CN103090773A - Bridge loading test deflection testing instrument - Google Patents

Bridge loading test deflection testing instrument Download PDF

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Publication number
CN103090773A
CN103090773A CN2013100368288A CN201310036828A CN103090773A CN 103090773 A CN103090773 A CN 103090773A CN 2013100368288 A CN2013100368288 A CN 2013100368288A CN 201310036828 A CN201310036828 A CN 201310036828A CN 103090773 A CN103090773 A CN 103090773A
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CN
China
Prior art keywords
test
deflection
instrument
platform
rope
Prior art date
Application number
CN2013100368288A
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Chinese (zh)
Inventor
许宏元
慕玉坤
白鹏翔
尹恒
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西安瑞通路桥科技有限责任公司
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Application filed by 西安瑞通路桥科技有限责任公司 filed Critical 西安瑞通路桥科技有限责任公司
Priority to CN2013100368288A priority Critical patent/CN103090773A/en
Publication of CN103090773A publication Critical patent/CN103090773A/en

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Abstract

The invention relates to the technical field of bridge deflection tests, in particular to a bridge loading test deflection testing instrument. The technical scheme is that the bridge loading test deflection testing instrument comprises an instrument tank box and a leveling instrument which is arranged on the top face of the instrument tank body and used for measuring the levelness of the top face of the instrument tank body, and side face opening holes are formed in the side faces of the tank body. Three springs are fixedly hung on the upper portion of the tank body, a testing platform is connected at the lower ends of the springs, a testing instrument support is fixedly arranged above the testing platform, and the deflection testing instrument is fixedly arranged on the testing instrument support. A turn buckle which is used for adjusting the lengths of the springs before a deflection test is hung below the testing platform. The upper end of a deflection testing rope is fixedly arranged at the lower end of the turn buckle, and the lower end of the deflection testing rope is connected with a counterweight block placed on the ground. A large hang ring is arranged on the top face of the outer portion of the tank body. The bridge loading test deflection testing instrument is reasonable in structural design, convenient to manufacture, mount and arrange, high in deflection test precision, capable of effectively solving the problems that labor and materials are consumed, working at heights is needed, mounting and dismounting are troublesome, the test precision is hard to guarantee and the like of an existing deflection test system in load tests.

Description

Test on Bridge Loading deflection test instrument

Technical field

The present invention relates to the deflection of bridge span technical field of measurement and test, especially relate to a kind of Test on Bridge Loading deflection test instrument.

Background technology

The deflection of bridge structure test is to one of important parameter of bridge superstructure detection and condition state.At present, generally by Test on Bridge Loading, be captured under specific load action, the deflection of bridge span situation of change reflects the integral rigidity situation of bridge structure with this, thereby judges the health status of in-service bridge.

At present, in Test on Bridge Loading, deflection test method commonly used is the dial gauge method of testing.Namely set up support below bridge span structure, contact at the bottom of fixing dial gauge on support, dial gauge contact pilotage and beam.Realize the deflection test of beam body under each operating mode by said method.When adopting dial gauge directly to test beam body amount of deflection, set up support and need to expend a large amount of human and material resources, especially when under-clearance is higher, set up on the one hand difficulty, the tester needs in work high above the ground on the other hand, completes the work such as installation, debugging, and risk is larger.In addition, its stability of higher support is difficult for guaranteeing, brings larger error for the deflection test result, and measuring accuracy is difficult for guaranteeing.And setting up to current making troubles under bridge of support need be taked the measures such as short-term close traffic.

In Test on Bridge Loading, the spirit-leveling instrument method of testing is also the deflection test method of commonly using.Namely in the loading test process, by setting up spirit-leveling instrument at bridge floor, test the amount of deflection of specifying measuring point under each operating mode and change.During the method test, need pointwise test, need a plurality of tester's operations to complete; And test process is slower, affects test efficiency.In addition, limited by spirit level, the method is only applicable to the test of Large Span Bridges structural deflection.

Summary of the invention

Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of Test on Bridge Loading deflection test instrument is provided, that its reasonable in design, processing and fabricating and installing laid is convenient, simple to operate, applied widely, the deflection test precision is high, can effectively solve consumption power consumptive material that in loading test, existing deflection testing system exists, need that work high above the ground, assembling and disassembling are taken a lot of trouble, measuring accuracy is difficult to the problems such as assurance.

