Slag-free orbit reinforced concrete pile net structure roadbed and construction method thereof
A reinforced concrete, ballastless track technology, applied in roads, tracks, buildings, etc., can solve the problems affecting the development speed of high-speed railways, large-scale construction of high-speed railways, complex regional geological conditions, etc. The effect of reducing construction cost and reducing the intensity of maintenance and repair work
Active Publication Date: 2010-04-14
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology
[0004] my country's high-speed railway construction scale is large, the line is long, and the regional geological conditions are complex. If the bridge structure is used, the cost will be too high, which will seriously affect the development speed of high-speed railway
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[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] refer to figure 1 , the reinforced concrete pile network structure subgrade of ballastless track of the present invention, it comprises: reinforced concrete pile 20, longitudinally, laterally spaced arrangement along subgrade; Built on the reinforced cushion 10. The thickness of the reinforced cushion layer 10 is generally 40-50 cm, and its composition can usually adopt the following two typical configuration forms: refer to image 3 , the reinforced cushion 10 consists of a first layer of graded crushed stone layer 121, a first layer of geogrid layer 111, a second layer of graded crushed stone layer 122, a second layer of geogrid layer laid in sequence from bottom to top 112. The third layer is composed of graded gravel layer 123; refer to Figure 4 , the reinforced cushion 10 is composed of the first layer of graded gravel layer 121, the fir...
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The present invention discloses a lattice pile structure roadbed for ballastless track reinforcing steel concrete and the construction method thereof. The roadbed comprises reinforcing steel concretepiles (20) arranged transversely and vertically along the roadbed, a reinforcing cushion layer (10) laid above the reinforcing steel concrete piles (20), and a soil roadbed (30) filled and constructedabove the reinforcing cushion layer (10). The present invention takes full advantage of the common combined action principle of the piles, the net and the soil to meet the requirements of the strength and the settling deformation of the ballastless track, and to overcome the disadvantages that the settlement quantity and the differential settlement quantity of the high road embankment structure is large and the extent of the dynamic influence of the low road embankment structure is large, and the present invention has the advantages of strong bulking property, good stability, being solid anddurable, small track deformation, small accumulation deformation, etc., and is favorable to the high-speed driving; the maintenance workload can be greatly reduced, the intensity of the maintenance operation can be lowered, and the maintenance operation condition can be improved. The construction process is simple, the construction cost can be effectively reduced, and the present invention meets the requirement of the environmental protection, therefore, the present invention has wide application prospect.
Description
technical field [0001] The invention relates to a railway subgrade and a construction method thereof, in particular to a high-speed railway ballastless track subgrade and a construction method thereof. Background technique [0002] With the continuous increase of train speed, new requirements are put forward for the form of subgrade structure. In the past, ballastless tracks of high-speed railways were mostly laid in tunnels, elevated structures and bridges, and later gradually expanded to soil roadbeds. [0003] Since the high-speed railway puts forward new requirements for the high smoothness, stability, and durability of the line, there are strict restrictions on the total settlement, post-construction settlement and differential settlement of the subgrade foundation. For the traditional subgrade structure, when the high embankment is used, the total settlement and post-construction settlement are large, and the differential settlement is difficult to control; while the ...
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IPC IPC(8): E01B2/00E01B1/00
Inventor 魏永幸蒋关鲁朱颖李海光肖宏孙利琴
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD