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

2010年1月12日，海地发生里氏7.0级地震，太子港遭受严重破坏。完全倒塌的北码头是一个在未经工程处理的填土上建造的桩承边缘码头。南码头是一个桩支撑结构，建于1975年左右。在地震中，码头的最西部部分倒塌，其余部分严重受损;约40%的桩断裂，45%的中度损坏，15%的轻微损坏。这些设施的广泛损坏提供了一个重要的机会，以验证桩支撑的港口结构的数值模型，特别是对于严重损坏状态，包括倒塌。然而，这一机会要求迅速收集有关地震前存在的结构和岩土工程条件的详细数据。由于现有数据非常有限，因此需要额外的数据来准确描述条件。由于正在进行修复和更换受损设施的工作，相关数据很容易损坏，小组将通过几种途径获得结构和岩土工程数据，包括：（1）会见海地政府、葡萄牙国家当局、和美国海军设施工程司令部，以辨别作为-根据现有文件和其他类型的信息，尽可能详细地说明港口设施的建筑结构和岩土工程条件;（2）进行额外的土壤钻孔和圆锥贯入试验，以评估港口的土壤条件，并获得混凝土芯进行强度测试。目的是获得足够的数据，使这些严重受损的结构能够准确建模，并用于提高我们对港口结构地震反应的理解。本研究的学术价值在于：（1）验证了桩承结构的数值模型，特别是对于严重损伤状态（例如，倒塌）发生在港口和（2）收集数据的土壤液化过程中发生的地震和发展的横向蔓延，这将是有用的，在其本身的权利作为一个液化的案例历史。更广泛的影响的研究是，它将有助于知识的抗震设计的港口结构和岩土工程和结构数据获得将有助于努力重建严重受损的港口德港口-王子这项研究的数据将被存档在地震工程模拟网络（NEES）数据库中。该奖项由NSF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).