CN105627896A - Bridge flexibility detection device and detection method - Google Patents
Bridge flexibility detection device and detection method Download PDFInfo
- Publication number
- CN105627896A CN105627896A CN201610017050.XA CN201610017050A CN105627896A CN 105627896 A CN105627896 A CN 105627896A CN 201610017050 A CN201610017050 A CN 201610017050A CN 105627896 A CN105627896 A CN 105627896A
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- deflection
- steel wire
- dial gauge
- bridge
- fixed
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
Abstract
The invention discloses a bridge flexibility detection device and a detection method, belonging to the bridge detection field. The detection device comprises a steel wire suspended on the bottom of the bridge, a flexibility detector connected to the lower end of the steel wire and a fixing seat fixed on the flexibility detector; the flexibility detector comprises a detector frame and an indication gauge fixed in the detector frame; the testing rod of the indication gauge is upwardly vertical; and the top end of the test rod is connected to the lower end of the steel wire. The detection method of the invention is based on the flexibility detector, cancels a suspension weight, reduces the adverse affect on the test result by the wind force, adopts the anchored steel chisel to replace the magnetic force table seat, saves the time and cost for establishing the platform, provides convenient and efficiency to the on-site installation and improves the working efficiency. The invention can effectively guarantee the resetting of the indication gauge test rod, greatly improves the accuracy and stability of the flexibility test. The indication gauge on the detector is provided with a spring which provides the needed pulling force and prevents the error caused by the deformation of the steel wire under stress, and the detection accuracy is improved.
Description
Technical field
The invention belongs to bridge load monitoring field, be specifically related to a kind of deflection of bridge span detecting device and detection method.
Background technology
What traditional bridge deflection measurement generally adopted is the method hanging steel wire+weight+dial gauge. The method is to arrange suspension centre bottom beam slab, hangs steel wire on suspension centre, suspends weight bottom steel wire in midair, sets up dial gauge below weight, and dial gauge is arranged on firm ground or platform by magnetic stand. This measuring method is adopted to have the disadvantage that:
1, traditional method must use the equipment such as steel wire, weight, magnetic stand, and the weight of a set of equipment is generally at about 5kg, and measuring a bridge block at least needs 20 sets, about 100kg. These equipment volume are big, quantity is many, weight is big, not portable.
2, traditional method is subject to windage during weight suspention will random rock, and then causes dial gauge measuring staff and gauge stand wobble effects measurement result.
3, in traditional method, magnetic stand table folder spring fatigue within screw tension, dial gauge causes stiffness factor to diminish, the unfavorable factor such as contamination by dust or intrusion all can affect the active homing of dial gauge measuring staff.
4, shallow water mud location, traditional method needs to set up firm magnetic stand platform, constructional difficulties, and cost is high, and degree of accuracy not easily ensures.
Summary of the invention
It is convenient and swift that the technical issues that need to address of the present invention are to provide a kind of in-site installation, efficiency height, by measuring environmental effect, measures deflection of bridge span detecting device and detection method accurately.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of deflection of bridge span detecting device, including the steel wire being suspended to bottom bridge, it is connected to the deflection check-up device of steel wire lower end, and the fixing seat of fixing deflection check-up device, described deflection check-up device includes apparatus frame, being fixed on the dial gauge in apparatus frame, straight up, measuring staff top connects steel wire lower end to the measuring staff of dial gauge.
Further, measuring staff top arranges extension rod, and extension rod top arranges the upper connecting hole connecting steel wire, and measuring staff is connected with steel wire lower end by the upper connecting hole of extension rod.
Preferably, described apparatus frame upper end arranges limiting plate, and limiting plate arranges through hole, and extension rod is traverse from through hole, and through hole centrage overlaps with extension rod centrage; Apparatus frame lower end arranges the connecting hole of connection fixing base.
Preferably, described limiting plate be arranged two in parallel.
Further, described dial gauge also setting up spring, spring one end is fixed on dial gauge housing, and the other end is fixed on measuring staff, spring center line and measuring staff centerline parallel.
Further, described fixing seat adopts anchoring drill rod, anchoring drill rod upper end to arrange the connection ring mated with apparatus frame lower end connecting hole, and subsurface is squeezed in anchoring drill rod lower end.
