CN104567641B - A kind of Short/Medium Span Bridge deflection measuring apparatus - Google Patents
A kind of Short/Medium Span Bridge deflection measuring apparatus Download PDFInfo
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- CN104567641B CN104567641B CN201510005413.3A CN201510005413A CN104567641B CN 104567641 B CN104567641 B CN 104567641B CN 201510005413 A CN201510005413 A CN 201510005413A CN 104567641 B CN104567641 B CN 104567641B
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- girder
- nose girder
- dial gauge
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- screw rod
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Abstract
The invention discloses a kind of Short/Medium Span Bridge deflection measuring apparatus, on girder to be tested, including post supporting device, rigid nose girder, electromechanical dial gauge, dial framework connects support meanss and data collecting system, in the spanning terminus of girder to be tested, one post supporting device is respectively set, post supporting device is by support base, the screw thread column on support base top, the cube attachment means of regulation height nut and regulation height nut top on screw thread column are constituted, rigid nose girder two ends are connected with cube attachment means respectively, scale is carved with the outside of rigid nose girder, steel hoop is installed with rigid nose girder, electromechanical dial gauge connects support meanss by dial framework and is connected with steel hoop, the bottom of dial framework connection support meanss keeps contacting with girder to be tested, electromechanical dial gauge is connected by data wire with data collecting system.The present invention in testing the test of small across footpath deflection of bridge span when, it is possible to achieve to measuring point be accurately positioned and data Quick Acquisition.
Description
Technical field
The present invention relates to a kind of Short/Medium Span Bridge deflection measuring apparatus, real bridge detection can be widely used in, experiment is ground
The various fields such as study carefully.
Background technology
It is very important to carry out periodic detection to bridge structure, can pass through the current shape of bridge test and evaluation bridge
Condition, operation and traffic safety for the later stage provide a reliable guarantee.So far, vertical displacement (is scratched in bridge machinery
Degree) measurement mainly use above two method, 1, set up displacement transducer method 2, optical instrument method.But it usually can be by outer
Boundary and the interference of human factor, cause data not measure accurately.
1st, support sets up displacement transducer method
Support sets up displacement transducer method：During bridge machinery, by setting up support between girder beam bottom and ground and adopting
Dial gauge is fixed on cradle top with dial framework, and girder bottom is withstood into dial gauge end.Such a method is only applicable to girder
Bottom surface from the ground apart from it is smaller when, generally less than 6m adopts this method feasible.For headroom it is too high when then drawback it is bigger, and
And it is comparatively laborious using preparation before test during such a method of testing, the installation and removal of such as displacement meter, dial gauge are time-consuming to take
Power, it usually needs manually set up scaffold and workbench or use lift, therefore greatly reduce operating efficiency.
2nd, optical instrument method
Optical instrument method is：During bridge machinery, by founding prism or scale at girder testing section, using total powerstation,
Laser flexometer or precision level observe the change of bridge vertical deflection.Such a method is in bridge machinery, it is necessary to artificial hand
Scale is helped, inevitable human error can be produced, and often (need to be by constant weight during static test by loading vehicle
Instruction carriage be parked on bridge, loaded using car weight and test Main Girder Deflection) influence, cause prism or scale not to stand in
Section is tested, or because total powerstation or laser flexometer sight are directly blocked in the arrangement for loading vehicle, causes test not carry out,
And the method for testing can only measure single section every time, it is impossible to continuously measure multiple sections.
The content of the invention
The invention aims to provide a kind of Short/Medium Span Bridge deflection measuring apparatus, when using hardly by extraneous and
The interference of human factor, at the same can realize to measuring point be accurately positioned and data Quick Acquisition.
To reach above-mentioned purpose, the present invention is implemented according to following technical scheme：
A kind of Short/Medium Span Bridge deflection measuring apparatus, on girder to be tested, including post supporting device, rigidity
Nose girder, electromechanical dial gauge, dial framework connection support meanss and data collecting system, are respectively set in the spanning terminus of girder to be tested
One post supporting device, the post supporting device is on the screw thread column, screw thread column on support base, support base top
Regulation height nut and the cube attachment means on regulation height nut top constitute, rigid nose girder two ends respectively with cube
Attachment means are connected, and are carved with the outside of rigid nose girder on scale, rigid nose girder and are installed with steel hoop, electromechanical dial gauge passes through table
Frame connection support meanss are connected with steel hoop, and the bottom of dial framework connection support meanss keeps contacting with girder to be tested, described
Electromechanical dial gauge is connected by data wire with data collecting system.It can determine that each girder to be tested breaks according to scale during test
The particular location in face, then electromechanical dial gauge is firmly installed on dial framework connecting rod in test section part and adjusted according to actual conditions
Electromechanical dial gauge and the distance on ground, it is ensured that indicator keeps certain precompression, is contacted always with works to be measured in testing,
Then it is observed work.
