CN109163716A - A kind of engineering surveying control point structure and its construction method - Google Patents
A kind of engineering surveying control point structure and its construction method Download PDFInfo
- Publication number
- CN109163716A CN109163716A CN201811251521.9A CN201811251521A CN109163716A CN 109163716 A CN109163716 A CN 109163716A CN 201811251521 A CN201811251521 A CN 201811251521A CN 109163716 A CN109163716 A CN 109163716A
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- CN
- China
- Prior art keywords
- control point
- concrete
- engineering surveying
- protector
- pile body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/02—Means for marking measuring points
- G01C15/04—Permanent marks; Boundary markers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
Abstract
A kind of engineering surveying control point structure and its construction method, concrete pedestal and protection fence including concrete cushion located underground, pile body and markstone, and on ground；The bottom at control point is arranged in concrete cushion; pile body and markstone are successively poured on concrete cushion; surrounding puddled backfill is to ground elevation; cast-in-place concrete pedestal and center protector; drainage duct and fence jack are preset on concrete pedestal; cross mark in control point is squeezed into the protector of center, fence is protected in installation on fence jack, and warning paint face is brushed on the side wall of concrete pedestal.Relative to conventional control point design, construction method of the present invention is simple, strengthens the disturbance rejection and warning performance at control point, adverse effect caused by avoiding because of dominating pair of vertices normal construction.
Description
Technical field
The present invention relates to engineering measurement fields, and in particular to a kind of engineering surveying control point structure and its construction method.
Background technique
Engineering surveying control point is widely used, and is related to all Large Scale Construction Engineerings, due to the period one of big construction item
As it is longer, measure the service life at control point through entire process of construction, service life is also longer.
General construction project is often directly arranged in control point concrete surface relatively stable in construction area, using quarter
It draws, be implanted into the forms such as steel nail, or even withouyt maintenance prevention.By constructing and site traffic is influenced, especially bulk transport vehicle
It is current or carry on construction work at night it is current etc. influence, be easy to cause the disturbance, destruction or loss at control point.Engineering survey is construction
Primary process, be that each link of engineering project is able to the guarantee smoothly carried out, engineering surveying control network has control global and limit
The effect of measurement error processed accumulation, once be affected project construction may be caused it is unfavorable.Therefore it is applied in design and control point
Working hour is considered as factors, in addition to its Position Design should avoid the construction area that may be disturbed as far as possible, should also reinforce measurement control
The durability and accuracy of system point itself, this just needs to be solved from the robustness and warning design aspect at control point.
Summary of the invention
It is an object of the invention to be directed to above-mentioned the problems of the prior art, provide a kind of engineering surveying control point structure and
Its construction method, the disturbance rejection to tighten control a little and warning performance, adverse effect caused by avoiding because of dominating pair of vertices normal construction.
To achieve the goals above, engineering surveying control point structure of the present invention, including concrete cushion located underground, stake
Body and markstone, and concrete pedestal and protection fence on ground；The concrete cushion is arranged at control point
Bottom, successively pour pile body and markstone on concrete cushion, surrounding puddled backfill to ground elevation, cast-in-place concrete pedestal and
Center protector presets drainage duct and fence jack on concrete pedestal, control point ten is squeezed into the protector of center
Word identifies, installation protection fence on the fence jack, brushes warning paint face on the side wall of the concrete pedestal.
Center protector opening capping above control point cross mark has cover sheet.
The concrete cushion depth of burying is greater than the standard frost penetration of construction project region.
The concrete cushion, pile body poured with markstone together with height not less than 1.5m.
The strength grade of the concrete cushion is not less than C15, and the strength grade of pile body and markstone is not less than C25.
The bottom surface of the center protector is lower than the bottom surface of concrete pedestal, and cross mark in control point is located at center protector
Center.
Two drainage ducts are provided on the concrete pedestal, two drainage ducts are opened up in diagonal position.
The warning paint face is formed using yellow dirty oil paint brushing, and the protection fence is made of steel pipe.
