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Seismic performance of anchored brick veneer.

机译：锚固砖饰面的抗震性能。

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摘要

A study was conducted on the out-of-plane seismic performance of anchored brick veneer with woodframe backup wall systems, to evaluate prescriptive design requirements and current construction practices. Prescriptive requirements for the design and construction of anchored brick veneer are currently provided by the Masonry Standards Joint Committee (MSJC) Building Code, the International Residential Code (IRC) for One- and Two-Family Dwellings, and the Brick Industry Association (BIA) Technical Notes. Laboratory tests were conducted on brick-tie-wood subassemblies, comprising two bricks with a corrugated sheet metal tie either nail- or screw-attached to a wood stud, permitting an evaluation of the stiffness, strength, and failure modes for a local portion of a veneer wall system, rather than just of a single tie by itself. Then, full-scale brick veneer wall specimens (two one-story solid walls, as well as a one-and-a-half story wall with a window opening and a gable region) were tested under static and dynamic out-of-plane loading on a shake table. The shake table tests captured the performance of brick veneer wall systems, including interaction and load-sharing between the brick veneer, corrugated sheet metal ties, and wood-frame backup. Finally, all of these test results were used to develop finite element models of brick veneer wall systems, including nonlinear inelastic properties for the tie connections. The experimental and analytical studies showed that the out-of-plane seismic performance of residential anchored brick veneer walls is generally governed by: tensile stiffness and strength properties of the tie connections, as controlled by tie installation details; overall grid spacing of the tie connections, especially for tie installation along the edges and in the upper regions of walls; and, overall wall geometric variations. Damage limit states for single-story residential brick veneer wall systems were established from the experimental and analytical studies as a function of tensile failure of key tie connections, and the seismic fragility of this form of construction was then evaluated. Based on the overall findings, it is recommended that codes incorporate specific requirements for tie connection installation along all brick veneer wall edges, as well as for tie connection installation at reduced spacings in the upper regions of wall panels and near stiffer regions of the backup. Residential anchored brick veneer construction should as a minimum be built in accordance with the current prescriptive code requirements and recommendations, throughout low to moderate seismicity regions of the central and eastern U.S., whereas non-compliant methods of construction commonly substituted in practice are generally not acceptable.
机译：对带有木结构支撑墙系统的锚固砖单板的面外抗震性能进行了研究，以评估说明性设计要求和当前的施工实践。目前，砌体标准联合委员会（MSJC）建筑规范，国际住宅和一居室住宅规范（IRC）以及砖工业协会（BIA）提供了锚固砖单板设计和建造的规范要求。技术说明。实验室测试是在砖木连接子组件上进行的，该组件包括两块带有波纹板状金属绑带的砖块，它们用钉子或螺钉连接到木钉上，从而可以评估木钉局部的刚度，强度和破坏模式。单板墙系统，而不是单条领带。然后，在静态和动态平面外下测试了全尺寸砖墙贴面标本（两个单层实心墙以及一个有窗孔和山墙区域的半层故事墙）在摇床上装载。振动台测试记录了砖饰面墙系统的性能，包括砖饰面，波纹金属薄板扎带和木结构支撑之间的相互作用和负载分担。最后，所有这些测试结果都被用于开发砖墙贴面墙系统的有限元模型，包括用于连接的非线性非弹性特性。实验和分析研究表明，住宅锚固砖饰面墙的面外抗震性能通常受以下因素支配：系杆连接的抗拉刚度和强度特性，受系杆安装细节控制；扎带连接的总体网格间距，尤其是沿边缘和墙壁上部区域的扎带安装；以及整体壁的几何变化。通过实验和分析研究，建立了单层住宅砖饰面墙系统的破坏极限状态，作为关键连接连接的拉伸破坏的函数，然后评估了这种结构形式的地震脆性。根据总的发现，建议规范包含对沿所有砖饰面墙边缘的系固连接安装以及在墙板上部区域和支撑的较硬区域附近以减小的间距进行系固连接安装的特定要求。在美国中部和东部的中低地震烈度地区，应至少根据当前的规范要求和建议建造住宅锚​​固砖饰面结构，而实际上通常不接受的不合规建筑方法通常是不可接受的。

著录项

  • 作者

    Reneckis, Dziugas Joseph.;

  • 作者单位

    University of Illinois at Urbana-Champaign.;

  • 授予单位 University of Illinois at Urbana-Champaign.;
  • 学科 Engineering Civil.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 242 p.
  • 总页数 242
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;
  • 关键词

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