CN210051672U - Bridge floor water permeability resistance testing device - Google Patents
Bridge floor water permeability resistance testing device Download PDFInfo
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- CN210051672U CN210051672U CN201920548371.1U CN201920548371U CN210051672U CN 210051672 U CN210051672 U CN 210051672U CN 201920548371 U CN201920548371 U CN 201920548371U CN 210051672 U CN210051672 U CN 210051672U
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Abstract
The utility model discloses a bridge floor water resistance permeability's testing arrangement when using, selects the test point, bores the observation hole at the steel sheet of test point below. And laying epoxy resin glue in a range matched with the sealing plate at the test point on the bridge floor to form a certain thickness, and automatically leveling and curing the surface of the epoxy resin glue. And arranging the sealing plate on the cured epoxy resin glue, abutting against the upper part of the jack, and rotating the jack to enable the water cylinder to be tightly attached to the bridge deck. And opening the hydraulic pump to enable the water tank to be filled with water and pressurized, and observing the pressure gauge to keep the pressure in the water tank within a set value for a set duration. And after the pressurization is finished, checking the water seepage condition in the observation hole, wherein if the concrete in the observation hole is dried, the water seepage resistance of the bridge deck is intact, and if the concrete in the observation hole is wet, the water seepage resistance of the bridge deck is damaged. The utility model discloses solved effectively when bridge floor water resistance permeability tests, need take the test block that awaits measuring to the laboratory in carry out the problem of testing.
Description
Technical Field
The utility model relates to a bridge engineering test technique, concretely relates to bridge floor water permeability resistance's testing arrangement.
Background
The steel-UHPC (Ultra-High Performance Concrete) combined bridge deck is a novel orthotropic steel bridge deck structure which is formed in recent years, the ultrahigh Performance Concrete is introduced on a top plate of the orthotropic steel bridge deck as a structural layer, the structural layer and the orthotropic steel bridge deck form combined bridge deck cooperative stress through shear keys, the local rigidity of the bridge deck is obviously increased, the stress amplitude of fatigue vulnerable parts is greatly reduced, and the stress condition of bridge deck pavement is improved, so that a comprehensive solution idea is provided for fatigue cracking of the orthotropic steel bridge deck and easy damage of the bridge deck.
The ultra-high performance concrete pavement layer is used as a structural layer, improves the stress condition of a steel bridge deck and a pavement surface layer, and is also used as a bridge deck waterproof material to prevent external moisture from leaking into the steel bridge deck. Under the condition of a laboratory, the anti-permeability performance of the ultra-high performance concrete measured according to the test method standard for the long-term performance and the durability of the common concrete (GB/T50082) 2009 can meet the requirement that the surface of a test piece is not subjected to water seepage for 8 hours under the water pressure of 4.0MPa and is far more than the requirement of the anti-permeability performance of the high-iron durability concrete in China (the water seepage is not caused for 8 hours under the load of 2.1 MPa), and the material shows the ultra-high anti-permeability capability. However, in the construction and operation process of the steel-UHPC combined bridge deck system, due to the comprehensive influence of a plurality of factors such as construction quality, temperature, shrinkage, vehicle overload and the like, microcracks or visible cracks appear on the surface or inside of a pavement layer, the anti-permeability capability of the ultra-high performance concrete is weakened, and the capability of the material for resisting high water pressure permeation in the state needs to be known in the design, so that a device for testing the anti-permeability capability of the steel-UHPC combined bridge deck in the operation state is needed to test the water permeation resistance capability of the steel-UHPC combined bridge deck.
At present, the water penetration resistance of the bridge deck needs to bring a test block to be tested into a laboratory for testing, and the bridge deck is difficult to be tested on site after being used in a fatigue way.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a bridge floor water resistance permeability's testing arrangement can solve when bridge floor water resistance permeability tests effectively, needs to take the test block that awaits measuring to the problem of carrying out the test in the laboratory.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a test device for testing the water permeability resistance of a bridge deck, the test device comprising:
the water tank comprises an open end and a closed end which are oppositely arranged, a sealing plate is arranged on the outer edge of the open end, and a first through hole is formed in the closed end;
the jack is arranged on the closed end and used for pressing the water cylinder to the bridge floor to be tested;
the water pressure pump is provided with a water inlet pipe, and the water inlet pipe is communicated with the first through hole; and
and the pressure gauge is arranged on the water inlet pipe.
