CN203274729U - Soft soil area horizontal elevation measuring control point - Google Patents
Soft soil area horizontal elevation measuring control point Download PDFInfo
- Publication number
- CN203274729U CN203274729U CN 201320225047 CN201320225047U CN203274729U CN 203274729 U CN203274729 U CN 203274729U CN 201320225047 CN201320225047 CN 201320225047 CN 201320225047 U CN201320225047 U CN 201320225047U CN 203274729 U CN203274729 U CN 203274729U
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- China
- Prior art keywords
- mark
- measurement
- mark post
- soft clay
- protection tube
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- Withdrawn - After Issue
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Abstract
The utility model provides a soft soil area horizontal elevation measuring control point. The soft soil area horizontal elevation measuring control point comprises a marker post, a core column formed by cement mortar is arranged in the marker post, the bottom of the marker post is buried in a compact sand layer or a firm bearing stratum, a steel protective tube is sleeved on a part of the marker post exposed above ground, the upper port of the steel protective tube and the top of the marker post are in the same level, and a concrete abutment wall is poured at the periphery of the steel protective tube. The soft soil area horizontal elevation measuring control point has the advantages of being rational in structure, being mature in construction technology, being capable of ensuring the stability of base point measuring mark, being long in service life, and the like, and is especially suitable for being buried as a horizontal elevation measuring deeply-buried measuring control point in the soft soil area.
Description
Technical field
The utility model relates to the control survey reference installation of heavy construction construction survey and settlement monitoring and operation maintenance etc., relates in particular to a kind of buried measurement of plane elevation reference mark that is applicable to soft clay area.
Background technology
Control survey is the subject of research Accurate Measurement ground point locus.Be called the control net by these somes net form that consists of, its task is the foundation as the lower grade surveying work, plays control action on precision.In actual measurement work, first some have the point of controlling meaning surveying district's selection, at first their planimetric position and elevation are accurately measured out, and then measure other detail points according to them.
In prior art, the way of burying the reference mark underground commonly used is to make mark to laying of markstone, or charged electrical hole hammer out, the mode of concreting mark core.The measurement mark core of plane and vertical control point is fixed in markstone, and the method for embedding of markstone is usually taked 1. to excavate and is buried the foundation ditch of measuring the reference mark markstone underground and 2. build mixed earth and 3. bury underground and measure the reference mark mark core key steps such as maintenance that 4. the cement solidifies.But adopt the reference mark horizontal level of above-mentioned markstone and method for embedding and elevation all unstable, especially in soft clay area, when particularly periphery has the Large Construction project, along with passage of time planimetric coordinates and elevation all obvious variation can occur, even the reference mark is destroyed, can't guarantee the stability at reference mark.
Chinese invention patent 201010540446.5 discloses Deep Embedded Piles and the method for embedding thereof of a kind of freezing and defrosting area plane vertical control point, mark post by the steel on its top and cement protection tube and between fine sand packed layer, steel protection tube and mark post between slide construction and the cement mortar protective course of mark post, stem stem, mud top layer consist of.Method for embedding by excavation stake hole, top, bury the cement protection tube underground, hole, insert mark post, the injected water cement mortar, the steps such as slide construction and fixed base point mark are set form.This utility model all can be controlled at the thaw collapse amount in permissible range for thaw collapse, strong thaw collapse area, and particularly the depth of burying of mark post can reach and freezes dark following gravel soil layer according to freezing dark adjustment.But this invention structure is comparatively complicated, and work efficiency is not high, and the measurement reference mark that is not suitable for soft clay area is buried underground.
The utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of buried measurement of plane elevation reference mark that is applicable to soft clay area, is used for solving the problems of the prior art.
Reach for achieving the above object other relevant purposes; the utility model provides measurement of higher degree reference mark, a kind of soft clay area plane; comprise mark post; be provided with the stem stem that sand-cement slurry consists of in described mark post; described mark post bottom is buried underground to dense sand stratum or solid supporting course; described mark post is exposed to the above part in ground and is arranged with the steel protection tube, and the steel protection tube is suitable for reading concordant with the mark post top, and concrete pier base has been built in described steel protection tube periphery.
Optionally, described mark post by plurality of sections of steel pipes be threaded connection, pipe collar connects or is welded to connect and consist of.
Optionally, described steel pipe is diameter of phi 160-180mm, wall thickness 4-10mm, and length is the weldless steel tube of 1-6m.
Optionally, the diameter of described steel protection tube is Φ 190-210mm.
Optionally, the pallet that arranges by the bottom of described steel protection tube is fixed on described mark post.
Optionally, described concrete pier base width is 50-60cm.
Optionally, described mark post is exposed to ground 40-50cm.
