原文传递
Analytical Modeling of the Interface between Lightly Roughened Hollowcore Slabs and Cast-In-Place Concrete Topping
| 题名： | Analytical Modeling of the Interface between Lightly Roughened Hollowcore Slabs and Cast-In-Place Concrete Topping |
| 其他题名： | American Concrete Institute.(2008)."Building code requirements for structural concrete(ACI 318-08)and commentary."ACI 318-08,Detroit. |
| 正文语种： | 英文 |
| 作者： | Aiham Adawi |
| 关键词： | Shear stress;Peel stress;Hollowcore slabs;Concrete topping;Push-off tests;Analytical modeling;Analysis and computation |
| 摘要： | Hollowcore slabs are commonly used in different types of structures. They usually include a 50-mm concrete topping. Structural engineers can use this topping to increase the slab load-carrying capacity. North American design standards relate the horizontal shear strength at the interface between hollowcore slabs and the concrete topping to the slab surface roughness. This paper presents the results of four push-off tests on hollowcore slabs supplied by two manufacturers and roughened using a conventional steel broom. The tested slabs sustained higher horizontal shear stresses than those specified by the design standards. Utilizing the data from the push-off tests, an analytical model was applied to evaluate the shear and peel stiffnesses, ks and kp, of the interface between hollowcore slabs and concrete topping. Structural engineers can utilize ks and kp values to model the composite action between hollowcore slabs from the two manufacturers and concrete topping. The analytical model was also used to evaluate the actual distribution of shear and peel stresses. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N04007 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001075 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 04 |
| 页码： | 51-59 |
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