On the basis of the technical scheme, the testing device further comprises a water outlet pipe, the closed end is further provided with a second through hole, one end of the water outlet pipe is communicated with the second through hole, and the water outlet pipe is provided with a water stop valve.
On the basis of the technical scheme, the testing device further comprises a water discharging bucket which is arranged at the other end of the water discharging pipe.
On the basis of the technical scheme, the testing device further comprises a counter-force beam which is arranged above the jack.
On the basis of the technical scheme, the sealing plate is provided with a reinforcing plate connected with the cylinder body of the water cylinder.
On the basis of the technical scheme, the jack is a screw jack
On the basis of the technical scheme, the sealing plate is provided with a sealing groove, and a sealing ring is arranged in the sealing groove
Compared with the prior art, the utility model has the advantages of: adopt the utility model discloses a testing arrangement of bridge floor water resistance permeability can carry out the anti water permeability performance detection of bridge floor at the scene to convenient and reliable. And the testing device is simple and reliable in connection, and is easy to rapidly install and test on the bridge site.
Drawings
FIG. 1 is a schematic structural view of a device for testing the water permeability resistance of a bridge deck according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a water tank in an embodiment of the present invention.
In the figure: 1. a water vat; 11. a sealing plate; 12. a reinforcing plate; 13. a seal ring; 14. epoxy resin glue; 2. a jack; 31. a water inlet pipe; 32. a water outlet pipe; 4. a hydraulic pump; 5. a pressure gauge; 6. a water stop valve; 7. a water discharge bucket; 8. a counter-force beam; 9. a steel plate; 91. an observation hole; 10. and (5) paving the layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
FIG. 1 is a schematic structural view of a device for testing the water permeability resistance of a bridge deck according to an embodiment of the present invention; fig. 2 is the embodiment of the utility model provides a cross sectional structure schematic diagram of water jar is shown with reference to fig. 1 to fig. 2, the embodiment of the utility model provides a bridge floor water permeability resistance's testing arrangement, testing arrangement includes:
the water vat 1 comprises an open end and a closed end which are oppositely arranged, a sealing plate 11 is arranged on the outer edge of the open end, and a first through hole is formed in the closed end;
the jack 2 is arranged on the closed end and used for tightly pressing the water cylinder 1 to the bridge floor to be tested;
the water pressure pump 4 is provided with a water inlet pipe 31, and the water inlet pipe 31 is communicated with the first through hole; and
and the pressure gauge 5 is arranged on the water inlet pipe 31.
When the device is used, a test point is selected, and an observation hole is drilled in a steel plate below the test point; laying epoxy resin glue in a range matched with the sealing plate 11 on the test point on the bridge floor to form a certain thickness, and automatically leveling and curing the surface of the epoxy resin glue; arranging a sealing plate 11 on the cured epoxy resin glue, propping against the upper part of the jack 2, and rotating the jack to enable the water cylinder 1 to be closely attached to the bridge deck; turning on a hydraulic pump 4 to enable the water tank 1 to be filled with water and pressurized, and observing a pressure gauge 5 to keep the pressure in the water tank 1 within a set value for a set duration; and after the pressurization is finished, checking the water seepage condition in the observation hole, wherein if the concrete in the observation hole is dried, the water seepage resistance of the bridge deck is intact, and if the concrete in the observation hole is wet, the water seepage resistance of the bridge deck is damaged. Therefore, the testing device for the water permeability resistance of the bridge deck can be used for detecting the water permeability resistance of the bridge deck on site.
In this example, the test points were selected as the locations where the deck was most susceptible to fatigue failure, and the water impermeability of the entire deck was determined. In this embodiment, the inner diameter of the water cylinder is 120-180 mm, the wall thickness of the water cylinder is 8-12 mm, and the sealing plate 11 of the water cylinder is 18-24 mm.
