CN203249836U - Bridge deck pavement shearing strength detecting device - Google Patents
Bridge deck pavement shearing strength detecting device Download PDFInfo
- Publication number
- CN203249836U CN203249836U CN 201320303589 CN201320303589U CN203249836U CN 203249836 U CN203249836 U CN 203249836U CN 201320303589 CN201320303589 CN 201320303589 CN 201320303589 U CN201320303589 U CN 201320303589U CN 203249836 U CN203249836 U CN 203249836U
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- normal pressure
- positive pressure
- pressure loading
- shearing strength
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Abstract
The utility model discloses a bridge deck pavement shearing strength detecting device which comprises a clamping structure, a fixing bolt, a base plate, a side direction force conduction plate, pressurization equipment, a positive pressure sensor, a vertical shaft sliding structure, a positive pressure loading structure and positive pressure digital display equipment. The clamping structure and the vertical shaft sliding structure are installed on the base plate. A circular force bearing plate and a semicircular force bearing plate which load pressure force bearing components of the pressurization equipment are fixedly connected through a vertical connecting plate. The pressurization equipment pressurizes, and a vertical intersection angle is formed by the pressurization equipment and a cylindrical test piece clamped by the clamping structure. The vertical shaft sliding structure is provided and connected with a positive pressure loading bolt. Displacement of the positive pressure loading bolt along with the test piece occurs when the positive pressure loading bolt is screwed into the test piece, and the fact that the cylindrical test piece bears constant positive pressure action all the time is guaranteed. The side direction force conduction plate is installed on the end portion of the positive pressure sensor in a fastened mode, and the positive pressure sensor is installed between the cylindrical test piece and a positive pressure loading structure. The positive pressure sensor is electrically connected with the positive pressure digital display equipment. The bridge deck pavement shearing strength detecting device can detect shearing strength and non-deformability of a bridge deck pavement waterproof bonding layer.
Description
Technical field
The utility model belongs to detection and road and bridge engineering technical field, relates to a kind of deck paving shearing strength pick-up unit, is specially adapted to the detection of each articulamentum inter-layer shearing strength of bridge floor, and the detection of ground surface material core shearing strength.
Background technology
Deck paving is distinguished to some extent with the plain asphalt road surface on version, mainly is between surface layer and the concrete slab waterproofing tack coat will be set mating formation.Waterproofing tack coat can be strengthened mating formation and connect between layer and the decking, makes decking and the layer of mating formation can be good at bondingly becoming as a whole, increases the two cooperative transformation and stress-bearing capability, thereby improves the stress of the layer of mating formation, and prolongs the serviceable life of mating formation layer.The Asphalt Concrete Deck Pavement main damage forms is to mat formation to produce a larger shear stress in the layer, square upwards produces relative displacement generation shear failure at middle water; Bridge deck pavement causes bituminous concrete to produce the crack because large deflection and the temperature variation of decking produce larger tension.
Deck paving is the ingredient of bridge superstructure, directly bears the effect of traffic load and the impact of climatic environment, and protection reinforced concrete bridge deck plate is not subjected to direct abrasion and the shear action of wheel, prevents from simultaneously oozing under the moisture entering into decking inside.Deck paving be the stress layer of bridge structure also be protective seam, the structural behaviour of deck paving and quality are most important to the performance of traffic safety, road-ability and bridge function.The appearance of the diseases such as the deck paving water-proof tack coat should have good shear behavior, and the layer of avoiding mating formation gathers around bag, peels off, loose.
In order to prolong bridge serviceable life, need to detect the shearing strength of bridge deck water-proof tack coat, preferred water-proof binding layer material guarantees the usability of deck paving.Do not have for deck paving and custom-designed shear test equipment at present, be difficult to determine shearing strength and the displacement of bridge deck pavement material.
Summary of the invention
The utility model discloses a kind of deck paving shearing strength pick-up unit, to solve in the prior art deck paving without shear test equipment, be difficult to determine the problems such as the shearing strength of bridge deck pavement material and displacement.
Deck paving shearing strength pick-up unit of the present utility model comprises semicircle clamping structure, set bolt, base plate, pressurized equipment; Semicircle clamping structure is installed on the base plate by set bolt is fastening; Semicircle clamping structure is used for the fixed cylinder test specimen, put into cylindrical specimen after, fastening set bolt is completely fixed cylindrical specimen; The pressing machine load side of pressurized equipment on-load pressure load parts is a circular force bearing plate, and the cylindrical specimen side of pressure load parts is a semicircle force bearing plate identical with the cylindrical specimen radian; Be fixedly connected with by vertical web joint between circular force bearing plate and semicircle force bearing plate; The pressurized equipment plus-pressure becomes the vertical angle of cut with clamping structure clamping cylindrical specimen; Pressurized equipment takes to add on the small semicircle downward pressure that riser transmission of pressure machine produces, and is used for providing the cylindrical specimen shear action.
