CN207079558U - High-speed railway subgrade settlement monitoring element protection - Google Patents
High-speed railway subgrade settlement monitoring element protection Download PDFInfo
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- CN207079558U CN207079558U CN201720621022.9U CN201720621022U CN207079558U CN 207079558 U CN207079558 U CN 207079558U CN 201720621022 U CN201720621022 U CN 201720621022U CN 207079558 U CN207079558 U CN 207079558U
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Abstract
The utility model discloses a kind of high-speed railway subgrade settlement monitoring element protection, solves the problems, such as that existing high-speed railway subgrade sedimentation plate monitoring is inaccurate and measurement vertical rod surrounding soil compaction quality can not ensure.Including foundation of road bed（1）Soil layer is filled with the following embankment first layer of bedding（5）, in foundation of road bed（1）On be provided with sedimentation plate（2）With settlement measurement vertical rod（3）, in settlement measurement vertical rod（3）On be socketed with PVC sleeve pipes（4）, in PVC sleeve pipes（4）On be socketed with protection steel pipe（8）, in compacting iron plate（6）Center be provided with protection pipe connecting hole（7）, protect steel pipe（8）Top with compacting iron plate（6）Center set protection pipe connecting hole（7）It is fixed together, protects steel pipe（8）Height be less than the following embankment first layer of bedding and fill soil layer（5）Compacted depth.The accuracy of high-speed railway subgrade sedimentation plate monitoring is improved, ensure that the construction quality of roadbed.
Description
Technical field
The present invention relates to a kind of high-speed railway subgrade settlement monitoring device, more particularly to a kind of high-speed railway subgrade sedimentation prison
Survey element protection and its distribution method.
Background technology
At present, China has begun to accelerate the construction of high-speed railway, and Develop Ballastless Track has been considered as China Express Railway and built
If the technological change that particularly a field depth is carved in terms of line facility.Ballastless track is right due to being limited by itself adjustment capability
The sedimentation and deformation of engineering proposes strict demand under line, therefore to realize that high-speed railway completely lays the target of ballastless track, road
The key technical problem that ballastless track has become High Speed Rail Projects construction is laid on base.And how to efficiently control roadbed work
Settlement issues are especially prominent afterwards.
High-speed railway proposes higher requirement to the ride comfort of track, and roadbed is one of railway project important
Part, the basis of track structure weight and train load is subject to, it is also most weak least stable in railway engineering
Link, the irregularity of roadbed physical dimension, the Geometric irregularity of track can be caused naturally, it is therefore desirable to which sub-rail foundation has higher
Stability and less permanent deformation, to ensure train high speed, safety, even running.Due to the special engineering properties of weak soil and
The characteristics of high-speed railway subgrade, in general, the stabilized soil pavement intractability of most section grounds, are all little, not into
For governing factor；It is the solidification problem under the conditions of sedimentation and deformation and its various treatment measures to the main bugbear that engineering is brought, institute
It is the principal element to be considered in Design of High-speed Railway with subgrade settlement problem on deformation.Railway bed compaction quality is to maintain line
Road stabilization and smooth-going, guarantee train energy high speed, the essential condition of safe operation, and the standard of control and detection compaction quality, side
Method and equipment, then it is the important measures for ensureing compaction quality.The high-speed railway subgrade geotechnological structure very strict as Deformation control
Thing is built, sinking deformation monitoring should be used as the important procedure in subgrade construction, through whole subgrade construction all the time.
Before roadbed this body construction, first have to carry out stiffening basic ground, then after treatment on the basis of placement in layers
The soil body.In order to monitor the sedimentation of foundation of road bed, sedimentation plate is set usually on foundation of road bed, survey is connect in sedimentation plate centre
Vertical rod is measured, the sedimentation of foundation of road bed is determined by monitoring the vertical displacement of measurement vertical rod.Existing foundation of road bed uses sedimentation plate
Carry out settlement monitoring process be：The first layer being compacted on foundation of road bed, which fills, excavates a pit body to basis on the soil body
Position, sedimentation plate and measuring is placed at design attitude and to pad 10 centimetres of sand bedding courses levelling after vertical rod connects, ensured when embedded
It is perpendicular to the ground to measure vertical rod, puts PVC protection pipes, then pit body is backfilled, by baby roller to returning after backfill
The body that bankets is compacted, and carries out settlement monitoring afterwards.In this process, because road roller is to the vibrations pressure of the backfill soil body in hole
It is real, the backfill soil body is produced lateral pressure, often result in the phenomenon that the measurement vertical rod being deleveled occurs tilting and shifted, have influence on
The accurate measurement of follow-up foundation of road bed sedimentation, and roll the soil body around measurement vertical rod with baby roller and do not ensure that
Its compaction quality.It is that will measure vertical rod before the second layer fills in addition, because roadbed filling is compacted by placement in layers
After spreading, PVC protection pipes are put, to protect the measurement vertical rod of spreading in roller compaction process to be extruded from the soil body, carry out second layer road
Base fills, and then rolls whole roadbed with large roller, due to being only cased with PVC protection pipes outside measurement vertical rod, in big machinery
In roller compaction process, PVC protection pipes is produced lateral displacement, cause the measurement vertical rod of spreading to tilt, cause settlement monitoring more
Add inaccuracy.
