Seismic performance of seawater and sea sand concrete-filled ultra-high performance concrete tubes under low-cycle reversed lateral loading
Seismic performance of seawater and sea sand concrete-filled ultra-high performance concrete tubes under low-cycle reversed lateral loading
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低周反向横向荷载下海水和海砂混凝土超高性能混凝土管的抗震性能
DOI：
10.1177/1369433220980528
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发表时间：
2020-12
影响因子：
2.6
通讯作者：
Y Xiao
中科院分区：
文献类型：
--
作者：
G Liu;B Shan;DD Lai;FC Liu;Y Xiao
超高性能混凝土（UHPC）钢管海水海砂混凝土（SWSSC）柱是一种结合了UHPC优异的抗压强度和韧性以及纤维增强聚合物（FRP）箍的侧向约束作用的水泥基钢管组合柱。这种新型复合材料体系具有在海洋工程中应用的潜力。本文的目的是评价SFUHPC管柱的抗震性能，为海岸和海洋工程设计提供依据。对5个大型试件进行了低周反复水平加载试验。试验参数为FRP环箍体积比、填充SWSSC的抗压强度和FRP筋的种类。研究了该结构的破坏模式、滞回响应及主要参数的影响。SFUHPC管柱表现出弯曲破坏模式，UHPC保护层无可见剥落。值得注意的是，所有SFUHPC管柱的极限塑性位移比都超过了抗震设计规范中规定的罕遇地震限值（0.02）。研究结果表明，该组合柱具有良好的延性和相对可靠的抗侧力性能，可用于海洋工程中。从抗震性能的角度来看，在UHPC管中填充高强度SWSSC是可以接受的复合体系。
Seawater and sea sand concrete (SWSSC) filled ultra-high performance concrete (UHPC) tube (SFUHPC tube) column is a cement-based tubular composite column, which combines the excellent compressive strength and toughness of UHPC and lateral confining action from fiber reinforced polymer (FRP) hoops. The novel composite system has the potential to be used in marine engineering. The aims of this paper focus on evaluating the seismic performance of SFUHPC tube columns for being designed in costal and marine engineering. A series of low-cycle reversed lateral loading tests were conducted on five relatively large-scale specimens. FRP hoop volumetric ratio, compressive strength of filling SWSSC, and the types of FRP bar were selected as test parameters in this investigation. The failure modes, hysteretic responses and effects of main parameters were studied and discussed. SFUHPC tube columns exhibited flexural failure mode without visible spalling of the UHPC cover. It is noteworthy that the limit plastic drift ratios of all SFUHPC tube columns exceed the specified limits (0.02) in accordance to the rare earthquake requirement in seismic design code. The current study reveals that the proposed composite columns have acceptable ductility and relatively reliable lateral resistant performance for being used in the marine engineering. From the point of view of seismic performance, filling high strength SWSSC in UHPC tube is acceptable for the proposed composite system.
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影响因子：
7.4
作者：
W. Dias;G. Seneviratne;S. Nanayakkara
通讯作者：
W. Dias;G. Seneviratne;S. Nanayakkara
影响因子：
7.4
作者：
Qingtian Zhang;Jianzhuang Xiao;Peng Zhang;Kaijian Zhang
通讯作者：
Qingtian Zhang;Jianzhuang Xiao;Peng Zhang;Kaijian Zhang
DOI：
10.2991/icmce-14.2014.19
发表时间：
2014-12
期刊：
--
影响因子：
--
作者：
M. Cui;Jize Mao;Daoguang Jia;Ben Li
通讯作者：
M. Cui;Jize Mao;Daoguang Jia;Ben Li
影响因子：
5.5
作者：
Ying‐Lei Li;Xiao Ling Zhao;R. K. Raman;X. Yu
通讯作者：
Ying‐Lei Li;Xiao Ling Zhao;R. K. Raman;X. Yu
影响因子：
2.1
作者：
J. Limeira;L. Agulló;M. Etxeberria
通讯作者：
J. Limeira;L. Agulló;M. Etxeberria