Developing Curve of Displacement Factor for Determination of Additional Modulus of Subgrade Reaction on Nailed-slab Pavement System
Published at : 31 Jan 2017
Volume : IJtech
Vol 8, No 1 (2017)
DOI : https://doi.org/10.14716/ijtech.v8i1.1688
Cite this article as:
Puri, A., 2017. Developing Curve of Displacement Factor for Determination of Additional Modulus of Subgrade Reaction on Nailed-slab Pavement System. International Journal of Technology. Volume 8(1), pp. 124-133
Puri, A., 2017. Developing Curve of Displacement Factor for Determination of Additional Modulus of Subgrade Reaction on Nailed-slab Pavement System. International Journal of Technology. Volume 8(1), pp. 124-133
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| Anas Puri | Departement of Civil Engineering, Faculty of Engineering, Universitas Islam Riau, Pekanbaru 28284, Indonesia |
Abstract
The pavement of
the nailed-slab system
has been proposed as an alternative solution for addressing the rigid pavement
problem in soft soils. This system is used for developing a rigid pavement. The simple method of using an equivalent
modulus of subgrade reaction (kâ) in
nailed-slab system analysis was proposed by a previous
researcher. This modulus consists of the modulus of subgrade reaction from a plate load test (k) and an additional modulus of subgrade
reaction due to pile installing (k). The additional modulus of subgrade reaction has
been proposed by some authors. The displacement factor was used in determining
the additional modulus of subgrade reaction. This factor is difficult to
define. In this research, the prototype test of a nailed slab with single-pile
installation was conducted to learn the validation of the theory of the
additional modulus of subgrade reaction on a full-scale dimension. The
prototype was constructed on soft clay, and the connection between the pile and
slab was perfect monolithically. This system was loaded by centric load. A new
curve of the displacement factor is proposed. Calculated deflections based on this curve were compared to the observed deflection and
resulted in good agreement with the observation. Hence, it can
be used in preliminary design.
Displacement factor; Nailed-slab system; Rigid pavement; Soft clay; Subgrade modulus