KR20170061207A - a dynamic load test apparatus of bridge long span - Google Patents
a dynamic load test apparatus of bridge long span Download PDFInfo
- Publication number
- KR20170061207A KR20170061207A KR1020150165235A KR20150165235A KR20170061207A KR 20170061207 A KR20170061207 A KR 20170061207A KR 1020150165235 A KR1020150165235 A KR 1020150165235A KR 20150165235 A KR20150165235 A KR 20150165235A KR 20170061207 A KR20170061207 A KR 20170061207A
- Authority
- KR
- South Korea
- Prior art keywords
- bridge
- support frame
- dynamic load
- vehicle
- load test
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/34—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by mechanical means, e.g. hammer blows
Abstract
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic load test apparatus for a long span bridge, and more particularly to a dynamic load test apparatus for a long span bridge, in which a dummy vehicle forming an actual weight of a vehicle and a mount capable of mounting a bridge are provided, The present invention relates to a dynamic load test apparatus for long-span bridges, which can more accurately evaluate the structural stability by measuring the influence of the dynamic load on the bridge structure for each section. The present invention relates to an apparatus for testing a dynamic load of a long span bridge, comprising: a mounting means for mounting a bridge, the mounting means including a column frame and a support frame; A dummy vehicle which is designed to have the same weight and center of gravity as the actual vehicle to be passed through the bridge, and which has the same suspension device as the actual vehicle on the lower side and before and after the guide; A bracket attached to both ends of the support frame, and a hydraulic drive winch provided to each of the brackets; .
Description
BACKGROUND OF THE
Generally, long spans lead to a long gap between steel towers and bridges. Bridges: Facilities that allow water to cross or cross over from one high to the other. A load testing device is used.
However, since the conventional load testing device is configured to apply a static load to a local part, which is a part of the entire long span bridge structure, it is impossible to measure the influence that occurs in the bridge structure during the dynamic behavior of the vehicle, The stability can not be evaluated.
In order to evaluate the effect of the dynamic behavior of the vehicle on the bridge structure, a dynamic coefficient is applied to the result of the static load test device to predict the approximate result. The design and installation (construction) of the bridge structure is not easy because it does not properly reflect the dynamic behavior of the vehicle and the characteristics of the suspension, (Construction) of the bridge due to insufficient design.
Also, in order to obtain a more accurate predicted value, a method of passing an actual vehicle through a separate test site is performed. However, this method has a problem of causing personal injury of a rider aboard a vehicle when cutting a bridge due to insufficient design.
SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a long-span bridge in which a dumper vehicle having the same weight as an actual vehicle is repeatedly moved The bridge structure is designed to prevent damage caused by damage to the bridge structure caused by the dynamic load test using the actual vehicle and to improve the accuracy of the dynamic load test. And to provide a dynamic load test apparatus for a long-span bridge capable of quickly and easily constructing the bridge.
According to an aspect of the present invention, there is provided a dynamic load test apparatus for a long span bridge, comprising: a mounting means for mounting a bridge, the mounting means including a column frame and a support frame; A dummy vehicle which is designed to have the same weight and center of gravity as the actual vehicle to be passed through the bridge, and which has the same suspension device as the actual vehicle on the lower side and before and after the guide; A bracket attached to both ends of the support frame, and a hydraulic drive winch provided to each of the brackets; And a control unit.
The support frame is provided with a support frame coupling bracket coupled to the column frame, and a support link bracket is formed on both sides of the support frame.
And the guide frame is coupled to the support frame through a support link bracket formed on both sides of the support frame.
And the hydraulic winch is driven by a hydraulic motor.
And a gantry crane is installed on both sides of the upper portion of the bridge for lifting the bridge and seating the bridge on the mounting means or for lifting the dummy vehicle to seat the bridge on the bridge.
And a rotation driving part is formed on both sides of the support frame.
And the rotary drive unit may include a hydraulic cylinder having a piston rod hinged to a link ring coupled to the guide panel at one end.
