Interface Mechanics of Masonry Panels under Biaxial Loading

双轴荷载下砌体板的界面力学

• 批准号: 1100971
• 负责人: Kaspar Willam
• 金额: $ 30.92万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-15 至 2016-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1100971&HistoricalAwards=false
• 关键词: Interface; Mechanics; Masonry; Panels; under

This project investigates the performance of brick and mortar wall panels under different combinations of in-plane loading representative of masonry structures under seismic events. An experimental program will take advantage of the existing "Universal Panel Tester" at the University of Houston to examine 1.4mx1.4m masonry panels under different combinations of biaxial compression and tension. A digital image correlation system will be used to trace progressive cracking and sliding in the bed and head joints of the brick and mortar material system and potential cracking of the brittle brick units. A computational model will be developed to capture the brittle-ductile failure mechanism of the two component material system, which will be validated from experimental observations to quantify inherent uncertainties in masonry construction.The research involves two graduate students under the direction of the two faculty in addition to one undergraduate student who will be trained (a) in the fields of servo-controlled multi-axial testing, (b) in the use of powerful imaging to track emerging failure mechanisms, and (c) in the field of computer modeling of effective material properties of masonry construction under different in-plane load scenarios. Special efforts will be undertaken to recruit diverse Undergraduate and Graduate students through the proximity with the Texas Southern University, TSU, located next to the University of Houston, and with Prairie View A&M University. National and international cooperation with our colleagues at the University of California-San Diego and at the Polytechnical University of Catalonia, UPC-Barcelona, will serve to reach out to the Hispanic communities, whereby a student exchange program will provide additional incentives.

该项目研究了在地震事件下的砌体结构代表的不同组合中，研究砖和砂浆墙板的性能。 一个实验计划将利用休斯敦大学现有的“通用面板测试仪”，以检查双轴压缩和张力的不同组合下的1.4mx14m砌体面板。数字图像相关系统将用于追踪砖和砂浆材料系统的床和头关节的渐进式裂纹和滑动，以及脆性砖单元的潜在破裂。将开发一个计算模型来捕获两个组件材料系统的易碎性可抗性故障机制，该机制将从实验性观测值中验证，以量化砌体构造中固有的不确定性。该研究还涉及两名研究生在两位教职员工的指导下，除了在一名本科生中培训了一项在赛道上（A）在赛道上进行了多项训练（A），以实现多项训练（A），以实现多项训练（a）。在不同的平面内负载方案下，新兴的破坏机制和（c）在砖石构建有效材料构建的计算机建模领域。通过与位于休斯顿大学旁边的德克萨斯州南部大学以及Prairie View A＆M University的邻近，将采取特殊努力，以招募多样化的本科和研究生。与加利福尼亚大学迭戈大学和加泰罗尼亚理工大学UPC-Barcelona的国家和国际合作将有助于与西班牙裔社区接触，从而提供学生交流计划，提供其他激励措施。