The utility model also comprises vertical shaft sliding apparatus, normal pressure loading structure, pressure sensor, normal pressure digital display equipment; The vertical shaft slide construction is installed on the base plate at place, apparatus for fastening end; Connection normal pressure loading structure is installed on the vertical shaft slide construction, and the movable adjustment of normal pressure loading structure can be subjected to displacement with cylindrical specimen, to guarantee that cylindrical specimen bears constant positive pressure all the time; It is corresponding with clamping structure clamping right cylinder test specimen center that the normal pressure loading structure loads the center; Pressure sensor is installed between cylindrical specimen and the normal pressure loading structure; Pressure sensor and normal pressure digital display equipment electrically connect; The fastening pressure sensor end that is installed in of side direction force transmitting board, the side direction force transmitting board with pressure all and pass to cylindrical specimen, make on the cross section of measurement and produce pressure, simulate the Vehicle Load that deck paving bears.
The utility model normal pressure loading structure is bolt; The normal pressure loading bolt is installed on the vertical shaft slide construction; Normal pressure loading bolt center and clamping structure clamping right cylinder test specimen center are corresponding; The precession of normal pressure loading bolt spiral is subjected to displacement with test specimen, guarantees that cylindrical specimen bears positive pressure all the time; The fastening pressure sensor end that is installed in of side direction force transmitting board, the side direction force transmitting board with pressure all and pass to cylindrical specimen, make on the cross section of measurement and produce pressure, simulate the Vehicle Load that deck paving bears.
Do not add the normal pressure course of work:
Test specimen to be measured is put into clamping structure, tighten set bolt, fix test specimen, note making section to be measured and clamping structure end apart from about 2mm.Pressurized equipment is placed on the cylindrical specimen, more whole test unit is put into the environmental cabinet of UTM or other loading testers, the adjusting gear position makes the loading head of testing machine act on the pressurized equipment center, prevents unbalance stress.According to test objective and requirement, can select to heat up or cooling, full water or insatiable hunger water, measure the inter-layer shearing strength of deck paving under the different conditions, adjusting the normal pressure loading structure does not affect normal detection.
Add the normal pressure course of work:
With pressure sensor one end and cylindrical specimen and side direction force transmitting board near, the other end and normal pressure loading structure near, load with the bolt precession, until the data that tensimeter shows satisfy test request.The normal pressure loading structure can slide at the vertical shaft slide construction, does not affect the loading of test specimen normal pressure.Start the pressurization of UTM or other loading testers, other test processs are identical when not adding normal pressure.For preventing that the loading effect of normal pressure loading structure is subject to the impact of test specimen displacement, normal pressure loading structure and vertical shaft slide construction are fixed, can be subjected to displacement with test specimen, to guarantee that test specimen bears positive pressure all the time.
Good effect of the present utility model is: shearing strength and the non-deformability that can detect the deck paving water-proof tack coat, in conjunction with test findings, can select suitable bridge deck water-proof tack coat material according to the different stresses of bridge, improve road-ability and the serviceable life of bridge.
Description of drawings
Fig. 1 is the utility model structural representation;
Among the figure: 1 clamping structure, 2 set bolts, 3 base plates, 4 side direction force transmitting boards, 5 pressurized equipments, 6 pressure sensors, 7 vertical shaft slide constructions, 8 normal pressure loading structures, 9 normal pressure digital display equipment.
Embodiment
The first embodiment of the present utility model, as shown in Figure 1: the utility model comprises clamping structure 1, set bolt 2, base plate 3, side direction force transmitting board 4, pressurized equipment 5, pressure sensor 6, vertical shaft slide construction 7, normal pressure loading structure 8, normal pressure digital display equipment 9; Semicircle clamping structure 1 is installed on the base plate 3; Vertical shaft slide construction 7 is installed on the base plate 3 at place, apparatus for fastening 1 end; Semicircle clamping structure 1 is used for the fixed cylinder test specimen, put into cylindrical specimen after, fastening set bolt 2 is completely fixed cylindrical specimen; The pressing machine load side of pressurized equipment on-load pressure load parts is a circular force bearing plate, and the cylindrical specimen side of pressure load parts is a semicircle force bearing plate identical with the cylindrical specimen radian; Be fixedly connected with by vertical web joint between circular force bearing plate and semicircle force bearing plate; The pressurized equipment plus-pressure becomes the vertical angle of cut with clamping structure clamping cylindrical specimen; Connection normal pressure loading structure 8 is installed on the vertical shaft slide construction 7, and normal pressure loading structure 8 is bolt; The normal pressure loading bolt is installed on the vertical shaft slide construction 7; Normal pressure loading bolt center and clamping structure 1 clamping right cylinder test specimen center are corresponding; The precession of normal pressure loading bolt spiral is subjected to displacement with test specimen, guarantees that test specimen to be measured bears positive pressure all the time; Side direction force transmitting board 4 fastening pressure sensor 6 ends that are installed in, normal pressure loading structure 8 loading centers and clamping structure 1 clamping right cylinder test specimen to be measured center are corresponding; Pressure sensor 6 is installed between right cylinder test specimen to be measured and the normal pressure loading structure 8; Pressure sensor 6 electrically connects with normal pressure digital display equipment 9; Side direction force transmitting board 4 with pressure all and pass to test specimen to be measured, make on the cross section of measurement and produce pressure, simulate the Vehicle Load that deck paving bears.
