Influence Analysis Of Temperature Stress Of Continuously Reinforced Concrete Pavement Related To Alignment

Continuously Reinforced Concrete Pavement (CRCP) is a kind of high performance concrete structure with enough continuously re-forcing steel in the longitudinal direction, and normally not set up the transverse joint in the construction. In the United States, Western Europe and other developed countries CRCP is as a major rigid pavement structure style, China's continuously reinforced concrete pavement research has just begun, particularly in highway construction, the development and application of CRCP will have broad prospect.In this paper, based on reading the related literature at home and abroad, analyzing CRCP plane-vertical curve temperature stress temperature by finite element, according to non-linear bond-slip relationship assumptions between the steel and concrete and to consider the impact of foundation friction, build the temperature stress ANSYS Finite element analysis model of the CRCP plane-vertical curve section. According to the "road line design specification" (JTG D20-2006) relating to the technical requirements of the linear design, using ANSYS finite element software calculate CRCP plane- vertical curve section of the stress field distribution, curve segment and straight-line segment linked to the location of the principal stress, analysis the plane curve radius, striking angle, curve length ,the affection law of temperature difference for curve line segment temperature stress. By the same token, using the ANSYS calculate variable -slope position of CRCP biconcave the two style vertical curve sections, and vertical curves and straight line connected the location of the principal stress, an analysis of its radius of the curve, vertical curve length, the foundation modulus, and so on for the impact of temperature stress. According to comparing with CRCP-vertical curves of the most disadvantaged sections of the location of temperature stress and the maximum temperature stress of the contour, so as to come up the affection of alignment for temperature stress. By comparing analysis: When the curve radius of the smaller vertical-time, and advanced the treatment measure to using the H beam at the center of curve of CRCP plane- vertical line segment or variable -slope position. Calculating can biggish reduction the curve of temperature stress, thereby reducing the damage of CRCP curve road segment.