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原文传递 A RATIONAL APPROACH FOR THE ANALYSIS AND DESIGN OF JOINTED PLAIN CONCRETE PAVEMENT WITH NON-STANDARD DIMENSIONS

题名：	A RATIONAL APPROACH FOR THE ANALYSIS AND DESIGN OF JOINTED PLAIN CONCRETE PAVEMENT WITH NON-STANDARD DIMENSIONS
正文语种：	eng
作者：	SWATI ROY MAITRA;ATASI DAS
作者单位：	Ranbir & Chitra Gupta School of Infrastructure Design and Management Indian Institute of Technology Kharagpur;GR Infraprojects Limited
摘要：	In Jointed Plain Concrete Pavement (JPCP), joints are provided in transverse and longitudinal directions by saw-cutting the slab up to 1/3rd its depth to form rectangular slab panels. In India, the standard panel size for JPCP on highways is 3.5 m × 4.5 m. The 3.5 m width of JPCP is provided considering the lane width. The lane markings are thus coinciding with the saw-cutting of longitudinal joints. Some multi-lane highways, however, are constructed to have 8.5 m to 9.0 m wide carriageway with a single longitudinal joint at the centre. The width of the panel thus becomes 4.25 m to 4.5 m. So, in this case, the lane markings are not coinciding with the longitudinal joint. This results in a larger proportion of traffic being close to the central longitudinal joint as compared to the situation where the lane markings match with the longitudinal joints for pavements with panel size of 3.5 m × 4.5 m. In India, the design of rigid pavement is generally done considering a finite element based approach as given in IRC:58-2015, where stress charts and equations are provided to determine the critical stresses. However, these stress charts and equation have been developed only for a panel size of 3.5 m × 4.5 m, thus cannot be used for other panel sizes. Therefore, a separate finite element analysis is required to estimate the critical stresses for pavements with non-standard dimensions. In the present work, a rational approach is considered for the design of JPCP of non-standard dimensions. A three-dimensional finite element model has been developed for the analysis of JPCP with panel dimension of 4.5 m × 4.5 m and the critical stresses are estimated. A traffic survey was carried out on a similar road to assess the proportion of traffic near the central longitudinal joint, based on which the design traffic is estimated. Considering this design traffic and the critical stresses obtained from the finite element analysis, the design of pavement has been done. The approach has been utilized for design of rigid pavement on a road project in India.
出版年：	2022
期刊名称：	Indian Highways
卷：	50
期：	9
页码：	28-35