新型混合装配式混凝土剪力墙抗震性能研究

项目名称： 新型混合装配式混凝土剪力墙抗震性能研究

项目编号： No.51308289

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 建筑科学

项目作者： 朱张峰

作者单位： 南京工业大学

项目金额： 25万元

中文摘要： 为解决装配式剪力墙开裂较早、耗能能力较低、水平拼缝混凝土过早压溃等难题，集成局部无粘结浆锚钢筋间接搭接连接技术、无粘结预应力压接技术及扣接封闭箍筋技术，开发新型混合装配式混凝土剪力墙，并从截面与构件层次研究其抗震性能。 主要研究内容包括：1）通过水平拼缝截面在压-弯组合作用下的受力计算与参数分析，掌握其受力机理，提出其延性破坏机制；2）引入截面受拉区名义拉应变及其分布，基于纤维模型，将拼缝截面进行等效连续化，并建立拼缝参数化模型；3）基于拼缝参数化模型，建立反映构件在水平荷载作用下受力全过程的多线性模型，将其作为构件抗震机制的理论分析模型，通过参数分析掌握各参数对构件抗震性能的影响规律；4）基于数值模拟及模型试验结果，验证并修正构件理论分析模型，通过反演分析提出适用的构件抗震设计程序。 研究成果可望解决装配式混凝土剪力墙应用于中、高烈度抗震设防区高层建筑的基本问题，为深入工程应用提供依据。

中文关键词： 预制混凝土；剪力墙；预应力；抗震性能；试验

英文摘要： In order to break through key problems of precast shear wall, such as earlier cracking, poor energy dissipation and premature crushing of concrete, new hybrid precast concrete shear wall (NHPW), based on the combination technique of partially deboned of grouting-anchoring overlapping reinforcement, unbounded posttensioned connection and connected closed hoop, is put forward in this project. The seismic performance of NHPW is studied through two levels of section and component. The main content of this project is as following. 1) Introducing key parameters brought about by core technology, the stress calculation and parameter analysis on horizontal connection section under the combined compression and bending moment are carried out to grasp the section mechanism and establish its ductile failure mode. 2) With introducing nominal tension strain in tensile region of section and adopting the fiber model, the connection section is equivalently serialized. Then, parameterized model for the section is determined considering the parameter analysis results. 3) Based on the section's parameterized model, the theoretical analysis model on seismic mechanism for component is established which is in the form of multi-liner model and can reflect the mechanic behavior of component under horizontal load. Then parameter analysis

英文关键词： precast concrete；shear walls；prestressing；seismic performance；test