By above technical scheme, the utility model has following technique effect compared to prior art: the depth of burying of mark post reaches dense sand stratum or solid supporting course, guarantee whole pile foundation stability, this buried measurement reference mark can be controlled at settling amount in permissible range in soft clay area, and reach steady state (SS) within a short period of time; Connect section by section each steel pipe, can guarantee the immersed tube verticality, increase work efficiency and success ratio; The utlity model has rational in infrastructure, construction technology is ripe, can guarantee basic point mark stability, the advantages such as long service life, the buried measurement of the plane elevation reference mark that is particularly useful for soft clay area is buried underground.
Description of drawings
Fig. 1 is the structural representation of the buried measurement of the plane elevation reference mark preferred embodiment of the utility model soft clay area.
The element numbers explanation:
1 mark post
2 stem stems
3 steel protection tubes
4 concrete pier bases
51 protective covers
52 protection wells
61 main survey marks
62 auxiliary survey marks
Embodiment
Below by particular specific embodiment explanation embodiment of the present utility model, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this instructions.
See also Fig. 1.Notice, the appended graphic structure that illustrates of this instructions, ratio, size etc., equal contents in order to coordinate instructions to disclose only, understand and read for person skilled in the art scholar, be not to limit the enforceable qualifications of the utility model, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under the effect that the utility model can produce and the purpose that can reach, all should still drop on the technology contents that the utility model discloses and get in the scope that can contain.
Consult shown in Figure 1; it is the structural representation of the utility model soft clay area plane measurement of higher degree reference mark preferred embodiment; comprise mark post 1; be provided with the stem stem 2 that sand-cement slurry consists of in described mark post 1; described mark post bottom is buried underground to dense sand stratum or solid supporting course; guarantee whole pile foundation stability; described mark post is exposed to the above part in ground and is arranged with steel protection tube 3; the steel protection tube is suitable for reading concordant with the mark post top; concrete pier base 4 has been built in described steel protection tube periphery, with the above part of fixed bottom boundary.
For convenience of installing, mark post by plurality of sections of steel pipes be threaded connection, pipe collar connects or is welded to connect and consist of.In above-mentioned connected mode, adopt welding can't guarantee accurate verticality, adopt pipe collar need to additionally take borehole space, therefore preferably adopt thread connecting mode, when guaranteeing verticality, installation rate is the fastest.Above-mentioned steel pipe is diameter of phi 160-180mm, wall thickness 4-10mm, and length is the weldless steel tube of 1-6m, in this preferred embodiment, actual employing steel pipe sizes is diameter of phi 168mm, wall thickness 5mm, length 3m.
Determine according to measuring the reference mark geopotentia how many mark posts bassets, high-land, mark post bassets relatively shortly, otherwise relatively long, generally mark post is exposed to ground 40-50cm.The mark post sheathed steel protection tube 3 of part that bassets, the bottom of steel protection tube 3 is provided with pallet, by pallet is welded on complete on mark post fixing.The diameter of above-mentioned steel protection tube is Φ 190-210mm, and in this preferred embodiment, the actual steel protection tube that adopts is of a size of diameter of phi 200mm.
After the installation of steel protection tube; casting concrete pier 4 around it; steel protection tube, concrete pier base height are all concordant with the mark post top; the concrete pier base width is 50-60cm; the width of concrete pier base also determines according to physical features, high-land, its width less; high-land, its width is relatively large.Then bury survey mark underground, comprise main survey mark 61 and auxiliary survey mark 62.Build by laying at last protective equipment, protective equipment comprises the protective cover 51 on protection well 52 and protection well, and the protective cover lid is the cement cover board of 10cm for square 1m * 1m, thickness.
By above measure, the utility model carries out guaranteeing under the condition of Large Construction to measure the reliable and stable of reference mark around, and is difficult for destroyedly, is beneficial to long-term engineering monitoring intermediate item and uses.
Method for embedding below in conjunction with measurement of higher degree reference mark, soft clay area plane is further described, and comprises the following steps:
1) hole in position, buried measurement reference mark, bore diameter is 170-190mm, bore diameter is slightly larger than the mark post diameter, less than or equal to steel protection tube diameter, in this preferred embodiment, bore diameter is actual is 180mm, hole depth reaches dense sand stratum or solid supporting course, the borehole perpendicularity error is not more than 1 degree, reaches to carry after hole depth requires to bore whole hole, clear hole;
2) aperture, hole deviation, the hole depth of monitoring boring repeat cleaning bottom of hole, clear hole in the defective situation of boring, until detect qualified;
3) with diameter of phi 160-180mm, wall thickness 4-10mm, length be 1-6m respectively save steel pipe section by section be threaded the standard pipe collar connects or welding after, insert boring at the bottom of the hole, the mark post top is exposed to ground 40-50cm.In this preferred embodiment, actual employing steel pipe sizes is diameter of phi 168mm, wall thickness 5mm, length 3m;
4) enter sand-cement slurry so that its side friction power more general bored concrete pile high with certain pressure to the hole rising pouring from the mark post top, sand-cement slurry is upwards returned along borehole wall and is formed cement mortar protective course to ground, and makes sand-cement slurry fill with mark post to become stem stem;
5) be that the steel protection tube of Φ 190-210mm is sheathed on mark post and is exposed to above ground portion with diameter, in this preferred embodiment, the actual steel protection tube that adopts is of a size of diameter of phi 200mm.The steel protection tube is suitable for reading concordant with mark post, and steel protection tube bottom is provided with pallet, pallet and mark post welding;
6) casting concrete pier around the steel protection tube, the concrete pier base width is 50-60cm;
7) at mark post top installation fixation measuring sign, build by laying protective equipment, bury punctuate protection Sign Board underground.
