|本期目录/Table of Contents|

[1]黄福云,陈汉伦,杨芳芳,等.超高性能混凝土板受弯承载能力及计算方法试验研究[J].建筑科学与工程学报,2019,36(03):28-36.
　HUANG Fu-yun,CHEN Han-lun,YANG Fang-fang,et al.Experimental Study on Bending Capacity and Calculation Method of Ultra-high Performance Concrete Slab[J].Journal of Architecture and Civil Engineering,2019,36(03):28-36.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
36卷
期数:
2019年03期
页码:
28-36
栏目:
出版日期:
2019-05-22

文章信息/Info

Title:
Experimental Study on Bending Capacity and Calculation Method of Ultra-high Performance Concrete Slab
文章编号:
1673-2049(2019)03-0028-09
作者:
黄福云1,2,陈汉伦1,2,杨芳芳1,2,林 潮1,2,陈宝春1,2
(1. 福州大学 福建省土木工程多灾害防治重点实验室,福建 福州 350108; 2. 福州大学 土木工程学院,福建 福州 350108)
Author(s):
HUANG Fu-yun1,2, CHEN Han-lun1,2, YANG Fang-fang1,2, LIN Chao1,2, CHEN Bao-chun1,2
(1. Fujian Key Laboratory on Multi-disasters Prevention and Mitigation in Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China; 2. College of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China)
关键词:
超高性能混凝土;  纤维混凝土板;  受弯承载能力;  参数分析
Keywords:
ultra-high performance concrete;  fiber concrete slab;  bending bearing capacity;  parametric analysis
分类号:
TU473
DOI:
-
文献标志码:
A
摘要:
为推进超高性能混凝土(UHPC)板在中国实际工程中的应用,对无配筋的UHPC板和普通钢筋混凝土板进行了抗弯承载能力试验,分析了UHPC板的承载能力,并将其与同等级的钢筋混凝土板进行比较。结果表明:UHPC板的破坏过程可分为弹性、屈服和破坏3个阶段,可将板的最大裂缝宽度达0.1 mm时的荷载视为UHPC板的裂缝荷载; UHPC板的受弯破坏属于延性破坏,满足实际工程的需求; UHPC板弹性极限荷载是同等级钢筋混凝土盖板的220%,即UHPC板的抗裂能力强,在常规荷载作用下拥有更好的耐久性和适用性; 普通钢筋混凝土板承载破坏时,同等级的UHPC板依然可以正常工作且有较大承载能力富余,在承载能力方面UHPC板完全可以替代普通钢筋混凝土板; 同时,根据有限元参数分析结果,建议实际工程中UHPC板各参数按以下范围取值,钢纤维含量(质量分数)在1.5%～2.5%之间,厚度在30～50 mm之间,材料等级在U120～U160之间; 给出的计算无配筋UHPC板正截面受弯承载力简化计算公式具有较好的精度,可为工程实际与相关规范的制定提供一定参考。
Abstract:
To promote the practical application of ultra-high performance concrete(UHPC)slab in China, the bending bearing capacity of UHPC slab and ordinary reinforced concrete slab were tested, the bearing capacity of UHPC slab from several aspects was analyzed, and the results were compared with those of the same grade traditional one. The results indicate that the failure process of UHPC slab can be divided into elastic stage yield stage and failure stage, when the maximum crack is 0.1 mm, the load can be considered as the crack load. The bending failure process of UHPC slab is ductile failure, which meets the needs of practical engineering. The ultimate elastic load of UHPC slab is 220% of that of the same grade reinforced concrete slab, that is, the crack resistance and bearing capacity of UHPC slab are better than those of traditional one, and UHPC slab has better durability and applicability under the conventional load. The UHPC slab can still work normally when the ordinary reinforced concrete slab is destroyed, UHPC slab can completely replace the ordinary reinforced concrete slab in bearing capacity. The parameter analysis results from the finite element simulation indicate: it’s better to control the content of steel fiber(mass fraction)between 1.5%-2.5%, the thickness is between 30-50 mm, the materials grade is between U120-U160. The simplified formula for calculating the bending bearing capacity of the UHPC slab has a good precision, which can provide a reference for the engineering practice and the relevant specifications.

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备注/Memo

备注/Memo:
收稿日期:2018-10-09
基金项目:国家自然科学基金项目(51578161,U1305245); 福州市科技支持计划产学研项目(2018-G-63)
作者简介:黄福云(1979-),男,江西丰城人,研究员,工学博士,E-mail:huangfuyun@fzu.edu.cn。
更新日期/Last Update: 2019-05-23