使用工程水泥基复合材料夹板和纤维增强聚合物条加固的砌体柱的轴向压缩行为研究

IF 2.1 4区 工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Tong Hao, Weilai Chen, Pu Zhang, Ye Liu, Shamim Ahmed Sheikh
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引用次数: 0

摘要

本文介绍了对 19 根加固砌体柱的轴向压缩特性和破坏力学的实验和分析研究。通过在砌体柱侧面涂抹工程水泥基复合材料(ECC)夹板和缠绕非连续纤维增强聚合物(FRP)条,对砌体柱进行了单体和复合加固。本实验研究分析并讨论了加固材料类型(ECC 夹板或 FRP 带)、ECC 夹板厚度和 FRP 带加固面积比对试件破坏模式、峰值荷载、应变行为和能量耗散的影响。在适当的参数条件下,复合加固砌体柱的加固效果最佳。特别是,通过使用抗拉强度较低的玻璃钢、较高的玻璃钢条加固面积比和较厚的 ECC 夹板,砌体柱的延性、承载能力和能量耗散可得到显著改善。根据现有的使用 ECC 夹板和玻璃钢条加固砌体柱的计算模型和规范计算方法,得出了加固砌体柱的抗压承载力计算公式。所有计算结果和测量结果之间的误差均小于 7.1%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on the axial compression behavior of masonry columns strengthened with engineered cementitious composite splints and fiber-reinforced polymer strips
This paper presents experimental and analytical studies on the axial compressive properties and failure mechanics of 19 strengthened masonry columns. The masonry column was strengthened singly and compositely by applying engineered cementitious composite (ECC) splints and wrapping discontinuous fiber-reinforced polymer (FRP) strips around the sides of the masonry column. The effects of the type of strengthening material (ECC splints or FRP strips), the thickness of the ECC splint, and the FRP strip strengthening area ratio on the failure mode, peak load, strain behavior, and energy dissipation of the specimens were analyzed and discussed in this experimental study. Under the appropriate parameters, the best strengthening effect was observed for the compositely strengthened masonry columns. In particular, the ductility, bearing capacity, and energy dissipation of masonry columns can be significantly improved by utilizing FRP with lower tensile strength, a higher FRP strip strengthening area ratio and a thicker ECC splint. Based on the existing computational models and code calculation methods for masonry columns strengthened with ECC splints and FRP strips, a formula for calculating the compressive bearing capacity of strengthened masonry columns was derived. The error between all the calculated and the measured results was less than 7.1%.
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来源期刊
Advances in Structural Engineering
Advances in Structural Engineering 工程技术-工程:土木
CiteScore
5.00
自引率
11.50%
发文量
230
审稿时长
2.3 months
期刊介绍: Advances in Structural Engineering was established in 1997 and has become one of the major peer-reviewed journals in the field of structural engineering. To better fulfil the mission of the journal, we have recently decided to launch two new features for the journal: (a) invited review papers providing an in-depth exposition of a topic of significant current interest; (b) short papers reporting truly new technologies in structural engineering.
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