For solving the problems of the technologies described above, the technical solution used in the present invention is: Test on Bridge Loading deflection test instrument, it is characterized in that, the level that comprises instrument box and be arranged on its end face and the levelness of its end face is measured, this casing side have a lateral opening hole; Described casing top is fixing hangs three springs, and test platform is connected in described spring lower end, and the test instrumentation support is fixed in described test platform top, and the deflection test instrument is fixed on the test instrumentation support; Described test platform below hangs with the front steam boat ratchet of regulating described spring elongation of deflection test; Described steam boat ratchet lower end is fixed in deflection test rope upper end, and its lower end is connected with the balancing weight that is positioned over ground, makes described deflection test rope be in all the time vertical state under gravity traction; Described casing exterior top surface is provided with large suspension ring, is fixed in beam body or tested deflection test point place for it.

In the present invention, described test platform, spring, test instrumentation support, test instrumentation, steam boat ratchet, part deflection test rope all are placed in described box house; Described tank floor perforate for the deflection test rope by and be free to slide, described bottom surface position of opening is corresponding with the deflection test rope.

In the present invention, the two ends of described spring are connected lock ring with top three of fixing of described box house end face and described test platform respectively.

In the present invention, described test platform is the equilateral triangle platform, and is arranged symmetrically with above it three lock rings that connect described spring.

In the present invention, be provided with the grommet that hangs for described steam boat ratchet below described test platform.

In the present invention, described steam boat ratchet upper end hangs on the grommet of described test platform below, and the lower end connects described deflection test rope; Described deflection test rope is wire rope, and its upper end colligation is fixed in described steam boat ratchet lower draw-bar, passes described bottom half perforate, and the lower end is fixed on described balancing weight grommet; Described balancing weight top is provided with for the fixing grommet of described deflection test rope colligation, and described balancing weight bottom surface contacts with ground.

In the present invention, described test instrumentation bracket base is adsorbed on described test platform by inner magnet, and described test instrumentation is fixed in test instrumentation support upper end.To be fixed in described test platform upper outside except base for described test instrumentation support, but remainder all free adjustment length, direction.

In the present invention, described test instrumentation is dial gauge, and described dial gauge expansion link contacts with described casing top; The data conductor of described dial gauge passes from the lateral opening hole of described casing, is connected with data collecting instrument, realizes the deflection data collection.

In the present invention, the quantity of described level is one, and level is universal level.

In the present invention, described tank material is steel.

The present invention compared with prior art has the following advantages:

1, reasonable in design, processing and fabricating and installation are laid conveniently, and volume is little, lightweight, be convenient to carrying, and input cost is low.

2, at the bottom of casing can be positioned beam or on anticollision barrier, the location is convenient, does not need the people to operate under bridge, has saved support and has set up required manpower and material input, and not limited by landform under bridge, current.

3, the balancing weight mode that contacts with ground by tensioned and steel wire hang, realized the fixed point migration, being about to fixed point migrates on test platform from ground, thereby the inconvenience operations such as bearing and work high above the ground have been avoided setting up under bridge, reduce experimentation cost and risk, improved test efficiency.

4, the fixed point moving apparatus result of use that is comprised of the steel wire hang balancing weight is better, and intensity of steel wire is high, and front face area is little, in conjunction with balancing weight weight, and whole suspension system good stability, the deflection data collection signal is stable and reliable.

5, the steel construction casing that adopts, at the bottom of it is fixed in beam or outside guardrail, stability better can effectively prevent wind load to the perturbation action of casing, guarantees the data acquisition element normal operation.Simultaneously, casing one side arranges opening, is convenient to by artificial reading; Perhaps when data line broke down, the tester was convenient to obtain test data by the mode of artificial reading.

6, box top carries level, makes its Level-adjusting convenient, thereby can guarantee the accuracy of deflection test result.

In sum, the invention reasonable in design, install to lay and easy and simple to handle, deflection test is accurate, input cost is low, can effectively solve the effort that traditional deflection testing system exists consuming time, need carry out work high above the ground, system stability is poor, assembling and disassembling is time-consuming, the deflection test data precision is difficult to the problems such as assurance.

Description of drawings

Below in conjunction with the drawings and the specific embodiments, the invention will be further described.

Fig. 1 is the structural representation that Test on Bridge Loading deflection test of the present invention is used instrument;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

The C-C sectional view of Fig. 4 Fig. 1;

Fig. 5 is that the D of Fig. 1 is to enlarged drawing;

Fig. 6 is the structural representation that Test on Bridge Loading deflection test of the present invention is connected with data collecting instrument with instrument.

