CN203069116U - Concrete hollow slab beam hinge joint damage detection device - Google Patents
Concrete hollow slab beam hinge joint damage detection device Download PDFInfo
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- CN203069116U CN203069116U CN 201320098227 CN201320098227U CN203069116U CN 203069116 U CN203069116 U CN 203069116U CN 201320098227 CN201320098227 CN 201320098227 CN 201320098227 U CN201320098227 U CN 201320098227U CN 203069116 U CN203069116 U CN 203069116U
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- probe
- steel plate
- hinge joint
- hollow slab
- concrete hollow
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Abstract
The utility model relates to the technical field of crack detection, and especially relates to a concrete hollow slab beam hinge joint damage detection device. The concrete hollow slab beam hinge joint damage detection device is characterized in that: a hinge joint meter consists of a probe, a vertical ruler, and upper and lower buoys; wherein the probe has an integrated structure, a left part and a right part of the probe are steel plates which are horizontal and parallel to each other, a middle part of the probe is a vertical steel plate, a bottom of the steel plate at the middle part of the probe is connected with the steel plate at the left part of the probe, a top of the steel plate at the middle part of the probe is connected with the steel plate at the right part of the probe, the vertical ruler clings to one end of the probe at the right side, and the vertical ruler is provided with the upper and lower buoys. The concrete hollow slab beam hinge joint damage detection device of the utility model has the advantages of small volume, light weight, no need for external power line, simple installation method, no need for drilling holes, no need for using motor equipment, capacity for effectively recording the maximum positive/negative relative displacement values of the slab beams at two sides a detected hinge joint position, having the precision reaching 1mm, having the measuring range reaching +-20mm, capacity for satisfying requirements of actual detection operation, capacity for effectively replacing the existing electric measurement equipment, capacity for realizing long-term monitoring, easy reading, no need for acquiring data at short range, etc.
Description
[technical field]
The utility model relates to the Crack Detection technical field, and is a kind of for the damaged pick-up unit of concrete hollow slab girder hinge seam specifically.
[background technology]
In the bridge superstructure of operation at present, concrete hollow slab girder is comparatively common a kind of version, and the parts that the two boards beam links to each other are the hinge seam, its concrete operations step is before plate-girder installs the back Surfacing Construction, rear pouring concrete (cementation of fissures) is carried out in splicing place to the two boards beam, utilize the concrete of new pouring and combining closely of steel bar stress and original structure, the one-piece construction of forming plate-girder-shear hinge (back deposit concrete and splice bar are combined closely)-plate-girder, by shear hinge Transfer of Shear between plate-girder, bear the effect of vehicle live load jointly.
Said structure characteristics just because of concrete hollow slab girder, cause the damaged Cracking Failure of hinge seam (shear hinge) position concrete of being responsible for Transfer of Shear easily, cause under the operation condition adjacent plate-girder to produce relative displacement in hinge seam position, when disease is serious even cause the stressed final structure of single-beam to destroy; Because hinge seam disease directly causes the change of the lateral stressed system of plate-girder, therefore carry out in the process of testing at the bridge that to superstructure is hollow slab girder, the inspection of stitching disease for hinge is the deciding factor of judging plate-girder power transmission situation and superstructure globality.
Quantification for hinge seam degree of disease, the method of mainly monitoring by the relative displacement of adjacent plate-girder being cut with scissors the seam position under the operation situation is determined at present, and for the monitoring of cutting with scissors seam position plate-girder relative displacement, mature methods is to adopt the electrical measurement displacement meter to be installed in hinge seam correspondence position at present, carry out real-time monitoring in conjunction with special-purpose collecting device and notebook computer, as the disclosed a kind of articulated slab beam bridge hinge seam detection method of domestic patent CN 102507667 A and pick-up unit, utilize the resistance-type displacement meter, the resistance-type displacement meter is installed on hinge seam place, the vertical relative displacement that makes hinge stitch the plate-girder of both sides causes that the resistance value of resistance-type displacement meter changes, by gathering the increased resistance value of resistance-type displacement meter, and the vertical relative displacement value of cutting with scissors the plate-girder of seam both sides in conjunction with the variation judgement of resistance value, and with its with can allow displacement range contrast, exceed as the relative displacement value of gathering and to allow displacement range, judge that then the hinge seam damages or destroys; But do not exceed allowed band as the vertical relative displacement value of gathering; Judge that then the hinge seam is normal.But this kind electric measuring method exists following advantage and deficiency, advantage: 1) electric measuring method can obtain adjacent plate-girder at the moving relatively displacement time-history curves of hinge seam position, and the data message amount is big; 2) the electric measuring method precision is higher, and measuring accuracy can reach 0.01mm; But also exist deficiency: 1) electric measuring method need insert power supply; 2) electric measuring method need be arranged power lead and data line, for having relatively high expectations of field condition and space geometry size; 3) electric measuring method long term monitoring cost is higher.
[summary of the invention]
The purpose of this utility model is to solve existing electric measuring method and device above shortcomings, and a kind of detection method can be used for recording the moving relatively peaked pick-up unit of displacement and the use of this device between the plate-girder of mechanical type hinge seam position the time is provided.
For achieving the above object, design the damaged pick-up unit of a kind of concrete hollow slab girder hinge seam, it is characterized in that cutting with scissors the seam meter is made up of probe, upright chi and upper and lower buoy, described probe is integral structure, and probe left part and right part are level and the steel plate that is parallel to each other, and the probe middle part is vertical steel plate, steel plate bottom, probe middle part linking probe left part steel plate, steel plate top, probe middle part linking probe right part steel plate, described upright chi is close to probe right side one end, and upright chi is provided with upper and lower buoy.
