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Roadbed structrue for highway and railway and its construction method

A technology of road, railway and construction method, which is applied to the cohesive pavement paved on site, roads, roads and other directions, which can solve the problems affecting the speed of the railway, breaking the traffic, and breaking the roadbed, so as to reduce the loss of disasters, reduce maintenance, Effect of waterproof performance improvement

Inactive Publication Date: 2003-12-10
路福昌
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  • Abstract
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AI Technical Summary

Problems solved by technology

The railway embankment mainly composed of crushed stones also has the problem of waterproofing. In summer, it melts and sinks, and in winter, it freezes and heaves, which seriously affects the speed of the railway. Especially when floods come, the embankment will be washed away and the traffic will be broken frequently.

Method used

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  • Roadbed structrue for highway and railway and its construction method
  • Roadbed structrue for highway and railway and its construction method
  • Roadbed structrue for highway and railway and its construction method

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Embodiment Construction

[0022] The thickness of the plain soil compaction layer is 300-500mm, and its elevation, slope, flatness and vertical load all meet the design requirements; the vertical load of the plain soil compaction layer is 8T / m 2 Above, the longitudinal slope of earthwork is less than 1 / 100, and the transverse slope is less than 1 / 100.

[0023] The thickness of the reinforced concrete pavement layer is 250-300mm, and its elevation, slope, flatness and load all meet the design requirements; the collective load of the pavement reaches 100T / m 2 .

[0024] The length of the full-length steel bar that is arranged in the concrete layer to form a grid network is equivalent to the length and width of the road surface in the longitudinal direction and the transverse direction;

[0025] The grid net can be 300-600mm per grid 2 Composed of squares or rectangles, the steel grid is laid in the concrete layer at a height of 1 / 3 from the top surface of the plain soil compaction layer and 2 / 3 of the ...

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Abstract

The roadbed for highroad and railroad only is formed from compacted soil layer and reinforced concrete road surface layer fixedly connected on it, in which the compacted soil layer is the layer-to-layer compacted primary soil layer and the reinforced concrete road surface layer. In the concrete the grilled net reinforcing bars are set, so that said roadbed has good water-proofing property.

Description

technical field [0001] The invention belongs to roadbed structure and construction method thereof in road engineering. Background technique [0002] The subgrade construction of our country's existing highways, especially expressways, basically adopts the method of deep excavation and elevation, and then backfills after excavation, that is, digs out the original old soil of the existing foundation, and then cushions it layer by layer from bottom to top. Soil, lime soil, pebbles, flakes, sand-fixing, inorganic materials, etc., the top layer is asphalt surface or plain concrete layer, which constitutes a multi-layer structure roadbed, and expansion joints are also arranged on the road surface. The roadbed built in this way not only has high investment, long construction period, but also short service life. Its Achilles heel is poor waterproof performance of the roadbed. Because the original old soil is dug out, the original landform and the old soil shaped by natural settlemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/02E01C7/08
Inventor 路福昌
Owner 路福昌
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