In sum, the depth of burying of the utility model mark post reaches dense sand stratum or solid supporting course, guarantee whole pile foundation stability, this buried measurement reference mark can be controlled at settling amount in permissible range in soft clay area, and reach steady state (SS) within a short period of time; Connect section by section each steel pipe, can guarantee the immersed tube verticality, increase work efficiency and success ratio; The utlity model has rational in infrastructure, construction technology is ripe, can guarantee basic point mark stability, the advantages such as long service life, the buried measurement of the plane elevation reference mark that is particularly useful for soft clay area is buried underground.So the utility model has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not is used for restriction the utility model.Any person skilled in the art scholar all can under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of completing under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (7)
1. measurement of higher degree reference mark, a soft clay area plane; comprise mark post; be provided with the stem stem that sand-cement slurry consists of in described mark post; it is characterized in that; described mark post bottom is buried underground to dense sand stratum or solid supporting course; described mark post is exposed to the above part in ground and is arranged with the steel protection tube, and the steel protection tube is suitable for reading concordant with the mark post top, and concrete pier base has been built in described steel protection tube periphery.
2. measurement of higher degree reference mark, soft clay area plane according to claim 1, is characterized in that, described mark post by plurality of sections of steel pipes be threaded connection, pipe collar connects or be welded to connect and consist of.
3. measurement of higher degree reference mark, soft clay area plane according to claim 2, is characterized in that, described steel pipe is diameter of phi 160-180mm, wall thickness 4-10mm, and length is the weldless steel tube of 1-6m.
4. measurement of higher degree reference mark, soft clay area plane according to claim 3, is characterized in that, the diameter of described steel protection tube is Φ 190-210mm.
5. measurement of higher degree reference mark, soft clay area plane according to claim 1, is characterized in that, the pallet that described steel protection tube arranges by the bottom is fixed on described mark post.
6. measurement of higher degree reference mark, soft clay area plane according to claim 1, is characterized in that, described concrete pier base width is 50-60cm.
7. measurement of higher degree reference mark, soft clay area plane according to claim 1, is characterized in that, described mark post is exposed to ground 40-50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320225047 CN203274729U (en) | 2013-04-28 | 2013-04-28 | Soft soil area horizontal elevation measuring control point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320225047 CN203274729U (en) | 2013-04-28 | 2013-04-28 | Soft soil area horizontal elevation measuring control point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203274729U true CN203274729U (en) | 2013-11-06 |
Family
ID=49505116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320225047 Withdrawn - After Issue CN203274729U (en) | 2013-04-28 | 2013-04-28 | Soft soil area horizontal elevation measuring control point |
Country Status (1)
| Country | Link |
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| CN (1) | CN203274729U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913147A (en) * | 2014-04-09 | 2014-07-09 | 中国建筑第八工程局有限公司 | Elevation positioning device of hydraulic inserted steel pipe column and positioning operation method |
| CN104121895A (en) * | 2013-04-28 | 2014-10-29 | 上海勘测设计研究院 | Soft soil area plane height measurement control point and embedding method thereof |
| CN113529682A (en) * | 2021-06-24 | 2021-10-22 | 中国五冶集团有限公司 | Soft soil layer measurement control point structure and construction method |
-
2013
- 2013-04-28 CN CN 201320225047 patent/CN203274729U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121895A (en) * | 2013-04-28 | 2014-10-29 | 上海勘测设计研究院 | Soft soil area plane height measurement control point and embedding method thereof |
| CN104121895B (en) * | 2013-04-28 | 2016-07-20 | 上海勘测设计研究院 | The stake bar at plane measurement of higher degree control point, soft clay area and method for embedding thereof |
| CN103913147A (en) * | 2014-04-09 | 2014-07-09 | 中国建筑第八工程局有限公司 | Elevation positioning device of hydraulic inserted steel pipe column and positioning operation method |
| CN103913147B (en) * | 2014-04-09 | 2016-03-30 | 中国建筑第八工程局有限公司 | Hydraulic pressure inserts elevation location device and the positioning action method of steel pipe column |
| CN113529682A (en) * | 2021-06-24 | 2021-10-22 | 中国五冶集团有限公司 | Soft soil layer measurement control point structure and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131106 Effective date of abandoning: 20160720 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |