掺加不同类型纤维的超高性能混凝土（UHPC）板受弯性能试验研究

王平山; 肖传平; 薛伟辰; 吴学淑; 李进军; 李亚

doi:10.3724/j.gyjzG26012802

掺加不同类型纤维的超高性能混凝土（UHPC）板受弯性能试验研究

doi: 10.3724/j.gyjzG26012802

王平山^1,2,
肖传平³,
薛伟辰⁴,
吴学淑^1,2,
李进军^1,2,
李亚^3, ,

1. 华东建筑设计研究院有限公司, 上海 200011;
2. 上海装配式建筑技术集成工程技术研究中心, 上海 200011;
3. 上海师范大学建筑工程学院, 上海 201418;
4. 同济大学土木工程学院, 上海 200092

基金项目:

“十四五”国家重点研发计划（2022YFC3801400）。

详细信息

作者简介:
王平山，博士，教授级高级工程师，主要从事建筑工业化技术研究。

通讯作者:
李亚，博士，副教授，主要从事装配式混凝土结构研究，liya@shnu.edu.cn。

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出版历程
- 收稿日期: 2026-01-28
- 网络出版日期: 2026-04-11
- 刊出日期: 2026-02-20

Experimental Research on the Flexural Performance of Ultra-High Performance Concrete Slabs with Different Types of Fibers

1. East China Architectural Design and Research Institute Co., Ltd., Shanghai 200011, China;
2. Shanghai Engineering Research Center of Assembly Building Technology Integration, Shanghai 200011, China;
3. School of Civil Engineering, Shanghai Normal University, Shanghai 201418, China;
4. College of Civil Engineering, Tongji University, Shanghai 200092, China

摘要

摘要: 超高性能混凝土（UHPC）凭借其优异的力学性能和耐久性，在土木工程领域展现出巨大应用潜力。然而，其抗弯性能的关键影响因素——纤维类型与构件尺寸的协同作用机制尚未完全明确。现有研究多聚焦于单一变量，对板构件厚度与不同纤维类型的交互影响缺乏系统性研究。为此，开展了6块板的对比试验及应变分析，研究参数包括纤维类型［钢纤维、玻璃纤维、聚甲醛（POM）纤维］和板厚（30，50 mm）。试验结果表明：板厚对抗弯性能具有显著影响，厚度从30 mm增至50 mm可使开裂荷载和极限承载力提升3~4倍；在相同厚度条件下，不同纤维增强效果差异显著，钢纤维试件的承载力最高，玻璃纤维试件次之，POM纤维试件最低；板厚从30 mm增加至50 mm，钢纤维试件、玻璃纤维试件、PF-UHPC的延性分别提高了37.4%、3.4%、13.0%；在开裂前及约60%峰值荷载范围内跨中截面应变沿截面高度分布符合平截面假定，超过该阈值后非线性特征随纤维类型和厚度变化而显现。
- 超高性能混凝土 /
- 抗弯试验 /
- 抗弯承载力 /
- 纤维类型 /
- 板厚
Abstract: Ultra-High-Performance Concrete （UHPC） demonstrates significant application potential in civil engineering due to its excellent mechanical properties and durability. However， the synergistic mechanisms between fiber type and member size—key influencing factors for its flexural performance—are not yet fully understood. Existing research often focuses on single variables， lacking systematic investigation into the interactive effects of slab thickness and different fiber types. This paper presents a comparative experimental study on a total of six slabs， with research parameters including fiber type ［steel fiber， glass fiber， polyoxymethylene （POM） fiber］ and slab thickness （30 mm， 50 mm）. The test results indicated that slab thickness had a significant influence on flexural performance. Increasing the thickness from 30 mm to 50 mm enhanced the cracking load and ultimate bearing capacity by 3 to 4 times. Under the same thickness conditions， the reinforcement effects of different fibers varied markedly： specimens with steel fibers exhibited the highest bearing capacity， followed by those with glass fibers， while POM fiber specimens showed the lowest capacity. When the slab thickness increased from 30 mm to 50 mm， the ductility of the steel-fiber， glass-fiber， and POM-fiber specimens improved by 37.4%， 3.4%， and 13.0%， respectively. Strain analysis revealed that the plane-section assumption held before cracking and up to approximately 60% of the peak load. Beyond this threshold， nonlinear characteristics emerged， varying with fiber type and slab thickness.
- ultra-high-performance concrete /
- flexural test /
- flexural bearing capacity /
- types of fibers /
- slab thickness

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参考文献(17)

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