The content of the invention
The invention provides a kind of high-speed railway subgrade settlement monitoring element protection, solve high-speed railway subgrade and sink
Drop plate monitoring is inaccurate and measures the problem of vertical rod surrounding soil compaction quality can not ensure.
The present invention is that solve above-mentioned technical problem by the following technical programs：
A kind of high-speed railway subgrade settlement monitoring element protection, including foundation of road bed and the following embankment first layer of bedding
Soil layer is filled, sedimentation plate and settlement measurement vertical rod are provided with foundation of road bed, PVC sets are socketed with outside settlement measurement vertical rod
Pipe, is socketed with steel pillar outside PVC sleeve pipes, and the centre of compacting iron plate is provided with steel pillar connecting hole, the top of steel pillar
The protection pipe connecting hole set with compacting iron plate center is fixed together, and the height of steel pillar is less than the following embankment of bedding
First layer fills the compacted depth of soil layer.
The upper and lower surface of compacting iron plate is provided with anti-skid bulge, wedge shape is provided between compacting iron plate and protection steel pipe
Floor, wedge-shaped floor are that 90 degree of radians are laid at equal intervals on the lateral wall of steel pillar.
A kind of distribution method of high-speed railway subgrade settlement monitoring element protection, comprises the following steps：
The first step, foundation of road bed is constructed, the following soil layer of embankment first of bedding is filled on the foundation of road bed constructed and is rolled；
Second step, prepare appropriate sand, filled in the following embankment first layer of bedding and one is excavated at the design attitude on soil layer
Square metre pit body to foundation of road bed, ready sand is layered on pit body center, sedimentation plate is then placed on sand pad
On layer, connection settlement measurement vertical rod is simultaneously levelling, and PVC sleeve pipes are inserted in settlement measurement vertical rod, and keeps settlement measurement vertical rod
In the center of PVC sleeve pipes, the soil body of backfill PVC its vicinities；
3rd step, take one piece of square upper and lower surface to carry the compacting iron plate of anti-skid bulge, and be compacted the diagonal of iron plate
The both ends of line respectively process a screwed hole, process a protection pipe connecting hole in the center of compacting iron plate, connect in protection pipe
Connect welding one on hole and bore dia identical steel pillar is connected with protection pipe, wedge ribs are welded between compacting iron plate and steel pillar
Plate, wedge-shaped floor are that 90 degree of radians are laid at equal intervals along the lateral wall of steel pillar；The height of steel pillar be less than bedding with
Lower embankment first layer fills the compacted depth of soil layer；
4th step, with steel pillar under, PVC sleeve pipes are nested into steel pillar, and make pressure in upper mode by compacting iron plate
Real iron plate lies in the following embankment first layer of bedding and filled on the surface of soil layer, rolls roadbed with large roller, was rolling
Compacting iron plate is rolled in journey in the lump;
5th step, jack bolt is installed in screwed hole, and rotated with spanner, compacting iron plate is jacked up, then will pressure
Real iron plate and steel pillar are extracted from the following soil layer of embankment first of bedding of compacting, pay attention to keeping hole complete；
6th step, by settlement measurement vertical rod spreading, and be higher by 50 lis of the surface that the following embankment first layer of bedding fills soil layer
It is more than rice, while spreading PVC sleeve pipes, the mouth of pipe of PVC sleeve pipes will be slightly less than settlement measurement vertical rod, to measure, then be covered in PVC
Pipe is outer to put extensive protection pipe, and the lower end of extensive protection pipe is embedded in the following soil layer of embankment first of bedding of compacting 2-5 lis
Rice, then fills the following soil layer of embankment second of bedding and strikes off；
The steel pillar that 7th step, the band for making the 3rd step are compacted iron plate is nested into outside extensive protection pipe, makes compacting iron plate
The following embankment second layer constructing soil layer surface of bedding is lain in, it is then large-scale in the top clamping ring cap of extensive protection pipe, use
Road roller is rolled on the compacting iron plate on the outside of extensive protection pipe, and iron plate and steel pillar are compacted in roller compaction process relative to extension
Protection pipe is sunk；
8th step, by jack bolt by be compacted iron plate jacked up from the surface of the following soil layer of embankment second of bedding, then
Compacting iron plate is extracted from the following soil layer of embankment second of bedding of compacting, keeps hole complete；
9th step, the process for repeating the 6th step to the 8th step, are sequentially completed the compacting of remaining roadbed soil layer.