Based on a kind of deflection of bridge span detection method of above-mentioned deflection detector, comprise the following steps:
1) suspension wire: suspension centre is set on beam slab bottom bridge, steel wire one end is fixed on suspension centre;
2) anchoring drill rod is fixed: anchoring drill rod is squeezed into subsurface certain distance, it is ensured that anchoring drill rod is stablized firm;
3) deflection check-up device is installed: deflection check-up device is fixed on anchoring drill rod top, described deflection check-up device includes apparatus frame, dial gauge, extension rod, limiting plate with through hole, described dial gauge is fixed in apparatus frame, extension rod top connects steel wire lower end, extension rod lower end connects dial gauge measuring staff top through the through hole of limiting plate, and anchoring drill rod top is fixed in apparatus frame lower end;
4) DATA REASONING: after installation, records dial gauge reading, records dial gauge reading when bridge force-bearing, or when variations in temperature, repeats record dial gauge reading with certain time interval, calculate amount of deflection.
Owing to have employed technique scheme, the technological progress that the present invention obtains is:
The deflection of bridge span detection method that the present invention adopts is based on the deflection of bridge span detector of the present invention, eliminate suspention weight, reduce the wind-force adverse effect to test result, anchoring drill rod is adopted to replace magnetic stand, can be used for the locations such as common ground, shallow water, mud, saving time and the cost of setting up platform, in-site installation is convenient and swift, improves work efficiency. Detector of the present invention can be effectively ensured the reset of dial gauge measuring staff, substantially increases degree of accuracy and the stability of deflection test. The dial gauge of detector arranges spring, it is provided that measure required pulling force the error deformation owing to steel wire pressurized causes can stopped and cause, improve detection degree of accuracy.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of deflection check-up device of the present invention;
Fig. 2 is deflection check-up device side-looking structural representation of the present invention;
Fig. 3 is the test attachment structure schematic diagram during detection of present invention application deflection check-up device;
Wherein: 1, upper connecting hole, 2, limiting plate, 3, extension rod, 4, spring, 5, dial gauge, 6, measuring staff, 7, apparatus frame, 8, connecting hole, 10, bridge, 20, steel wire, 30, deflection check-up device, 40, anchoring drill rod, 50, ground.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further details:
The measurement apparatus of deflection of bridge span and measuring method thereof when the present invention is a kind of bridge force-bearing or variations in temperature, the present invention is different from the method for tradition steel wire+weight+dial gauge method, eliminate weight, deflection check-up device of the present invention is adopted to detect, not in use by magnetic stand, fixing simple, it is adaptable to various complex environments.
As shown in Figure 1, Figure 2 and Figure 3, deflection check-up device 30 of the present invention includes apparatus frame 7 and the dial gauge 5 being fixed in apparatus frame 7, replace traditional magnetic stand with apparatus frame 7, and apparatus frame lower end arranges the connecting hole 8 of connection fixing base, facilitate the fixing of this deflection check-up device 30.
Dial gauge is fixed in apparatus frame, and after fixing, straight up, measuring staff 6 top connects steel wire 20 lower end to the measuring staff 6 of dial gauge. Now the centrage of apparatus frame is vertical, say, that apparatus frame 7 is operationally vertical, and measuring staff 6 is also vertical, it is ensured that the measuring staff 6 of dial gauge 5 is except bearing vertical pressure, not by the interference of the power in other direction.
During in order to ensure to measure, the measuring staff 6 of dial gauge can be vertical state, also sets up extension rod 3 on measuring staff 6 top, and extension rod 3 top arranges the upper connecting hole 1 connecting steel wire 20, and measuring staff 6 is connected with steel wire 20 lower end by the upper connecting hole 1 of extension rod 3. Being all vertical state to make extension rod 3 and apparatus frame 7, both are consistent, and described apparatus frame 7 upper end arranges limiting plate 2, and limiting plate 2 arranges through hole, extension rod 3 traverse from through hole, and through hole centrage overlaps with extension rod 3 centrage; Described limiting plate can be arranged two in parallel, it is also possible to is the limiting plate of U-shaped, so arranges and can ensure that extension rod 3 and apparatus frame are all vertical.
