| T形板肋对预制带肋底板混凝土叠合板弯曲疲劳性能的影响 |
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| 引用本文： | 黄海林,祝明桥,曾垂军,吕伟荣.T形板肋对预制带肋底板混凝土叠合板弯曲疲劳性能的影响[J].重庆建筑大学学报,2016,38(2):11-20. |
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| 作者姓名： | 黄海林 祝明桥 曾垂军 吕伟荣 |
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| 作者单位： | 湖南科技大学 土木工程学院, 湖南 湘潭 411201,湖南科技大学 土木工程学院, 湖南 湘潭 411201,湖南科技大学 土木工程学院, 湖南 湘潭 411201,湖南科技大学 土木工程学院, 湖南 湘潭 411201 |
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| 基金项目： | 国家自然科学基金(51308207、51378202);湖南省自然科学基金(14JJ6031) |
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| 摘 要： | 为研究T形板肋对预制带肋底板混凝土叠合板弯曲疲劳性能的影响,对3块T形肋底板叠合板和1块整浇板进行弯曲疲劳性能对比试验,主要考察T形板肋与疲劳荷载幅值对试件疲劳破坏形态及疲劳损伤程度的影响,得到了在不同疲劳循环加载次数下的跨中动位移、混凝土应变、预应力筋应变、残余变形等,分析了在不同疲劳循环加载次数下的刚度退化情况、荷载-应变分布规律、裂缝分布规律及剩余承载力等。研究结果表明,经历200万次疲劳循环加载后,T形肋底板叠合板无明显的刚度和强度退化,增设T形板肋的叠合板能达到与整浇板相同的弯曲疲劳性能;T形肋底板叠合板正截面弯曲疲劳强度计算可采用普通预应力混凝土受弯构件正截面疲劳应力验算的4个假定,最终以此建立了其正截面弯曲疲劳强度验算方法。
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| 关 键 词： | 预制带肋底板混凝土叠合板 预制混凝土 预应力混凝土 T形板肋 弯曲疲劳试验 |
| 收稿时间： | 2015/9/30 0:00:00 |
Influence of T-type rib on flexural fatigue behavior of concrete composite slab with precast prestressed ribbed panel |
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| Huang Hailin,Zhu Mingqiao,Zeng Chuijun and Lyu Weirong.Influence of T-type rib on flexural fatigue behavior of concrete composite slab with precast prestressed ribbed panel[J].Journal of Chongqing Jianzhu University,2016,38(2):11-20. |
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| Authors: | Huang Hailin Zhu Mingqiao Zeng Chuijun and Lyu Weirong |
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| Affiliation: | College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, P. R. China,College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, P. R. China,College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, P. R. China and College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, P. R. China |
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| Abstract: | In order to investigate influence of T-type rib on flexural fatigue behavior of concrete composite slab with precast prestressed ribbed panel, experiment is conducted to study the concrete composite slab with precast prestressed T-type rib panel and cast-in-place slab. The factors influencing the fatigue failure pattern and fatigue damage, such as T-type rib and fatigue load parameter, are studied by fatigue tests. The dynamic deflection, strains of concrete and prestressed tendons, and residual deflection are measured. Stiffness degradation, strain distribution, crack distribution and residual bearing capacity are analyzed. Results show that composite slabs with precast prestressed T-type rib panel can achieve the same flexural fatigue behavior as cast-in-place slabs. Design formulas for normal section bending fatigue strength of concrete composite slab with precast prestressed ribbed panel are put forward with reference to the four assumptions of traditional prestressed concrete flexural member. |
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| Keywords: | composite slab with precast ribbed panel precast concrete prestressed concrete T-type rib flexural fatigue test |
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