Further, air-bubble level is provided with the support base upper surface, support base lower end is provided with 3 lifting spiral shells
Mother, is in horizontality by adjusting lifting nut and the horizontal bubble instrument adjustable support base of observation, passes through support base
The bubble placed in the middle of air-bubble level shows, and can meet by such a method the detection of the bridge of different longitudinal slopes.
Specifically, the rigid nose girder is made up of stainless steel thin-wall nose girder and two ends are respectively equipped with nose girder spreading steel plate, lead
Beam spreading steel plate is provided with bolt hole, and cube attachment means are bolted with nose girder spreading steel plate, the rigid nose girder
Sliding rail is provided with upper surface, the sliding rail side of rigid nose girder upper end is provided with air-bubble level.For different across footpaths
Bridge can be by the rigid nose girder of bolt spreading, so that the need for meeting different across footpath bridge machineries.
Preferably, the dial framework connection support meanss are by upper screw rod, sleeve, lower screw rod and electromechanical dial gauge mounting bracket group
Into the upper end of the lower end of upper screw rod and lower screw rod is screwed in sleeve respectively, and electromechanical dial gauge mounting bracket is fixed by long nut
In lower screw rod lower end, the bottom of long nut is contacted with girder to be tested, and the electromechanical dial gauge is fixed on electromechanical dial gauge and installed
In the mounting hole set on frame.
Preferably, the steel hoop is C-shaped, and two openend inwalls are fixed with nut, through two openend outer walls be provided with
The screw rod that nut coordinates, the upper end of the upper screw rod passes through the side wall of steel hoop, and the both sides of steel hoop, which are respectively equipped with, is screwed in spiral shell
Nut on line.
Scale is carved with the rigid nose girder side of the present invention, therefore can easily position point position, can exist according to demand
Multiple dial gauges are installed on nose girder, data collecting system is connected to by data wire, data collecting system is multichannel, be can be achieved
Bridge structure multiple spot real-time continuous is sampled.
Compared with prior art, beneficial effects of the present invention：
Of the invention is simple in construction, novel in design reasonable, it is easy to install and implement, simple to operate efficient.
1st, the present invention can be by the rigid nose girder of bolt spreading, so as to meet different across footpath bridges for the bridge of different across footpaths
The need for beam is detected；
2nd, post supporting device of the invention can be adjusted cube connection by the nut on screw thread column and be filled
The height put, so as to directly improve rigid nose girder height, the detection of the bridge of different longitudinal slopes can be met by such a method；
3rd, the present invention can overcome bridge bottom can not lay electromechanical dial gauge or girder top loading car block optics
The drawbacks of tester sight；
4th, the present invention simultaneously and can be tested quickly for the bridge that transverse direction is made up of multi-disc cored slab or small box girder
Vertical deflection per a piece of beam；
5th, cost of implementation of the present invention is low, and using effect is good, is easy to promote the use of.
The summary present invention is simple in construction, and novel in design rationally functional reliability is high, and service life is long, in testing
During the test of small across footpath deflection of bridge span, it is possible to achieve to measuring point be accurately positioned and data Quick Acquisition, and not by any outer
Boundary and the interference of human factor, so as to greatly save the time, can substantially reduce personnel and financial resources input, therefore achievement of the present invention
Huge economic benefit can also be produced simultaneously by being worth with significant promotion and application.
Brief description of the drawings
Fig. 1 is the installation diagram of the present invention；
Fig. 2 is the use state figure of the present invention；
Fig. 3 is the top view of the support base of the present invention；
Fig. 4 is the front view of the support base of the present invention；
Fig. 5 is the structural representation of the rigid nose girder of the present invention；
Fig. 6 is enlarged drawing at Fig. 2 A；
Fig. 7 is enlarged drawing at Fig. 2 B；
Fig. 8 is enlarged drawing at Fig. 2 C；
Fig. 9 is enlarged drawing at Fig. 7 D；
Figure 10 is enlarged drawing at Fig. 7 E；
Figure 11 is enlarged drawing at Fig. 6 F.