In order to eliminate the phenomenon of steel wire pressurized deformation and dial gauge clamping stagnation, eliminating the error thus caused, described dial gauge 5 also sets up spring 4, spring 4 one end is fixed on dial gauge housing, the other end is fixed on measuring staff 6, spring 4 centrage and measuring staff 6 centerline parallel.
In order to facilitate the fixing of deflection check-up device 30, described fixing seat adopts anchoring drill rod 40, anchoring drill rod 40 upper end to arrange the connection ring mated with apparatus frame 7 lower end connecting hole 8, and ground is squeezed into 50 times in anchoring drill rod 40 lower end, anchoring drill rod 40 is adapted to the environment of Various Complex, it is easy to installation settings. Certainly fixing seat can also adopt other fixing platform etc. easy to set up.
Based on the deflection check-up device 30 of the present invention, the deflection of bridge span detection method of the present invention, comprise the following steps:
1) suspension wire 20: arrange suspension centre on beam slab bottom bridge 10, are fixed on suspension centre by steel wire 20 one end;
2) anchoring drill rod 40 is fixed: anchoring drill rod 40 is squeezed into subsurface certain distance, it is ensured that anchoring drill rod 40 is stable firmly;
3) deflection check-up device is installed: deflection check-up device 30 is fixed on anchoring drill rod 40 top, described deflection check-up device 30 includes apparatus frame 7, dial gauge 5, extension rod 3, limiting plate 2 with through hole, described dial gauge 5 is fixed in apparatus frame 7, extension rod 3 top connects steel wire 20 lower end, extension rod 3 lower end connects dial gauge measuring staff 6 top through the through hole of limiting plate 2, and anchoring drill rod 40 top is fixed in apparatus frame 7 lower end;
4) DATA REASONING: after installation, records dial gauge reading, records dial gauge reading when bridge force-bearing, or when variations in temperature, repeats record dial gauge reading with certain time interval, calculate amount of deflection.
Claims (7)
1. a deflection of bridge span detecting device, it is characterized in that: include being suspended to the steel wire (20) of bridge (10) bottom, it is connected to the deflection check-up device (30) of steel wire (20) lower end, and the fixing seat of fixing deflection check-up device (30), described deflection check-up device (30) includes apparatus frame (7), being fixed on the dial gauge (5) in apparatus frame (7), straight up, measuring staff (6) top connects steel wire (20) lower end to the measuring staff (6) of dial gauge (5).
2. deflection of bridge span detecting device according to claim 1, it is characterized in that: measuring staff (6) top arranges extension rod (3), extension rod (3) top arranges the upper connecting hole (1) connecting steel wire, and measuring staff (6) is connected with steel wire (20) lower end by the upper connecting hole (1) of extension rod (3).
3. deflection of bridge span detecting device according to claim 2, it is characterized in that: described apparatus frame (7) upper end arranges limiting plate (2), arranging through hole, extension rod (3) traverse from through hole on limiting plate (2), through hole centrage overlaps with extension rod (3) centrage; Apparatus frame (7) lower end arranges the connecting hole (8) of connection fixing base.
4. deflection of bridge span detecting device according to claim 3, it is characterised in that: described limiting plate (2) be arranged two in parallel.
5. the deflection of bridge span detecting device according to any one of claim 1-4, it is characterized in that: described dial gauge (5) also sets up spring (4), spring (4) one end is fixed on dial gauge (5) housing, the other end is fixed on measuring staff (3), spring (4) centrage and measuring staff (3) centerline parallel.
6. linear vibrating screen according to claim 5, it is characterized in that described fixing seat adopts anchoring drill rod (40), anchoring drill rod (40) upper end arranges the connection ring mated with apparatus frame (7) lower end connecting hole (8), and anchoring drill rod (40) lower end is squeezed under ground (50).
