Response of Precast Construction in Turkey during the 1999 Earthquakes

1999 年地震期间土耳其预制建筑的应对措施

• 批准号: 0085337
• 负责人: Sharon Wood
• 金额: $ 7.5万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-15 至 2002-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0085337&HistoricalAwards=false
• 关键词: Response; Precast; Construction; Turkey; during

ABSTRACTResponse of Precast Construction in Turkey during the 1999 EarthquakesThe 1998 Turkish Seismic Code permits four types of precast construction: moment-resisting frames, single-story hinged frames, structural wall panels, and combinations of precast moment-resisting frames with cast-in-place structural walls (solid or coupled). Single-story hinged frames are used throughout Turkey for industrial facilities. This type of structural system has not performed well in recent earthquakes, including the 1992 event in Erzincan, the 1998 event in Ceyhan, and the recent events near Izmit and Duzce.Recent experience has shown that precast structures in the U.S. are also vulnerable to earthquake damage. Parking structures were sustained damage at higher than anticipated levels during the 1994 Northridge earthquake. Only after detailed evaluation of precast parking structures in the Los Angeles area were the causes of the damage identified. Many factors that contributed to the observed response were not considered in the governing building codes. The goal of the proposed work is to collect detailed information about the structural configuration and connection details from damaged and undamaged precast buildings in the region of Turkey affected by the 17 August and 12 November 1999 earthquakes. Data collected will be evaluated with the goal of reducing the seismic vulnerability of precast construction in both the U.S. and Turkey.

1998年土耳其地震规范允许四种类型的预制结构：抗弯框架、单层铰接框架、结构墙板以及预制抗弯框架与现浇结构墙（实心或耦合）的组合。 单层铰接框架在土耳其各地用于工业设施。 这种类型的结构体系在最近的地震中表现不佳，包括1992年的埃尔津坎地震、1998年的杰伊汉地震以及最近伊兹米特和杜兹切附近的地震。最近的经验表明，美国的预制结构也容易受到地震破坏。 在1994年北岭地震中，停车场结构遭受的破坏程度高于预期。 只有在对洛杉矶地区的预制停车场结构进行详细评估后，才确定了损坏的原因。 许多导致观察到的反应的因素在管理建筑规范中没有考虑。 拟议工作的目标是从土耳其地区受1999年8月17日和11月12日地震影响的受损和未受损预制建筑物中收集有关结构配置和连接细节的详细信息。 收集的数据将进行评估，以减少美国和土耳其预制建筑的地震脆弱性。