The 1-counterweight; The 2-wire rope; The 3-casing; The perforate of 4-bottom surface;

The 5-steam boat ratchet; The 6-test platform; The 7-grommet; The 8-spring;

The 9-dial gauge; The 10-level; The 11-suspension ring; 12-test instrumentation support;

13-balancing weight suspension ring; The 4-data conductor; The 15-lateral opening hole; The 16-data collecting instrument;

The 31-tank floor; The 32-box top; 33-casing side; 34-casing button fly front;

Embodiment

as shown in Figures 1 to 4, invention comprises instrument box 3, be arranged on casing 3 end faces and to the horizontal degree measurement of box top level 10, fixedly hang on three springs 8 of end face on described casing 3, be connected in the test platform 6 of described spring 8 lower ends, be fixed in the test instrumentation support 12 of described test platform 6 tops, be fixed in the deflection test instrument on test instrumentation support 12, regulate the steam boat ratchet 5 of described spring 8 elongations before deflection test, all the time be in the deflection test rope 2 of vertical state in the deflection test process under the spring traction, be positioned over the balancing weight 1 on ground, this casing 3 has lateral opening hole 15.

Test platform 6, spring 8, test instrumentation support 12, test instrumentation, steam boat ratchet 5, part deflection test rope 2 all are placed in casing 3 inside.

Casing 3 bottom surface perforates 4 for deflection test ropes 2 by and be free to slide, perforate 4 positions are corresponding with deflection test rope 2, tank material is steel.

Casing 3 inside top surface are fixed three lock rings 7 that connect described spring; Lock ring 7 positions are corresponding with lock ring 7 on test platform 6.

Casing 3 exterior top surface are provided with suspension ring 11 and are fixed in beam body or tested deflection test point place for it.

Test platform 6 is the equilateral triangle platform, and is arranged symmetrically with above it three lock rings 7 that connect described spring.

Test platform 6 belows are provided with the grommet 7 that hangs for steam boat ratchet.

Steam boat ratchet 5 upper ends hang on the grommet 7 of test platform below, and the lower end connects deflection test rope 2.

Deflection test rope 2 is wire rope, and its upper end colligation is fixed in described steam boat ratchet 5 lower hanging holes, passes casing 3 bottom opening 4, and the lower end is fixed on the grommet 13 of balancing weight 1.

Balancing weight 1 top is provided with for the fixing grommet 13 of deflection test rope 2 colligations, and the bottom surface of balancing weight 1 contacts with ground.

Test instrumentation support 12 bases are adsorbed on described test platform 6 by inner magnet, and test instrumentation is fixed in the support upper end.Test instrumentation support 12 is upper outside except base is fixed in test platform 6, but remainder all free adjustment length, direction.

Test instrumentation is dial gauge 9 in the present invention, and dial gauge 9 expansion links contact with casing 3 tops.33 perforate 15 passes the data conductor 14 of dial gauge from described casing side, is connected with data collecting instrument.

The quantity of level 10 is one, and level is universal level.

During actual the use, Test on Bridge Loading deflection test of the present invention mainly comprises the steps: with the course of work of instrument

Step 1: at the bottom of determining beam or guardrail deflection test point position, the suspension ring 11 of test casing 3 are fixed in deflection test point position, by regulating level 10, assurance box top level.3 springs 8 are installed in casing 3 successively, and spring 8 upper ends are connected with box top grommet 7, and the lower end is connected with the grommet 7 of test platform 6 tops.

Step 2: hang the wire rope 2 of suitable length according to the height on test point positional distance ground, and at wire rope 2 lower ends suspention balancing weights 1.

Step 3: wire rope 2 is passed bottom half perforate 4, and upper end and steam boat ratchet 5 one end colligations, steam boat ratchet 5 other ends are connected with the grommet 7 of test platform 6 belows.

Step 4: by regulating the elasticity of steam boat ratchet 5, make wire rope 2 tensionings and built on stilts not, make simultaneously spring 8 that certain elongation is arranged.

Step 5: set up test instrumentation support 12 on test platform 6, dial gauge 9 is installed, make the feeler lever of dial gauge 9 tactile mutually with the upper end face of casing 3, and data conductor 14 is passed from casing lateral opening hole 15, be connected with data collecting instrument 16; Adjust test instrumentation support 12 after installation, make the dial gauge stroke satisfy the deflection test needs.

