层网架片的方法对该网架结构进行了加固处理，并总结了网架加固设计与施工过程中应注意的问题，以为类似工程提供参考。

［关键词］网架； 网架加固； 网架设计； 网架施工

中图分类号： TU356 文献标识码： A文章编号：  1002-848X(2016)S1-0954-04

Space grid strengthening design and construction

Qin Zhiwei

（Baoding Institute of Architecture Design Co., Ltd., Baoding 071000, China）

Abstract: A roof grid structure of an education center needs to be reinforced, because of the increase in the building’s using load, and the capacity of the original grid structure does not meet the requirement. Through comparison of three kinds of schemes, the grid structure is reinforced by adding another layer of grid. The problems which should be paid attention to in the process of space grid strengthening design and construction were summarized，which provide a reference for similar engineering.

Keywords: space grid; space grid strengthening; space grid design; space grid construction