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Ballastless rail foundation bed structure and method for determining width of strip-shaped foundation thereof

A strip foundation and ballastless track technology, which is applied to tracks, roads, buildings, etc., can solve the problems of large project investment and complex construction process, and achieve the effects of simple calculation, high safety and stability, and improved accuracy

Pending Publication Date: 2020-05-15
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for determining the width of the ballastless track bed structure and its strip foundation width in view of the problems of complicated construction process and relatively large engineering investment in the expanded rock cutting bed structure existing in the prior art. It can effectively prevent the expansion of expansive rock from causing the base bed to arch, and the construction is convenient and the project cost is low

Method used

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  • Ballastless rail foundation bed structure and method for determining width of strip-shaped foundation thereof
  • Ballastless rail foundation bed structure and method for determining width of strip-shaped foundation thereof
  • Ballastless rail foundation bed structure and method for determining width of strip-shaped foundation thereof

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Embodiment 1

[0070] Such as figure 1 As shown, a ballastless track foundation bed structure described in this embodiment includes a foundation bed 2 and at least two strip foundations 5 arranged horizontally at intervals, and a fire breaker is arranged between adjacent strip foundations 5. An energy device 4, the energy dissipation device 4 is an elastic structural member, the top of the strip foundation 5 is connected with a support plate 3, and the top of the support plate 3 is connected with the bed 2.

[0071] On the basis of the above, in a further preferred manner, the strip foundation 5 is a structural member made of concrete.

[0072] The strip foundation 5 can adopt prefabricated or cast-in-place concrete,

[0073] Specifically, the support plate 3 is a structural member made of reinforced concrete,

[0074] The support plate 3 can be made of prefabricated or cast-in-place reinforced concrete,

[0075] Specifically, the horizontal width of the strip foundation 5 is greater than...

Embodiment 2

[0087] Such as figure 2 As shown, a method for determining the width of the strip foundation in the ballastless track bed structure described in this embodiment includes the following steps:

[0088] Determination of expansion force f of expansive rock p and allowable bearing capacity σ 0 ;

[0089] Draw up the strip foundation 5 height h j and said strip foundation 5 number n;

[0090] Calculate the resultant force F of the expansion force that the bed 2 is subjected to p and the gravity of the bed 2;

[0091] According to the expansion force f p Determine the strip foundation 5 width b j the maximum value;

[0092] According to the allowable bearing capacity σ 0 Determine the strip foundation 5 width b j the minimum value;

[0093] According to the strip foundation 5 width b j The maximum value and the strip foundation 5 width b j The minimum value to select the bar base 5 width.

[0094] A method for determining the width of the strip foundation used in the b...

Embodiment 3

[0133] Such as image 3 As shown, a system for determining the bar-shaped base width described in this embodiment is an electronic device 1 (such as a computer server with program execution function), which includes at least one processor 11, a power supply 14, and A memory 12 and an input-output interface 13 that are communicatively connected to the at least one processor 11; the memory 12 stores instructions that can be executed by the at least one processor 11, and the instructions are executed by the at least one processor 11 , so that the at least one processor 11 can execute the method described in any one of the foregoing embodiments.

[0134] The input and output interface 13 may include a display, a keyboard, a mouse, and a USB interface for inputting and outputting data.

[0135] The power supply 14 is used to provide electric energy for the electronic device 1 .

[0136] Those skilled in the art can understand that all or part of the steps for implementing the abo...

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Abstract

The invention relates to the field of high-speed railway roadbed engineering. The invention relates to a ballastless rail, in particular to a ballastless rail foundation bed structure and a strip foundation width determining method thereof. The ballastless rail foundation bed structure comprises a foundation bed and further comprises at least two strip-shaped foundations which are horizontally arranged at intervals, an energy dissipation device is arranged between every two adjacent strip-shaped foundations and is an elastic structural part, a supporting plate is connected to the tops of the strip-shaped foundations, and the foundation bed is connected to the top of the supporting plate. According to the ballastless rail foundation bed structure, the strip-shaped foundations and the energydissipation devices are arranged, the situation that the foundation bed arches upwards due to expansion of expansion rock can be effectively prevented, the structure only needs to be constructed in alayered mode from bottom to top, construction is convenient and fast, and the construction cost is low.

Description

technical field [0001] The invention relates to the field of high-speed railway embankment engineering, in particular to a ballastless track bed structure and a method for determining the width of a strip-shaped foundation. Background technique [0002] With the rapid development of my country's high-speed railway construction, more and more ballastless track high-speed railways pass through expansive rock areas. The expansion force of expansive rock is relatively large, and surface water infiltration will cause arching on the cutting bed, which will affect the smoothness of high-speed railway operation and endanger the safety of train operation. [0003] The invention patent with the application number 201710603423.6 discloses a ballastless track railway expansive rock cutting structure and construction method. The method proposes an anti-arching structure composed of prestressed anchor cables + anchor pull plates + pressure relief holes; [0004] The invention patent with...

Claims

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Application Information

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IPC IPC(8): E01B2/00
CPCE01B2/00
Inventor 张东卿薛元刘菀茹肖雄肖子卫刘强李斌肖朝乾张建文封志军代伟邱永平张涛张硕姜瑞雪李睿
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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