400km-hour high-speed railway embankment structure suitable for Sichuan and Chongqing layer mudstone area

A red bed mudstone and railway technology, applied in the field of subgrade engineering, can solve the problems of fiber concrete cracking, rainwater accumulation, seepage, etc., and achieve the effect of easy control of filling quality, good viscosity and creep, and simple structure

Inactive Publication Date: 2020-09-01
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most high-speed railway foundations use fiber-reinforced concrete sealing layer to prevent rainwater or surface water from entering, but fiber-reinforced concrete is easy to crack, causing rainwater to accumulate and infiltrate

Method used

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  • 400km-hour high-speed railway embankment structure suitable for Sichuan and Chongqing layer mudstone area
  • 400km-hour high-speed railway embankment structure suitable for Sichuan and Chongqing layer mudstone area
  • 400km-hour high-speed railway embankment structure suitable for Sichuan and Chongqing layer mudstone area

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Embodiment

[0038] Such as figure 1 As shown, a kind of 400km per hour high-speed railway embankment structure suitable for the Sichuan-Chongqing red-bed mudstone area described in the present invention includes embankment body layer 3, subgrade bed bottom layer 2 and subgrade bed surface layer 1 filled in order from bottom to top, wherein, The foundation bed bottom layer 2 comprises described foundation bed lower bottom layer 22 and foundation bed bottom layer 21, and described foundation bed surface layer 1 comprises foundation bed lower surface layer 12 and foundation bed upper surface layer 11, and described embankment body layer 3, described foundation bed lower layer 22, described The bottom layer 21 of the foundation bed, the lower surface layer 12 of the foundation bed and the upper surface layer 11 of the foundation bed are filled in sequence.

[0039] The embankment body layer 3 is filled with red bed mudstone improved soil with a cement mixing ratio of 4%. After compacting the ...

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Abstract

The invention discloses a 400km-hour high-speed railway embankment structure suitable for a Sichuan and Chongqing layer mudstone area, which comprises an embankment body layer, a subgrade bed lower bottom layer, a subgrade bed upper bottom layer, a subgrade bed lower surface layer and a subgrade bed upper surface layer sequentially filled from bottom to top. The embankment body layer and the subgrade bed lower bottom layer are filled with red mudstone cement improved soil, the subgrade bed upper bottom layer is filled with filler A and filler B, the subgrade bed lower surface layer is filled with graded broken stone, and the subgrade bed upper surface layer is filled with asphalt concrete. The high-speed railway embankment structure is simple in structure and can meet the design requirement of a high-speed railway subgrade with the speed of 400 kilometers per hour.

Description

technical field [0001] The invention relates to the field of roadbed engineering, in particular to an embankment structure suitable for a 400km / h high-speed railway in the red bed mudstone area of ​​Sichuan and Chongqing. Background technique [0002] In recent years, the scale and technology of my country's high-speed rail have changed from "catching up" to "leading". Speed ​​has always been an important indicator in the transformation of railways. Mastering the core technology of 400km / h high-speed rail is of great significance for my country to consolidate the status of high-speed rail and realize high-speed rail technology going global. [0003] Red-bed mudstone is widely distributed in the Sichuan-Chongqing region of my country, and has the characteristics of easy weathering, easy disintegration, dehydration shrinkage, and water-immersion bearing capacity attenuation. With the construction of high-speed railways with a speed of 400 kilometers per hour in my country, th...

Claims

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Application Information

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IPC IPC(8): E01B2/00
CPCE01B2/00
Inventor 薛元付正道王智猛张东卿李安洪周波肖杭姜瑞雪刘菀茹肖朝乾冯子亮
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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