As described above, according to the present invention, it is possible to more accurately grasp the influence and results of a bridge structure in a dynamic behavior through a bridge cradle supporting a long span bridge and an unmanned dummy vehicle having the same weight as a real vehicle, The safety of the personnel can be improved, and the dynamic load test time and labor cost can be saved.
Further, the present invention has the effect of rapidly and easily constructing a long-span bridge satisfying the design conditions by increasing the accuracy of the dynamic load test by repeatedly moving the dummy vehicle having the same weight as the actual vehicle.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a principal part decomposition state of an apparatus for dynamic load testing of a long-span bridge according to a preferred embodiment of the present invention. FIG.
Fig. 2 is a view showing the coupling state of Fig. 1. Fig.
3 is a view schematically showing a frontal state in which a gantry crane is installed on an upper portion of a long-span bridge installed through a mounting means and a vehicle driving means according to the present invention.
FIG. 4 is a view schematically showing a state in which a dummy vehicle is seated on an upper portion of a long-span bridge using the gantry crane of FIG. 3. FIG.
5 is a view schematically showing a use state of the dynamic load testing apparatus of a long span bridge according to a preferred embodiment of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a dynamic load test apparatus for a long span bridge according to the present invention will be described in more detail with reference to the accompanying drawings.
Hereinafter, elements having the same function in all the following drawings will be denoted by the same reference numerals, and repetitive description will be omitted. Further, the following terms are defined in consideration of functions in the present invention, Should be interpreted as.
1 to 5, the dynamic
The mounting means 110 is for mounting a
Here, the
A column
Between the pair of
The
The
The
In addition, the
When the
Accordingly, when the
It is preferable that the
The
The vehicle driving means 130 includes a
The
Here, the
The
Further, it is preferable that a clutch or a brake is mounted on the
The vehicle drive means 130 having such a configuration releases the tension of the
The
The operation state of the present invention having the above-described structure will now be described.
First, when a dynamic load test of a long span bridge is performed using the dynamic load testing apparatus according to the present invention, two
Next, the
Thereafter, the
Subsequently, the tension of the
Next, the
After completion of the dynamic load test of the long span bridge, the dismantling of the dynamic load test apparatus according to the present invention is preferably carried out in the reverse order of the installation method.
Accordingly, the dynamic load testing apparatus according to the present invention can secure the performance of the dynamic load test by using the same dummy vehicle as the unmanned actual vehicle, and obtain more accurate results in comparison with the conventional load testing apparatus. And automatic repetition is possible, so that load test time and labor cost can be saved.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. And will be apparent to those skilled in the art to which the invention pertains.
100: Dynamic load test apparatus 110: Mounting means
111:
111b: support frame 112: support frame
112a: a base
113:
113b:
120: Dummy vehicle 121: Suspension device
122: Guide 130: Vehicle passive means
131: Bracket 132: Hydraulic winch
132a:
132c: Hook 140: Guide panel
141: Guide link bracket 142: Fixed link
150: Gantry crane 200: Bridge panel
Claims (7)
A mounting means for mounting the bridge, the mounting means comprising a column frame and a support frame;
A dummy vehicle which is designed to have the same weight and center of gravity as the actual vehicle to be passed through the bridge, and which has the same suspension device as the actual vehicle on the lower side and before and after the guide;
A bracket attached to both ends of the support frame, and a hydraulic drive winch provided to each of the brackets; Wherein the first and second bridge units are connected to each other by a cable.
Wherein the support frame comprises a support frame coupling bracket coupled to the column frame and the support link brackets are formed on both sides of the support frame.
Wherein the guide frame is coupled to the support frame through a support link bracket formed on both sides of the support frame.
Wherein the hydraulic winch is driven by a hydraulic motor.
Characterized in that a gantry crane is installed on both sides of the bridge for lifting the bridge to seat it on the mounting means or for lifting the dummy vehicle to seat it on the bridge.
