Seismic Performance of a Full-Size Polypropylene Fiber-Reinforced Cement Composite Bridge Column Based on E-Defense Shake Table Experiments
Seismic Performance of a Full-Size Polypropylene Fiber-Reinforced Cement Composite Bridge Column Based on E-Defense Shake Table Experiments
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DOI：
10.1080/13632469.2011.651558
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发表时间：
2012-01-01
影响因子：
2.6
通讯作者：
Yabe, Masaaki
中科院分区：
文献类型：
--
作者：
Kawashima, Kazuhiko;Zafra, Richelle G.;Yabe, Masaaki
E-Defense振动台试验对一个7.5 m高、1.8 m × 1.8 m的正方形桥梁柱进行了试验，该桥柱在塑性铰区和部分基脚处使用了聚丙烯纤维增强水泥复合材料（PFRC）。在1995年日本科比地震期间，使用JR Takatori站记录的近场地面运动原始强度的80%激发柱。PFRC的使用减轻了保护层和核心混凝土的损坏，纵筋的局部屈曲，甚至在六次重复激励后的拉杆变形。损伤程度远小于普通钢筋混凝土柱。
E-Defense shake table experiments on a 7.5 m tall, 1.8 m by 1.8 m square bridge column using polypropylene fiber-reinforced cement composites (PFRC) at the plastic hinge region and part of the footing is presented. The column was excited using 80% of the original intensity of the near-field ground motion recorded at the JR Takatori Station during the 1995 Kobe, Japan earthquake. Use of PFRC mitigated cover and core concrete damage, local buckling of longitudinal bars, and deformation of ties even after six times of repeated excitation. The damage sustained was much less than the damage of regular reinforced concrete columns.