CN219956531U - Main cable empty state degree control measurement reference system of flat cable bridge - Google Patents
Main cable empty state degree control measurement reference system of flat cable bridge Download PDFInfo
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- CN219956531U CN219956531U CN202320651433.8U CN202320651433U CN219956531U CN 219956531 U CN219956531 U CN 219956531U CN 202320651433 U CN202320651433 U CN 202320651433U CN 219956531 U CN219956531 U CN 219956531U
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- leveling rod
- cable
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- rear view
- main cable
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- 238000005259 measurement Methods 0.000 title claims description 13
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
The utility model provides a measuring and referencing system for controlling the state of a main cable of a flat cable bridge in a cable-free state, which comprises a level gauge, a rear view leveling rod and a front view leveling rod; the bottom end of the rear view leveling rod is arranged on the upper surface of the main rope of the bridge abutment cable saddle at one side; the front viewpoint leveling rod is arranged on the ground fixed attachments between the bridge abutments at two sides, the height of the front viewpoint leveling rod is adjustable, and the bottom end of the front viewpoint leveling rod is a main cable empty cable state allowed maximum error mark reference point; the leveling instrument is arranged between the front view leveling rod and the rear view leveling rod and is used for respectively measuring the height of the rear view leveling rod and the height of the front view leveling rod, and the height of the front view leveling rod is adjusted according to the measured height of the rear view leveling rod. The system marks the reference point by determining the maximum allowable loss degree of the main cable in the empty cable state, so that the reference is provided for the minimum allowable point of the main cable in the empty cable state, and the laying work is conveniently carried out.
Description
Technical Field
The utility model relates to the technical field of bridge construction, in particular to a measuring and reference system for controlling the degree of loss of a main cable state of a flat cable bridge.
Background
The flat cable bridge can adapt to various terrains and geological conditions, the application of the flat cable bridge is very wide, and the flat cable bridge scheme has strong competitive advantages no matter the flat cable bridge is a temporary construction bridge with large tonnage and large span, or a special pedestrian bridge for facilitating personnel passage or travel or a special bridge constructed for municipal pipeline and mine material transportation. The flat cable bridge has a simple structure and mainly comprises an anchorage, a main cable, a stabilizing system, a connecting part, a bridge deck system and the like.
Main cable empty state degree of losing adjustment control is an important content in the flat cable bridge construction, at present, total station measurement control is generally adopted under the empty cable state, but because the main cable in the empty cable state is suspended, a platform cannot be formed, personnel cannot support the rod for measurement, no prism can be adopted, the minimum value is obtained after multiple times of comparison because the main cable cannot be hit to the lowest point in the no prism, and the time is long.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art, and provides a measuring and reference system for controlling the state of a main cable and the cable loss of a flat cable bridge, which is simple and convenient to operate and short in time.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a main cable empty state degree losing control measurement reference system of a horizontal pulling cable bridge comprises a level gauge, a rear view level gauge and a front view level gauge;
the bottom end of the rear view leveling rod is arranged on the upper surface of the main rope of the bridge abutment cable saddle at one side;
the front viewpoint leveling rod is arranged on the ground fixed attachments between the bridge abutments at two sides, the height of the front viewpoint leveling rod is adjustable, and the bottom end of the front viewpoint leveling rod is a main cable empty cable state allowed maximum error mark reference point;
the leveling instrument is arranged between the front view leveling rod and the rear view leveling rod and is used for respectively measuring the height of the rear view leveling rod and the height of the front view leveling rod, and the height of the front view leveling rod is adjusted according to the measured height of the rear view leveling rod.
Basically, the rear view leveling rod elevation, the main cable diameter and the main cable empty state allow maximum loss = the front view leveling rod elevation, wherein the main cable diameter and the main cable empty state allow maximum loss to be known values, and the rear view leveling rod elevation and the front view leveling rod elevation are measured values.
