CN111578891A - Embedding method for bridge pier body deformation monitoring embedded prism - Google Patents
Embedding method for bridge pier body deformation monitoring embedded prism Download PDFInfo
- Publication number
- CN111578891A CN111578891A CN202010220025.8A CN202010220025A CN111578891A CN 111578891 A CN111578891 A CN 111578891A CN 202010220025 A CN202010220025 A CN 202010220025A CN 111578891 A CN111578891 A CN 111578891A
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- CN
- China
- Prior art keywords
- prism
- pier body
- embedded
- embedding
- monitoring
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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
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
Abstract
The invention relates to a method for embedding embedded prisms for monitoring deformation of a bridge pier body. In the stage of binding steel bars in pier body construction, an independent prism lens for detaching the beacon and the mirror frame is fixed in a pier body template, the front end face of the prism is tightly attached to the inner side of the template, the prism is poured in the pier body along with pouring construction, and the surface of the prism is removed after the template is detached, so that the prism head is exposed out of the surface of the pier body. The advantages are that: the method has the advantages that the equipment is simple, the method is simple, the embedding can be completed only by one prism lens and one on-site common reinforcement binding worker, equipment such as a tower crane and a hanging basket required by the common embedding method is not needed, and the cost of manpower and material resources is obviously saved. The prism and the pier body are well combined together, so that the structure is stable and reliable, the prism is protected inside, and construction influence is avoided. The prism can be stored and used for a long time after being buried, so that the observation work is ensured to be carried out smoothly, and the authenticity, integrity and continuity of data are also ensured. The prism is free from being disassembled, and the construction safety is enhanced by the colleagues who save manpower and material resources.
Description
Technical Field
The invention discloses a method for embedding embedded prisms for monitoring deformation of a bridge pier body, and belongs to the technical field of construction measurement.
Background
In bridge construction and later-stage monitoring and maintenance, pier body deformation monitoring is the most direct monitoring means capable of visually reflecting the real-time state of a bridge, the three-dimensional dynamics of pier body characteristic points are clearly observed, and the method plays a vital role in bridge safety construction, girder erection cable adjustment and the like. And the deformation monitoring work needs to ensure the consistency and the integrity of data. In actual operation, the monitoring prism buried in the measurement monitoring point location is exposed outside, and even if certain protection is performed, the monitoring prism is still prevented from being influenced by construction and natural environment and is often damaged. Once this kind of condition appears, then need bury again underground, on the one hand waste time and energy, on the other hand influences observation data authenticity, wholeness, continuity, causes certain deformation and subsides data distortion.
Disclosure of Invention
The invention provides a method for embedding an embedded prism for monitoring deformation of a bridge pier body, aiming at the condition that the embedded prism is exposed outside the pier body and is easy to damage, the method for embedding the embedded prism of the pier body is changed, the prism is directly embedded into the pier body in the pouring stage of the pier body, the pier body is immersed into the pier body, and only the mirror surface is exposed, so that a novel method for monitoring the deformation of the embedded prism of the bridge pier body is provided.
The technical solution of the invention is as follows: a method for embedding embedded prisms for monitoring bridge pier body deformation includes fixing a single prism lens for detaching a target and a mirror frame in a pier body template in a reinforcing steel bar binding stage during pier body construction, enabling the front end face of the prism to be tightly attached to the inner side of the template, pouring the prism in the pier body along with pouring construction, and removing the surface of the prism after the template is detached so that the prism head is exposed out of the surface of the pier body.
The periphery of the mirror surface of the single prism lens is sealed by the embedded bar glue, so that the reinforcing effect is achieved, the mirror surface is firmly embedded in the lens, the effect of permanent non-falling is achieved, and the prism is free from being detached after construction.
And selecting a proper embedding point on the upstream and downstream of the pier body to avoid the position right above the highway surface, and selecting an optimal station to ensure that the front surface of the prism faces the station as much as possible, so that the measurement sight and the mirror surface are ensured not to be more than 45 degrees.
Seal the parcel with prism head anterior segment before burying underground, prevent that the thick liquid from getting into and destroying the prism, treat that the pier shaft pours and finish, demolish the prism surface seal after the form removal, expose the prism.
The sealing package is wrapped by adhesive tape or sealing bag.
The prism position is supported and fixed by the steel bar when the prism is embedded, so that the position and the body state of the prism can not deviate due to strong pressure impact extrusion in the pouring process, and the prism is always positioned on the surface of the pier body.
The invention has the beneficial effects that:
1) the method has the advantages that the equipment is simple, the method is simple, the embedding can be completed only by one prism lens and one on-site common reinforcement binding worker, equipment such as a tower crane and a hanging basket required by the common embedding method is not needed, and the cost of manpower and material resources is obviously saved.
2) The prism and the pier body are well combined together, so that the structure is stable and reliable, the prism is protected inside, and construction influence is avoided. The prism can be stored and used for a long time after being buried, so that the observation work is ensured to be carried out smoothly, and the authenticity, integrity and continuity of data are also ensured.
3) The special embedding method of the prism and the lens are processed, so that the effect of being free of dismantling after construction is achieved, manpower and material resources are saved, and the construction safety is enhanced.
4) The position of the prism is selected to avoid being positioned above a road surface, so that the prism is ensured to be free from accidents even if the prism falls off accidentally after a long time.
