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Track base without broken stones, and building method

A ballastless track and subgrade technology, which is applied to roads, tracks, and infrastructure engineering, can solve the problems of large total settlement and post-construction settlement, difficulty in controlling post-construction settlement, and difficult control of differential settlement, so as to reduce maintenance The effect of small workload, small cumulative deformation, and small track deformation

Inactive Publication Date: 2007-02-21
铁道第二勘察设计院
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Problems solved by technology

For the traditional subgrade structure, when the high embankment is used, the total settlement and the post-construction settlement are large, and the differential settlement is difficult to control; while the low embankment structure is used, the impact of dynamics on the foundation is significant, and due to the impact of dynamics on the foundation, post-construction settlement is difficult to control

Method used

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  • Track base without broken stones, and building method
  • Track base without broken stones, and building method
  • Track base without broken stones, and building method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] refer to figure 1 , the ballastless track subgrade of the present invention is characterized in that it includes: reinforced concrete support piles 20, arranged at intervals along the longitudinal direction of the subgrade; reinforced concrete bearing plates 10, rigidly fixed on the upper end of the reinforced concrete support piles 20; It is built between the reinforced concrete bearing plate 10 and the subgrade foundation. The ballastless track subgrade of the present invention combines the respective characteristics of the sleeper-embedded ballastless track and the flexible filled layer slab-type ballastless track and the pile foundation structure, and fully utilizes the joint action principle of pile-slab-soil to meet the requirements of the ballastless track. It overcomes the shortcomings of large settlement and differential settlement of h...

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Abstract

The present invention discloses a cinderless railroad bed and its construction method. Said cinderless railroad bed has the characteristics of high strength, large rigidity, good stability and durability, and includes the following several portions: reinforced concrete supporting piles which are longitudinally spaced and arranged along the railroad bed; reinforced concrete bearing plates which are rigid fixedly connected in the upper end of said reinforced concrete supporting piles; and earth railroad bed which is filled between the reinforced concrete bearing plates and railroad bed foundation. Besides, said invention also provides the concrete steps of its construction method.

Description

technical field [0001] The invention relates to a high-speed 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. 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 the post-construction settlement are large, and the differential settlement is difficult to control; whil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B2/00E01B1/00E02D27/32
Inventor 魏永幸蒋关鲁朱颖李海光孙利琴颜华詹永祥
Owner 铁道第二勘察设计院
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