SGER: Impact of Hurricane Charley on Residential and Commercial Construction

随着美国普通住宅的面积越来越大，它们的形状也从简单屋顶的矩形盒子变成了需要复杂屋顶结构的不规则平面形状。这些较新建筑的性能受到飓风查利的严峻考验，这是12年来首次袭击佛罗里达的4级飓风。查利事件后的一项初步调查发现，在许多情况下，新住宅的屋顶损坏仅限于瓷砖或木瓦的丢失。因此，这种损坏提供了一个定性的地图，在不规则的结构，在飓风风力的风压分布和强度。这些来自实际建筑物的数据对于校准不规则结构的数值和实验分析是非常宝贵的。本研究的目的是在不可逆转地丢失之前系统地快速地汇编风害数据。数据收集的重点将是（1）所选的不规则结构的屋顶，如所讨论的那样，（2）开放式建筑物，例如加油站和停车场-这些建筑物在第1类风荷载作用下的破坏（例如，由于飓风查理和最近的飓风弗朗西斯，因为他们穿越波尔克县）建议可能存在的缺陷，规范规定，可能需要通过模型测试和纠正（3）楼板失败的商业建筑物，以确定他们是否协助基脚支持隆起负荷的建议，通过测试和分析。从失败的结构中获得的证据将导致更有效的设计、建造和改造。收集的信息将使未来的计算模型和/或风洞测试的校准，以确定不规则的，低层建筑的风压系数。重点将放在获得选定结构的高质量和完整的数据上。

AbstractAs average American homes have become larger in size, their shapes have deviated from rectangular boxes with simple roofs to irregular plan forms necessitating complex roof configurations. The performance of these newer buildings was severely tested by Hurricane Charley, the first Category 4 hurricane to hit Florida in 12 years. A preliminary post-Charley survey found that roof damage in newer homes was in many instances limited to missing tiles or shingles. This damage therefore provides a qualitative map of the wind pressure distribution and its intensity in irregular structures under hurricane force winds. Such data from actual buildings is invaluable for calibrating numerical and experimental analyses of irregular structures.The aim of this study is to compile wind damage data systematically and expeditiously before it is irretrievably lost. The focus of the data collection will be (1) roofs of selected irregular structures with missing tiles or shingles as discussed, (2) open structures such as gas stations and carports - the failure of these structures under category 1 wind loads (e.g. due to Hurricane Charley and more recently Hurricane Frances as they traversed across Polk County) suggests possible deficiencies in code provisions that may require rectification through model testing and (3) floor slabs of failed commercial buildings to determine if they assisted footings in supporting uplift loads as suggested by testing and analysis. Evidence from failed structures will lead to more effective design, construction and retrofit. The information gathered will enable future calibration of computational models and/or wind tunnel testing for determining wind pressure coefficients in irregular, low-rise buildings. Emphasis will be placed on obtaining quality and complete data for the selected structures.