（江苏省盐城市建筑设计研究院有限公司，盐城 224002）
［摘要］通过对某中学学生食堂的加层改造设计，分析了此类工程设计中遇到的难点。针对原结构体系不明确、层高超标的问题，分别采用新增防震缝、设钢筋网夹板墙的方法进行加固。还采用框剪结构的方案减小梁柱的加固工作量，用静载试验来提高设计单桩承载力、减少补桩。
［关键词］加层；改造；砖混结构；框架结构；框-剪结构；钢筋网夹板墙
Some technical problems in adding stories design of a middle school mess hallJi Weibing, Li Chenzhong (Yancheng Architecture Design & Research Institute Co., Ltd., Yancheng 224002, China)
Abstract:A story would be added on a mess hall in a middle school. The difficulties of the design include that the existent structural system is not clear, and the height of the story is over limit. The measures of setting seismic joint and adding bar-mat reinforcement cavity wall are adopted for the reinforcing and rebuilding. The amount of strengthened beams and columns is reduced by changing the structural system to the frameshear wall structure. The amount of added piles is reduced and the pile′s loading capacity is increased by doing the static loading test.
Keywords:adding stories; reconstruct; brick-concrete structure; frame structure; frame shear wall structure; bar-mat reinforcement cavity wall.
作者简介：嵇蔚冰，研究员级高级工程师，Email:jwb0608@163.com。