Concrete plaited block base layer of asphalt pavement

Abstract

The invention discloses a concrete plaited block base layer of an asphalt pavement, which comprises plaited block bodies, the side surfaces of the plaited block bodies are inclined surfaces, and the plurality of plaited block bodies establish an embedding and extruding relationship through the inclined surfaces to form a plaited block base layer plane structure with vertical interlocking and plane interlocking. According to the concrete plaited block base layer, concrete precast blocks meeting certain conditions are defined as braided blocks on the basis of the braiding technology, joints between the blocks can be kept in a tightly attached state by means of the overlying relation between the braided blocks, the joint load transfer capacity of the blocks is improved, the vertical interlocking and transverse interlocking relation can be established between adjacent base blocks, the road base layer is gradually diffused to all the woven blocks under the load action through the combined woven grid structure, an annular rewinding and laminating relation is shown around the centers of net openings of the woven blocks, and the road base layer has plate body stability and has practical significance in the aspects of enhancing the stability of the base layer plate body, preventing reflection cracks of a rigid-flexible composite road surface, prolonging the service life of the base layer, reducing life-cycle cost and the like.

Description

technical field [0001] The disclosure of the invention relates to the technical field of road engineering, in particular to a concrete braided block base for asphalt pavement. Background technique [0002] Block pavement is often used in the road field to improve the load transfer capacity of the joints to obtain board properties. The existing methods generally include the following: 1) Fill the joints with caulking sand, and use the extrusion and compaction of the caulking sand Obtain the arch effect diffusion load shape. The structure is seriously affected by the dispersion of caulking sand microstructure and filling density, wheel rolling, rain scouring, and road maintenance operations, resulting in low reliability of road quality and poor board performance. It is only used as a driving road surface. If an asphalt cover is used Serious reflection cracks will appear on the surface; 2) Dowel bars are installed at the joints of the blocks to improve the load transfer capaci...

AI Technical Summary

Problems solved by technology

The structure is seriously affected by the dispersion of caulking sand microstructure and filling density, wheel rolling, rain scouring, and road maintenance operations, resulting in low reliability of road quality and poor board performance. It is only used as a driving road surface. If an asphalt cover is used Serious reflection cracks will appear on the surface; 2) Dowel bars are installed at the joints of the blocks to improve the load transfer capacity of the joints. The construction period of this structure is long, maintenance is inconvenient, and the cost is high; Set the tension of the steel strands, and use the tension on both sides to keep the pressure on the joints of the blocks to ensure the linkage relationship between the blocks

The structure has complicated process, long construction period, and inconvenient maintenance; 4) The tongue-and-groove block and various interlocking blocks have vertical surfaces on the side of the block, and the load transfer capacity of the joint is poor, and the deflection difference between the blocks on both sides of the joint is large. The board is poor; if it is overlaid, there will be reflection cracks

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