CN107130627A - A kind of construction method of the observation pier based on GNSS system for monitoring displacement - Google Patents
A kind of construction method of the observation pier based on GNSS system for monitoring displacement Download PDFInfo
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- CN107130627A CN107130627A CN201710410819.9A CN201710410819A CN107130627A CN 107130627 A CN107130627 A CN 107130627A CN 201710410819 A CN201710410819 A CN 201710410819A CN 107130627 A CN107130627 A CN 107130627A
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- concrete
- observation pier
- poling
- construction method
- fixed
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
Abstract
The present invention discloses a kind of construction method of the observation pier based on GNSS system for monitoring displacement, comprises the following steps：Excavation pit, matrix treatment, reinforcing bar colligation, poling is installed, concreting, top cage bar is fixed, remove middle part template, concrete curing, pit is backfilled, top stirrup colligation, top PVC sleeve pipes, which are installed, to be fixed, concrete is mixed and stirred, pour, vibrate, eliminate unnecessary poling, aperture residual concrete is poured to vibrate by hand, levelness is adjusted, model sheetinstallat, mortar or concrete are mixed and stirred, floor leveling layer mortar is filled or platform concreting, form removal, observation pier is integrally sprinkled water maintenance.Compared with prior art, beneficial effects of the present invention are：The position of adjacent observation pier is consolidated, it is ensured that the stability of observation result, can be prevented effectively from GNSS signal and be absorbed or blocked.
Description
Technical field
The present invention relates to a kind of construction method of observation pier, and in particular to a kind of observation based on GNSS system for monitoring displacement
The construction method of pier.
Background technology
Prevent and reduce natural disasters field, be in very for the surface displacement variation monitoring of Potential hazards body in engineering and geological disaster
How consequence, obtain the displacement information of measured point and how to realize that quick, effective early warning is current in real time
Great difficult problem urgently to be resolved hurrily.
Being presently used for automating the equipment of ground displacement mainly has：Stay-supported ground displacement instrument, laser type
Table displacement monitor, time domain reflectometry, GPS monitoring systems etc..Bracing wire or laser type ground displacement instrument belong to relative displacement
Monitoring method, in real time measurement distance between two points change has the advantages that precision is high, is protected from weather influences, low-power consumption, but can only measure
Change in displacement in one-dimensional square；Time domain reflectometry falls within one-dimensional measurement, it is measurable go out along any point deformation, it is this
Excessively complexity is realized on method and technology, technological layer is not still very ripe, it should seldom；GNSS (the whole world based on satellite fix
Navigational satellite system) it is the new technology developed rapidly in recent years, more and more starting in geology, engineering field should
With using GNSS carrier phase relative positioning technologies, carrier phase and pseudo range data by the use of two receiver collections are used as master
Want observation to carry out difference resolving, and estimate the integer ambiguity of carrier phase, high-precision relative position can be obtained in real time
Confidence ceases, and greatly improves operating efficiency, reduces operating cost, and the setting of the observation pier position of GNSS system for monitoring displacement
Precision for monitoring result plays vital effect.
The content of the invention
It is an object of the invention to provide a kind of construction method of the observation pier based on GNSS system for monitoring displacement, to ensure
Monitoring result is accurate.
To achieve these goals, the technical scheme that provides of the present invention is：A kind of sight based on GNSS system for monitoring displacement
The construction method of pier is surveyed, is comprised the following steps：
Step one：Excavation pit, excavates the foundation ditch for carrying concrete observation pier according to the position selected on construction drawing, opens
After digging terminates, pit periphery is tamped, by crater wall soil pressure reality and little water is sprayed；
Step 2：Matrix treatment, is arranged and is rinsed to surface of bedrock；
Step 3：Reinforcing bar colligation, carries out bottom reinforcement bars, some or all of stirrup colligation of middle part cage bar, and concrete and mixes
With；
Step 4：Poling is installed, and carries out the installation and fixation of installing fixed and middle part template of poling；
Step 5：Concreting, concrete carries out placement layer by layer according to 30cm thickness after mixing and stirring, vibrated；
Step 6：Top cage bar is fixed, and top cage bar is inserted into fixed after the concrete 20cm of middle part；
Step 7：Middle part template is removed, by middle part form removable after concrete strength is more than 30%；
Step 8：Concrete curing, watering maintenance is carried out to middle part and lower concrete；
Step 9：Pit is backfilled, and concrete periphery pastes the thick cystosepiments of 2cm or carries out isolation back-filling in layers with the thick coarse sands of 4cm；
Step 10：Top stirrup colligation；
Step 11：Top PVC sleeve pipes are installed, fixed；
Step 12：Concrete is mixed and stirred, 30cm thickness placement layer by layer, vibrated, until below the mouth of pipe at 20cm；
Step 13：Unnecessary poling is eliminated, the redundance of poling is reamed and makes mouth of pipe level, sealed again with adhesive tape；
Step 14：Pour aperture residual concrete vibrate by hand, and the forced centering of fixed pin bolt will be installed in time
The pin bolt insertion concrete on chassis, adjustment chassis is so that its placed in the middle and surface level, poling is aligned with threading hole；
Step 15：Levelness is adjusted, every water for detecting and adjusting forced centering plate for 5 minutes with horizon rule during concrete initial set
Pingdu；
Step 10 six：Model sheetinstallat, observation pier surrounding ground is smooth and tamps, and 0.8 × 0.8m side mould is installed and fixed, and keeps
Template center and observation pier center are concentric, and make template direction and attachment body parallel or vertical；
Step 10 seven：Mortar or concrete are mixed and stirred；
Step 10 eight：Floor leveling layer mortar is filled or platform concreting；
Step 10 nine：Form removal, leveling mortar or platform concrete strength more than 30% after form removal；
Step 2 ten：Observation pier is integrally sprinkled water maintenance.
