[1]曾翔超,余红发.钢筋碱式硫酸镁水泥混凝土梁抗弯性能试验研究[J].哈尔滨工程大学学报,2018,39(12):1933-1940.[doi:10.11990/jheu.201705026]
 ZENG Xiangchao,YU Hongfa.Flexural performance of steel-reinforced basic magnesium sulfate cement concrete beams[J].hebgcdxxb,2018,39(12):1933-1940.[doi:10.11990/jheu.201705026]
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钢筋碱式硫酸镁水泥混凝土梁抗弯性能试验研究(/HTML)
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《哈尔滨工程大学学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
39
期数:
2018年12期
页码:
1933-1940
栏目:
出版日期:
2018-12-05

文章信息/Info

Title:
Flexural performance of steel-reinforced basic magnesium sulfate cement concrete beams
作者:
曾翔超 余红发
南京航空航天大学 土木工程系, 江苏 南京 210016
Author(s):
ZENG Xiangchao YU Hongfa
Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
关键词:
碱式硫酸镁水泥混凝土弯曲延性破坏模式极限承载力挠度最大裂缝宽度
分类号:
TU528
DOI:
10.11990/jheu.201705026
文献标志码:
A
摘要:
为了探讨碱式硫酸镁水泥混凝土梁受弯状态下的力学性能与普通混凝土梁的异同,本文通过对16根不同配筋率、不同强度等级的碱式硫酸镁水泥混凝土梁进行抗弯试验,研究其正截面受力全过程和破坏形态。试验结果表明:平截面假定仍然适用;碱式硫酸镁水泥混凝土梁的破坏形态及承载力-挠度曲线与普通硅酸盐混凝土梁相似;碱式硫酸镁水泥混凝土梁开裂弯矩比普通混凝土梁高约20%;本文的碱式硫酸镁水泥混凝土梁抗弯承载力计算模型,考虑了受拉区混凝土的贡献,按构件整体截面在受荷过程中抗弯性能的降低来考虑梁的承载力;最大裂缝宽度计算公式需将现行计算公式乘以修正系数1.5,挠度计算公式应乘以1.1的修正系数。碱式硫酸镁水泥混凝土可代替普通混凝土用于梁正截面抗弯。

参考文献/References:

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[2] RUNCEVSKI T, WU Chengyou, YU Hongfa, et al. Structural characterization of a new magnesium oxysulfate hydrate cement phase and its surface reactions with atmospheric carbon dioxide[J]. Journal of the American ceramic society, 2013, 96(11):3609-3616.
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[4] 吴成友. 碱式硫酸镁水泥的基本理论及其在土木工程中的应用技术研究[D]. 西宁:中国科学院研究生院(青海盐湖研究所), 2014:147-151.WU Chengyou. Fundamental theory and civil engineering application of basic magnesium sulfate cement[D]. Xining:Graduate School of Chinese Academy of Sciences (Qinghai Salt Lake Research Institute), 2014:147-151.
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相似文献/References:

[1]曾翔超,余红发,吴成友.碱式硫酸镁水泥混凝土梁剪切破坏的试验研究[J].哈尔滨工程大学学报,2018,39(07):1198.[doi:10.11990/jheu.201612073]
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备注/Memo

备注/Memo:
收稿日期:2016-3-30。
基金项目:国家自然科学基金项目(21276264);江苏省优势学科资助项目(PAPD).
作者简介:曾翔超(1977-),男,博士研究生;余红发(1964-),男,教授,博士生导师.
通讯作者:余红发,E-mail:yuhongfa@nuaa.edu.cn.
更新日期/Last Update: 2018-12-01