Embodiment
With reference to specific embodiment, the invention will be further described, the illustrative examples and explanation invented herein
For explaining the present invention, but it is not as a limitation of the invention.
A kind of Short/Medium Span Bridge deflection measuring apparatus as shown in Figure 1, Figure 2, Figure 6 shows, on girder 14 to be tested,
There are bridge pier 15, including post supporting device, rigid nose girder 5, electromechanical dial gauge 11, dial framework connection support dress under girder 14 to be tested
Put with data collecting system 13, girder 14 to be tested spanning terminus respectively set a post supporting device, upright supports
Regulation height nut 3 and regulation height spiral shell of the device on the screw thread column 2, screw thread column on support base 1, support base top
The cube attachment means 4 on female 3 tops are constituted, and the rigid two ends of nose girder 5 are connected with cube attachment means 4 respectively, rigid nose girder 5
Outside, which is carved with scale, rigid nose girder 5, is installed with steel hoop 6, electromechanical dial gauge 11 by dial framework connect support meanss with
Steel hoop 6 is connected, and the bottom of dial framework connection support meanss keeps contacting with girder 14 to be tested, and the electromechanical dial gauge 11 leads to
Data wire 12 is crossed with data collecting system 13 to be connected.The tool of each section of girder to be tested 14 can be determined during test according to scale
Body position, then be firmly installed on electromechanical dial gauge 11 in dial framework connection support meanss and according to actual conditions in test section part
The electromechanical dial gauge 11 of regulation and the distance on ground, it is ensured that indicator keeps certain precompression, in testing always with master to be tested
Beam 14 is contacted, and is then observed work.Reference picture 1, can quickly measure girder 14 to be tested by data collecting system 13 and add
First reading numerical value before load, reference picture 2 can quickly measure the amount of deflection after girder 14 to be tested is loaded by data collecting system 13
Value.
As shown in Figure 3, Figure 4, it is in for ease of regulation support base 1 in horizontality, the upper surface of support base 1 and is provided with gas
Soaked level 16, support base 1 is provided with screw 101, and the lower end of screw thread column 2 is screwed in screw 101, under support base 1
End is in water provided with 3 lifting nuts 17 by adjusting lifting nut 17 and the horizontal adjustable support base 1 of bubble instrument 16 of observation
Level state, the detection of the bridge of different longitudinal slopes can be met by such a method.
As shown in figure 5, rigid nose girder 5 is made up of stainless steel thin-wall nose girder and two ends are respectively equipped with nose girder spreading steel plate 501,
Nose girder spreading steel plate 501 is provided with bolt hole 502, and cube attachment means 4 are connected with nose girder spreading steel plate 501 by bolt 503
Connect, sliding rail 504 is provided with the rigid upper surface of nose girder 5, the side of sliding rail 504 is provided with air-bubble level 16.For difference
The bridge of across footpath can be by the rigid nose girder 5 of the spreading of bolt 503, so that the need for meeting different across footpath bridge machineries.
As shown in Fig. 7, Fig. 9, Figure 10, steel hoop 6 is C-shaped, and two openend inwalls are fixed with nut 602, through two openings
Outer wall is held to be provided with the screw rod 601 coordinated with nut 602, the upper end of the upper screw rod 7 passes through the side wall of steel hoop 6, steel hoop 6
Both sides are respectively equipped with the nut 602 being screwed on screw thread.In use, steel hoop 6 is connected on rigid nose girder 5, will with screw rod 601
Steel hoop 6 is fastened on rigid nose girder 5, while can be determined to be easy to adjust steel during the particular location of each test section according to scale
Anchor ear 6.
As shown in Fig. 8, Figure 11, dial framework connects support meanss is pacified by upper screw rod 7, sleeve 8, lower screw rod 9 and electromechanical dial gauge
Shelve 10 compositions, the upper end of the lower end of upper screw rod 7 and lower screw rod 9 is screwed in sleeve 8 respectively, electromechanical dial gauge mounting bracket 10 leads to
Cross long nut 17 and be fixed on the lower lower end of screw rod 9, the bottom of long nut 17 is contacted with girder 14 to be tested, the electromechanical dial gauge 11
It is fixed in the mounting hole 18 set on electromechanical dial gauge mounting bracket 10.