Preferably, when the poling described in step 4 installs fixed, poling two need to be sealed.
Preferably, step 6 is carried out in 20 minutes after the completion of the concreting of middle part.
Preferably, described in step 9 backfill material is using excavated material outside cystosepiment or coarse sand and tamps.
Preferably, the mouth of pipe described in step 13 is highly less than mould pipe height 4mm.
Preferably, described in step 10 eight floor leveling layer mortar fill or platform concreting during with cystosepiment,
Cardboard, plank or pitch coarse sand mud etc. carry out isolation seam isolation.
Compared with prior art, beneficial effects of the present invention are：The position of adjacent observation pier is consolidated, it is ensured that observation result
Stability, can be prevented effectively from GNSS signal and be absorbed or blocked.
Embodiment
A kind of construction method of the observation pier based on GNSS system for monitoring displacement, comprises the following steps：
Step one：Excavation pit, excavates the foundation ditch for carrying concrete observation pier according to the position selected on construction drawing, opens
After digging terminates, pit periphery is tamped, by crater wall soil pressure reality and little water is sprayed；Sprinkling little water is used to consolidate side slope, there is pre-
Discharge lightning protection should pole install after carry out；
Step 2：Matrix treatment, is arranged and is rinsed to surface of bedrock；
Step 3：Reinforcing bar colligation, carries out bottom reinforcement bars, some or all of stirrup colligation of middle part cage bar, and concrete and mixes
With；There is pre-arcing to be grounded and go electrostatic grounding, its built-in fitting and company should synchronously complete；
Step 4：Poling is installed, and carries out the installation and fixation of installing fixed and middle part template of poling；
Step 5：Concreting, concrete carries out placement layer by layer according to 30cm thickness after mixing and stirring, vibrated；
Step 6：Top cage bar is fixed, and top cage bar is inserted into fixed after the concrete 20cm of middle part；
Step 7：Middle part template is removed, by middle part form removable after concrete strength is more than 30%；
Step 8：Concrete curing, watering maintenance is carried out to middle part and lower concrete；
Step 9：Pit is backfilled, and concrete periphery pastes the thick cystosepiments of 2cm or carries out isolation back-filling in layers with the thick coarse sands of 4cm；
Step 10：Top stirrup colligation；
Step 11：Top PVC sleeve pipes are installed, fixed；
Step 12：Concrete is mixed and stirred, 30cm thickness placement layer by layer, vibrated, until below the mouth of pipe at 20cm；
Step 13：Unnecessary poling is eliminated, the redundance of poling is reamed and makes mouth of pipe level, sealed again with adhesive tape；
Step 14：Pour aperture residual concrete vibrate by hand, and the forced centering of fixed pin bolt will be installed in time
The pin bolt insertion concrete on chassis, adjustment chassis is so that its placed in the middle and surface level, poling is aligned with threading hole；
Step 15：Levelness is adjusted, every water for detecting and adjusting forced centering plate for 5 minutes with horizon rule during concrete initial set
Pingdu；
Step 10 six：Model sheetinstallat, observation pier surrounding ground is smooth and tamps, and 0.8 × 0.8m side mould is installed and fixed, and keeps
Template center and observation pier center are concentric, and make template direction and attachment body parallel or vertical；
Step 10 seven：Mortar or concrete are mixed and stirred；
Step 10 eight：Floor leveling layer mortar is filled or platform concreting；
Step 10 nine：Form removal, leveling mortar or platform concrete strength more than 30% after form removal；
Step 2 ten：Observation pier is integrally sprinkled water maintenance.
