(中国建筑科学研究院建筑结构研究所， 北京 100013)

［摘要］结合理论分析与现场检测，将近年提出的“配筋钻孔法”用于推算既有钢筋混凝土结构中承重构件的实际内力，能较好满足建筑结构的安全鉴定、加固改造、事故分析等相关需求。为便于业内同行理解、应用、改进此方法，确保其实际应用时推算精度满足工程要求，以此进一步拓展现有混凝土结构检测鉴定范围（含预应力及温度荷载效应），基于已有研究和双向偏压混凝土框架柱实测数据，详述了配筋钻孔法推算柱截面实际内力的过程，分析了推算结果，并对以后类似研究和应用提出了实用建议。

［关键词］配筋钻孔法；  构件实际内力； 钢筋钻孔与扩孔； 测孔周边应变增量； 推算精度

中图分类号：TU375, TU378文献标识码：A文章编号：1002-848X(2019)03-0057-04

Example for calculating actual internal forces of  concrete members by Hole Method of Reinforcement

Pan Li

（Institute of Building Structures, China Academy of Building Research, Beijing 100013, China）

Abstract:Combined with the theoretical analysis and  the field test, Hole Method of Reinforcement which was proposed  in recent years can be used preferably to calculate actual internal forces in bearing members in existing reinforced concrete, which better meets the need of structural safety identification, reinforcement and reconstruction, and accident analysis etc. In order to help industry peers to understand, use  and  improve the method, to ensure calculation accuracy when the method is used to meet engineering requirements, so to further expand the existing range of concrete structure detection and identification (including effects from prestressing or temperature), based on the existing study and  known measured data of a reinforced concrete column loaded in two-way eccentric compression, the calculation process by the method for actual internal forces of the column was shown in detail, the calculation result was analyzed, then relevant practical recommendations are suggested which may be useful to similar researches and applications in later.

Keywords:Hole Method of Reinforcement;  actual internal force in member; drill then enlarge a  hole on  reinforcement; strain increment in bars near the measuring hole; calculation accuracy