Preferably, the testing device further comprises a water outlet pipe 32, a water stop valve 6 is arranged on the water outlet pipe 32, a second through hole is further formed in the closed end of the water tank 1, and one end of the water outlet pipe 32 is communicated with the second through hole.
The water outlet pipe 32 and the water stop valve 6 are arranged at the closed end of the water cylinder 1, so that when the water pressure in the water cylinder 1 is higher than the set pressure, the water outlet pipe 32 and the water stop valve 6 can be arranged at the closed end of the water cylinder 1 through the setting member for pressure relief, and the pressure in the water cylinder 1 is always in the set pressure range and keeps for the set time.
In the present embodiment, the set pressure range in the water tank 1 is 2.0Mpa to 2.2Mpa, so that the most accurate test accuracy can be obtained. The set time period was 8 hours.
Preferably, the testing device further comprises a water discharge tank 7 disposed at the other end of the water outlet pipe 32. The other end of the water outlet pipe 32 is provided with the water discharging barrel 7, so that water discharged from the water cylinder 1 can be received when the water cylinder 1 is subjected to pressure discharging, and the phenomenon that the discharged water flows onto the bridge floor to influence the wetting effect of the tested bridge floor during pressure discharging is avoided.
Preferably, the test device further comprises a counter force beam 8, which is arranged above the jack 2. Set up reaction beam 8 and can provide certain reaction force for jack 2, can make jar 1 compress tightly the bridge floor through the cooperation with jack 2 to ensure that the test result is accurate.
Preferably, the sealing plate 11 is provided with a reinforcing plate 12 connected to the cylinder body of the water cylinder 1. The reinforcing plate 12 may provide strength of the sealing plate 11 and the cylinder body of the water cylinder 1, and prevent the cylinder body structure of the sealing plate 11 and the water cylinder 1 from being damaged when the cylinder body 1 is pressed by the jack 2.
Preferably, the jack 2 is a screw jack. Screw jack can be more stable extrusion jar 1 to at extruded in-process even running, avoid producing the influence to the leakproofness of the closing plate 11 of jar 1 and bridge floor.
Preferably, the sealing plate 11 is provided with a sealing groove, and a sealing ring 13 is arranged in the sealing groove. The sealing ring 13 can further improve the sealing performance between the sealing plate 11 of the water cylinder 1 and the bridge floor, and ensure that no water is leaked between the sealing plate 11 of the water cylinder 1 and the bridge floor during testing.
Use the utility model provides a during testing arrangement of bridge floor water permeability resistance ability, adopt following step:
s1: and selecting a test point, and drilling an observation hole 91 in the steel plate 9 below the test point, wherein the selected test point is the position of the bridge deck which is most easily damaged by fatigue in the using process.
S2: and laying epoxy resin glue 14 in a range matched with the sealing plate 11 on the bridge deck to form a certain thickness, and automatically leveling and curing the surface of the epoxy resin glue 14. The self-leveling means that after the epoxy resin glue 14 is poured on the bridge floor, the epoxy resin glue 14 can flow according to the unevenness of the ground to automatically level the bridge floor, so that the sealing plate 11 of the water vat 1 can be sealed with the bridge floor.
S3: the sealing plate 11 is placed on the cured epoxy glue 14 and pressed against the top of the jack 2, and the water cylinder 1 is tightly attached to the bridge deck by the jack. In this embodiment, the reaction force beam 8 is provided above the jack 2 to abut against the top of the jack 2 and provide a reaction force to the jack 2.
S4: the water pressure pump 4 is turned on to fill the water tank 1 with water and pressurize, and the pressure gauge 5 is observed to keep the pressure in the water tank 1 within a set range for a set duration.
In this embodiment, a second through hole is provided at the closed end of the water tank 1, a water outlet pipe 32 is installed on the second through hole, and a water stop valve 6 is provided on the water outlet pipe 32.