The construction method of engineering surveying control point structure of the present invention, comprising the following steps:
Step 1: determining control point position and an outer contour are put in measurement；
Step 2: excavation pit；
Step 3: bottom of foundation ditch carries out compacting processing, compacted density reaches 0.95 or more after compacting, is laid with concrete mats
Layer；
Step 4: formwork and cast-in-place concrete pile body and markstone；
Step 5: the surrounding compaction in layers of pile body, compacting factor is not less than 0.90, is backfilled to ground elevation, single layer backfill
Thickness is not more than 300cm；
Step 6: control point cross mark is squeezed into, and the point centered on control point cross mark, central point outer contour range
Interior excavate is not less than 15cm, formwork cast-in-place concrete pedestal and center protector lower than ground, and embedded by predetermined position in advance
Twice drainage duct and protection fence jack, two drainage ducts are opened up in diagonal position；
Step 7: installation protection fence, the brushing warning paint face on the side wall of concrete pedestal, and be center protector
It installs cover sheet additional, completes the construction of engineering surveying control point structure.
The outer contour at the control point is not less than 1.3m × 1.3m.
In the step two excavation of foundation pit depth be not less than 1.5m, and be greater than construction project regional standard frost penetration with
Under, excavation of foundation pit carries out slope according to geological conditions.
Compared with prior art, the present invention in underground setting concrete cushion, then in concrete cushion by successively pouring
Pile body and markstone are equipped with concrete pedestal on ground and open up center protector in center, enhance measurement control point
Whole performance of noiseproof brushes warning paint face on the side wall of concrete pedestal, and installation protection fence, increases on concrete pedestal
Strong warning performance, control point cross mark are located in the protector of center and increase protective cover plate, enhance cross mark
Disturbance rejection and anti-damage performance add drainage duct in the protector of center, can effectively avoid being impregnated in slot by rainwater.Relative to
Conventional control point design, construction method of the present invention is simple, greatly improves the disturbance rejection and warning at control point.
Detailed description of the invention
The stereoscopic schematic diagram of Fig. 1 engineering surveying control point structure of the present invention；
The diagrammatic cross-section of Fig. 2 engineering surveying control point structure of the present invention；
In attached drawing: 1- concrete cushion；2- pile body；3- markstone；4- drainage duct；5- fence jack；6- concrete pedestal；
The center 7- protector；The control point 8- cross mark；9- protects fence；10- warns paint face；11- cover sheet.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings.
Referring to Fig. 1, Fig. 2, engineering surveying control point structure of the invention includes concrete cushion 1 located underground, pile body 2
With markstone 3, and concrete pedestal 6 and protection fence 9 on ground.The bottom at control point is arranged in concrete cushion 1
Portion successively pours pile body 2 and markstone 3, surrounding puddled backfill to ground elevation on concrete cushion 1.6 He of cast-in-place concrete pedestal
Center protector 7 presets drainage duct 4 and fence jack 5 on concrete pedestal 6, control is squeezed into center protector 7
Point cross identifies 8, installation protection fence 9 on fence jack 5, the warning paint of brushing yellow black on the side wall of concrete pedestal 6
Face 10.7 opening of center protector capping above control point cross mark 8 has cover sheet 11.
In view of the needs of disturbance rejection, the contour line of concrete pedestal 6 is no less than 1.3m × 1.3m, and excavation of foundation pit is deep
Degree is no less than 1.5m in principle, and the bed course depth of burying should be greater than the standard frost penetration of construction project region, standard
Frost penetration should determine that excavation of foundation pit slope is answered according to the relevant regulations in " Code for design of building " (GB50007)
Require to carry out according to the slope that proposes in the report of construction project geotechnical engineering investigation, after excavation of foundation pit should surrounding add fence into
Row protection.
Bottom of foundation ditch first carries out compacting processing, and compacted density should reach 0.95 or more after compacting, then concrete cushion of constructing
1, the thickness of concrete cushion 1 is no less than 20cm, and strength grade of concrete is not lower than C15, reaches to blinding concrete intensity
To be not less than design strength 75% when, can supporting module, continue construct top pour pile body and markstone, pile body 2 and markstone 3
Strength grade of concrete be not lower than C25, when concrete strength reaches 75% not less than design strength, demoulding can be carried out
Operation is backfilled, the backfill of stake week should be layered implementation, and single layer backfill thickness should not exceed 300cm, and every layer is both needed to be compacted, and compacting factor is not
It should be less than 0.90, be backfilled to ground elevation.