The base is characterized in that the fixed attachments on the bottom surface are ground natural objects or fixing frames or building components.
Based on the above, the specification and model of the rear view leveling rod and the front view leveling rod are identical.
Based on the above, the distance between the front view leveling rod and the rear view leveling rod is less than or equal to 20m.
Based on the above, the level is supported fixedly through the mounting bracket.
The bottom end of the rear view leveling rod is contacted with the upper surface of the main rope of the bridge abutment cable saddle.
Based on the above, the rear view leveling rod is fixed on the abutment through the fixed bracket.
Compared with the prior art, the utility model has substantial characteristics and progress, and in particular has the following advantages:
and superposing the known main cable diameter and the maximum allowable loss degree of the main cable empty cable state on the main cable position on the abutment attached by the rear view leveling rod as a reference, and adjusting the height of the front view leveling rod.
Drawings
FIG. 1 is a schematic diagram of a system for measuring and referencing the loss of control of the state of a main cable of a flat cable bridge in the utility model.
Fig. 2 is a schematic diagram of the usage of the measuring and reference system for controlling the degree of loss of control of the state of the main rope of the flat cable bridge in the main rope tensioning operation.
In the figure: 1. a cable saddle; 2. a main rope; 3. a bridge abutment; 4. a rearview leveling rod; 5. a level gauge; 6. fixing attachments on the ground; 7. the main cable empty cable state allows the maximum error degree to mark a reference point; 8. a forward looking leveling rod; 9. main rope in empty cable state; 10. the lowest part of the main rope.
Detailed Description
The technical scheme of the utility model is further described in detail through the following specific embodiments.
As shown in fig. 1, the measuring reference system for the state loss degree control of the main cable of the horizontal cable bridge comprises a level gauge 5, a rear view leveling rod 4 and a front view leveling rod 8, wherein the specifications and the models of the rear view leveling rod and the front view leveling rod are consistent, and the measuring accuracy can be ensured.
The bottom end of the rear view leveling rod 4 is contacted with the upper surface of the main rope 2 of the cable saddle 1 of the abutment 3 at one side, and the rear view leveling rod 4 is integrally fixed on the abutment 3 and used as a measuring datum reference point.
The front view leveling rod 8 is arranged on the ground fixed attachment 6 between bridge decks at two sides, the height of the front view leveling rod 8 is adjustable, the bottom end of the front view leveling rod 8 is a main cable empty cable state allowing maximum error marking reference point 7, specifically, the ground fixed attachment 6 can be a natural object positioned on the ground or a fixed frame installed manually or a building member forming a part of a bridge, and the distance between the front view leveling rod and the rear view leveling rod is less than or equal to 20m so as to facilitate erection of the system and avoid the influence of over-deep gaps on erection difficulty.
The level 5 is arranged between the front view leveling rod 8 and the rear view leveling rod 4, and is supported and fixed through a mounting frame. The leveling instrument 5 is used for measuring the height of the rear view leveling rod 4 and the height of the front view leveling rod 8 respectively, and the height of the front view leveling rod 8 is adjusted according to the measured height of the rear view leveling rod 4, and the adjusting basis is as follows: rear view leveling rod elevation + main cable diameter + main cable state allowed maximum loss = front view leveling rod elevation, wherein main cable diameter and main cable state allowed maximum loss are known values, rear view leveling rod elevation and front view leveling rod elevation are measured values, rear view leveling rod elevation is a reference value, and front view leveling rod elevation is an adjustment value.
The operation procedure is illustrated:
as shown in fig. 1, step 1: and installing an erection level gauge 5 at a proper position on the site, and carrying out observation operation after erection is completed. The bottom end of the rear view leveling rod 4 contacts with the upper surface of the main rope 2 of the cable saddle 1 of the bridge abutment 3, and the front view leveling rod 8 is arranged on the ground fixed attachment 6.
