原文传递
Analysis of out-of-plane performance of composite slab with precast concrete ribbed panels under a hanging load
| 题名： | Analysis of out-of-plane performance of composite slab with precast concrete ribbed panels under a hanging load |
| 正文语种： | 英文 |
| 作者： | Jingshu Zhang; Binyang Liu; Binbin Han; Yongsong Ni; Zhenlong Li |
| 关键词： | Composite slab with precast concrete ribbed panels; crack resistance; CSPRP; hanging load; shear behavior; stiffness. |
| 摘要： | When studying the out-of-plane performance of a composite slab, distributing the load on the top slab surface may overestimate the integrity of the combined interface and result in unsafe shear capacity because the load path is from the top surface to the bottom of the slab. It is difcult to observe cracking and crack distribution on the top surface of the slab during load application. In this paper, a static hanging load test of a two-span, two-way composite slab with precast concrete ribbed panels (CSPRP) was conducted. The hanging loading conditions were achieved by constructing loading frames and connecting the frames to a series of inverted U-shaped cables, which were suspended from the ribs of the precast concrete ribbed panels. After the cast-in-place concrete topping achieved its design strength, concrete blocks were placed in the loading frame to load the CSPRP. A comparative test of a two-span, two-way cast-in-place concrete slab was conducted at the same time, under the same conditions. The results showed that CSPRPs and castin-place concrete slabs exhibited comparable performance. The stiffness and crack resistance of CSPRPs were similar to those of cast-in-place concrete slabs. The mechanical properties of the combined interface of the CSPRP was compared with a common atplate composite slab. The results showed that the shear behavior on the combined interface of CSPRPs meets the shear strength requirements under serviceable working conditions better than common at-plate composite slabs. The combined interface of CSPRPs will not disengage under service loads. |
| 出版年： | 2019 |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 期： | 5 |
| 页码： | 43-57 |
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