01622446

Component

To ensure long term performance of Jointed-Plain Concrete Pavement (JPCP) subjected to heavy traffic, dowel bars are necessary for JPCP’s joint to keep high load transfer efficiency (LTE). Therefore, in this paper gap element in ABAQUS program was used to simulate the clearance of dowel-concrete. Based on numerical results the effects of dowel-concrete looseness on LTE behavior were analyzed and discussed. The results indicate that if there is no dowel looseness, LTE will remain constantly on a high level. As the looseness increases, it must be considered in the deflection ratio of LTE. When the looseness is larger than slab deflection induced by falling weight deflectometer (FWD), although measured LTE value exists, no load can be transferred through dowel in fact. Based on the numerical analysis the dowel looseness evaluation method based on FWD history data was proposed. The proposed method was validated with the measured LTE data of joints with the FWD.

This paper was sponsored by TRB committee AFH50 Standing Committee on Concrete Pavement Construction and Rehabilitation. Alternate title: Prediction Method of Dowel-Looseness in JPCP Based on Time Difference of FWD Sensors.

01618707

17-01105

English

13p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Figures; References

Deflection; Falling weight deflectometers; Load transfer; Pavement performance; Simulation

ABAQUS (Computer program)

Dowel looseness; Doweled joints (Pavements); Jointed plain concrete pavements; Load transfer efficiency

Highways; Pavements

Transportation Research Board Annual Meeting 2017 Paper #17-01105

TRIS, TRB, ATRI

Dec 8 2016 10:19AM