CN206281482U - A kind of device measured across waters deflection of bridge span - Google Patents
A kind of device measured across waters deflection of bridge span Download PDFInfo
- Publication number
- CN206281482U CN206281482U CN201621454670.1U CN201621454670U CN206281482U CN 206281482 U CN206281482 U CN 206281482U CN 201621454670 U CN201621454670 U CN 201621454670U CN 206281482 U CN206281482 U CN 206281482U
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- deflection
- bridge
- steel wire
- waters
- fixed
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Abstract
The utility model discloses a kind of device and measuring method measured across waters deflection of bridge span.The utility model mainly includes being respectively arranged at two fixed pulleys at bridge floor edge amount of deflection tested point and bridge floor deflection metrology point, a piece steel wire passes through described two fixed pulleys, the steel wire two ends connect two heavier and lighter pouring weights and are tensioned steel wire respectively, heavier pouring weight vertically sinks under water riverbed as fixed point, and lighter pouring weight vertically falls and is placed on a displacement measuring device.The utility model measures deflection of bridge span for the deflection metrology across waters bridge compared to precision level, and certainty of measurement is higher.The utility model mainly uses steel wire, fixed pulley and weight, and deflection of bridge span is measured with displacement measuring device, and required equipment is less, and expense is low, reproducible.
Description
Technical field
The utility model belongs to bridge structure inspection (prison) and surveys field, and in particular to a kind of dress of measurement across waters deflection of bridge span
Put.
Background technology
Bridge plays more and more important effect as the important component of Modern Traffic, is sent out for society and economy
Exhibition has a far reaching influence.But due to various errors of the bridge in design, construction and work progress, cause bridge to produce various asking
Topic, or even cause imponderable loss.Moment ensures bridge reliability of operation, is highly important problem, with important
The multi-meaning such as society, economy, science.
Deflection of bridge span (vertical displacement) is the direct reflection of bridge structure operation state, be bridge structure safety index it
One, it is to judge bridge vertical rigidity, structural bearing capacity and the mostly important technical parameter of structural integrity, it is bridge structure safe
The important indicator that performance evaluation, rebuilding of bridges and new bridge are checked and accepted.
Inspection (prison) survey method of current deflection of bridge span (vertical displacement) mainly has：1. the spirit level being made according to optical principle
Monitoring method, the method or device have that system is excessively complicated, expensive, safeguard that inconvenience, precision is not high, be not suitable for
In the long-term Continuous Observation of the engineering site of bad environments；2. the deflection monitoring device being made using liquid level law of connected vessels, as in
The patent of invention " the monitoring methods of long-span bridge deflection structure (CN 200310108447.2) " of Tongji University of state application, the liquid
There is liquid and flow stagnant stain in body linker method, the degree of accuracy is not high, repeatability is bad and can not carry out dynamic deflection, sedimentation detection
Shortcoming；The invention of the 3. angular displacement monitoring device of benchmark bracing wire one, such as Wuhan, China Yan Hai engineering technology Co., Ltd application is special
Sharp " a kind of method and device (CN 200610018825.1) to measuring deflection settling of engineering structure body ", there is base in the device
Quasi- bracing wire is easily disturbed by external forces, so as to the shortcoming for causing the degree of accuracy not high.
The content of the invention
The purpose of this utility model is the dress for providing the measurement high of a kind of simple structure, accuracy across waters deflection of bridge span
Put.
Above-mentioned purpose of the present utility model is realized by the following technical solutions：Across the waters deflection of bridge span of the measurement
Device, it includes being respectively arranged at two fixed pulleys at bridge floor edge amount of deflection tested point and bridge floor deflection metrology point, one
Steel wire connects two heavier and lighter pouring weights and is tensioned steel wire respectively by described two fixed pulleys, the steel wire two ends,
Heavier pouring weight vertically sinks under water riverbed as fixed point, and lighter pouring weight vertically falls and is placed on a displacement measuring device
On.
Specifically, described two fixed pulleys are separately fixed on support, and two fixed pulleys are in same level highly.
Specifically, institute's displacement measurement device includes displacement transducer, displacement transducer is located on bridge floor deflection metrology point,
Displacement transducer is in close contact lighter pouring weight by itself spring, displacement transducer also with signal storage device or computer
Signal acquiring system is connected.
Specifically, described two pouring weights are made of identical material, a volume is larger, a small volume.
Measuring method of the present utility model is as follows：
(1) install for fixing two supports of fixed pulley；The design of support meets two fixed pulleys and is scratched in bridge structure
Use demand in degree measurement, wherein, a fixed pulley is arranged at bridge floor edge amount of deflection tested point, fixed pulley support at this
Fixed, another fixed pulley is arranged at bridge floor deflection metrology point, and fixed pulley is fixed with support at this, and two fixed pulleys are arranged at
In same horizontal line；
(2) steel wire is guided by the described two fixed pulleys of step (1), by the steel wire one of bridge floor edge fixed pulley
The larger weight of end connection, holding vertically sinks under water；Smaller weight is connected by the steel wire other end at bridge floor deflection metrology point,
Smaller weight is pressed on displacement transducer, and displacement transducer is in close contact smaller weight by itself spring；
(3) step (2) institute displacement sensors are arranged on the surface at bridge floor deflection metrology point, using the deadweight of weight
Make steel wire generally in tensioning state, then steel wire, weight, displacement transducer and tested point are located on same vertical line；
(4) it is under tight state in steel wire, bridge floor is produced vertical displacement by load action, using displacement sensor
Go out amount of deflection change of the bridge floor edge amount of deflection tested point under load action.