Drawings
FIG. 1 is a schematic diagram of an embedding method of an embedded prism.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings
As shown in the attached figure 1, before the tower column is poured, a steel bar is bound, a prism is taken, a target and a mirror frame are removed, and only the head part of the middle prism is taken. The periphery of the mirror surface of the single prism lens is sealed by the embedded bar glue, so that the reinforcing effect is achieved, the mirror surface is firmly embedded in the lens, the permanent non-falling effect is achieved, and the prism is free from being detached after construction. The front section of the prism head is tightly wrapped by adhesive tape before embedding, so that the phenomenon that slurry enters the inside of the prism to damage the prism is avoided. When pre-burying, selecting proper burying points at the upstream and downstream of the pier body to avoid the position right above the road surface, and selecting the optimal station to ensure that the front surface of the prism faces the station as much as possible, thereby ensuring that the measuring sight line and the mirror surface are not more than 45 degrees. Let the workman of ligature reinforcing bar get into inside the template, find the same position in the template inboard, hug closely the template inboard with the one side of prism anterior segment parcel adhesive tape, it is fixed with the reinforcing bar support, guarantee that prism pours the in-process position and the attitude and do not take place the skew at the pier shaft, and be in pier shaft surface all the time. And after the fixing is finished, pouring is finished, after the template is removed, the prism is found, floating dust on the periphery is knocked off, the adhesive plaster on the surface of the prism is torn off, whether the prism is intact or not is observed, and if the prism is intact, the embedding is successful.
Claims (6)
1. A method for embedding embedded prisms for monitoring bridge pier body deformation is characterized in that a single prism lens for detaching a target and a mirror frame is fixed in a pier body template in a reinforcing steel bar binding stage during pier body construction, the front end face of the prism is tightly attached to the inner side of the template, the prism is poured in the pier body along with pouring construction, and the surface of the prism is removed after the template is detached, so that the prism head is exposed out of the surface of the pier body.
2. The method for embedding the embedded prism for monitoring the deformation of the bridge pier body according to claim 1, wherein the periphery of the mirror surface of the single prism lens is sealed by using bar planting glue to play a role in reinforcement, so that the mirror surface is firmly embedded in the lens, the effect of permanent non-falling is achieved, and the removal-free prism is realized after the engineering is finished.
3. The method for embedding the embedded prism for monitoring the deformation of the bridge pier body according to claim 1, wherein a proper embedding point is selected on the upstream and the downstream of the pier body, so that the situation that the front surface of the prism faces the installation point is avoided from being right above a highway surface, and the fact that the measurement sight line and the mirror surface are not larger than 45 degrees is guaranteed.
4. The method for embedding the embedded prism for monitoring the deformation of the bridge pier body according to claim 1, wherein the front section of the prism head is hermetically wrapped before embedding, so that slurry is prevented from entering and damaging the prism, after the pier body is poured, the outer surface of the prism is hermetically removed after a mold is removed, and the prism is exposed.
5. The method for burying the embedded prisms for monitoring the deformation of the bridge pier body according to claim 4, wherein the sealing package is wrapped by an adhesive tape or a sealing bag.
6. The method for embedding the embedded prism for monitoring the deformation of the bridge pier body according to claim 1, wherein the position of the embedded prism is supported and fixed by a steel bar when the embedded prism is embedded, so that the embedded prism is prevented from being deviated in position and posture due to strong pressure impact extrusion in a pouring process and is always positioned on the surface of the pier body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220025.8A CN111578891A (en) | 2020-03-25 | 2020-03-25 | Embedding method for bridge pier body deformation monitoring embedded prism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010220025.8A CN111578891A (en) | 2020-03-25 | 2020-03-25 | Embedding method for bridge pier body deformation monitoring embedded prism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111578891A true CN111578891A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010220025.8A Pending CN111578891A (en) | 2020-03-25 | 2020-03-25 | Embedding method for bridge pier body deformation monitoring embedded prism |
Country Status (1)
| Country | Link |
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| CN (1) | CN111578891A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007071542A (en) * | 2005-09-02 | 2007-03-22 | Fujifilm Holdings Corp | Measuring cell holding mechanism and biosensor |
| CN102636147A (en) * | 2012-03-31 | 2012-08-15 | 铁道第三勘察设计院集团有限公司 | Deformation monitoring method for existing railway line |
| CN203704909U (en) * | 2013-12-31 | 2014-07-09 | 中国建筑第八工程局有限公司 | Mountain high slope deformation monitoring device |
| CN204163120U (en) * | 2014-09-15 | 2015-02-18 | 中铁十二局集团有限公司 | Excavation of foundation pit space enclosing structure top deformation monitoring device |
| CN207007178U (en) * | 2017-07-31 | 2018-02-13 | 中国水利水电第四工程局有限公司 | One kind self-control deformation monitoring prism adapter |
-
2020
- 2020-03-25 CN CN202010220025.8A patent/CN111578891A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007071542A (en) * | 2005-09-02 | 2007-03-22 | Fujifilm Holdings Corp | Measuring cell holding mechanism and biosensor |
| CN102636147A (en) * | 2012-03-31 | 2012-08-15 | 铁道第三勘察设计院集团有限公司 | Deformation monitoring method for existing railway line |
| CN203704909U (en) * | 2013-12-31 | 2014-07-09 | 中国建筑第八工程局有限公司 | Mountain high slope deformation monitoring device |
| CN204163120U (en) * | 2014-09-15 | 2015-02-18 | 中铁十二局集团有限公司 | Excavation of foundation pit space enclosing structure top deformation monitoring device |
| CN207007178U (en) * | 2017-07-31 | 2018-02-13 | 中国水利水电第四工程局有限公司 | One kind self-control deformation monitoring prism adapter |
Non-Patent Citations (1)
| Title |
|---|
| 安沁丽: "《扣件式钢管模板高支撑体系现场监测》", 《重庆建筑》 * |
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Application publication date: 20200825 |