7. a deflection of bridge span detection method, comprises the following steps:
1) suspension wire: suspension centre is set on beam slab bottom bridge, steel wire one end is fixed on suspension centre;
2) anchoring drill rod is fixed: anchoring drill rod is squeezed into subsurface certain distance, it is ensured that anchoring drill rod is stablized firm;
3) deflection check-up device is installed: deflection check-up device is fixed on anchoring drill rod top, described deflection check-up device includes apparatus frame, dial gauge, extension rod, limiting plate with through hole, described dial gauge is fixed in apparatus frame, extension rod top connects steel wire lower end, extension rod lower end connects dial gauge measuring staff top through the through hole of limiting plate, and anchoring drill rod top is fixed in apparatus frame lower end;
4) DATA REASONING: after installation, records dial gauge reading, records dial gauge reading when bridge force-bearing, or when variations in temperature, repeats record dial gauge reading with certain time interval, calculate amount of deflection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017050.XA CN105627896A (en) | 2016-01-12 | 2016-01-12 | Bridge flexibility detection device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017050.XA CN105627896A (en) | 2016-01-12 | 2016-01-12 | Bridge flexibility detection device and detection method |
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| CN105627896A true CN105627896A (en) | 2016-06-01 |
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| CN201610017050.XA Pending CN105627896A (en) | 2016-01-12 | 2016-01-12 | Bridge flexibility detection device and detection method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441054A (en) * | 2016-12-16 | 2017-02-22 | 中国建筑材料科学研究总院 | Wall structure deformation measuring device |
| CN106586834A (en) * | 2016-12-27 | 2017-04-26 | 中国冶集团有限公司 | Method and device for measuring downward deflection of middle section of crane jib online in real time |
| CN106650167A (en) * | 2017-01-03 | 2017-05-10 | 山东理工大学 | Simulated checking method for maximum limit deflection of high-strength level-one graded-stiffness leaf spring |
| CN109443673A (en) * | 2018-12-18 | 2019-03-08 | 四川省建筑科学研究院 | Deflection measuring apparatus and its measurement method |
| CN111537169A (en) * | 2020-05-11 | 2020-08-14 | 中国建筑第七工程局有限公司 | Movable bridge deflection detector |
| CN112857716A (en) * | 2021-01-22 | 2021-05-28 | 邹芳 | Bridge amount of deflection check out test set |
| CN114111541A (en) * | 2021-11-24 | 2022-03-01 | 长安大学 | Bridge dynamic deflection testing system and method based on stress rigidization effect |
| CN114199484A (en) * | 2021-11-22 | 2022-03-18 | 中城建勘(浙江)检测科技有限公司 | Movable bridge deflection detection equipment |
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| CN103791795A (en) * | 2014-02-24 | 2014-05-14 | 甘肃省交通科学研究院有限公司 | Bridge static load test displacement monitoring device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441054A (en) * | 2016-12-16 | 2017-02-22 | 中国建筑材料科学研究总院 | Wall structure deformation measuring device |
| CN106586834A (en) * | 2016-12-27 | 2017-04-26 | 中国冶集团有限公司 | Method and device for measuring downward deflection of middle section of crane jib online in real time |
| CN106650167A (en) * | 2017-01-03 | 2017-05-10 | 山东理工大学 | Simulated checking method for maximum limit deflection of high-strength level-one graded-stiffness leaf spring |
| CN106650167B (en) * | 2017-01-03 | 2019-12-27 | 山东理工大学 | Simulation verification algorithm for maximum limiting deflection of high-strength first-level gradient stiffness plate spring |
| CN109443673A (en) * | 2018-12-18 | 2019-03-08 | 四川省建筑科学研究院 | Deflection measuring apparatus and its measurement method |
| CN111537169A (en) * | 2020-05-11 | 2020-08-14 | 中国建筑第七工程局有限公司 | Movable bridge deflection detector |
| CN111537169B (en) * | 2020-05-11 | 2021-09-28 | 中国建筑第七工程局有限公司 | Movable bridge deflection detector |
| CN112857716A (en) * | 2021-01-22 | 2021-05-28 | 邹芳 | Bridge amount of deflection check out test set |
| CN114199484A (en) * | 2021-11-22 | 2022-03-18 | 中城建勘(浙江)检测科技有限公司 | Movable bridge deflection detection equipment |
| CN114199484B (en) * | 2021-11-22 | 2024-04-19 | 中城建勘(浙江)检测科技有限公司 | Portable bridge deflection check out test set |
| CN114111541A (en) * | 2021-11-24 | 2022-03-01 | 长安大学 | Bridge dynamic deflection testing system and method based on stress rigidization effect |
| CN114111541B (en) * | 2021-11-24 | 2024-01-19 | 长安大学 | Bridge dynamic deflection test system and method based on stress rigidization effect |
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Application publication date: 20160601 |