RAPID: Seismic Performance Assessment of the Wharf and Pier at the Port de Port-au-Prince

太子港在2010年1月12日的7.0级海地地震中遭受了严重的破坏。完全坍塌的北码头是在非工程填充物上建造的桩支撑边缘码头。南码头是一个桩支撑结构，大约建于1975年。在地震中，桥墩最西端部分倒塌，其余部分严重受损；约40%的桩被破坏，45%的桩被中度破坏，15%的桩被轻度破坏。这些设施的广泛破坏为验证桩支撑港口结构的数值模型提供了重要的机会，特别是对于包括倒塌在内的严重破坏状态。然而，这一机会需要迅速收集地震前存在的结构和岩土条件的详细数据。由于现有数据非常有限，需要额外的数据来准确地描述条件。由于正在进行修复和更换受损设施的工作，相关数据容易损坏。视察队将通过几种方式获得结构和岩土技术数据，包括(1)与海地政府、葡萄牙国家当局、以及美国海军设施工程司令部，根据现有文件和他们可能拥有的其他类型的信息，尽可能详细地识别港口设施的已建成结构和岩土条件；(2)进行额外的土壤钻孔和锥体穿透试验，以评估港口的土壤条件，并获得用于强度测试的混凝土芯。目的是获得足够的数据，以便对这些严重受损的结构进行精确建模，并用于提高我们对港口结构地震反应的理解。该研究的智力优点是：(1)验证桩支撑结构的数值模型，特别是对港口发生的严重破坏状态（例如倒塌）；(2)收集地震期间液化并发展横向扩散的土壤数据，这些数据本身就可以作为液化案例历史。这项研究的一个更广泛的影响是，它将有助于了解港口结构的抗震设计，所获得的岩土技术和结构数据将有助于重建严重受损的太子港。该研究的数据将存档在地震工程模拟网络（NEES）数据存储库中。该奖项由美国国家科学基金会国际科学与工程办公室（OISE）共同资助。

The Port de Port-au-Prince suffered extensive damage during the 12 January 2010, Mw 7.0 Haiti earthquake. The North Wharf, which collapsed completely, was a pile-supported marginal wharf constructed on un-engineered fill. The South Pier is a pile-supported structure that was built in about 1975. During the earthquake, the western-most section of the pier collapsed and the remaining portion was heavily damaged; approximately 40% of the piles were broken, 45% were moderately damaged, and 15% were slightly damaged.The extensive damage to these facilities provides an important opportunity to validate numerical models of pile-supported port structures, particularly for severe damage states including collapse. However this opportunity requires that detailed data about the structural and geotechnical conditions that existed prior to the earthquake are quickly gathered. Because the existing data is very limited, additional data is needed to accurately characterize the conditions. Because of ongoing work to repair and replace the damaged facilities, relevant data are perishable.The team will obtain structural and geotechnical data via several means, including (1) meeting with representatives from the Government of Haiti, Autorite Portuaire Nationale, and the U.S. Naval Facilities Engineering Command to discern the as-built structural and geotechnical conditions of the port facilities in as much detail as possible based on available documents and other types of information they may have available and (2) performing additional soil borings and cone penetration tests to evaluate the soil conditions at the port and obtaining concrete cores for strength testing.The objective is to acquire sufficient data to allow these heavily damaged structures to be accurately modeled and used to advance our understanding of the seismic response of port structures. The intellectual merits of the study are: (1) validating numerical models of pile-supported structures, especially for the severe damage states (e.g., collapse) that occurred at the port and (2) collecting data on soils that liquefied during the earthquake and developed lateral spreads that will be useful in its own right as a liquefaction case history.A broader impact of the study is that it will contribute to knowledge of the seismic design of port structures and the geotechnical and structural data acquired will assist with the effort to rebuild the heavily damaged Port de Port-au-Prince. Data from the study will be archived in the Network for Earthquake Engineering Simulation (NEES) Data Repository.This award is co-funded by the NSF Office of International Science and Engineering (OISE).