Impact response of ultra-high performance fiber-reinforced concrete filled square double-skin steel tubular columns

被引：3

作者：

Li, Jie ^{[1
]}

Wang, Weiqiang ^{[2
]}

Wu, Chengqing ^{[3
]}

Liu, Zhongxian ^{[1
]}

Wu, Pengtao ^{[1
]}

机构：

[1] Tianjin Chengjian Univ, Tianjin Key Lab Civil Struct Protect & Reinforcem, Tianjin 300384, Peoples R China

[2] Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing 210098, Peoples R China

[3] Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia

来源：

STEEL AND COMPOSITE STRUCTURES | 2022年 / 42卷 / 03期

基金：

中国国家自然科学基金;

关键词：

drop hammer; Finite Element Analysis (FEA); steel tube; ultra-high performance fiber-reinforced concrete; MECHANICAL-PROPERTIES; NUMERICAL-SIMULATION; COMPRESSIVE BEHAVIOR; TENSILE BEHAVIOR; STRAIN-RATE; UHP-FRC; ORIENTATION; RESISTANCE; EXPOSURE; MEMBERS;

D O I：

10.12989/scs.2022.42.3.325

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper studies the lateral impact behavior of ultra-high performance fiber-reinforced concrete (UHPFRC) filled double-skin steel tubular (UHPFRCFDST) columns. The impact force, midspan deflection, and strain histories were recorded. Based on the test results, the influences of drop height, axial load, concrete type, and steel tube wall thickness on the impact resistance of UHPFRCFDST members were analyzed. LS-DYNA software was used to establish a finite element (FE) model of UHPFRC filled steel tubular members. The failure modes and histories of impact force and midspan deflection of specimens were obtained. The simulation results were compared to the test results, which demonstrated the accuracy of the finite element analysis (FEA) model. Finally, the effects of the steel tube thickness, impact energy, type of concrete and impact indenter shape, and void ratio on the lateral impact performances of the UHPFRCFDST columns were analyzed.

引用

页码：325 / 351

页数：27

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