The utility model measures deflection of bridge span, measurement essence for the deflection metrology across waters bridge compared to precision level
Du Genggao.The utility model mainly uses steel wire, fixed pulley and weight, and deflection of bridge span is measured with displacement measuring device, required to set
Standby less, expense is low, reproducible, and certainty of measurement can reach 0.01mm, and amount of deflection is less under, load action larger for rigidity
Bridge is particularly suitable.
Brief description of the drawings
Fig. 1 is the mounting structure schematic diagram of the utility model device.
Structural representation when Fig. 2 is the entirety downwarp of the utility model measurement device bridge floor.
Structural representation when Fig. 3 is the utility model measurement device bridge floor torsional deflection.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Referring to Fig. 1 to Fig. 3, the measurement apparatus of the present embodiment include being arranged at the fixed pulley 2 of bridge floor edge amount of deflection tested point
With the fixed pulley 3 being arranged at bridge floor deflection metrology point 9, steel wire 1 by fixed pulley 2 and fixed pulley 3, the connection of the left end of steel wire 1 compared with
The pouring weight 6 of weight, the right-hand member of steel wire 1 connects lighter pouring weight 7, and is tensioned steel wire 1, and pouring weight 6 and pouring weight 7 use identical material system
Into the volume of pouring weight 6 is larger, the small volume of pouring weight 7, and double object product difference is unsuitable excessive.Heavier pouring weight 6 vertically sinks to the water surface
As fixed point on riverbed 11 under 10, lighter pouring weight 7 vertically falls and is placed on displacement transducer 8, displacement transducer 8
On bridge floor deflection metrology point 9, displacement transducer 8 is in close contact lighter pouring weight 7, displacement transducer 8 by itself spring
It is connected that (displacement transducer and zoophysiology are existing mature technology, herein not with zoophysiology
Repeat again).It can be seen from figure 1 that fixed pulley 2 is fixed on support 4, fixed pulley 3 is fixed on support 5, and fixed pulley 2 is sliding with fixed
Wheel 3 is in same level highly.
The course of work of the present embodiment is：The bottom, the other end are fixed in the one end of steel wire 1 by pouring weight 6 and pouring weight 7 using deadweight
It is placed on displacement transducer 8, then steel wire 1 is tensioned, bridge receives load action, produces vertical displacement, bridge floor edge amount of deflection is to be measured
Point and bridge floor deflection metrology point produce vertical displacement poor, then displacement transducer 8 produces corresponding readings, and the reading is bridge floor edge
The amount of deflection (vertical displacement) at place.When under bridge generation entirety around with torsional deflection, bridge edge deflection metrology schematic diagram is as schemed
Shown in 2, Fig. 3.
Claims (4)
1. it is a kind of measure across waters deflection of bridge span device, it is characterised in that：It includes that being respectively arranged at bridge floor edge amount of deflection treats
Two fixed pulleys at measuring point and bridge floor deflection metrology point, a steel wire is by described two fixed pulleys, the steel wire two ends point
Two heavier and lighter pouring weights are not connected and steel wire is tensioned, and heavier pouring weight vertically sinks under water riverbed as fixed point, compared with
Light pouring weight vertically falls and is placed on a displacement measuring device.
2. the device across waters deflection of bridge span is measured according to claim 1, it is characterised in that：Described two fixed pulley difference
It is fixed on support, and two fixed pulleys are in same level highly.
3. it is according to claim 1 or claim 2 measurement across waters deflection of bridge span device, it is characterised in that：Institute's displacement measurement dress
Put including displacement transducer, displacement transducer is located on bridge floor deflection metrology point, and displacement transducer is closely connect by itself spring
Lighter pouring weight is touched, displacement transducer is also connected with signal storage device or zoophysiology.
4. the device across waters deflection of bridge span is measured according to claim 3, it is characterised in that：Described two pouring weights use phase
It is made with material, a volume is larger, a small volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621454670.1U CN206281482U (en) | 2016-12-28 | 2016-12-28 | A kind of device measured across waters deflection of bridge span |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621454670.1U CN206281482U (en) | 2016-12-28 | 2016-12-28 | A kind of device measured across waters deflection of bridge span |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206281482U true CN206281482U (en) | 2017-06-27 |
Family
ID=59072102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621454670.1U Expired - Fee Related CN206281482U (en) | 2016-12-28 | 2016-12-28 | A kind of device measured across waters deflection of bridge span |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206281482U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643634A (en) * | 2016-12-28 | 2017-05-10 | 湖南科技大学 | Device for measuring water area-crossing bridge deflection and measurement method thereof |
| 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 |
-
2016
- 2016-12-28 CN CN201621454670.1U patent/CN206281482U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643634A (en) * | 2016-12-28 | 2017-05-10 | 湖南科技大学 | Device for measuring water area-crossing bridge deflection and measurement method thereof |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170627 Termination date: 20191228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |