新增部分剪力墙的框架结构抗震性能研究  

Study on seismic performance of frame structure with new partial shear walls

作　　者：范夕森[1,2] 高宇 FAN Xisen;GAO Yu(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Key Laboratory of Building Structural Retrofitting and Underground Space Engineering,Ministry of Education,Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]山东建筑大学土木工程学院,山东济南250101 [2]山东建筑大学建筑结构加固改造与地下空间工程教育部重点实验室,山东济南250101

出　　处：《四川建筑科学研究》2024年第1期1-12,共12页Sichuan Building Science

基　　金：山东省住建厅研究开发项目(2020kykf05-018)。

摘　　要：在框架结构中新增部分剪力墙,能够明显提升结构的抗震性能,框架与新增部分剪力墙之间新老混凝土界面受力行为是结构分析的关键问题。运用ABAQUS有限元软件,基于新老混凝土界面模拟方法,建立了4个高宽比为1.5的框架-剪力墙模型,通过低周往复加载,研究了新老混凝土界面参数、新增剪力墙的混凝土强度、墙与框架的连接方式对承载力的影响。分析了新增部分剪力墙的框架结构和整浇框架-剪力墙结构在破坏形态、承载力和延性等抗震性能方面的差异。研究结果表明:新增部分剪力墙的框架结构的屈服荷载和峰值荷载都小于整浇框架-剪力墙结构,新增墙体端部设暗柱,不与框架柱连接的方式和分布筋全部插入框架的方式在承载力上相差不大。最后,给出了新增部分剪力墙的框架结构的水平承载力计算公式。Adding some shear walls to the frame structure can obviously improve the seismic performance of the structure.The stress behavior of the new and old concrete interface of the frame structure and the new shear walls is the key problem in structural analysis.The finite element software ABAQUS was used to establish four frame-shear wall models with a height to width ratio of 1.5 based on the interface simulation method of the new and the old concrete.Through low cycle reciprocating loading,the influence of parameters of the new and the old concrete interface,the concrete strength of newly added shear wall and the connection mode of wall and frame on the bearing capacity was studied.The differences between frame structure with new partial shear walls and whole-cast frame-wall structure in failure form,bearing capacity and ductility were analyzed.The results show that the yield load and peak load of the frame structure with new partial shear walls are weaker than that of the whole-cast frame-wall structure.There is litle difference in the bearing capacity between the way that the newly added wall has dark columns at the end and the way that the distributed bars are completely inserted into the frame.The calculation formula of the horizontal bearing capacity for frame structure with new partial shear walls was given.

关 键 词：新增部分剪力墙的框架 抗震性能 水平承载力 新老混凝土界面 

分 类 号：TU375[建筑科学—结构工程]