Title:
Research on Effective Stresses of Cross-Tensioned Prestressed Concrete Pavement
Author(s):
Chaomei Meng, Liangcai Cai, Jianming Ling, Guanhu Wang, Yong Shen, and Hui Ye
Publication:
Materials Journal
Volume:
119
Issue:
3
Appears on pages(s):
149-160
Keywords:
analytical model; cross-tensioned prestressed concrete pavement (CTPCP); effective stresses; numerical simulation; pavement engineering
DOI:
10.14359/51734611
Date:
5/1/2022
Abstract:
Cross-tensioned prestressed concrete pavement (CTPCP) has good integration and anti-crack performance with a high bearing capacity. An approximate model considering the effects of the sliding layer is developed to predict the longitudinal prestress of CTPCP, in which a bilinear model is used to describe the performance of the sliding layer. Additionally, a numerical simulation model is also developed to verify and modify the analytical model. Furthermore, the influence on longitudinal prestress has been analyzed according to the modified analytical model. The results show that the performance of the sliding layer has significant influence on longitudinal stress. In the ending area, the longitudinal prestress increases gradually with the increase of prestressed strands. In other areas, the longitudinal stress remains unchanged when the frictional coefficient of the sliding layer is ignored, while it decreases gradually and exists at a minimal value at the pavement midpoint when the friction effect of the sliding layer is taken into consideration. The angle and spacing of cross-tensioned
prestressed strands also have significant influence on longitudinal prestress. Decreasing the angle and spacing can effectively improve the longitudinal prestress.
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