The present invention solve high-speed railway subgrade sedimentation plate on measuring staff surrounding soil in roller compaction process, the soil body extruding survey
Bar, subgrade settlement is easily caused to measure the problem of inaccurate, the measurement vertical rod surrounding soil also solved in addition on sedimentation plate grinds
Press leakiness, the problem of compaction quality can not ensure.Execute-in-place of the present invention is simple, substantially increases high-speed railway subgrade sedimentation
The accuracy of monitoring, it ensure that the construction quality of roadbed.
The present invention is suitable for use with settling plate and measurement bar carries out the roadbed of the Settlement Observation.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the invention being laid in when the following embankment first layer of bedding fills soil layer 5.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
A kind of high-speed railway subgrade settlement monitoring element protection, including foundation of road bed 1 and the following embankment first of bedding
Layer fills soil layer 5, and sedimentation plate 2 and settlement measurement vertical rod 3 are provided with foundation of road bed 1, is socketed with outside settlement measurement vertical rod 3
PVC sleeve pipes 4, steel pillar 8 is socketed with outside PVC sleeve pipes 4, steel pillar connecting hole 7, steel shield are provided with the center of compacting iron plate 6
The protection pipe connecting hole 7 that the top of pipe 8 is set with the center of compacting iron plate 6 is fixed together, and the height of steel pillar 8 is less than
The following embankment first layer of bedding fills the compacted depth of soil layer 5.
The upper and lower surface of compacting iron plate 6 is provided with anti-skid bulge 10, is provided between compacting iron plate 6 and steel pillar 8
Wedge-shaped floor 9, wedge-shaped floor 9 are that 90 degree of radians are laid at equal intervals on the lateral wall of steel pillar 8.
A kind of distribution method of high-speed railway subgrade settlement monitoring element protection, comprises the following steps：
The first step, foundation of road bed 1 is constructed, following the first soil layer of embankment 5 of bedding is filled on the foundation of road bed 1 constructed and is ground
Pressure；
Second step, prepare appropriate sand, filled in the following embankment first layer of bedding and one is excavated at the design attitude on soil layer 5
Square metre pit body to foundation of road bed 1, ready sand is layered on pit body center, sedimentation plate 2 is then placed on sand
On bed course, connection settlement measurement vertical rod 3 is simultaneously levelling, PVC sleeve pipes 4 is inserted in settlement measurement vertical rod 3, and make settlement measurement vertical rod
3 are maintained at the center of PVC sleeve pipes 4, backfill the soil body around PVC sleeve pipes 4；
3rd step, take one piece of square upper and lower surface to carry the compacting iron plate 6 of anti-skid bulge 10, and be compacted iron plate 6
Cornerwise both ends respectively process a screwed hole 11, and a protection pipe connecting hole 7 is processed in the center of compacting iron plate 6, in
One and the diameter identical steel pillar 8 of protection pipe connecting hole 7 are welded on protection pipe connecting hole 7, in compacting iron plate 6 and steel pillar 8
Between weld wedge-shaped floor 9, wedge-shaped floor 9 is that 90 degree of radians are laid at equal intervals along the lateral wall of steel pillar 8；Steel pillar 8
Height be less than the compacted depth that the following embankment first layer of bedding fills soil layer 5；
4th step, with steel pillar 8 under, PVC sleeve pipes 4 are nested into steel pillar 8 in upper mode by compacting iron plate 6, and
Make compacting iron plate 6 lie in the following embankment first layer of bedding to fill on the surface of soil layer 5, roadbed is rolled with large roller,
Compacting iron plate 6 is rolled in roller compaction process in the lump, now the anti-skid bulge 10 on surface then serves increase compacting iron plate 6 and taken turns with vibrations
With the frictional force of the soil body, prevent that be compacted iron plate 6 produces horizontal displacement because of soil body extruding steel pillar 8 and wedge-shaped floor 9, roadbed grinds