The optimal technical scheme of the present embodiment is that when the poling described in step 4 installs fixed, need to seal poling two.
The optimal technical scheme of the present embodiment is that step 6 is carried out in 20 minutes after the completion of the concreting of middle part.
The optimal technical scheme of the present embodiment is that backfill material uses excavated material outside the cystosepiment or coarse sand described in step 9
And tamp.
The optimal technical scheme of the present embodiment is that the mouth of pipe described in step 13 is highly less than mould pipe height 4mm.
The optimal technical scheme of the present embodiment is that floor leveling layer mortar is filled described in step 10 eight or platform concrete is poured
Isolation seam isolation is carried out during building with cystosepiment, cardboard, plank or pitch coarse sand mud etc..Isolation seam construction is carried out with template,
Need first to construct to the mortar or concrete in 0.5 × 0.5m, 0.5 × 0.5m internal models, treat mortar or concrete in internal model
After initial set, isolated material is installed and carries out mortar or concrete construction in external mold again.
The present invention observation pier concreting step be：
1st, concrete raw material is selected：
A. it is not less than 325 using cement grade, makes the concrete pillar not influenceed by freeze thawing, it is preferential to use slag and volcanic ash
Matter cement, makes the concrete pillar influenceed by freeze thawing, uses Portland cement.Making by saline and alkaline, seawater or industry
When sewage corrodes the markstone in area, sulfate-resistant cement must be used, the markstone in the dry environments such as desert, gobi must not make
With volcano grey matter cement；
B. stone matches somebody with somebody qualified 5-40mm natural pebble or hard rubble using level, should not use the stone of same size；
C. sand uses the middle sand of 0.15-3mm particle diameters, and clay content is no more than 3%；
D. water must be no more than 1% using the fresh water cleaned, sulphates content；
E. additive can be selected according to construction environment, such as early strength agent, water reducer, air entraining agent, and its quality should meet respective specified,
The additive containing villaumite must not be used.
2nd, Concrete：
The configuration of its aggregate and cement, water, the consumption of sand and mixing ratio are with reference to following table during Concrete.
3rd, concrete construction：
A. concrete is modulated, must be first net by sand, granite-wash, when burning filling markstone, successively must fully it make firm by ramming；
B. when temperature is below 0 DEG C, it is necessary to add antifreezing agent, striking time is no less than 24 hours；
C. striking time can be determined according to temperature and additive performance, under general condition, when temperature on average is more than 0 DEG C, form removal
Time is no less than 12 hours.
Claims (6)
1. a kind of construction method of the observation pier based on GNSS system for monitoring displacement, it is characterised in that comprise the following steps：
Step one：Excavation pit, excavates the foundation ditch for carrying concrete observation pier according to the position selected on construction drawing, opens
After digging terminates, pit periphery is tamped, by crater wall soil pressure reality and little water is sprayed；
Step 2：Matrix treatment, is arranged and is rinsed to surface of bedrock；
Step 3：Reinforcing bar colligation, carries out bottom reinforcement bars, some or all of stirrup colligation of middle part cage bar, and concrete and mixes
With；
Step 4：Poling is installed, and carries out the installation and fixation of installing fixed and middle part template of poling；
Step 5：Concreting, concrete carries out placement layer by layer according to 30cm thickness after mixing and stirring, vibrated；
Step 6：Top cage bar is fixed, and top cage bar is inserted into fixed after the concrete 20cm of middle part；
Step 7：Middle part template is removed, by middle part form removable after concrete strength is more than 30%；
Step 8：Concrete curing, watering maintenance is carried out to middle part and lower concrete；
Step 9：Pit is backfilled, and concrete periphery pastes the thick cystosepiments of 2cm or carries out isolation back-filling in layers with the thick coarse sands of 4cm；
Step 10：Top stirrup colligation；
Step 11：Top PVC sleeve pipes are installed, fixed；
Step 12：Concrete is mixed and stirred, 30cm thickness placement layer by layer, vibrated, until below the mouth of pipe at 20cm；
Step 13：Unnecessary poling is eliminated, the redundance of poling is reamed and makes mouth of pipe level, sealed again with adhesive tape；
Step 14：Pour aperture residual concrete vibrate by hand, and the forced centering of fixed pin bolt will be installed in time
The pin bolt insertion concrete on chassis, adjustment chassis is so that its placed in the middle and surface level, poling is aligned with threading hole；
Step 15：Levelness is adjusted, every water for detecting and adjusting forced centering plate for 5 minutes with horizon rule during concrete initial set
Pingdu；
Step 10 six：Model sheetinstallat, observation pier surrounding ground is smooth and tamps, and 0.8 × 0.8m side mould is installed and fixed, and keeps
Template center and observation pier center are concentric, and make template direction and attachment body parallel or vertical；
Step 10 seven：Mortar or concrete are mixed and stirred；
Step 10 eight：Floor leveling layer mortar is filled or platform concreting；
Step 10 nine：Form removal, leveling mortar or platform concrete strength more than 30% after form removal；
Step 2 ten：Observation pier is integrally sprinkled water maintenance.