Step 2: reading the view point level height of 0.980m, and calculating the front view point level height according to the following formula:
the rear view level elevation 0.980m + main cable diameter 0.042m + main cable empty state allows a maximum loss of 0.354m = front view level elevation 1.376m.
And according to the calculated front view level height of 1.376m, adjusting the height position of the front view level 8 to ensure that the viewing height is equal to the calculated front view level height position of 1.376m, and marking the bottom of the front view level 8, namely the maximum loss level height marking reference point 7 allowed by the main cable empty cable state.
As shown in fig. 2, step 3: in the main rope 8 tensioning operation, an erection level is installed at a suitable position on the site, and after the erection is completed, an observation operation is performed. The rear viewing level elevation is the level elevation of the main cable empty cable state allowed maximum error marking reference point 7, and is considered as the empty cable state main cable 9, if the lower surface of the lowest part 10 of the main cable is above the level elevation, the requirement is judged to be met, otherwise, the requirement is not met, and the tensioning is needed to be continued.
Finally, it should be noted that while the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present patent.
Claims (8)
1. The utility model provides a flat cable bridge main rope empty cable state degree of losing control measurement reference system which characterized in that: comprises a level gauge, a rear view level gauge and a front view level gauge;
the bottom end of the rear view leveling rod is arranged on the upper surface of the main rope of the bridge abutment cable saddle at one side;
the front viewpoint leveling rod is arranged on the ground fixed attachments between the bridge abutments at two sides, the height of the front viewpoint leveling rod is adjustable, and the bottom end of the front viewpoint leveling rod is a main cable empty cable state allowed maximum error mark reference point;
the leveling instrument is arranged between the front view leveling rod and the rear view leveling rod and is used for respectively measuring the height of the rear view leveling rod and the height of the front view leveling rod, and the height of the front view leveling rod is adjusted according to the measured height of the rear view leveling rod.
2. The flat cable bridge main cable empty state loss control measurement reference system according to claim 1, wherein: rear view leveling rod elevation + main cable diameter + main cable empty cable state allowed maximum loss = front view leveling rod elevation, wherein main cable diameter and main cable empty cable state allowed maximum loss are known values, and rear view leveling rod elevation and front view leveling rod elevation are measured values.
3. The flat cable bridge main cable empty state loss control measurement reference system according to claim 2, wherein: the ground fixed attachment is a ground natural object or a fixed frame or a building component.
4. A flat cable bridge main cable state loss control measurement reference system according to claim 1 or 2 or 3, wherein: the specification and the model of the rear view leveling rod are consistent with those of the front view leveling rod.
5. The flat cable bridge main cable empty state loss control measurement reference system according to claim 4, wherein: the distance between the front viewpoint leveling rod and the rear viewpoint leveling rod is less than or equal to 20m.
6. The flat cable bridge main cable empty state loss control measurement reference system according to claim 5, wherein: the level gauge is supported and fixed through the mounting frame.
7. The flat cable bridge main cable empty state loss control measurement reference system according to claim 6, wherein: the bottom of the rear view leveling rod is contacted with the upper surface of the main rope of the bridge abutment rope saddle.
8. The flat cable bridge main cable empty state loss control measurement reference system according to claim 7, wherein: the rear view leveling rod is fixed on the abutment through a fixed bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320651433.8U CN219956531U (en) | 2023-03-29 | 2023-03-29 | Main cable empty state degree control measurement reference system of flat cable bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320651433.8U CN219956531U (en) | 2023-03-29 | 2023-03-29 | Main cable empty state degree control measurement reference system of flat cable bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219956531U true CN219956531U (en) | 2023-11-03 |
Family
ID=88537397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320651433.8U Active CN219956531U (en) | 2023-03-29 | 2023-03-29 | Main cable empty state degree control measurement reference system of flat cable bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219956531U (en) |
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2023
- 2023-03-29 CN CN202320651433.8U patent/CN219956531U/en active Active
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