(浙江省建筑设计研究院, 杭州 310006)

摘要: 既有建筑加固改造分析容易忽略建筑物已经建成这一特点。 为了研究既有建筑托梁拔柱加固改造工程的分析方法,分别按照新建建筑与既有建筑对某 14 层钢筋混凝土框架加固改造工程进行了施工模拟分析。 通过对比结构常用的施工模拟方法(一次加载、施工模拟一、施工模拟三)与全过程施工模拟的差异,探讨了现行托梁拔柱设计方法的不足,基于结构建造和后续改造相结合,提出了既有建筑托梁拔柱的全过程施工模拟设计方法,并通过与施工模拟三计算结果对比验证了该方法的必要性。 最后,进一步对比分析了采用增大截面法加固转换柱时,按照联合截面和整体截面进行计算的异同点,建议应按联合截面法进行计算,以考虑新旧截面的应变滞后效应。

关键词: 既有建筑; 托梁拔柱; 全过程施工模拟; 联合截面; 整体截面

中图分类号:TU375 文献标志码:A 文章编号:1002-848X(2022)15-0080-05

DOI:10. 19701 / j. jzjg. ZIAD2220

Full-process construction simulation analysis of existing building with column removing andbeam supporting

YANG Xuelin, ZHU Wenwei, ZHOU Haoyi, CHEN Jin

( Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China)

Abstract: It is easy to ignore the feature that the building has been completed in the analysis of reinforcement andrenovation of existing buildings. In order to study the analysis method of reinforcement and renovation project of existingbuilding with column removing and beam supporting, the construction simulation analysis of a 14-story reinforced concreteframe reinforcement and renovation project, regarded as a new building and an existing building respectively was carriedout. By comparing the differences between construction simulation methods commonly used for structures ( one-timeloading, construction simulation Ⅰ, construction simulation Ⅲ) and full-process construction simulation, the deficienciesof the current design method of column removing and beam supporting project were discussed. Based on the combination ofconstruction stage and renovation stage of structures, the full-process construction simulation design method of existingbuildings with column removing and beam supportingwas proposed, and the necessity of the method was verified bycomparing the calculation results of construction simulation Ⅲ. Finally, the similarities and differences of the resultscalculated by the combined section method and the whole section method column were compared and analyzed when theconversion column was strengthened by the method of increasing section. the combined section method was suggested to beused for the calculation to consider the strain hysteresis effect of the new-to-old sections of the transition column.

Keywords: existing building; column removing and beam supporting; full-process construction simulation; combinedsection; whole section

第一作者:杨学林,博士,教授级高级工程师,主要从事既有结构加固改造和复杂超限结构的研究,Email:yangxuelin@ ziad. cn。

[引用本文] 杨学林,祝文畏,周豪毅,等. 既有建筑托梁拔柱改造全过程施工模拟分析[ J] . 建筑结构,2022,52(15) :80-84, 141. YANG Xuelin, ZHU Wenwei, ZHOU Haoyi, et al. Full-process construction simulation analysis ofexisting building with column removing and beam supporting[ J] . Building Structure,2022,52(15) :80-84,141.