Behavior of Clay Brick and Concrete Masonry Infill Wall

本项目由国家自然科学基金公告第90-23号“结构抗震修复与修复研究”资助。研究的目的是确定砌体填充板在地震中如何抵抗层剪力。调查的重点是现有填充物在发生重大损害之前可以承受的横向漂移量。此外，通过加载与其平面垂直的裂纹板来检查受损填料的稳定性。将制定修复措施，以提高横向抗弯强度。一系列全尺寸的样品将被构建和测试。每个测试结构将是一个单层砌体填充板，周围是一个单孔钢筋混凝土框架。水平力将以静态速率施加，但将以具有代表性的大小振幅序列循环。测试系列的变量将包括砌体单元的类型（粘土砖或混凝土块），砂浆的类型，框架的强度和刚度以及填充修复方法的类型。该项目是一个学术机构和专业工程公司结合基础研究的合作研究项目的一部分。它们共同代表了实施研究成果的共同努力。

This project is supported under NSF Announcement No. 90-23, "Repair and Rehabilitation Research for Seismic Resistance of Structures." The object of the research is to determine how masonry infill panels resist story shears during earthquakes. The focus of the investigation is on the tolerable amount of lateral drift that existing infills can resist within their plane before significant damage occurs. In addition, the stability of damaged infills is to be examined by loading cracked panels normal to their plane. Repair measures will be developed that will enhance transverse flexural strength. A series of full-scale specimens are to be constructed and tested. Each test structure will be a one-story masonry infill panel surrounded by a one-bay reinforced concrete frame. Horizontal forces will be applied at static rates, but will be cycled in a representative sequence of small and large amplitudes. Variables of the test series will include the type of masonry unit (clay brick or concrete block), the type of mortar, the strength and stiffness of the frame and the type of infill repair method. This project is part of a collaborative research effort which combines fundamental studies by an academic institution and a professional engineering firm. Together they represent a common effort for the implementation of research results.