Specifically, the water pressure pump 4 is turned on to fill the water tank 1 with water and pressurize it;
observing the pressure gauge 5, if the pressure is more than 2.2MPa, opening the water stop valve 6 to release the pressure, and if the pressure is less than 2MPa, pressurizing by using the hydraulic pump 4 so as to keep the pressure in the water cylinder 1 between 2.0MPa and 2.2MPa for 8 hours.
S5: and after the pressurization is finished, checking the water seepage condition in the observation hole, and judging whether the water seepage resistance of the bridge deck is intact according to whether the pavement layer 10 in the observation hole is dry or wet. Specifically, observing that the layer 10 within the hole is dry means that the water-resistance of the deck is intact, and observing that the layer 10 within the hole is wet or dripping means that the water-resistance of the deck is destroyed.
To sum up, adopt the utility model provides a bridge floor water resistance permeability's testing arrangement can carry out the anti water permeability performance detection of bridge floor at the scene to convenient and reliable. And the testing device is simple and reliable in connection, and is easy to rapidly install and test on the bridge site.
The present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered to be within the protection scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (7)
1. A bridge deck water permeability resistance testing arrangement, its characterized in that, testing arrangement includes:
the water tank (1) comprises an open end and a closed end which are oppositely arranged, a sealing plate (11) is arranged on the outer edge of the open end, and a first through hole is formed in the closed end;
the jack (2) is arranged on the closed end and used for pressing the water cylinder (1) to the bridge floor to be tested;
the water pressure pump (4) is provided with a water inlet pipe (31), and the water inlet pipe (31) is communicated with the first through hole; and
and the pressure gauge (5) is arranged on the water inlet pipe (31).
2. The apparatus for testing the water permeability resistance of a bridge deck according to claim 1, wherein: the testing device further comprises a water outlet pipe (32), the closed end is further provided with a second through hole, one end of the water outlet pipe (32) is communicated with the second through hole, and a water stop valve (6) is arranged on the water outlet pipe (32).
3. The apparatus for testing the water permeability resistance of a bridge deck according to claim 2, wherein: the testing device also comprises a water draining bucket (7) which is arranged at the other end of the water outlet pipe (32).
4. The apparatus for testing the water permeability resistance of a bridge deck according to claim 1, wherein: the testing device also comprises a counter-force beam (8) which is arranged above the jack (2).
5. The apparatus for testing the water permeability resistance of a bridge deck according to claim 1, wherein: and the sealing plate (11) is provided with a reinforcing plate (12) connected with the water cylinder body of the water cylinder (1).
6. The apparatus for testing the water permeability resistance of a bridge deck according to claim 1, wherein: the jack (2) is a screw jack.
7. The apparatus for testing the water permeability resistance of a bridge deck according to claim 1, wherein: and a sealing groove is arranged on the sealing plate (11), and a sealing ring (13) is arranged in the sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920548371.1U CN210051672U (en) | 2019-04-19 | 2019-04-19 | Bridge floor water permeability resistance testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920548371.1U CN210051672U (en) | 2019-04-19 | 2019-04-19 | Bridge floor water permeability resistance testing device |
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| CN210051672U true CN210051672U (en) | 2020-02-11 |
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| CN201920548371.1U Active CN210051672U (en) | 2019-04-19 | 2019-04-19 | Bridge floor water permeability resistance testing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186828A (en) * | 2019-04-19 | 2019-08-30 | 中铁大桥科学研究院有限公司 | The test device and method of bridge floor water resistant permeance property |
| CN111337413A (en) * | 2020-04-17 | 2020-06-26 | 杭州固益强新材料科技有限公司 | A impervious capability test equipment for reinforced concrete structure |
-
2019
- 2019-04-19 CN CN201920548371.1U patent/CN210051672U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186828A (en) * | 2019-04-19 | 2019-08-30 | 中铁大桥科学研究院有限公司 | The test device and method of bridge floor water resistant permeance property |
| CN111337413A (en) * | 2020-04-17 | 2020-06-26 | 杭州固益强新材料科技有限公司 | A impervious capability test equipment for reinforced concrete structure |
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