Analysis on track slab deformation and clamps mechanical characteristics during SCC pouring process
Addressing the issues of floating of track slabs and excessive forces on clamps during thepouring process of Self-Compacting Concrete (SCC), a Coupled Eulerian-Lagrangian (CEL) method is employed. This study establishes a fluid-solid coupling model for the pouring process of SCC in the CRTS Ⅲ slab track on straight sections. Theoretical exploration is conducted on the effects and mechanisms of various construction parameters on the SCC pouring process. A primary focus is placed on the impact of funnel height and number on filling rates, vertical and lateral displacements of track slabs, and clamps forces. Results indicate that increasing funnel height and number decreases pouring time and enhances construction efficiency, with a more pronounced effect for the latter. During single-hole pouring, the maximum vertical displacement of track slabs occurs in the middle of the slab edge, while during double-hole pouring, it is near the observation hole. Maximum lateral displacement oc-curs near the clamps. Greater funnel height results in higher SCC pressure on the track slabs, leadingto increased vertical and lateral displacements, as well as higher clamp forces. Notably, double-hole pouring results in greater final floating and lateral displacements of track slabs, along with higher clamp forces, compared to single-hole pouring.
slab tracknumerical simulationself-compacting concreteCEL methodfunnel heightfunnel number
万方数据
维普