Without rolling the soil body around settlement measurement vertical rod 3 with baby roller again after the completion of pressure；
5th step, jack bolt 12 is installed in screwed hole 11, and rotated with spanner, compacting iron plate 6 jacked up, then
Compacting iron plate 6 and steel pillar 8 are extracted from following the first soil layer of embankment 5 of bedding of compacting, pay attention to keeping hole complete；
6th step, by the spreading of settlement measurement vertical rod 3, and be higher by the surface 50 that the following embankment first layer of bedding fills soil layer 5
More than centimetre, while spreading PVC sleeve pipes 4, the mouth of pipe of PVC sleeve pipes 4 will be slightly less than settlement measurement vertical rod 3, to measure, Ran Hou
Extensive protection pipe 14 is put outside PVC sleeve pipes 4, and the lower end of extensive protection pipe 14 is embedded in the following soil of embankment first of bedding of compacting
2-5 centimetres in layer 5, it can so prevent the lower end of extensive protection pipe 14 from producing horizontal shift, and extensive protection pipe 14 also functions to
The effect of the length of supplement steel pillar 8, then fills following the second soil layer of embankment 15 of bedding and strikes off；
The steel pillar 8 that 7th step, the band for making the 3rd step are compacted iron plate 6 is nested into outside extensive protection pipe 14, makes compacting
Iron plate 6 lies in the surface that the following embankment second layer of bedding fills soil layer 15, then in the top clamping ring of extensive protection pipe 14
Shape cap 13, rolled with large roller on the compacting iron plate 6 in the outside of extensive protection pipe 14, iron plate 6 is compacted in roller compaction process
Sink with steel pillar 8 relative to extensive protection pipe 14, during the compacting following embankment second layer of bedding fills soil layer 15, by
The following embankment first layer of bedding for being embedded into compacting in the bottom of extensive protection pipe 14 is filled in soil layer 5, makes extensive protection pipe
14 keep plumbness, so as to ensure that settlement measurement vertical rod 3 in soil layer compacting process it is unaffected；
8th step, by jack bolt 12 by be compacted iron plate 6 jacked up from the surface of following the second soil layer of embankment 15 of bedding,
Then compacting iron plate 6 is extracted from following the second soil layer of embankment 15 of bedding of compacting, keeps hole complete；
9th step, the process for repeating the 6th step to the 8th step, are sequentially completed the compacting of remaining roadbed soil layer.
Claims (2)
1. a kind of high-speed railway subgrade settlement monitoring element protection, including foundation of road bed（1）Embankment first following with bedding
Layer fills soil layer（5）, in foundation of road bed（1）On be provided with sedimentation plate（2）With settlement measurement vertical rod（3）, in settlement measurement vertical rod
（3）On be socketed with PVC sleeve pipes（4）, it is characterised in that in PVC sleeve pipes（4）On be socketed with steel pillar（8）, in compacting iron plate（6）
Centre be provided with steel pillar connecting hole（7）, steel pillar（8）Top with compacting iron plate（6）The protection pipe that center is set connects
Connect hole（7）It is fixed together, steel pillar（8）Height be less than the following embankment first layer of bedding and fill soil layer（5）Pressure
Real thickness.
2. a kind of high-speed railway subgrade settlement monitoring element protection according to claim 1, it is characterised in that pressing
Real iron plate（6）Upper and lower surface be provided with anti-skid bulge（10）, in compacting iron plate（6）With steel pillar（8）Between be provided with wedge shape
Floor（9）, wedge-shaped floor（9）It is in steel pillar（8）Lateral wall at equal intervals 90 degree of radians lay.
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| CN201720621022.9U CN207079558U (en) | 2017-05-31 | 2017-05-31 | High-speed railway subgrade settlement monitoring element protection |
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| CN201720621022.9U CN207079558U (en) | 2017-05-31 | 2017-05-31 | High-speed railway subgrade settlement monitoring element protection |
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