| Title |
Flexural Behaviors of Composit Spancrete Slab under Axial Load |
| Keywords |
hollow core slab ; topping concrete ; axial force ; bending force ; strain-compatibility method |
| Abstract |
Recently, many engineers have used Hollow Core Slab(HCS) system on buildings. However, they couldn't apply this system to underground level, because the axial force effect hasn't yet been clearly investigated. This paper presents the test results for structural behaviors of composit spancrete slab as HCS under axial and bending force. Variables are the thickness of topping concrete and the magnitude of axial forces. The thicknesses are 100mm and 150mm. The axial forces are 0kN, 911.4kN, 1313.2kN, 1640.5kN. Test results showed that composit spancrete slab system has more strength capacity as the axial forces are increaser. This paper also evaluate the strength capacity using the section analysis by strain-compatibility method. Analytical results showed that stresses of spancrete and topping concrete, especially at the ends of beam, have much effect on design loads. Maximum service loads for tested specimens are proposed by allowable stress. From these studies, it's cleared that test specimen has enough strength capacity to be applied to the underground structural system. |