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A cast-in-place cable trough system

A cable trough and cast-in-place technology, which is applied in the installation of cables, cables in underground pipelines, and cables in ground conduits, etc., can solve problems such as poor construction quality, muddying of roadbed, water accumulation in cable troughs, etc., and achieve Guarantee the service life and railway operation safety, improve drainage capacity, and ensure the effect of construction quality

Active Publication Date: 2021-08-13
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing cable tray still has some problems during service
For example, rainwater infiltrates the foundation bed through the gaps, causing water accumulation in the cable trench, soaking the foundation bed, and even causing problems such as the instability of the roadbed slope
At the same time, the existence of the cable trough will affect the drainage of the subgrade bed and form a water blocking effect, which leads to an increase in the water content in the subgrade bed, causing problems such as subgrade frost heave
In addition, the drainage hole of the cable trough often encounters problems such as poor construction quality, which leads to poor drainage of the subgrade bed, which soaks the subgrade bed, which in turn leads to the occurrence of diseases such as subgrade muddying and subgrade frost heave.

Method used

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  • A cast-in-place cable trough system
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  • A cast-in-place cable trough system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment, the foundation pad 110 is a porous and water-permeable material. Preferably, the foundation cushion layer 110 is formed by cast-in-place permeable concrete to form a water-permeable cushion layer. The permeable cushion can ensure that the accumulated water seeping down the cable trough and the accumulated water on the surface of the subgrade bed are discharged in time. At the same time, the permeable cushion helps the circulation of air, ensuring a dry service environment for the subgrade bed and cable trough, thereby reducing the later operation and maintenance costs.

[0039]In this embodiment, the protective block 130 adopts cast-in-place concrete shoulders. As shown in FIG. 2 , the cast-in-place concrete shoulder is laid along the direction of the railway line, and is arranged on the side of the cable trench 120 away from the railway subgrade 10 . The height of the cast-in-place concrete shoulder is set to be equal to the height of the cable du...

Embodiment 2

[0043] In this embodiment, the foundation cushion 210 is the same as that in Embodiment 1, and the permeable cushion is formed by cast-in-place permeable concrete.

[0044] The difference between the second embodiment and the first embodiment is that the protective stopper adopts the prefabricated stopper 230 . Such as image 3 As shown, the prefabricated stoppers 230 are evenly spaced along the direction of the railway line and arranged on the side of the cable duct 220 away from the railway subgrade 10 . The prefabricated block 230 is fixed on the foundation cushion 210 , and is preferably arranged at the junction of adjacent cable channels 220 . exist image 3 In the illustrated embodiment, a prefabricated blocking member 230 is provided every two cable slots 220 . The prefabricated stopper 230 can effectively constrain and fix the cable groove 220 .

[0045] Figure 4 The structure of a precast stop 230 is shown, which is a prefabricated part. Such as Figure 4 As s...

Embodiment 3

[0047] In this embodiment, the base cushion can also be poured with impermeable concrete (that is, ordinary concrete). Such as Figure 5 As shown, the base cushion 310 is an impermeable cushion formed by pouring impermeable concrete (ie ordinary concrete). At the same time, a number of horizontal drainage pipes 360 evenly spaced in the longitudinal direction are provided at the bottom of the foundation cushion 310 for laterally draining accumulated water in the foundation bed. The lateral drainage pipe 360 ​​is preferably a PVC pipe. The structure of the foundation cushion 310 can also ensure that the accumulated water infiltrated from the cable trough and the accumulated water on the surface of the subgrade bed are discharged in time. When the cable grooves 320 are laid, gaps are left between adjacent cable grooves 320 . Thus, surface water (such as rainwater) flows into the first storage tank and the second storage tank of the cast-in-place cable duct system 300 through t...

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PUM

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Abstract

The invention provides a cast-in-place cable trough system, comprising: a foundation cushion arranged on the surface of the railway bed, the foundation cushion extends along the direction of the railway line, and the bottom surface of the foundation cushion is configured to have a slope . The cable trough arranged on the foundation cushion, the cable trough includes three partitions spaced apart from each other and the cover plate arranged on the partition, the partition and the foundation cushion are integrally poured , a first accommodation groove and a second accommodation groove are respectively formed between the adjacent partitions; The side of a railway embankment.

Description

technical field [0001] The invention relates to the technical field of railway subgrade cable troughs, in particular to a cast-in-place cable trough system. Background technique [0002] In recent years, my country's railway technology has developed rapidly, especially the high-speed railway. During the operation of high-speed railways, in order to facilitate the maintenance and repair of high-speed railways and ensure operational safety, various cables are usually laid in cable troughs. As an important infrastructure, the cable tray is responsible for maintaining the normal power supply and communication of the line, and is the artery of the high-speed railway. [0003] At present, my country's high-speed railway subgrade cable troughs usually adopt the form of common communication signal troughs and separate power troughs. The cable troughs and cover plates are prefabricated with reinforced concrete materials and are all set on the road shoulders. [0004] However, exist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B2/00H02G9/06H02G9/04
CPCE01B2/00H02G9/04H02G9/06
Inventor 杜晓燕常凯马伟斌蔡德钩杨常所王志伟郭小雄赵鹏马超锋蒋函珂高宁
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI