CN210243833U - Drainage box culvert structure reinforcing bar distribution detects structure based on geological radar method - Google Patents
Drainage box culvert structure reinforcing bar distribution detects structure based on geological radar method Download PDFInfo
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- CN210243833U CN210243833U CN201820179279.8U CN201820179279U CN210243833U CN 210243833 U CN210243833 U CN 210243833U CN 201820179279 U CN201820179279 U CN 201820179279U CN 210243833 U CN210243833 U CN 210243833U
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 title description 8
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims description 10
- 229910000746 Structural steel Inorganic materials 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a drainage box culvert structure reinforcing steel bar distribution detection structure based on a geological radar method, which comprises at least one measuring line arranged on the surface of the drainage box culvert, wherein the measuring line is formed by once detection of a geological radar at intervals of a set distance, and the geological radar is formed by combining a transmitting antenna and a receiving antenna at a fixed interval; the detection method comprises the steps that a geological radar formed by combining a transmitting antenna and a receiving antenna at a fixed interval is arranged on a first measuring point of a measuring line, and the geological radar is used for detecting a drainage box culvert at the measuring point; and sequentially completing detection at the positions of the measuring points along the measuring lines, processing the obtained high-frequency electromagnetic wave reflection signals to obtain a geological radar method profile map, and determining the distribution condition of the steel bars in the drainage box culvert through the geological radar method profile map. The utility model has the advantages that: the detection method is simple and convenient, the core is not required to be drilled, and the distribution of the structural steel bars of the drainage box culvert can be rapidly and accurately detected by a non-damaged method.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering detects and tests, concretely relates to drainage box culvert structure reinforcing bar distributes and detects structure based on geological radar method.
Background
The large-scale drainage box culvert is an important basic measure of a municipal drainage system and plays an important role in ensuring the collection, transportation and treatment of municipal sewage and maintaining the daily operation of cities. Along with the rapid development of urban construction, the traffic is increasingly busy, the aggravation of road load, the road widening reconstruction and other peripheral engineering activities are more and more affected, and therefore certain potential safety hazards exist in the large drainage box culvert which is generally maintained for a long time at the present stage. Wherein the seepage phenomenon of large-scale drainage box culvert takes place occasionally, discovers through the excavation, and the bulk reason of seepage comes from box culvert overall structure and receives destruction, for example soaks in sewage for a long time, and box culvert inboard surface layer concrete receives sewage and erodees and suffer the corruption for the serious phenomenon of corroding often appears in box culvert inner structure reinforcing bar.
The overall structure of box culvert is being maintained to a certain extent to the inside reinforcing bar of box culvert, if inside reinforcing bar corrodes seriously, the overall structure of box culvert can receive the influence, has not only shortened the life of structural system, has increased the maintenance cost, also brings adverse effect for municipal sewage's daily processing, seriously endangers the order of city normal operation.
Disclosure of Invention
The utility model aims at providing a drainage box culvert structure distribution of reinforcement detects structure based on above-mentioned prior art's weak point according to above-mentioned prior art, should detect the structure and arrange a plurality of survey lines on drainage box culvert surface, detect each measurement station on it along the survey line in proper order through the geological radar to obtain the geological radar method section view in the survey line coverage, with the reinforcing bar distribution condition in confirming the drainage box culvert.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
the utility model provides a drainage box culvert structure reinforcing bar distribution detects structure based on geological radar method, its characterized in that detect the structure including arranging in at least one survey line on drainage box culvert surface, the survey line is once detected by geological radar every interval set distance and is formed, geological radar is formed with the fixed spacing combination by transmitting antenna and receiving antenna.
The measuring line can be one or two of a main rib measuring line and a stirrup measuring line.
The main rib measuring line and the arrangement direction of the main ribs in the drainage box culvert form an included angle of 80-90 degrees; the stirrup measuring line and the arrangement direction of the stirrups in the drainage box culvert form an included angle of 80-90 degrees.
The measuring lines are arranged on one or more positions on the upper surface and two side surfaces of the drainage box culvert.
And a plurality of measuring points are distributed on the measuring line at intervals.
A detection method related to any drainage box culvert structural steel bar distribution detection structure based on a geological radar method is characterized by comprising the following steps: arranging at least one measuring line along the surface of the drainage box culvert; arranging a geological radar formed by combining a transmitting antenna and a receiving antenna at a fixed interval on a first measuring point of the measuring line, and detecting the drainage box culvert at the measuring point by using the geological radar; and sequentially completing detection at the positions of the measuring points along the measuring lines, processing the obtained high-frequency electromagnetic wave reflection signals to obtain a geological radar method profile map, and determining the distribution condition of the steel bars in the drainage box culvert through the geological radar method profile map.
And at the position of the measuring point, the transmitting antenna in the geological radar transmits a high-frequency electromagnetic wave signal into the drainage box culvert, and when the high-frequency electromagnetic wave signal reaches the interface surface between the steel bar and the concrete medium around the steel bar in the drainage box culvert, a high-frequency electromagnetic wave reflection signal is generated and received by the receiving antenna.
The reinforcing steel bars refer to main reinforcements and stirrups in the drainage box culvert structure.
The method for judging the distribution of the steel bars in the drainage box culvert comprises the following steps: in the geological radar cross-section diagram, the position of the steel bar in the drainage box culvert is represented as a high-frequency electromagnetic wave reflection signal which is different from the interface of the steel bar and the surrounding concrete medium.
The utility model has the advantages that: the detection method is simple and convenient, the core is not required to be drilled, and the distribution of the structural steel bars of the drainage box culvert can be rapidly and accurately detected by a non-damaged method.
Drawings
FIG. 1 is a schematic diagram of the present invention, in which a geological radar method is used to arrange main reinforcement survey lines along the surface of a drainage box culvert for detection;
FIG. 2 is a schematic view of the present invention, in which a stirrup measuring line is arranged along the surface of a drainage box culvert by a geological radar method for detection;
fig. 3 is the utility model discloses well utilize the geological radar method to carry out drainage box culvert and examine time measuring section view.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example with reference to the accompanying drawings, for the understanding of those skilled in the art:
referring to fig. 1-3, the symbols in the figures are: drainage box culvert 1, main muscle 2, stirrup 3, survey line 4, transmitting antenna 5, receiving antenna 6, geological radar 7.
Example (b): as shown in fig. 1, 2 and 3, the embodiment specifically relates to a drainage box culvert structural reinforcement distribution detection structure based on a geological radar method, the detection structure comprises a plurality of measuring lines 4 arranged on the surface of a drainage box culvert 1, the measuring lines 4 are used for providing a guiding effect for a subsequent geological radar 7, and a plurality of measuring points are distributed on the measuring lines 4 at equal intervals; the line 4 is formed by the detection of the geological radar once every certain distance.
As shown in fig. 1, 2 and 3, the survey lines 4 can be arranged on the upper surface and two side surfaces of the drainage box culvert 1 separately or simultaneously, and in addition, the survey lines 4 can be divided into main reinforcement survey lines 4 and stirrup survey lines 4 when actually arranged; as shown in figure 1, the main rib measuring line 4 forms an included angle of 80-90 degrees with the trend of the main rib 2 in the drainage box culvert 1 when being arranged; as shown in figure 2, the stirrup survey line 4 forms an angle of 80-90 degrees with the direction of the stirrups 3 in the drainage box culvert 1 when being arranged.
As shown in fig. 1, 2 and 3, the geological radar 7 is specifically formed by combining a transmitting antenna 5 and a receiving antenna 6 at a fixed interval, the transmitting antenna 5 and the receiving antenna 6 are also simultaneously connected with a host for data acquisition, and the frequency of the transmitting antenna 5 and the frequency of the receiving antenna 6 are not less than 400 MHz; in a particular arrangement, the midpoints of the connecting lines between the transmitting antennas 5 and the receiving antennas 6 are located at the corresponding station positions.
As shown in fig. 1, 2, and 3, the method for detecting the distribution of the steel bars in the drainage box culvert structure based on the geological radar method in this embodiment specifically includes the following steps:
(1) as shown in fig. 1 and 2, the trends of main reinforcements 2 and stirrups 3 in the drainage box culvert 1 are obtained according to the trend of the drainage box culvert 1, a plurality of measuring lines 4 are arranged on the surface of structural concrete of the large drainage box culvert 1, the arranged measuring lines 4 comprise the main reinforcement measuring lines 4 and the stirrup measuring lines 4, and as shown in fig. 1, the main reinforcement measuring lines 4 form an included angle of 80-90 degrees with the trend of the main reinforcements 2 in the drainage box culvert 1 when being arranged; as shown in fig. 2, the stirrup measuring line 4 forms an included angle of 80-90 degrees with the direction of the stirrups 3 in the drainage box culvert 1 during arrangement; wherein each measuring line 4 is formed by arranging a plurality of measuring points which are distributed at equal intervals;
(2) removing floating dust and residues at each measuring point position on the surface of the drainage box culvert 1, ensuring the flatness of a contact surface as much as possible, arranging a geological radar 7 at the first measuring point position of a certain measuring line 4, specifically arranging the middle point of a connecting line between a transmitting antenna 5 and a receiving antenna 6 at the first measuring point correspondingly, and fixing the spacing distance between the transmitting antenna 5 and the receiving antenna 6; then, detection is carried out, so that the transmitting antenna 5 transmits a high-frequency electromagnetic wave signal to the inside of the structure of the drainage box culvert 1, when the high-frequency electromagnetic wave signal reaches the interface between the steel bar (the main bar 2 or the stirrup 3) in the drainage box culvert 1 and the concrete medium around the steel bar, because the difference of the dielectric constant between the steel bar and the concrete is obviously obtained, a high-frequency electromagnetic wave reflection signal is generated at the interface between the steel bar and the concrete and is received by the receiving antenna 6;
(3) after the detection of the position of the first measuring point on the measuring line 4 is finished, moving the geological radar 7 to the position of the next measuring point along the measuring line 4, and detecting the measuring point according to the detection method in the step (2), so as to obtain a high-frequency electromagnetic wave reflection signal at the position of the measuring point; repeating the steps, and sequentially detecting all the measuring points on the measuring line 4; and all the measuring lines 4 on the surface of the drainage box culvert 1 are detected by the same method;
(4) carrying out data processing analysis on the collected high-frequency electromagnetic wave reflection signal data at different measuring point positions on each measuring line 4 to obtain a geological radar method profile within the coverage range of each measuring line 4; then, determining the exact distribution condition of the steel bars in the drainage box culvert 1 according to the obtained geological radar method profile map, wherein the steel bars specifically refer to a main bar 2 and a stirrup 3, and the concrete judgment is as follows: in a geological radar method profile map, the steel bars in the drainage box culvert 1 are reflected phenomena such as strong reflection and diffraction, which are different from surrounding concrete media, and the exact distribution positions of the steel bars in the drainage box culvert 1 are judged according to the reflection phenomena, so that the distribution conditions of the main structural steel bars 2 and the stirrups 3 in the drainage box culvert 1 are determined.
Claims (2)
1. A drainage box culvert structure steel bar distribution detection structure based on a geological radar method is characterized in that the detection structure comprises at least one measuring line arranged on the surface of a drainage box culvert, the measuring line is formed by once detection of a geological radar at intervals of a set distance, and the geological radar is formed by combining a transmitting antenna and a receiving antenna at a fixed interval; the measuring lines comprise main reinforcement measuring lines and stirrup measuring lines; the main rib measuring line and the arrangement direction of the main ribs in the drainage box culvert form an included angle of 80-90 degrees; the stirrup measuring line and the arrangement direction of the stirrups in the drainage box culvert form an included angle of 80-90 degrees; the measuring lines are arranged on one or more positions on the upper surface and two side surfaces of the drainage box culvert.
2. The structure for detecting the distribution of the steel bars in the drainage box culvert structure based on the geological radar method as claimed in claim 1, wherein a plurality of measuring points are distributed on the measuring line at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820179279.8U CN210243833U (en) | 2018-02-02 | 2018-02-02 | Drainage box culvert structure reinforcing bar distribution detects structure based on geological radar method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820179279.8U CN210243833U (en) | 2018-02-02 | 2018-02-02 | Drainage box culvert structure reinforcing bar distribution detects structure based on geological radar method |
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| CN210243833U true CN210243833U (en) | 2020-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415610A (en) * | 2020-10-30 | 2021-02-26 | 上海二十冶建设有限公司 | Box culvert main body structure quality detection method based on geological radar method |
-
2018
- 2018-02-02 CN CN201820179279.8U patent/CN210243833U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415610A (en) * | 2020-10-30 | 2021-02-26 | 上海二十冶建设有限公司 | Box culvert main body structure quality detection method based on geological radar method |
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Address after: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee after: Shanghai Survey, Design and Research Institute (Group) Co.,Ltd. Address before: 200093 No. 38 Shui Feng Road, Yangpu District, Shanghai. Patentee before: SGIDI ENGINEERING CONSULTING (Group) Co.,Ltd. |
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| CP03 | Change of name, title or address |