2. the construction method of the observation pier according to claim 1 based on GNSS system for monitoring displacement, it is characterised in that step
When poling described in rapid four installs fixed, poling two need to be sealed.
3. the construction method of the observation pier according to claim 1 based on GNSS system for monitoring displacement, it is characterised in that step
Rapid six are carried out in 20 minutes after the completion of the concreting of middle part.
4. the construction method of the observation pier according to claim 1 based on GNSS system for monitoring displacement, it is characterised in that step
Backfill material is using excavated material outside cystosepiment or coarse sand described in rapid nine and tamps.
5. the construction method of the observation pier according to claim 1 based on GNSS system for monitoring displacement, it is characterised in that step
The mouth of pipe described in rapid 13 is highly less than mould pipe height 4mm.
6. the construction method of the observation pier according to claim 1 based on GNSS system for monitoring displacement, it is characterised in that step
Described in rapid 18 floor leveling layer mortar fill or platform concreting during use cystosepiment, cardboard, plank or pitch coarse sand
Mud etc. carries out isolation seam isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710410819.9A CN107130627A (en) | 2017-06-04 | 2017-06-04 | A kind of construction method of the observation pier based on GNSS system for monitoring displacement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710410819.9A CN107130627A (en) | 2017-06-04 | 2017-06-04 | A kind of construction method of the observation pier based on GNSS system for monitoring displacement |
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| CN107130627A true CN107130627A (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710410819.9A Pending CN107130627A (en) | 2017-06-04 | 2017-06-04 | A kind of construction method of the observation pier based on GNSS system for monitoring displacement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007442A (en) * | 2017-12-13 | 2018-05-08 | 山西四建集团有限公司 | Hole construction method is surveyed in experimental plot with automatic monitored control system |
| CN113513995A (en) * | 2021-06-03 | 2021-10-19 | 马龙 | Ground displacement monitoring device for geological monitoring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101229129B1 (en) * | 2010-11-15 | 2013-02-01 | 현대건설주식회사 | Method for measuring verticality of structure using GNSS and system thereof |
| CN103076010A (en) * | 2013-01-25 | 2013-05-01 | 天津二十冶建设有限公司 | Fabrication method of forced centering observation pillar for precision engineering measurement and observation pillar |
| CN203310412U (en) * | 2013-06-20 | 2013-11-27 | 中国地震局地震研究所 | GNSS (global navigation satellite system) observation pillar for reducing multipath effect |
| CN203364831U (en) * | 2013-07-02 | 2013-12-25 | 中国地震局地震研究所 | Global navigational satellite system observation pillar for reducing temperature difference effect |
-
2017
- 2017-06-04 CN CN201710410819.9A patent/CN107130627A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101229129B1 (en) * | 2010-11-15 | 2013-02-01 | 현대건설주식회사 | Method for measuring verticality of structure using GNSS and system thereof |
| CN103076010A (en) * | 2013-01-25 | 2013-05-01 | 天津二十冶建设有限公司 | Fabrication method of forced centering observation pillar for precision engineering measurement and observation pillar |
| CN203310412U (en) * | 2013-06-20 | 2013-11-27 | 中国地震局地震研究所 | GNSS (global navigation satellite system) observation pillar for reducing multipath effect |
| CN203364831U (en) * | 2013-07-02 | 2013-12-25 | 中国地震局地震研究所 | Global navigational satellite system observation pillar for reducing temperature difference effect |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108007442A (en) * | 2017-12-13 | 2018-05-08 | 山西四建集团有限公司 | Hole construction method is surveyed in experimental plot with automatic monitored control system |
| CN113513995A (en) * | 2021-06-03 | 2021-10-19 | 马龙 | Ground displacement monitoring device for geological monitoring |
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Application publication date: 20170905 |
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