When of the invention during assembling：First by support base 1 place with the spanning two ends of bridge 11 to be tested, have in support base 1
Air-bubble level 13, then illustrates that support base 1 occupy horizontal level after bubble is placed in the middle, then by screw thread column 2 and support bottom
Seat 1 is connected, and connected mode is that screw thread column is embedded in support base 1 by screw thread, then height adjusting nut 3 is passed through into screw thread
Be connected with screw thread column 2, then by cube attachment means 4 install with height adjusting nut 3, then rigid nose girder 5 with it is vertical
Cube attachment means 4 are connected by bolt 503, then steel hoop 6 and upper screw rod 7 are fixedly attached to rigidly lead by nut 602
The upper end of beam 5, upper screw rod 7 is connected by sleeve 8 with lower screw rod 9, then lower screw rod 9 is passed through into electromechanical dial gauge mounting bracket 10 and electromechanics
Dial gauge 11 is connected, measuring system whole installation.
Technical scheme is not limited to the limitation of above-mentioned specific embodiment, and every technique according to the invention scheme is done
The technology deformation gone out, each falls within protection scope of the present invention.
Claims (1)
1. a kind of Short/Medium Span Bridge deflection measuring apparatus, on girder to be tested, it is characterised in that including upright supports
Device, rigid nose girder, electromechanical dial gauge, dial framework connection support meanss and data collecting system, rise in the spanning of girder to be tested
Terminal respectively set a post supporting device, the post supporting device by support base, support base top screw thread column,
The cube attachment means of regulation height nut and regulation height nut top on screw thread column are constituted, in the support base
Air-bubble level is provided with end face, support base lower end is provided with 3 lifting nuts, and rigid nose girder two ends are connected with cube respectively
Device is connected, and is carved with the outside of rigid nose girder on scale, rigid nose girder and is installed with steel hoop, electromechanical dial gauge is connected by dial framework
Connect support meanss with steel hoop to be connected, the bottom of dial framework connection support meanss keeps contacting with girder to be tested, the electromechanics
Dial gauge is connected by data wire with data collecting system, and the rigid nose girder is made up and two ends point of stainless steel thin-wall nose girder
Not She You nose girder spreading steel plate, nose girder spreading steel plate is provided with bolt hole, and cube attachment means pass through with nose girder spreading steel plate
Sliding rail is provided with bolt connection, the rigid nose girder upper surface, the sliding rail side of rigid nose girder upper end is provided with bubble
Level meter, the dial framework connection support meanss are made up of upper screw rod, sleeve, lower screw rod and electromechanical dial gauge mounting bracket, upper screw rod
Lower end and the upper end of lower screw rod be screwed in respectively in sleeve, electromechanical dial gauge mounting bracket is fixed under lower screw rod by long nut
End, the bottom of long nut is contacted with girder to be tested, and the electromechanical dial gauge is fixed on what is set on electromechanical dial gauge mounting bracket
In mounting hole, the steel hoop is C-shaped, and two openend inwalls are fixed with nut, is provided with and matches somebody with somebody with nut through two openend outer walls
The screw rod of conjunction, the upper end of the upper screw rod passes through the side wall of steel hoop, and the both sides of steel hoop, which are respectively equipped with, to be screwed on screw thread
Nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510005413.3A CN104567641B (en) | 2015-01-06 | 2015-01-06 | A kind of Short/Medium Span Bridge deflection measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510005413.3A CN104567641B (en) | 2015-01-06 | 2015-01-06 | A kind of Short/Medium Span Bridge deflection measuring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104567641A CN104567641A (en) | 2015-04-29 |
| CN104567641B true CN104567641B (en) | 2017-08-08 |
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| CN201510005413.3A Expired - Fee Related CN104567641B (en) | 2015-01-06 | 2015-01-06 | A kind of Short/Medium Span Bridge deflection measuring apparatus |
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| CN109813194A (en) * | 2019-01-24 | 2019-05-28 | 苏州雅泛迪铝业有限公司 | Steel plate deflection detecting jig |
| CN110389008B (en) * | 2019-07-23 | 2020-08-25 | 常州机电职业技术学院 | Method for measuring deflection under main beam of bridge crane by using level gauge on ground |
| CN113148848B (en) * | 2021-01-27 | 2023-02-07 | 厦门雅众建设集团有限公司 | Inclination detection device for gantry crane for constructional engineering |
| 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 |
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| CN104567641A (en) | 2015-04-29 |
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