Development of a Mechanistic-Empirical Structural Design Procedure for Continuously Reinforced Concrete Pavements

2004 ◽  
Vol 1896 (1) ◽  
pp. 46-56 ◽  
Author(s):  
Olga Selezneva ◽  
Chetana Rao ◽  
Michael I. Darter ◽  
Dan Zollinger ◽  
Lev Khazanovich
Keyword(s):  
Reinforced Concrete ◽  
Structural Design ◽  
Design Procedure ◽  
Concrete Pavements ◽  
Continuously Reinforced Concrete Pavements

Early-Age Behavior of Concrete Overlays on Continuously Reinforced Concrete Pavements

2003 ◽  
Vol 1823 (1) ◽  
pp. 80-92
Author(s):  
Seong-Min Kim ◽  
Patricia Kim Nelson ◽  
Mauricio Ruiz ◽  
Robert Otto Rasmussen ◽  
Dennis Turner
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
High Performance ◽  
Coefficient Of Thermal Expansion ◽  
Mechanistic Model ◽  
Early Age ◽  
Concrete Pavements ◽  
Concrete Overlays ◽  
Dimensional Finite Element ◽  
Continuously Reinforced Concrete Pavements

Delamination is the primary mode of distress in most bonded concrete overlay (BCO) projects. The objective of the present study was to develop and calibrate a mechanistic delamination model to properly predict the early-age behavior of concrete overlays bonded to continuously reinforced concrete pavements (CRCPs). An experimental BCO on a CRCP section was constructed to monitor its behavior, and the field data were used to calibrate the mechanistic models. Two- and three-dimensional finite element models of the BCO on CRCPs were developed and calibrated. The results from the numerical analysis matched the experimental results well. Equations to predict the interfacial stresses at the corner of the composite structure by use of the two-dimensional finite element model were also developed. A sensitivity analysis was performed to investigate the effects of overlay and CRCP parameters, such as elastic modulus, thickness, coefficient of thermal expansion, and percent reinforcement, on the shear and interfacial normal stresses. This mechanistic model has been incorporated into the HIPERBOND (High-Performance Bonded Concrete Overlays) software developed for FHWA.

scholarly journals Statistical analysis of the design procedure used in reinforced concrete pipes

2020 ◽  
Vol 13 (1) ◽  
pp. 69-86
Author(s):  
F. M. FLORESTA ◽  
C. S. VIEIRA ◽  
L. A. MENDES ◽  
D. L. N. F. AMORIM
Keyword(s):  
Reinforced Concrete ◽  
Aspect Ratio ◽  
Structural Design ◽  
Design Procedure ◽  
Design Procedures ◽  
Concrete Pipes ◽  
Actual Behaviour ◽  
Design Values ◽  
Present Aspect ◽  
Internal Forces

Abstract Structural design procedures are based on simplified hypotheses that attempt to approximate the actual behaviour. Depending on the adopted hypothesis, the design procedure may not satisfactorily describe the structural actual behaviour. Such condition occurs in the design of reinforced concrete pipes, where there are uncertainties related especially on the internal forces and the installation type of the pipe. Moreover, the main design hypothesis is that the cross section is plane and perpendicular to the deformed axis. Based on materials resistance principles it is known that this hypothesis is unsatisfactory to pipes with aspect ratio lower than ten. Note that the commercial reinforced concrete pipes usually present aspect ratio well below ten. In the light of the foregoing, the main objective of this paper is to analyse the accuracy of the design procedure for reinforced concrete pipes. Therefore, statistical processes were used to compare design values with experimental results. The comparisons in this paper showed that the design procedure results in oversized pipes.

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