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A municipal road and its construction method

A construction method and technology for municipal roads, applied in roads, roads, road repairs, etc., can solve problems such as uneven temperature deformation and temperature stress, fast surface heat dissipation, and short service life of roads

Active Publication Date: 2020-10-20
TIANJIN CONSTR ENG CO LTD OF CHINA RAILWAY FIRST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Usually in the prior art, in the process of many road constructions, the road is simply paved, and the concrete transported by the concrete mixer truck is directly dumped and poured on the road surface to form a surface layer. Before pouring, it is affected by the environment and the concrete itself. The hydration reaction produces a large amount of heat of hydration. Since the heat is gathered inside and is not easy to dissipate, and the surface dissipates heat quickly, a large temperature difference is formed between the interior and the surface of the concrete, resulting in uneven temperature deformation and temperature stress. Internal or surface cracks, often penetrating, detrimental cracks that shorten the life of the road

Method used

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  • A municipal road and its construction method
  • A municipal road and its construction method
  • A municipal road and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: a kind of municipal road construction method, such as figure 1 , 2 and 3, including the following steps:

[0053] Step 1: Positioning and setting out

[0054] First determine the route of the municipal road, and determine the center line of the road, one pile for each 18-meter section of the straight line, one pile for every 4 meters for the curved section, and the outline of the road is formed by the above-mentioned piles;

[0055] Step 2: Excavating roadbed trenches

[0056] Drive the excavator into the outline, dig out the soil and stones in the outline to form the roadbed groove, and use the bulldozer to flatten the raised part of the bottom of the roadbed groove, and then use the grader to level the bottom of the roadbed groove ;

[0057] Step 3: Rolling once

[0058] Light vibration rolling is performed on the bottom of the subgrade groove by a vibratory roller. The vibration frequency of the vibratory roller is 25~30Hz, the amplitude is 1.4~2.0...

Embodiment 2

[0079] Embodiment 2: a kind of municipal road construction method, the difference with embodiment 1 is, as Figure 4 with 5 As shown, slide rails 44 parallel to each other are arranged on both sides of the downward facing side at the top of the bracket 41, and a sun visor 45 is clamped between the two slide rails 44, and the two sides of the sun visor 45 are respectively connected to Two slide rails 44 are slidingly connected, and a rotating roller 46 is also arranged below the sliding rail 44, and the two ends of the rotating roller 46 are connected with the two ends bearings of the support 41 respectively. The length direction of the road is vertical, and its slide rail 44 is parallel to the length direction of the road. On the roller 46, a driving gear 461 and a driven gear 462 are arranged. , the driving rack 451 meshes with the driving gear 461, and a driving gear 47 is rotatably connected to the bottom of the bracket 41. The driving gear 47 and the driven gear 462 are l...

Embodiment 3

[0081] Embodiment 3: a kind of municipal road construction method, the difference with embodiment 2 is, as Image 6 with 7 Shown, metal mesh 5 is to be that the threaded steel pipe 51 of diameter 1.5cm and the reinforcing bar 52 that diameter is 0.5cm are connected by binding wire 53 to form, when being placed on lower layer 32, threaded steel pipe 51 is perpendicular to the length direction of road, Steel bar one 52 is parallel to the length direction of the road; in the process of the upper layer 31 pouring and maintenance, it is connected to one end of the threaded steel pipe 51 through the water pipe 62, and the other end is also connected to the water storage tank 6 through the water pipe 62. One end is connected to a water pump 61 to circulate the water in the water storage tank 6 in the threaded steel pipe 51. After the maintenance is completed, the water pipe 62 is removed, and then a steel bar matching the inner diameter of the threaded steel pipe 51 is pierced in the...

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Abstract

The invention discloses a municipal road and a construction method thereof, and belongs to the technical field of road construction, which aims at providing a municipal road construction method capable of reducing the temperature difference between concrete interior and surface layer after casting. The construction method adopts the technical scheme with the following steps of positioning and lofting, excavation of subgrade grooves, primary rolling, setting of a formwork, building of a sunshade shed, paving of a bedding layer, paving of a base layer, paving of a cotton layer, removal of the formwork, joint cutting, curing, and joint filling. The construction road has the advantages that the higher-quality road can be obtained, the service life is longer, and the construction method is suitable for constructing urban and rural roads.

Description

technical field [0001] The invention relates to road construction technology, in particular to a municipal road and a construction method thereof. Background technique [0002] Road construction materials include cement concrete, asphalt concrete, and sand and gravel materials. From the perspective of technical quality and performance of the road surface, cement concrete pavement is the best. It has a large bearing capacity, good resistance to oil erosion, small pavement resistance, and long service life. It is long, easy to maintain, and low in cost. Although the one-time investment is high, it has high comprehensive benefits and has been widely used by people. [0003] Because the cement concrete pavement has to withstand the repeated impact, vibration and friction of high-speed and high-load vehicles, and it has to withstand various harsh climates such as high temperature and heavy rain in summer, freezing and thawing cycles in winter, expansion stress caused by temperatu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/00E01C23/00
CPCE01C7/00E01C23/00
Inventor 迟敬来孙志刚张煜李连和姚锐李文明孙刚谭任军张元龙周立娜
Owner TIANJIN CONSTR ENG CO LTD OF CHINA RAILWAY FIRST GRP CO LTD
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