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Railway Lightweight Soil Side Wide Subgrade Structure

A light soil and railway technology, applied in infrastructure engineering, roads, excavation, etc., can solve the problems of additional settlement of existing roadbeds, large additional loads of railway roadbeds, etc., to reduce settlements, improve stability, and strengthen structural strength Effect

Active Publication Date: 2016-09-21
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional embankment side fill will generate a large additional load on the existing railway embankment, and if it is not handled properly, it will easily cause additional settlement of the existing embankment

Method used

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  • Railway Lightweight Soil Side Wide Subgrade Structure
  • Railway Lightweight Soil Side Wide Subgrade Structure
  • Railway Lightweight Soil Side Wide Subgrade Structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0026] Such as figure 1 As shown, the present invention provides a kind of railway light soil side wide embankment structure, comprising existing railway slope 1 and new side wide filling embankment 2, existing railway side slope 1 and newly built side wide filling embankment 2 Pouring with light soil layer 3. The contact surface between the light soil layer and the embankment filled with new side width is stepped, and the contact surface between the railway slope and the light soil layer is stepped. The lightweight soil used in the light soil layer 3 has a bulk density of 7-10kN / m3 and a compressive strength of 0.8-1.5MPa; its durability is the same as the life of the main project, and it does not contain harmful and flammable s...

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Abstract

The invention provides a light soil side wide roadbed structure for a railway. The light soil side wide roadbed structure comprises a conventional railway slope and a new side width filling road embankment, wherein light soil layers are poured between the conventional railway slope and the new side width filling road embankment; geogrids are arranged in the light soil layer and the side width filling road embankment; bottom layers of subgrade beds and surface layers of subgrade beds are sequentially paved on the conventional railway slope, the light soil layers, and the top surface of the new side width filling road embankment from bottom to top. The light soil side wide roadbed structure disclosed by the invention effectively reduces side filling loads, maintains the stability of a conventional road embankment, and reduces the sedimentation of new line foundations and the additional sedimentation of conventional lines.

Description

technical field [0001] The invention belongs to the technical field of railway construction, and in particular relates to a railway light soil side wide subgrade structure. Background technique [0002] When the second railway line is added or the new line is parallel to the existing line, in order to save land or to interconnect with the existing line, it is inevitable that the width of the existing roadbed will occur. Conventional railway existing track width technology mainly includes the following aspects: [0003] ①Foundation treatment: Treat the foundation of the new line so that the bearing capacity and settlement of the foundation can meet the requirements of the new line, and at the same time reduce the differential settlement from the existing line as much as possible. [0004] ② Existing line side filling: dig steps on the existing line slope, and then fill in layers to meet the subgrade bed and the embankment below. [0005] This method can meet the general roa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B2/00E02D17/20
CPCE01B2/006E01B2204/05E02D17/202
Inventor 孙红林顾湘生赵新益陈尚勇杭红星
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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