The point centered on control point cross mark 8 excavates in the outer contour of control point lower than ground not less than 15cm,
Formwork cast-in-place concrete pedestal, form height are no less than 35cm, and it is not small that guarantee pours the above concrete pedestal thickness in rear ground
In 20cm, center protection slot template should be maked somebody a mere figurehead and is reliably fixed, and template 10~15cm of depth, the height that is above the ground level is not less than 5cm,
Center protector 7 is in design square or rectangular, and drainage duct 4 is diagonally arranged in protection trench bottom, and drainage duct 4 should diagonally be set
It sets, the ground to the outside of pedestal is arranged in bottom.
The fence jack 5 of protection fence 9 is located on pedestal, and jack plastics or steel angle nest are inserted into after concreting,
Then plastering leveling base-plates surface, it is contemplated that actual use is convenient three angles for placing measurement tripod are arranged in base-plates surface
Nest, angle nest can be in positive side triangular arrangement.The square design of fence 9 is protected, mating with pedestal jack, fence welding should be smooth
It is straight, it first derusts and brushes twice of reflecting at night paint afterwards, first pass can be brushed second time after parching, or paste reflecting at night police
Show band.
First pedestal is all brushed when face 10 is painted in the warning of painted concrete pedestal 6 as yellow, stickup paint after parching
Isolating bar, then it is spaced brushing black paint, paint removes isolating bar after parching.
The above overall dimensions design can make the appropriate adjustments according to the actual situation according to site condition, execution conditions etc., but
It should not be reduced in size design.
The rigidity that the present invention measures control point is big, can effectively prevent external disturbance, not especially vulnerable to construction infection
It carries on construction work at night or vehicular traffic damage, design and construction to whole construction project engineering surveying control points has reference.
Above said content be combine specific embodiment further detailed description of the invention, and it cannot be said that
A specific embodiment of the invention is only limitted to this, all within principle of the invention, can also make it is several it is simple deduction or
Replacement, these simple deduction or replace all shall be regarded as belonging to the patent protection that the present invention is determined by submitted claims
Range.
Claims (10)
1. a kind of engineering surveying control point structure, it is characterised in that: including concrete cushion (1) located underground, pile body (2) and
Markstone (3), and concrete pedestal (6) and protection fence (9) on ground；Concrete cushion (1) setting
In the bottom at control point, pile body (2) and markstone (3) are successively poured on concrete cushion (1), surrounding puddled backfill to ground is marked
Height, cast-in-place concrete pedestal (6) and center protector (7), preset drainage duct (4) on concrete pedestal (6) and fence is inserted
Control point cross mark (8) is squeezed into hole (5) at center in protector (7), installation protection is enclosed on the fence jack (5)
Warning paint face (10) is brushed on column (9) on the side wall of the concrete pedestal (6).
2. engineering surveying control point structure according to claim 1, it is characterised in that: in control point cross mark (8)
Center protector (7) the opening capping of side has cover sheet (11).
3. engineering surveying control point structure according to claim 1, it is characterised in that: the concrete cushion (1) buries
If depth is greater than the standard frost penetration of construction project region.
4. engineering surveying control point structure according to claim 1 or 3, it is characterised in that: the concrete cushion (1),
Pile body (2) and markstone (3) pour height together not less than 1.5m；The strength grade of the concrete cushion (1) is not less than
The strength grade of C15, pile body (2) and markstone (3) is not less than C25.
5. engineering surveying control point structure according to claim 1, it is characterised in that: the bottom of the center protector (7)
Face is lower than the bottom surface of concrete pedestal (6), and control point cross mark (8) is located at the center of center protector (7).
6. engineering surveying control point structure according to claim 1, it is characterised in that: on the concrete pedestal (6)
Two drainage ducts (4) are provided with, two drainage ducts (4) open up in diagonal position.
