66
DOI:10.7672/sgjs2016100066
施工技术
CONSTRUCTION TECHNOLOGY
2016年5月下第45卷第10期
屈曲约束支撑加固多层混凝土框架施工技术*
徐帅，高向字，，郭亚楠刘亚双尹学军，李信”（1.北京工业大学工程抗震与结构诊治北京市重点实验室，北京100124；
2.青岛科而泰环境控制有限公司，山东青岛266101；
3.河北华研卓筑加固工程集团有限公司，河北石家庄050024）
[摘要］届曲约束支撑（buckling-restrainedbraces，BRB）的施工工序对控制施工误差、实现设计意图有重要作用，且影响施工的难易程度。该文通过对直连式、外贴框架式和内嵌框架式等3种利用BRB加固既有混凝土框架加固连接方式的施工工序研究，讨论了合理的施工工序，以及因设计不当、工序不当和工艺不当而引发的施工问题，研究了减小安装误差、保证质量的措施。以某既有多层混凝土框架的加固工程为例，对直连式施工工序和做法进行讨论。
【关键词］屈曲约束支撑；施工；安装；减震；加固；混凝土框架
［中图分类号］TU398*.2
【文献标识码】A
［文章编号】1002-8498（2016）10-0066-03
InstallationTechniqueofBuckling-restrainedBracesApplyingin
Multi-story Concrete Frames Strengthening
Xu Shuai",Gao Xiangyu',Guo Ya'nan',Liu Yashuang',Yin Xuejun',Li Xin(1. The Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education,
Beijing University of Technology,Beijing100124,China; 2. Qingdao Create Enuironment Control Technology Co. ,Lid. ,Qingdao, Shandong 266101, China;3. Huayanzhuozha Reinforcement Engineering Group Co. ,Ltd. , Shjiazhuang,Hebei 050024, China)
Abstract: The construction procedure of buckling restrained braces plays a critical role on controlling construction error and realizing design idea, meanwhile influence the construction complexity. By studying the construction procedure of three connection methods to strengthen existing concrete frame with BRB, named direct-connection method, exterior-additional-framework method, and interior-additional framework method, the paper has discussed reasonable and scientific construction procedure, and construction problems caused by improper design, improper procedure and improper craft, and then studied the measures to decrease construction errors and ensure construction quality. By exemplifying a existing multi-story concrete frame strengthening project, the construction procedure and craft of direct connection method have been discussed.
Key words: buckling-restrained braces; construction; installation; seismic dissipation; strengthening; concreteframe
0
引言
利用屈曲约束支撑（buckling-restrainedbraces，
简称BRB）对既有钢筋混凝土框架结构进行加固口减少湿作业、缩短施工周期、提高结构抗震性态水平等。同时.作为位移相关型消能器，BRB的耗能能力与轴向变形密切相关，因而安装误差影响较
*“十二五"国家科技计划课题（2011BAJ08B03-4）
【作者简介］徐帅，硕士研究生，E-mail：774823453@qq-com[收稿日期］2015-10-24
大。合理的施工工序和工艺是控制安装误差的关键，对保证设计质量具有重要作用。
本文通过对消能部件安装工序、工艺等的梳理和归纳，从设计不当、工序不当、工艺不当和误差控制等几个方面对施工安装中存在的间题进行分析研究，提出相应对策。
BRB加固连接方式
BRB同既有框架的连接方式主要有3种：直连式[1]、外贴框架式[2]和内嵌框架式[3]。直连式是利