Reduction of Structural Damage from the Thermal Expansion of Concrete Using Multifunctional Materials

Corresponding data set for Tran-SET Project No. 18STTAM01. Abstract of the final report is stated below for reference: "This study leveraged past successes in the analysis and design of shape memory alloy (SMA) components to address the issue of thermal expansion in concrete structures. Since the SMA used in the current work is relatively cheaper than other common SMAs (less than $50/lb compared to NiTi which is $200/lb due to difficulties in processing), it is anticipated that the findings of the study could be implemented in real infrastructures made of concrete, asphalt concrete, and other complex large infrastructure. Low-cost Fe-SMAs and other multifunctional materials can be considered as a replacement for components made of steel (e.g., in reinforced or plain jointed concrete pavements) to control distresses resulting from thermal expansion during seasonal/daily temperature change. This study conducted a series of finite element (FE) case studies of various configurations of concrete (blocks, slabs, and beams) with embedded, pre-strained SMA rods. This included developing new models to investigate temperature induced deflection in concrete slabs to analyze their curling behavior. It also included investigating the optimal position of the SMA rod and required rod radius. It is hoped that the results of this work could help to design smarter civil infrastructure incorporating multifunctional materials into established civil engineering materials."本数据集为Tran-SET项目编号18STTAM01的对应数据集。以下附上该项目最终报告的摘要以供参考： "本研究依托形状记忆合金（Shape Memory Alloy, SMA）组件分析与设计领域的既有成熟成果，旨在解决混凝土结构的热膨胀难题。本次研究所使用的形状记忆合金相较其他常见SMA成本更为低廉（单价低于50美元/磅，而镍钛（NiTi）合金因加工难度较大，单价高达200美元/磅），预计本研究成果可应用于混凝土、沥青混凝土及其他复杂大型基础设施工程。低成本铁基形状记忆合金（Fe-SMAs）与其他多功能材料可作为钢制组件的替代方案（例如应用于配筋或素缝混凝土路面），以抑制因季节或每日温度变化引发的热膨胀所导致的结构病害。本研究针对嵌入预应变形状记忆合金棒的各类混凝土结构（砌块、板件与梁式构件）开展了一系列有限元（Finite Element, FE）案例分析，其中涵盖开发新型模型以研究混凝土板的温度诱导挠度，进而分析其翘曲行为；同时还探究了形状记忆合金棒的最优布设位置与所需棒材半径。期望本研究成果可为将多功能材料融入现有土木工程材料体系、设计更具智能化的民用基础设施提供助力。"