ABSTRACT

Glazing damage reported following recent New Zealand earthquakes, i.e. the 2011 (M_w 6.2) Christchurch and 2016 (M_w 7.8) Kaikōura earthquakes, exceeded what would be expected from glazing designed or tested to council’s compliance pathways, which indicates improvements are required to the existing pathways. Two series of proof-of-concept tests were conducted to induce simulated seismic actions on glazing specimens to better understand the failure mechanisms of gasket dislodgement, cracks in the glazing, and dislodgement of the glass to improve existing compliance tests and engineering design. The Series 1 tests consisted of 6 mm annealed window glass clamped in a steel frame with the load applied to the glazing with hydraulic jacks positioned in three distinct positions. The Series 2 tests consisted of a reverse cyclic loading on a commercial window located near the bottom of a direct-fixed rainscreen specimen. The test results were used to formulate a method that could predict the likelihood of seismic damage to glazing systems, improve compliance pathways, and is useful as a forensic predictive tool.

摘要

最近新西兰地震后报告的玻璃损坏，即 2011 年（M _w 6.2）基督城和 2016 年（M _w7.8) Kaikōura 地震超出了对议会合规路径的玻璃设计或测试的预期，这表明需要对现有路径进行改进。进行了两个系列的概念验证测试，以模拟对玻璃样品的地震作用，以更好地了解垫圈移位、玻璃裂缝和玻璃移位的失效机制，以改进现有的合规性测试和工程设计。系列 1 测试包括夹在钢框架中的 6 毫米退火窗玻璃，负载施加在玻璃上，液压千斤顶位于三个不同的位置。系列 2 测试包括在靠近直接固定的雨幕样品底部的商业窗户上进行反向循环加载。