Step 6: instrument testing and inspection.Guarantee that whether balancing weight 1 contacts etc. fully with ground; Data collecting instrument 16 starts check whether data acquisition is normal.

During actual test, when the beam body of tested bridge produces amount of deflection, to drive casing 3 and produce corresponding amount of deflection, spring 8 upper ends also produce corresponding amount of deflection thereupon, because spring 8, wire rope 2 are in tensioning state, fixed point is migrated on test platform 6 by ground, therefore, the spring lower end will can not produce displacement, the expansion link of end face compression dial gauge 9 on casing 3, make dial gauge 9 produce readings, the reading of dial gauge 9 is transferred to data collecting instrument 16 by data conductor 14 or take the mode of artificial reading to realize the test of bridge beam body amount of deflection.

The above is only the preferred embodiment of invention, is not that invention is imposed any restrictions, and everyly according to the invention technical spirit, any simple modification made for any of the above embodiments, change and equivalent structure is changed, and all still belongs in the protection domain of invention technical scheme.

Claims (10)

1. Test on Bridge Loading deflection test instrument, it is characterized in that: the level (10) that comprises instrument box (3) and be arranged on its end face and the levelness of its end face is measured, this casing (3) side have a lateral opening hole (15); Fixing three springs (8) that hang in described casing top, test platform (6) is connected in described spring lower end, test instrumentation support (12) is fixed in above described test platform (6), and the deflection test instrument is fixed on instrument support (12); Described test platform (6) below hangs with the front steam boat ratchet (5) of regulating described spring (8) elongation of deflection test; Described steam boat ratchet (5) lower end is fixed in deflection test rope (2) upper end, and its lower end is connected with the balancing weight that is positioned over ground (1), makes described deflection test rope (2) be in all the time vertical state under gravity traction; Described casing (3) exterior top surface is provided with large suspension ring (11), is fixed in beam body or tested deflection test point place for it.
2. according to Test on Bridge Loading deflection test instrument claimed in claim 1, it is characterized in that: described test platform (6), spring (8), test instrumentation support (12), test instrumentation, steam boat ratchet (5), part deflection test rope (2) all are placed in described casing (3) inside; Described casing (3) bottom surface perforate (4) for the deflection test rope (2) by and be free to slide, described bottom surface perforate (4) position is corresponding with deflection test rope (2).
3. according to the described Test on Bridge Loading deflection test of claim 1 or 2 instrument, it is characterized in that: the two ends of described spring (8) are connected respectively lock ring (7) and connect with top three of fixing of described casing (3) inside top surface and described test platform (6).
4. according to Test on Bridge Loading deflection test instrument claimed in claim 3, it is characterized in that: described test platform (6) is the equilateral triangle platform, and is arranged symmetrically with above it three lock rings (7) that connect described spring.
5. according to Test on Bridge Loading deflection test instrument claimed in claim 4, it is characterized in that: be provided with the grommet (7) that hangs for described steam boat ratchet (5) below described test platform (6).
6. according to Test on Bridge Loading deflection test instrument claimed in claim 5, it is characterized in that: described steam boat ratchet (5) upper end hangs on the grommet (7) of described test platform (6) below, and the lower end connects described deflection test rope (2); Described deflection test rope (2) is wire rope, and its upper end colligation is fixed in described steam boat ratchet (5) lower draw-bar, passes described bottom half perforate (4), and the lower end is fixed on described balancing weight grommet (13); Described balancing weight (1) top is provided with for the fixing grommet (13) of described deflection test rope (2) colligation, and described balancing weight (1) bottom surface contacts with ground.
7. according to Test on Bridge Loading deflection test instrument claimed in claim 6, it is characterized in that: described test instrumentation support (12) base is adsorbed on described test platform (6) by inner magnet, and described test instrumentation is fixed in the support upper end; To be fixed in described test platform (6) upper outside except base for described test instrumentation support (12), but remainder all free adjustment length, direction.
8. according to Test on Bridge Loading deflection test instrument claimed in claim 7, it is characterized in that: described test instrumentation is dial gauge (9), and described dial gauge expansion link contacts with described case (3) body top; The data conductor (14) of described dial gauge (9) passes from the lateral opening hole (15) of described casing (3), is connected with data collecting instrument (16), realizes the deflection data collection.
9. according to Test on Bridge Loading deflection test instrument claimed in claim 8, it is characterized in that: the quantity of described level (10) is one, and level is universal level.
10. according to Test on Bridge Loading deflection test instrument claimed in claim 9, it is characterized in that: described casing (3) material is steel.
CN2013100368288A 2013-01-31 2013-01-31 Bridge loading test deflection testing instrument CN103090773A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103454054A (en) * 2013-08-07 2013-12-18 中国科学院力学研究所 Force control loading and layout variable vertical vibration experimental device
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
CN105334014A (en) * 2015-11-10 2016-02-17 长安大学 Adjustable suspended cable method for testing bridge deflection
CN105423880A (en) * 2015-11-10 2016-03-23 长安大学 Method for suspending main cable to measure bridge deflection
CN106908207A (en) * 2017-03-21 2017-06-30 西南交通大学 A kind of bridge static loading test deflection measuring apparatus and method
KR101794127B1 (en) 2017-01-17 2017-11-06 (주)한국종합시설안전 displacement behavior apparatus for bridge upper structure
CN109781367A (en) * 2019-01-25 2019-05-21 刘金生 A kind of detection device with elasticity regulatory function for drag-line bridge
CN110333037A (en) * 2019-04-23 2019-10-15 武汉理工大学 Express-way guard-rail plates detection system and method based on obliquity sensor
KR102187875B1 (en) * 2019-08-14 2020-12-07 주식회사 홍익기술단 Deflection Measuring Instruments

