陈大川 周楚瑶 张建华 刘武

摘要：托换节点的可靠性是保证房屋整体平移安全的重要因素之一.为研究砖柱托换节点在平移过程中的受力性能，以某保护建筑为例，采用ABAQUS有限元软件建立了平移工程中砖柱托换节点的有限元模型，分别对采用高性能水泥复合砂浆钢筋网（HPFL）加固的托换节点和未加固的托换节点的受力和变形性能进行分析，同时结合现场监测数据对有限元结果进行对比分析.结果表明，采用HPFL加固方式能有效提高砖柱托换节点的承载力和变形能力，有效抵抗平移过程中各种不利作用，该加固托换方式是安全可靠的；实际监测结果与模拟结果吻合较好，证明了该模拟方法的可行性.

关键词：砌体结构；托换节点；砖柱；加固；平移

中图分类号：TU398文献标志码：A

Analysis on Mechanical Behavior of Brick Columns Underpinning Joints in Masonry Building Structure Moving

CHEN Dachuan1，2，3，ZHOU Chuyao1，2，3，ZHANG Jianhua4，LIU Wu4

（1. College of Civil Engineering，Hunan University，Changsha 410082，China；2. Key Laboratory of Building Safety and Energy Efficiency（Hunan University）of the Ministry of Education，Changsha 410082，China；3. Key Laboratory for Damage Diagnosis of Engineering Structures（Hunan University）of Hunan Province，Changsha 410082，China；4. China Machinery International Engineering Design & Research Institute Co Ltd，Changsha 410021，China）

Abstract：The reliability of the brick column underpinning joints is one of the important factors to ensure the safety of building monolithic moving. In order to study the mechanical performance of the brick column underpinning joints in the process of moving， this paper takes a protected building as an example and uses the ABAQUS finite ele-ment software to establish the finite element model of the brick column underpinning joints. Through the simulation analysis，the stress and deformation performance of high performance ferrocement laminate（HPFL）reinforced and unreinforced underpinning joints are investigated. Meanwhile，the comparison with field monitoring data are also car-ried out. The results show that HPFL reinforcement method can effectively improve the bearing capacity and deforma-tion capacity of the brick columns underpinning joints，and the ability of effective resistance under various adverse ef-fects in the process of translation is also proved. The method is safe and reliable. The simulation results are in good a-greement with the field monitoring results，which proves the feasibility of the simulation method.

Key words：masonry structure；underpinning joint；masonry columns；reinforce；moving

優秀历史建筑记录了社会文明的发展和文化的积淀，不可随意进行拆除破坏，在与城市规划相冲突的背景下，对其进行保护和合理利用已成为当务之急.建筑移位技术为解决这一问题提供了有效途径，其中结构托换是建筑物移位过程中的关键环节.

砌体结构是历史保护建筑的主要结构形式，砖墙、柱作为竖向受压构件，具有较好的抗压能力，但由于砂浆和块体间的黏结能力较弱，抗拉、抗剪、抗弯的能力均很低，具有脆性特征.结构在长期使用过程中经历自然环境的侵蚀和人为损伤，结构构件承载能力、抗变形能力基本不能满足现行规范标准的安全……