短肢剪力墙在低周反复荷载作用下结构破坏模式分析.pdfVIP

第 六 届 全 国 土 木 工 程 研 究 生 学 术 论 坛 清 华 大 学 2008 短肢剪力墙在低周反复荷载作用下结构破坏模式分析 余军，李青宁，窦炜，刘海燕 (西安建筑科技大学土木工程学院，陕西 西安 710055 ) 摘要：短肢剪力墙是近年来在我国兴起的一种新型抗侧力体系, 兼有框架和剪力墙的优点，其建筑功能、 结构受力和工程造价等均较合理，因此，在高层建筑中越来越得到广泛的应用。但由于目前对它的研究不 充分,还没有一套完整的设计理论和方法来指导工程设计，甚至目前关于剪力墙、短肢剪力墙、宽肢异形 柱、异形柱的概念和划分界限都没有十分明确。因此,系统的研究短肢剪力墙结构的力学性能、破坏形态 已成为工程实际中迫切需要解决的问题。根据计算理论的研究成果，对T形和 L形短肢剪力墙试件进行了 低周反复荷载试验。通过试验揭示了短肢墙从弹性应力状态到砼开裂、钢筋屈服、直至结构破坏的全过程。 结果表明：轴压比越大，截面的滞回曲线不对称越明显，这对抗震也很不利。轴压比高的短肢剪力墙的开 裂荷载、屈服荷载和极限荷载要比轴压比低的短肢剪力墙大,但延性和耗能能力要比后者小；当肢厚比从4 增大到9时,结构将有不同的破坏模式。本试验对短肢剪力墙在地震作用下破坏研究起到重要作用。 关键词：短肢剪力墙；轴压比；极限荷载；破坏模式 Failure Mode of SLW Under Monotonic and Cyclic Reversed Loading and Its Analys YuJun, LiQingning, DouWei, LiuHaiyan (College of Civil Engineering ,Xi’an University of Architecture and Technology ,Xi’an 710055 ,China) Abstract: The short shear wall is the rise of a new type of anti-side of the system in China in recent years, the framework of both the advantages and shear walls, their construction features, work force and the structure of the project cost are reasonable，therefore, High-rise buildings are more widely used. However, because of its current research is not adequate, not a complete set of design theory and methods to guide engineering design. Even now on the shear walls, short shear wall, deformed limbs-wide, contoured, in the concept of boundaries and are not very clear, therefore, the systematic study of the short shear wall structure of the mechanical properties, has become a form of destruction of the actual design of the urgent need to address the issue asked. According to the results of research on theory, the T-shaped and L-shaped short shear wall specimens were repeated low-load test. Through the test revealed the short pier wall from