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CN201707264U (en) * 2010-06-23 2011-01-12 上海市安装工程有限公司 Load test device
CN201993210U (en) * 2011-03-21 2011-09-28 中交通力建设股份有限公司 Downwards pulled meter bracket for testing bridge flexibility
CN202002786U (en) * 2011-03-21 2011-10-05 长安大学 Instrument for testing deflection of bridge
EP2444787A1 (en) * 2010-10-22 2012-04-25 Vilnius Gediminas Technical University Method and device for bridge state evaluation using dynamic method
CN202274855U (en) * 2011-10-29 2012-06-13 中铁一局集团有限公司 Deflection testing system for bridge load test

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201707264U (en) * 2010-06-23 2011-01-12 上海市安装工程有限公司 Load test device
EP2444787A1 (en) * 2010-10-22 2012-04-25 Vilnius Gediminas Technical University Method and device for bridge state evaluation using dynamic method
CN201993210U (en) * 2011-03-21 2011-09-28 中交通力建设股份有限公司 Downwards pulled meter bracket for testing bridge flexibility
CN202002786U (en) * 2011-03-21 2011-10-05 长安大学 Instrument for testing deflection of bridge
CN202274855U (en) * 2011-10-29 2012-06-13 中铁一局集团有限公司 Deflection testing system for bridge load test

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103454054A (en) * 2013-08-07 2013-12-18 中国科学院力学研究所 Force control loading and layout variable vertical vibration experimental device
CN103454054B (en) * 2013-08-07 2016-01-13 中国科学院力学研究所 The vertical vibration experimental device of a kind of power controlled loading, variable layout
CN103791795B (en) * 2014-02-24 2017-06-16 甘肃省交通科学研究院有限公司 Bridge static loading experiment displacement monitor
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
CN105334014B (en) * 2015-11-10 2017-11-24 长安大学 A kind of adjustable suspension cable method for testing deflection of bridge span
CN105334014A (en) * 2015-11-10 2016-02-17 长安大学 Adjustable suspended cable method for testing bridge deflection
CN105423880A (en) * 2015-11-10 2016-03-23 长安大学 Method for suspending main cable to measure bridge deflection
CN105423880B (en) * 2015-11-10 2017-11-24 长安大学 A kind of method for hanging main push-towing rope measurement deflection of bridge span
KR101794127B1 (en) 2017-01-17 2017-11-06 (주)한국종합시설안전 displacement behavior apparatus for bridge upper structure
CN106908207A (en) * 2017-03-21 2017-06-30 西南交通大学 A kind of bridge static loading test deflection measuring apparatus and method
CN106908207B (en) * 2017-03-21 2019-02-01 西南交通大学 A kind of bridge static loading test deflection measuring apparatus and method
CN109781367A (en) * 2019-01-25 2019-05-21 刘金生 A kind of detection device with elasticity regulatory function for drag-line bridge
CN110333037A (en) * 2019-04-23 2019-10-15 武汉理工大学 Express-way guard-rail plates detection system and method based on obliquity sensor
KR102187875B1 (en) * 2019-08-14 2020-12-07 주식회사 홍익기술단 Deflection Measuring Instruments

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Application publication date: 20130508