Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Subgrade structure, subgrade system and design method of anti-bulge and wide subgrade adjacent to ballastless railway

A design method and system design technology, applied in design optimization/simulation, roads, buildings, etc., can solve problems such as increasing the amount of land used, and achieve the effect of saving construction land, bearing the overall load of the structure, and saving land

Active Publication Date: 2022-07-08
CHINA RAILWAY ERYUAN ENG GRP CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: in view of the prior art: in the construction of subgrade side width in uplifted rock and soil sections, uplift deformation control is required, and the embankment side slope significantly increases the amount of land used, to provide an anti-uplift side width subgrade adjacent to the ballastless railway The structure, roadbed system and design method can not only effectively control the uplift deformation of the roadbed side width structure, but also effectively bear the overall load of the structure and control the settlement deformation; save construction land and reduce ecological environment damage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Subgrade structure, subgrade system and design method of anti-bulge and wide subgrade adjacent to ballastless railway
  • Subgrade structure, subgrade system and design method of anti-bulge and wide subgrade adjacent to ballastless railway
  • Subgrade structure, subgrade system and design method of anti-bulge and wide subgrade adjacent to ballastless railway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] like Figure 1-4 As shown, a kind of anti-bulge and wide roadbed structure adjacent to the ballastless railway described in this embodiment includes:

[0074] The reinforcement piles 11 are arranged in a row along the line direction adjacent to the existing ballastless track subgrade 8; the support beams 2 are arranged on the top of the reinforcement piles 11;

[0075] Connecting steel bar 3, one end is anchored into the pile body, and one end is fixedly connected with the support beam 2;

[0076] The hopper 4 is arranged on the top of the support beam 2 in sections along the longitudinal direction of the line;

[0077] The light soil layer 5 and the soil filler layer 6 are filled in the storage tank 4 in sequence from bottom to top;

[0078] The drainage ditch 7 is arranged on the side of the hopper 4 away from the existing ballastless track roadbed 8 .

[0079] In the above scenario:

[0080] The length of the reinforcement piles 11 is not less than 1.2 times the ...

Embodiment 2

[0088] like Figure 1-4 As shown in the figure, a subgrade system using the anti-uplift and wide subgrade structure adjacent to the ballastless railway in this embodiment includes a foundation 9, the reinforcing piles 11 are arranged in the foundation 9, and the support beam 2 Set on the foundation 9, there is a gap between the hopper 4 between the adjacent support beams 2 and the foundation 9, and the inclined cantilever 41 is in contact with the slope of the existing ballastless track roadbed 8 combine.

[0089] In the subgrade system of the present invention, which adopts the anti-uplift subgrade structure close to the ballastless railway, the inclined cantilever 41 is fitted with the side slope of the existing ballastless track subgrade 8 to ensure the subgrade structure of the ballastless railway. To meet the basic use requirements, the support beam 2 is arranged on the foundation 9, that is, it can be used to transfer the load of the hopper 4 to the foundation 9 and the...

Embodiment 3

[0094] like Figure 1-5 As shown, a design method for the subgrade system, comprising the following steps:

[0095] ① Determine the structural weight W of the support beam 2 by the following formula z :

[0096] W z =BLHγ c

[0097] where W z is the structural weight of the supporting beam 2, unit kN; B is the width of the supporting beam 2, the unit is m; L is the length of the supporting beam 2, the unit is m; H is the height of the supporting beam 2, the unit is m; γ c is the weight of reinforced concrete, in kN / m 3 ;

[0098] ② Determine the structural weight W of the hopper 4 by the following formula u :

[0099]

[0100] where W u is the structural weight of the holding tank 4, in kN; b is the width of the holding tank 4, in m; h 1 is the thickness of the bottom plate of the holding tank 4, the unit is m; h is the height of the holding tank 4, the unit is m; h 2 is the cantilever thickness of the hopper 4, in m; m is the slope rate of the existing ballastl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of geotechnical engineering, in particular to an anti-bulge wide subgrade structure adjacent to a ballastless railway, a subgrade system and a design method. The cantilever is inclined, and can fit with the slope of the existing ballastless track roadbed. The bottom of the hopper is provided with a support beam, and the bottom of the support beam is connected with a reinforced pile assembly. The reinforced pile assembly includes a reinforced pile. The soil filling layer and the light soil layer are filled in sequence from the bottom. The anti-uplift and wide subgrade structure of the present invention is adjacent to the ballastless railway, which reduces the upper load of the reinforcement pile assembly, and the uplift force on the sidewall of the reinforcement pile can be transferred back to the lower foundation through the anchoring action of the pile body, which not only can effectively It can control the uplift deformation of the subgrade and the width of the structure, and can effectively bear the overall load of the structure and control the settlement and deformation; greatly save the construction land, and reduce the damage to the ecological environment.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a subgrade structure, a subgrade system and a design method adjacent to a ballastless railway with an anti-bulge and a sidewall. Background technique [0002] At present, when the new railway is introduced into the main line ballastless railway, it is not only necessary to solve the problem of deformation control of the existing ballastless railway caused by the construction of the subgrade width, but also to solve the problem of the uplift and deformation of the new railway that may be caused by the special geotechnical section. [0003] The uplift and deformation of geotechnical foundations are emerging geotechnical hotspots, such as frost heave of frozen soil, swelling of expansive rock (soil), arching of red-bed soft rocks, salt swelling of saline soil (rock) and other factors causing arching of foundations. These are all new problems faced by railway builders, which a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F30/20E01B1/00E01B2/00G06F119/14
CPCE01B1/002E01B2/00E01B2/006Y02A30/60
Inventor 陈伟志蒋关鲁李安洪周成谢荣强
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com