Location: Home >> Research >> 正文

Qingzhou-Linmu Section of Changchun-Shenzhen Line of National Expressway Network


In order to reasonably resolve the contradiction between the urgent demand for highway construction land and the strict protection policy of land resources, based on the deep investigation and analysis of the advantages and disadvantages and diseases of existing rigid retaining walls, based on the theory of the full life cycle of the structure and the principle of lateral soil arching, through many ways including presetting the anchor plate, grouting anchor or anchor cable in the subgrade, to fully mobilize the bearing capacity of the subgrade compacted soil, and a variety of composite rigid retaining structures with horizontal reinforcement effects have been developed. Including pressure-dispersed retaining walls, anchored-gravity retaining walls, and reinforced cross-anchored retaining walls, etc. The theoretical analysis, field measurements, multi-scale model tests, and macro and meso numerical simulations verify that this type of retaining wall can not only effectively control the lateral displacement of the retaining wall by applying a horizontally stiffened body with prestressing force, so that the wall backfill is in an elastic equilibrium state, but also the structure itself has good deformation self-recovery and self-adjustment capacity of the structural bending moment, which significantly reduces the concentration of bending moments at the lower part of the retaining wall, and serves the purpose of optimizing the structural force, increasing the retaining height of the retaining wall, reducing the amount of materials, and reducing engineering costs.