Experimental and numerical investigations on large-scale concrete-filled double-steel-plate composite structures

Fan Jiansheng; Zhu Yaoyu; Cui Bing; Huang Liji; Spencer Billie F.

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Experimental and numerical investigations on large-scale concrete-filled double-steel-plate composite structures

机译：大型混凝土双钢板复合结构的实验性和数值研究

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Concrete-filled double-steel-plate composite (CDC) technology is commonly used in residential and bridge structures to achieve higher structural stiffness and strength. However, CDC technology has rarely been used in structures with large-scale sections, such as bridge towers and submarine tunnels before. Experimental and numerical studies were conducted to develop a novel large-scale CDC structure system and investigate its mechanical performance. Three full-scale four-point bending specimens were designed to represent the real compatible functioning and buckling performance of a CDC structure and were tested to failure. Significant events and failure modes of all specimens were distinguished and analyzed. Finite element analysis (FEA) models were established to simulate the performance of the specimens. Details of connectors and plate buckling were considered in the FEA models. Numerical load-displacement results were consistent with the experimental results, which demonstrated that the CDC structure specimens exhibited higher strength and stiffness compared to reinforced concrete (RC) specimens. The FEA models produced results that agreed well with the experimental load-slide results and strain distribution. The concrete and steel plate in the CDC specimen functioned compatibly before the ultimate state was reached. The plane assumption is applicable when designing the large-scale CDC structures. The pull-out resistance of the connectors can be designed according to the yield strength of the steel plate to guarantee the compatible functioning of the CDC structures. The FEA models and conclusions derived from the study can be used to aid the design and further investigations of the CDC structures.

机译：混凝土双钢板复合（CDC）技术通常用于住宅和桥梁结构，以实现更高的结构刚度和强度。然而，CDC技术很少用于具有大型部分的结构，例如桥梁塔和潜艇隧道。进行了实验和数值研究，以开发一种新型大规模CDC结构系统，并研究其机械性能。设计了三种全尺寸的四点弯曲标本，以表示CDC结构的实际兼容功能和屈曲性能，并测试失败。所有标本的显着事件和失效模式都是区分和分析。建立有限元分析（FEA）模型来模拟样本的性能。在FEA模型中考虑了连接器和印版屈曲的细节。数值载荷 - 位移结果与实验结果一致，这证明了与钢筋混凝土（RC）标本相比表现出更高的强度和刚度。 FEA模型产生的结果与实验载荷率和应变分布相同。 CDC标本中的混凝土和钢板在达到最终状态之前兼容。在设计大规模CDC结构时，平面假设适用。可以根据钢板的屈服强度设计连接器的拉出电阻，以保证CDC结构的兼容性。 FEA模型和来自研究的结论可用于帮助设计和进一步研究CDC结构。

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来源
《Engineering Structures》 |2021年第15期|111749.1-111749.19|共19页
作者
Fan Jiansheng; Zhu Yaoyu; Cui Bing; Huang Liji; Spencer Billie F.;
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作者单位

Tsinghua Univ Dept Civil Engn China Educ Minist Key Lab Civil Engn Safety & Durabil Beijing 100084 Peoples R China;

Tsinghua Univ Dept Civil Engn China Educ Minist Key Lab Civil Engn Safety & Durabil Beijing 100084 Peoples R China|Natl Engn Res Ctr Co Ltd China Commun Construct Co Highway Bridges Beijing 100088 Peoples R China;

China Highway Planning & Design Inst Consultants Beijing 100088 Peoples R China;

China Highway Planning & Design Inst Consultants Beijing 100088 Peoples R China;

Univ Illinois Dept Civil & Environm Engn Urbana IL 61801 USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
CDC structure; Full-scale tests; Numerical analysis; Compatible functioning; Buckling performance; Connectors;

机译：CDC结构;满量程测试;数值分析;兼容功能;屈曲性能;连接器;

Experimental and numerical investigations on large-scale concrete-filled double-steel-plate composite structures

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