（苏州九城都市建筑设计有限公司， 苏州 215123）

［摘要］通过对柏庐高级中学2002年建成的食堂进行加固改造抗震设计，阐述了在荷载增加、局部加层、立面修改等常见改造内容和抗震设防烈度、抗震设防类别均提高的情况下，基础、柱、梁、板、楼梯、墙体和新增钢结构连接等加固方案的比选和设计。本工程加固方案的确定结合了现场实际情况，在不破坏原构件的情况下，尽可能降低施工难度和减少加固改造量；对加固前后的计算结果进行对比分析，结果表明本工程采用的加固方案是可行有效的。

［关键词］抗震鉴定； 锚杆静压桩； 加固改造； 轻钢屋面； 局部加层

中图分类号：TU746-3文献标识码：A文章编号：1002-848X(2019)21-0086-07

Seismic design of reinforcement and transformation of Bailu Senior High School

Zhong Jianmin

(Suzhou Nine Urban Architectural Design Co., Ltd.， Suzhou 215123， China)

Abstract:The seismic design of the reinforcement and transformation of the canteen built in Bailu Senior High School in 2002 was analyzed. Common transformation contents were introduced  including load increase, local story increase and elevation modification in the case of seismic fortification intensity and seismic fortification category increase. Comparison, selection and design of reinforcement schemes for foundation, column, beam, slab, staircase, wall and new steel structural connections were conducted. The determination of reinforcement scheme in this project was combined with the actual situation of the site, and  the construction difficulty and the amount of reinforcement and transformation were reduced as much as possible without damaging the original components. Comparing the calculation results before and after reinforcement, it shows that the reinforcement scheme adopted in this project is feasible and effective.

Keywords:seismic appraisal; anchor jacked pile; reinforcement and transformation; light-weight steel roof; local story increase

作者简介：钟建敏，硕士，正高级工程师，一级注册结构工程师，注册土木工程师（岩土），Email：82503755@qq.com。