Response and Damage of Unreinforced Masonry Buildings in Loma Prieta Earthquake

这是1989年10月洛马普列塔地震后的一次地震。 调查项目在学习这一破坏性的 活动 该项目将重点研究 无筋砌体建筑（UMR） 地震 选定结构的响应将是 使用计算模型估计，并与 结构强度的预期和 损害 该研究将包括位于 阿拉米达、蒙特雷、圣克拉拉、圣克鲁斯和 旧金山弗朗西斯科。 受损和未受损的结构将 被考虑。 这项研究将包括各种各样的砌体元素 包括抵抗内部力的结构墙 并垂直于其平面，用钢填充面板 或混凝土框架、覆层、护墙等 非结构元素。 工程和非工程 将研究建设。 候选结构将 根据损害程度选择进行调查， 预期的兵力水平、位置、土壤条件，以及 提供有关地面运动的资料， 结构描述。 预计获得的知识将有助于 减轻美国东部的地震灾害 由于无筋砌体的广泛使用， 可能发生中等强度地震的地区。

This is a post Loma Prieta earthquake (Oct. 1989) investigation project in learning from this damaging event. The project will focus on the study of performance of unreinforced masonry buildings (UMR) during the earthquake. Response of selected structures will be estimated using computational models, and correlated with expectations of structural strength and observations of damage. The study will encompass buildings located in the counties of Alameda, Monterey, Santa Clara, Santa Cruz and San Francisco. Both damaged and undamaged structures will be considered. The study will include a wide variety of masonry element types including structural walls resisting forces within and normal to their plane, infill panels in either steel or concrete frames, cladding, parapets, and other nonstructural elements. Both engineered and nonengineered construction will be studied. Candidate structures will be selected for investigation based on degree of damage, expected force level, location, soil conditions, and availability of information on ground motions and structural descriptions. It is expected that knowledge gained will be helpful for mitigating the earthquake hazard in the eastern USA because of the widespread use of unreinforced masonry in those regions of a potential moderate intense earthquake.