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城市建设理论研究—市政工程, 2022 GB50017—2003《钢结构设计规范》给出的工字梁抗剪极限承载力计算公式考虑了翼缘对腹板的约束作用，未考虑翼缘自身刚度对抗剪极限承载力的贡献，因而得到结果较为保守。论文针对规范中存在的不足，对高强钢焊接工字梁抗剪极限承载力进行有限元分析，在现有可以考虑翼缘自身刚度对抗剪极限承载力贡献计算式的基础上，根据有限元计算结果建议了高强钢焊接工字梁抗剪极限承载力的计算式。
忻 仕超, 程 海宇, 郭 鹏
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Jianzhu Gangjiegou Jinzhan, 2021 为探究Q690高强钢梁火灾后的破坏模式和承载性能,对6根经历650℃高温加载后自然冷却的Q690高强钢梁进行了试验研究。试验结果表明,残余变形对火灾后Q690钢梁的破坏模式和极限承载力均有显著影响;Q690高强钢加热到650℃后自然冷却,其材料性能几乎无变化,仅屈服强度略有降低。在试验的基础上,建立有限元模型并完成校准,进行大规模参数分析,拟合得到火灾后高强钢梁的整体失稳承载力计算公式。拟合公式与规范计算结果和试验数据的对比表明,提出的公式具有足够的精度、合理性和安全性。
郭小农, 宗绍晗, 于孟同, 徐航
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Jianzhu Gangjiegou Jinzhan, 2022 相比于《钢结构设计规范》（GB 50017—2003），《钢结构设计标准》（GB 50017—2017）取得了较大的进步，允许板件先于构件发生屈曲，并利用了板件屈曲后强度。GB 50017—2017对轴心受压构件、受弯构件和单向压弯构件均给出了屈曲后强度计算公式，但对双向压弯构件却未给出计算公式。分析了已有的高强钢压弯构件屈曲后强度计算方法，基于GB 50017—2017中的压弯构件稳定承载力计算公式，提出了双向压弯构件屈曲后强度计算公式 ...
申红侠, 林啟邦, 程浩
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Jianzhu Gangjiegou Jinzhan, 2017 高强度钢材被越来越多地应用于现代钢结构,例如高层建筑、大跨度桥梁和输电塔中,但构件的稳定问题成为限制其应用的主要因素。详细介绍了国内外学者在高强钢构件稳定性能研究方面取得的最新成果,包括高强钢材料常温静载一次拉伸的力学性能、残余应力测试,以及构件的局部稳定、整体稳定、局部和整体稳定的相关性。同时,指出已有研究存在的问题,为高强钢结构设计及进一步的研究提供参考。
申红侠, 任豪杰
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Research status and progress of hydrogen embrittlement of hydrogen pipelines [PDF]
, 2023 Hydrogen transportation through pipelines has extremely high economic value in realizing the development of the hydrogen energy industry and promoting efficient energy utilization.
Hongliang MING, Jianqiu WANG, Jianwei DU
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Effect of hot forming temperature on the microstructure and mechanical properties of high strength square tubes [PDF]
, 2016 To overcome the challenge of traditional roll forming process and equipment on high strength square tubes at room temperature,hot roll forming process using local induction heating was proposed to produce high strength square tubes.A series of tests ...
HAN Jing-tao +3 more
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Surface roughness rolling-transfer regularity and prediction model of high strength steel strips [PDF]
, 2016 The surface roughness rolling-transfer and change law of high strength steel strips and the surface roughness change law of working rolls are studied through a batch of field experiments and analyzed by a statistical method to find out a control method ...
LI Rui +4 more
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Effect of local induction heating on secondary roll-forming of high strength square tubes [PDF]
, 2016 The formability of corners was improved by heating the corner area of high strength square tubes with induction coils.Under the premise of not impacting the undeformed zone,we obtained the ideal sectional dimension,microstructure and properties of ...
CHEN Qiang +5 more
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Static recrystallization behavior of the high strength steel 300 M [PDF]
, 2016 To research the static recrystallization behavior of high strength steel 300 M,single/double-pass hot compression tests of 300 M steel were carried out using Gleeble-3800 thermal simulation experiment equipment.
SUN Yan, ZHANG Yan-shu, ZHAO Li-hua
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Jianzhu Gangjiegou Jinzhan, 2022 开展高温后水冷Q690高强钢的材性试验研究，明确高温对Q690高强钢力学性能的影响规律。在考虑材料非线性和几何非线性的基础上，将高温后水冷Q690高强钢的材性引入数值分析模型，在ABAQUS有限元软件中实现考虑屈曲后性能的Q690高强钢板梁的火灾后剩余承载性能分析。研究结果表明：暴露温度700 ℃为Q690高强钢力学性能变化的分界点。随着暴露温度的升高，fy和fu都表现出先减小后增大的规律。暴露温度对Q690高强钢弹性模量的影响较小。当暴露温度为800 ℃和900 ℃时 ...
华建民 +5 more
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