And a rotation driving part is formed on both sides of the support frame.
Wherein the rotary drive unit comprises a hydraulic cylinder having a piston rod hinged to a link ring coupled to a guide panel at one end thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150165235A KR101804021B1 (en) | 2015-11-25 | 2015-11-25 | a dynamic load test apparatus of bridge long span |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150165235A KR101804021B1 (en) | 2015-11-25 | 2015-11-25 | a dynamic load test apparatus of bridge long span |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20170061207A true KR20170061207A (en) | 2017-06-05 |
KR101804021B1 KR101804021B1 (en) | 2017-12-04 |
Family
ID=59223036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150165235A KR101804021B1 (en) | 2015-11-25 | 2015-11-25 | a dynamic load test apparatus of bridge long span |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101804021B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108760536A (en) * | 2018-04-10 | 2018-11-06 | 东南大学 | The device and method for studying bridge pier performance under xial feed and detonation |
CN110108427A (en) * | 2019-05-06 | 2019-08-09 | 黄河科技学院 | A kind of bridge loading analog test device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101233058B1 (en) | 2011-11-17 | 2013-02-13 | 주식회사 로드코리아 | Apparatus for accelerated pavement test |
-
2015
- 2015-11-25 KR KR1020150165235A patent/KR101804021B1/en active IP Right Grant
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108760536A (en) * | 2018-04-10 | 2018-11-06 | 东南大学 | The device and method for studying bridge pier performance under xial feed and detonation |
CN108760536B (en) * | 2018-04-10 | 2020-12-11 | 东南大学 | Device and method for researching performance of pier under axial load and explosion action |
CN110108427A (en) * | 2019-05-06 | 2019-08-09 | 黄河科技学院 | A kind of bridge loading analog test device |
Also Published As
Publication number | Publication date |
---|---|
KR101804021B1 (en) | 2017-12-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101013462B1 (en) | Large-capacity tensile test apparatus for a large-capacity wire rope | |
CN110686978B (en) | Bridge inhaul cable stretching resonance detection device | |
CN106698148B (en) | A kind of boom hoist cable rope thread tension measurement device | |
KR101804021B1 (en) | a dynamic load test apparatus of bridge long span | |
JP2015010864A (en) | Dynamic load testing device | |
CN105692470A (en) | Internal climbing tower crane and operating method thereof | |
CN107635906A (en) | With the door frame power effectively overlapped in superstructure and the crane of arm support power | |
CN103863955A (en) | Self-introduction system and tower crane with self-introduction system | |
CN106441961A (en) | Anchor capstan load testing system | |
KR101540353B1 (en) | Lift for Tensioning Jack | |
US3320714A (en) | Method of and apparatus for pole reinforcing | |
KR101422259B1 (en) | Engine test equipment | |
KR101939162B1 (en) | Cable inspection trolley having balance frame and folding-type driving wheel | |
CN102564792A (en) | Loading device for entirely applying simulative load to ocean work-over rig | |
KR100833751B1 (en) | Moving and supporting apparatus of vehicle for working of bridge slab | |
CN116296906A (en) | Drop hammer impact test device for bridge FRP inhaul cable | |
CN103848362A (en) | Variable amplitude pulley block structure for crane and crane with same | |
CN102745564B (en) | Lift strength tester | |
CN202471433U (en) | Loading device used for entirely applying simulated load to ocean workover rig | |
JP2015102523A (en) | Vehicle fixing system | |
CN109534187B (en) | Hoisting method suitable for hinged propeller strut on full-rotation floating crane ship | |
KR101525557B1 (en) | Beam launcher with three auto anchorages and oil cylinder | |
KR20130046666A (en) | Cmc fracture test system | |
KR101104268B1 (en) | Method and apparatus for testing of lug load using hydraulic and pneumatic | |
RU96246U1 (en) | TOWER INSTALLATION TEST |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant |