Rock foundation existing high-speed railway embankment force balance assisting widening structure and construction method

A technology of rock foundation and force balance, applied in roads, buildings, tracks, etc., can solve problems such as difficult control, embankment side width deformation, etc., and achieve fast and convenient construction, facilitate popularization and application, and have good deformation control effects

Pending Publication Date: 2020-02-07
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: aim at the problems existing in the prior art, to provide a force-balanced side width structure and construction method of an existing high-speed railway embankment on a rock foundation, which can effectively solve the technical problem that the deformation of the side width of an existing high-speed railway embankment on a rock foundation is difficult to control

Method used

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  • Rock foundation existing high-speed railway embankment force balance assisting widening structure and construction method

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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, a kind of rock foundation of the present invention has high-speed railway embankment force balance side width structure, including:

[0040] Several grouting anchors 1 are used to be arranged at intervals in the rock foundation 01 outside the slope toe of the existing embankment 02. The grouting anchors 1 are set at intervals and depths according to force balance safety reserve requirements. Specifically, the The depth of the grouting bolt 1 inserted into the rock foundation 01 is equal to or greater than 4m;

[0041] Reinforced concrete frame structure 2, used to be arranged on the rock foundation 01 outside the slope toe of existing embankment 02, all the said grouting anchors 1 are connected to the bottom of said frame structure 2, said frame structure 2 includes bottom plate 21, two A vertical wall 22 and a top plate 23, the base plate 21, two vertical walls 22 and the top plate 23 surround a square pipe gallery structure;

[0042] Reinf...

Embodiment 2

[0048] Such as figure 1 As shown, a kind of rock foundation of the present invention has the construction method of high-speed railway embankment force-balanced side width structure, is used for constructing the existing high-speed railway embankment force-balanced side-width structure of rock foundation as described in embodiment 1, and the method comprises The following steps:

[0049] A. Leveling the rock foundation 01 foundation of the new high-speed railway;

[0050] B. Construction of all the grouting bolts 1 on the basis of the rock foundation 01, the grouting bolt 1 is embedded in the rock foundation 01, and its top is exposed on the surface of the rock foundation 01, and the exposed grouting bolt 1 The length is equal to or greater than 30cm;

[0051] C. Construction of the bottom plate 21 and the vertical wall 22 on the basis of the rock foundation 01, the exposed section of the grouting anchor rod 1 is fixedly connected with the reinforcement of the bottom plate 2...

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Abstract

The invention discloses a rock foundation existing high-speed railway embankment force balance assisting widening structure and a construction method. The assisting widening structure comprises a plurality of grouting anchor rods, a reinforced concrete frame structure, a reinforced concrete cantilever plate and a filling body, wherein the plurality of grouting anchor rods are used for being arranged in a rock foundation outside a slope foot of an existing embankment at intervals, the reinforced concrete frame structure is used for being arranged on the rock foundation outside the slope foot ofthe existing embankment, all the grouting anchor rods are connected to the bottom of the frame structure, one end of the reinforced concrete cantilever plate is connected to the top of the frame structure, the other end of the reinforced concrete cantilever plate is arranged on an existing embankment road shoulder structure, the top surface of the frame structure, the top surface of the cantilever plate and the top surface of the existing embankment are flush, and the filling body fills a cavity in the frame structure. By using the assisting widening structure, the high bearing capacity and anchoring force of the rock foundation are fully utilized, the weight of the frame structure and the internal filling body of the frame structure are utilized, pulling force generated by the grouting anchor rods is combined, and load acting on the cantilever plate by a train is resisted, so that adverse vertical deformation generated when the train passes through the cantilever plate can be avoided, and an existing high-speed railway is not influenced.

Description

technical field [0001] The invention relates to the field of high-speed railway engineering, in particular to a force-balanced side width structure and construction method of an existing high-speed railway embankment on a rock foundation. Background technique [0002] High-speed railways are developing rapidly in my country. At present, my country's large high-speed railway network has been basically completed. However, with the increasing local demand, the construction of high-speed railway branch networks is increasing. In the construction of high-speed railway branch networks, many new high-speed Railways need to run parallel to existing high-speed railways, or even need to be built adjacent to existing high-speed railways or need to widen existing high-speed railways. [0003] High-speed railways have strict requirements on deformation. Ballastless track high-speed railways are controlled at the millimeter level. Adding loads near existing high-speed railways will undoubt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B2/00
CPCE01B2/00
Inventor 姚裕春吴沛沛李宁袁碧玉胡杰
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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