Seismic and Durability Assessment of Externally Bonded FRP Retrofits in Reinforced Concrete Structures After 2018 Anchorage, AK Earthquake
Seismic and Durability Assessment of Externally Bonded FRP Retrofits in Reinforced Concrete Structures After 2018 Anchorage, AK Earthquake
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2018 年阿拉斯加州安克雷奇地震后钢筋混凝土结构外粘合 FRP 改造的抗震和耐久性评估
DOI：
10.1007/978-3-030-88166-5_106
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Tatar, Jovan
中科院分区：
文献类型：
--
作者：
Milev, Sandra;Ahmed, Shafique;Hassan, Mariam;Sattar, Siamak;Goodwin, David;Tatar, Jovan
外粘结纤维增强聚合物(EBFRP)复合材料是一种用于既有混凝土结构修复和抗震加固的经济有效的材料。尽管EBFRP复合材料在过去20多年中已被广泛用于抗震加固，但很少有数据记录它们在真实震动事件中或在混凝土结构上长期使用后的性能。在这项研究中，采用半破坏性和非破坏性技术来评估经历了2018年亚肯色州安克雷奇库克湾地震的EBFRP加固建筑的性能和耐久性。通过摄影证据对EBFRP的性能进行了评估和记录。采用声学探测、红外热像仪和粘结剥离试验对EBFRP与混凝土之间的粘结质量进行了评价。还从建筑内部和外部收集了EBFRP样本，用于化学和热分析，以评估环境暴露的长期影响。虽然环境条件影响EBFRP复合材料与混凝土基材之间的粘结质量，但EBFRP加固的建筑构件没有明显的地震破坏迹象。材料表征结果表明，EBFRP外部样品中没有聚合物基质降解的证据。
Externally bonded fiber-reinforced polymer (EBFRP) composites are a cost-effective material used for repair and seismic retrofit of existing concrete structures. Even though EBFRP composites have been extensively utilized over the past 20 years as seismic retrofits, there are few data documenting their performance in a real shaking event or after long-term use on concrete structures. In this study, semi-destructive and non-destructive techniques were employed to evaluate the performance and durability of EBFRP-retrofitted buildings that had experienced the 2018 Cook Inlet Earthquake in Anchorage, AK. The performance of EBFRP was evaluated and documented through photographic evidence. Acoustic sounding, infrared thermography, and bond pull-off tests were utilized to evaluate the quality of bonding between the EBFRP and concrete. EBFRP samples were also collected from building interiors and exteriors for chemical and thermal analysis to evaluate the long-term effects of environmental exposure. Although environmental conditions were found to influence the bond quality between the EBFRP composite and concrete substrate, no major signs of earthquake damage to the building components retrofitted with EBFRP were noted. Materials characterization results demonstrated no evidence of polymer matrix degradation in exterior EBFRP samples.
停止使用的碳纤维增强聚合物修复桥梁梁的结构测试和解剖
影响因子：
1.8
作者：
J. Tatar;D. Wagner;H. Hamilton
通讯作者：
H. Hamilton