Seismic Performance and Design of Reinforced Soil Structures with Reference to Lessons Learned from the 1999 Earthquakes of Taiwan and Turkey

CMS0084449题目：《从1999年台湾和土耳其地震中吸取教训的加筋土结构的抗震性能和设计》PI：H.I.LingInstitution：哥伦比亚大学摘要：加筋土结构是一种新兴技术，可以快速、经济地建造挡土墙、斜坡和路堤。许多加筋土结构是在地形复杂或空间有限的城市地区建造的。加筋土结构在正常荷载条件下的性能是令人满意的。在北岭和神户地震中，它们的性能优于传统的重力式和悬臂式挡土墙。然而，在北岭地震期间，加筋土结构距离震中较远，因此没有受到高地震荷载的影响。日本建造的加筋土结构具有刚性面层，与世界其他地区的加筋土结构不同。特别是，在美国、土耳其和台湾地区普遍使用的模块化砌块面层加筋土结构，日本没有建造。因此，台湾和土耳其的地震提供了一个独特的机会来检验在美国常见的加筋土结构的性能。私人投资督察访问了台湾和土耳其的地震灾区，以确定与美国专利系统相似的受损加筋土结构。这项拟议的研究涉及通过与台湾和土耳其的研究人员和执业工程师合作来调查失败的机制。本研究拟于一年内完成下列目标：1.评估加筋土结构在台湾及土耳其地震中的表现。获取地震灾区加筋土结构的技术细节，包括墙体配置、加筋布置、土体和加筋性质、地震特性等。对已识别的加筋土结构的简化地震分析程序进行评估。4.组织关于加筋土结构抗震设计问题的国际研讨会。5.根据研究和工作的结果，对现行的设计程序提出改善建议。在最近的地震中，加筋土结构的破坏可能表明现有的设计程序不够充分。或者，这可能是由于设计/施工不当造成的。因此，拟议的研究将为美国和世界各地的研究人员和执业工程师带来重大的技术利益。

CMS0084449Title: "Seismic Performance and Design of Reinforced Soil Structures with Reference to Lessons Learned from the 1999 Earthquakes of Taiwan and Turkey"PI: H. I. LingInstitution: Columbia UniversityAbstract:Reinforced soil structures are an emerging technology that allows rapid and economic construction of retaining walls, slopes and embankments. Many reinforced soil structures are constructed in difficult terrain or in urban areas where space is limited. The performance of reinforced soil structures under normal loading conditions is known to be satisfactory. During the Northridge and Kobe earthquakes their performance was better than conventional gravity and cantilever retaining walls. However, during the Northridge Earthquake, the reinforced soil structures were at a distance from the epicenter and thus they were not subjected to high seismic loading. Reinforced soil structures constructed in Japan have rigid facing and they are different from those present in other parts of the world. In particular, reinforced soil structures with modular-block facing, commonly used in the United States, Turkey and Taiwan are not constructed in Japan. Therefore, the earthquakes of Taiwan and Turkey provided a unique opportunity to examine the performance of versions of reinforced soil structures commonly found in the United States. The PIs visited the earthquake-affected areas in Taiwan and Turkey to identify damaged reinforced soil structures which are similar to the U.S. proprietary system. The proposed research involves investigating the mechanism of failure through collaboration with researchers and practicing engineers from Taiwan and Turkey. The proposed research aims to achieve the following objectives within the given one-year time framework:1. To assess the performance of reinforced soil structures during the earthquakes of Taiwan and Turkey.2. To obtain the technical details of the reinforced soil structures in the earthquake-affected areas, including wall configuration, reinforcement layout, soil and reinforcement properties, and earthquake characteristics.3. To evaluate simplified seismic analysis procedures for the identified reinforced soil structures. 4. To organize an international workshop on the issues of seismic design of reinforced soil structures. 5. To suggest improvements to current design procedures based on the results of study and workshop.The failure of reinforced soil structures during recent earthquakes may indicate that existing design procedures are inadequate. Alternatively, it might be a result of improper design/construction. Thus, the proposed research will lead to significant technological benefits to researchers and practicing engineers in the United Staes and worldwide.