7. engineering surveying control point structure according to claim 1, it is characterised in that: warning paint face (10) is adopted
It is formed with yellow dirty oil paint brushing, the protection fence (9) is made of steel pipe.
8. a kind of construction method of engineering surveying control point structure as described in claim 1, which is characterized in that including following step
It is rapid:
Step 1: determining control point position and an outer contour are put in measurement；
Step 2: excavation pit；
Step 3: bottom of foundation ditch carries out compacting processing, compacted density reaches 0.95 or more after compacting, is laid with concrete cushion (1)；
Step 4: formwork and cast-in-place concrete pile body (2) and markstone (3)；
Step 5: the surrounding compaction in layers of pile body (2), compacting factor is not less than 0.90, is backfilled to ground elevation, and single layer backfill is thick
Degree is not more than 300cm；
Step 6: control point cross mark (8) is squeezed into, and the point centered on control point cross mark (8), central point outer contour model
It encloses interior excavate and is not less than 15cm, formwork cast-in-place concrete pedestal (6) and center protector (7) lower than ground, and in advance by predetermined
Twice drainage duct (4) and protection fence jack (5) are buried in position, and two drainage ducts (4) open up in diagonal position；
Step 7: installation protection fence (9), brushing warning paint face (10) on the side wall of concrete pedestal (6), and centered on
Protector (7) installs cover sheet (11) additional, completes the construction of engineering surveying control point structure.
9. construction method according to claim 8, it is characterised in that: the outer contour at control point not less than 1.3m ×
1.3m。
10. construction method according to claim 8, it is characterised in that: excavation of foundation pit depth is not less than 1.5m in step 2,
And it is greater than construction project regional standard frost penetration hereinafter, excavation of foundation pit carries out slope according to geological conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811251521.9A CN109163716A (en) | 2018-10-25 | 2018-10-25 | A kind of engineering surveying control point structure and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811251521.9A CN109163716A (en) | 2018-10-25 | 2018-10-25 | A kind of engineering surveying control point structure and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109163716A true CN109163716A (en) | 2019-01-08 |
Family
ID=64876137
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811251521.9A Pending CN109163716A (en) | 2018-10-25 | 2018-10-25 | A kind of engineering surveying control point structure and its construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW463844U (en) * | 2000-10-05 | 2001-11-11 | Ind Tech Res Inst | Structure of monitoring pile for global positioning system (GPS ) |
| CN202092648U (en) * | 2011-05-18 | 2011-12-28 | 江西省水利规划设计院 | Embedded measurement mark centre |
| CN205642384U (en) * | 2016-05-10 | 2016-10-12 | 江苏建筑职业技术学院 | High accuracy level control point device |
| CN106403996A (en) * | 2016-08-29 | 2017-02-15 | 中冶天工集团天津有限公司 | Production method of forced centering observation mark stake for precision engineering measurement |
| CN206772309U (en) * | 2017-05-15 | 2017-12-19 | 青建集团股份公司 | Measure sign protection sleeve |
| CN207662389U (en) * | 2017-11-17 | 2018-07-27 | 北京市南水北调南干渠管理处 | A kind of sedimentation and deformation observation base point using covered culvert |
-
2018
- 2018-10-25 CN CN201811251521.9A patent/CN109163716A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW463844U (en) * | 2000-10-05 | 2001-11-11 | Ind Tech Res Inst | Structure of monitoring pile for global positioning system (GPS ) |
| CN202092648U (en) * | 2011-05-18 | 2011-12-28 | 江西省水利规划设计院 | Embedded measurement mark centre |
| CN205642384U (en) * | 2016-05-10 | 2016-10-12 | 江苏建筑职业技术学院 | High accuracy level control point device |
| CN106403996A (en) * | 2016-08-29 | 2017-02-15 | 中冶天工集团天津有限公司 | Production method of forced centering observation mark stake for precision engineering measurement |
| CN206772309U (en) * | 2017-05-15 | 2017-12-19 | 青建集团股份公司 | Measure sign protection sleeve |
| CN207662389U (en) * | 2017-11-17 | 2018-07-27 | 北京市南水北调南干渠管理处 | A kind of sedimentation and deformation observation base point using covered culvert |
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