Subgrade structure and construction method thereof
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A technology of roadbed and road bed, which is applied in infrastructure engineering, roads, roads, etc., can solve problems such as road surface deformation, water damage aggravation, vertical structure impermeability, etc., and achieve the effect of reducing damage and delaying road surface aging
Active Publication Date: 2019-05-17
安徽鸿宇路桥工程有限公司
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Problems solved by technology
[0004] At present, drainage roads are generally pavements with permeable surface and impermeable base, or permeable surface and base, and impermeable cushion. This type of pavement can only solve the problem of pavement water accumulation to a certain extent, and has its own limitations such as drainage capacity. , impermeable vertical structure, aggravated water damage, etc.
At the same time, the temperature accumulation effect on the road surface is obvious, and the strong temperature-sensitive characteristics of asphalt materials make it age too quickly, which is likely to cause road deformation and other hazards
Method used
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Embodiment 1
[0043] Embodiment 1: as figure 1 As shown, a subgrade structure includes a lower road bed 1 and an upper road bed 2 arranged sequentially from bottom to top, the upper road bed 2 is a road surface structure, and side slopes 3 are arranged on both sides of the road bed.
[0044] like figure 1 As shown, the lower road bed 1 includes a base layer 11 , a waterproof layer 12 and a water storage layer 13 arranged in sequence from bottom to top. The base 11 is filled with sand and gravel with a particle size of 2-4 cm. The sand and gravel have less capillary water, are not easy to be frozen, are convenient to obtain materials, and have good water stability. The base 11 built in this way is not easy to subside.
[0045] The waterproof layer 12 includes a waterproof coiled material 121 and load-bearing bricks 122. In this embodiment, the load-bearing bricks 122 are solid bricks made of clay, and the load-bearing bricks 122 are neatly laid on the upper surface of the base layer 11 afte...
Embodiment 2
[0051] Example 2: Combining Figure 1-Figure 3 , a construction method for a subgrade structure, comprising the following steps:
[0052] Step S1: survey and map the terrain, calculate the total length of the road, remove the original surface debris, and divide the construction area;
[0053] Step S2: Excavate the earthwork and stonework of the subgrade, and use lime to spread out the sideline of the subgrade, the center line of the line and the sideline of the filling, and mark the height of loose paving so as to control the construction thickness;
[0054] Step S3: pouring the side slope 3 and opening a dark ditch 31, then pouring the base 11 and leveling;
[0055] Step S4: laying load-bearing bricks 122 and waterproof coiled material 121 to form waterproof layer 12;
[0056] Step S5: Stack the cut square bricks 131, arrange the stressed steel bars 15, bamboo tubes 135 and vertical steel bars 136, then fill the bamboo tubes 135 with basalt gravel with a particle size of 3-...
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Abstract
The invention relates to the field of road construction, and discloses a subgrade structure and a construction method thereof. The subgrade structure comprises a lower road bed, an upper road bed andside slopes, wherein the lower road bed comprises a base layer, a waterproof layer and a water storage layer arranged from bottom to top; the base layer is formed by being filled with sand gravel withthe particle size being 2-4 cm; the water storage layer comprises square bricks that are cut from waste bricks and piled up on a waterproof coiled material; the square bricks surround a plurality ofcavities; and the cavities are filled with fine sand filler made from crushed construction waste. According to the subgrade structure, the lower road bed is divided into multiple layers, and the baselayer and load-bearing bricks are used for supporting; the waterproof coiled material is used for preventing moisture from entering the base layer and destroying the structure of the base layer; the water storage layer utilizes the construction waste through the square bricks and the fine sand filler; the cavities have a water storage function; when the temperature is relatively high, the moisturein the cavities evaporates to remove heat, thereby reducing the temperature, and achieving the effect of delaying the aging of a road surface; and by adopting the subgrade structure and the construction method, the construction waste is recycled and the purposes of green backfilling and waste utilization are achieved.
Description
technical field [0001] The invention relates to the field of road construction, in particular to a roadbed structure and a construction method thereof. Background technique [0002] With the rapid advancement of urbanization in our country, a large amount of construction waste is produced, which not only takes up space, but also pollutes the environment. Common construction waste includes muck, waste concrete and bricks, etc. Due to the heterogeneity and quality of construction waste, it is difficult to effectively utilize waste. The common use is to crush construction waste and use it as filler, but the roadbed and road surface made of this kind of filler have low strength. [0003] The total length of roads in my country is the first in the world. Asphalt roads refer to various types of roads paved with road asphalt materials mixed with mineral materials. Ability to make the road smooth and less dusty, durable. Therefore, asphalt road is one of the most widely used advan...
Claims
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Application Information
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