Described probe left bottom is by bolt linking probe fixed head.
Described upright chi bottom connects upright chi fixed head by bolt, and upright chi fixed head thickness is identical with the probe stationary plate.
The utility model is compared with existing electrical measurement displacement meter, has following advantage:
1) volume is little, in light weight, does not need circumscripted power line;
2) installation method is simple at the bottom of the beam, adopts seccotine to install, and does not need boring, need be by motor device;
3) maximum that can effectively record hinge seam both sides, the position plate-girder of surveying just/negative is to shift value, precision reaches 1mm, range ± 20mm satisfies the actual detected requirements of one's work, can effectively substitute to have electric logging equipment now;
4) can realize that long term monitoring, reading are easy to read, and do not need closely image data.
[description of drawings]
Fig. 1 is one-piece construction synoptic diagram of the present utility model;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
1. probes, 2. buoys, 3. upright chis among the figure.
[embodiment]
For making the purpose of this utility model, principle and product configurations more cheer and bright, now reaching specific embodiment by reference to the accompanying drawings is further elaborated, believe for a person skilled in the art and can realize that the realization of the technical solution of the utility model specifies with the following example:
Embodiment
The concrete hollow slab girder hinge seam damage detection device that present embodiment is, it is the hinge seam meter that mechanically records the moving relatively displacement extreme value of plate-girder hinge seam position, this device hollow slab girder hinge seam on the section bridge of Shanghai G1501 north has carried out site test, as Fig. 1, Fig. 2 and shown in Figure 3, comprise probe 1, upright chi 3 and last, following buoy 2 is formed, probe 1 is to be pressed into stair-stepping integral structure by steel plate, probe left part and right part are level and the steel plate that is parallel to each other, the probe middle part is vertical steel plate, steel plate bottom, probe middle part linking probe left part steel plate, steel plate top, probe middle part linking probe right part steel plate, described upright chi 3 is close to probe right side one end, upright chi 3 is provided with, following buoy 2, described probe left bottom is by bolt linking probe fixed head, described upright chi bottom connects upright chi fixed head by bolt, and upright chi fixed head thickness is identical with the probe stationary plate.
Before actual detected, above-mentioned parts to be installed, the installation steps of hinge seam meter are as follows:
1) at first will found chi 3 and probe 1 and be installed in the position of closely cutting with scissors seam at the bottom of two beam beams respectively; Keeping parallelism is close on attention probe tips and upright chi plane;
2) buoy 3 moves and clamps to probe 1 position up and down, and the initial position S of record buoy
0, X
0(S
0Be last buoy initial position, X
0Be buoy initial position down), can adopt the method for Taking Pictures recording, need guarantee when clamping buoy that no vehicle passes through on bridge this moment, two tested plate-girders all remain static;
When 3) carrying out reading, read the existing position (S of upper and lower buoy respectively at every turn
1, X
1), it and initial position are compared, can obtain the extreme value of the moving relatively displacement of plate-girder hinge seam in the monitoring time section, and then the damaged situation of hinge seam is estimated.
Whole observation process need be by utility appliance such as external power supply, data acquisition equipment and computers, initial position at installation hinge seam meter back record buoy, note the time of collection and the position of buoy at that time in each gatherer process, both contrast the maximal value situation that can obtain hinge seam relative displacement between plate-girder mutually.Monitoring result shows, hinge seam meter actual measurement maximum immunity value and electric logging equipment actual measurement amount of deflection maximal value basically identical, and precision can satisfy actual testing requirement.
Claims (3)
1. a concrete hollow slab girder hinge is stitched damaged pick-up unit, it is characterized in that cutting with scissors the seam meter is made up of probe, upright chi and upper and lower buoy, described probe is integral structure, probe left part and right part are level and the steel plate that is parallel to each other, the probe middle part is vertical steel plate, steel plate bottom, probe middle part linking probe left part steel plate, steel plate top, probe middle part linking probe right part steel plate, described upright chi is close to probe right side one end, and upright chi is provided with upper and lower buoy.
2. the damaged pick-up unit of a kind of concrete hollow slab girder hinge seam as claimed in claim 1 is characterized in that described probe left bottom is by bolt linking probe fixed head.
3. the damaged pick-up unit of a kind of concrete hollow slab girder hinge seam as claimed in claim 1 is characterized in that described upright chi bottom connects upright chi fixed head by bolt, and upright chi fixed head thickness is identical with the probe stationary plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098227 CN203069116U (en) | 2013-03-04 | 2013-03-04 | Concrete hollow slab beam hinge joint damage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098227 CN203069116U (en) | 2013-03-04 | 2013-03-04 | Concrete hollow slab beam hinge joint damage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069116U true CN203069116U (en) | 2013-07-17 |
Family
ID=48767894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320098227 Expired - Lifetime CN203069116U (en) | 2013-03-04 | 2013-03-04 | Concrete hollow slab beam hinge joint damage detection device |
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| Country | Link |
|---|---|
| CN (1) | CN203069116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660259A (en) * | 2022-03-17 | 2022-06-24 | 中国民用航空飞行学院 | Airplane wing fatigue crack detection device |
-
2013
- 2013-03-04 CN CN 201320098227 patent/CN203069116U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114660259A (en) * | 2022-03-17 | 2022-06-24 | 中国民用航空飞行学院 | Airplane wing fatigue crack detection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |