Use of Loma Prieta Data to Evaluate, Understand and Improve Seismic Provisions of Elevator Codes

这是一个后洛马普列塔地震（1989年10月）的调查项目，在学习这一破坏性的事件。本项目集中于地震期间电梯的抗震性能，并将此学习与当前电梯规范要求相关联。一项损坏调查表明，洛马普列塔地震造成了广泛的电梯损坏，尽管导致这些问题的设计细节尚不清楚。很明显，地震开关，可选的加州，但需要的国家代码，没有按照预期的。这次地震提供了一个机会，以确定目前的电梯规范的不足之处，并提高我们对电梯的抗震性能的理解。将选择几个经历电梯损坏的建筑物来代表一系列配置、结构系统、电梯设备类型和位置。将根据专家访谈的损坏细节对电梯进行详细检查。将根据观察到的损坏情况和建议的更改对规范条款进行评估。最后，将评估影响地震安全装置性能的故障。这项研究将提升目前规范电梯系统地震安全的要求。

This is a post Loma Prieta earthquake (Oct. 1989) investigation project in learning from this damaging event. This project concentrates on the seismic performance of elevators during the earthquake and relates this learning to the current elevator code requirement. A damage survey indicates that the Loma Prieta earthquake has caused extensive elevator damage, although the design details that contributed to the problems are not known. It is clear that seismic switches, optional in California but required for the National code, did not performed as intended. This earthquake provides an opportunity to identify the deficiencies of current elevator codes and improve our understanding of the seismic performance of elevators. Several buildings that experienced elevator damages will be selected to represent a range of configurations, structural systems, types of elevator equipment, and locations. A detailed inspection of elevators will be made based on damage details from expert interviews. Code provisions will be evaluated in light of observed damage and changes suggested. Finally, the malfunctions effecting the performance of seismic safety devices will be evaluated. This study will upgrade the current code requirements governing the seismic safety of elevator systems.