Pressurized equipment takes to add on the small semicircle downward pressure that riser transmission of pressure machine produces, and is used for providing the cylindrical specimen shear action.Side direction force transmitting board 4 with pressure all and pass to test specimen to be measured, make on the cross section of measurement and produce pressure, simulate the Vehicle Load that deck paving bears.
Do not add the normal pressure course of work:
Test specimen to be measured is put into apparatus for fastening 1, tighten set bolt 2, fix test specimen, note making cylindrical specimen section to be measured and apparatus for fastening 1 end apart from about 2mm.Pressurized equipment 5 is placed on the cylindrical specimen, more whole test unit is put into the environmental cabinet of UTM or other loading testers, the adjusting gear position makes the loading head of testing machine act on pressurized equipment 5 centers, prevents unbalance stress.According to test objective and requirement, can select to heat up or lower the temperature, satisfy water or insatiable hunger water, measure the inter-layer shearing strength of deck paving under the different conditions, adjust normally detection of impact of normal pressure loading structure 8.
Add the normal pressure course of work:
With pressure sensor one end and test specimen to be measured and side direction force transmitting board near, the other end and normal pressure loading structure 8 near, load with the bolt precession, until the data that tensimeter shows satisfy test request.Normal pressure loading structure 8 can slide at vertical shaft slide construction 7, does not affect the loading of test specimen normal pressure.Start the pressurization of UTM or other loading testers, other test processs are identical when not adding normal pressure.For preventing that the loading effect of normal pressure loading structure 8 is subject to the impact of test specimen displacement, normal pressure loading structure 8 is fixing with vertical shaft slide construction 7, can be subjected to displacement with test specimen, to guarantee that test specimen bears positive pressure all the time.
Implement to measure 1: the rubber-asphalt waterproof tack coat, test temperature-20 ℃, full water state, without normal pressure, shearing strength 1.60MPa, displacement 2.577mm.
Implement to measure 2:SBS modified asphalt waterproof tack coat, 50 ℃ of test temperatures, full water state, without normal pressure, shearing strength 0.07MPa, displacement 8.823mm.
Implement to measure 3: the high-viscosity asphalt water-proof tack coat, without normal pressure, 20 ℃ of test temperatures, drying regime, shearing strength 0.17MPa, displacement 10.311mm.
Implement to measure 4: high-viscosity asphalt water-proof tack coat, normal pressure 10kN, 20 ℃ of test temperatures, drying regime, shearing strength 1.18MPa, displacement 10.383mm.
Test unit according to the design of the stress of bridge floor, cooperate the experiment loading units such as UTM, can measure under different temperatures, the different humidity condition, the shearing strength of deck paving water-proof tack coat during different normal pressure, the usability of clear and definite deck paving under the adverse condition such as Different climate and Load Combination.
Claims (3)
1. deck paving shearing strength pick-up unit; It is characterized in that: comprise semicircle clamping structure, set bolt, base plate, pressurized equipment; Semicircle clamping structure is installed on the base plate by set bolt is fastening; The pressing machine load side of pressurized equipment pressure load parts is a circular force bearing plate, and the cylindrical specimen side of pressure load parts is a semicircle force bearing plate identical with the cylindrical specimen radian; Be fixedly connected with by vertical web joint between circular force bearing plate and semicircle force bearing plate; The pressurized equipment plus-pressure becomes the vertical angle of cut with clamping structure clamping cylindrical specimen.
2. deck paving shearing strength pick-up unit according to claim 1; It is characterized in that: also comprise vertical shaft sliding apparatus, normal pressure loading structure, pressure sensor, normal pressure digital display equipment; The vertical shaft slide construction is installed on the base plate at place, apparatus for fastening end; Connection normal pressure loading structure is installed on the vertical shaft slide construction, and the movable adjustment of normal pressure loading structure can be subjected to displacement with cylindrical specimen; It is corresponding with clamping structure clamping right cylinder test specimen center that the normal pressure loading structure loads the center; Pressure sensor is installed between cylindrical specimen and the normal pressure loading structure; Pressure sensor and normal pressure digital display equipment electrically connect; The fastening pressure sensor end that is installed in of side direction force transmitting board.
3. deck paving shearing strength pick-up unit according to claim 2; It is characterized in that: the normal pressure loading structure is bolt; The normal pressure loading bolt is installed on the vertical shaft slide construction; Normal pressure loading bolt center is corresponding with clamping structure clamping right cylinder test specimen center; The precession of normal pressure loading bolt spiral is subjected to displacement with test specimen, guarantees that cylindrical specimen bears constant positive pressure all the time; The fastening pressure sensor end that is installed in of side direction force transmitting board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320303589 CN203249836U (en) | 2013-05-30 | 2013-05-30 | Bridge deck pavement shearing strength detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320303589 CN203249836U (en) | 2013-05-30 | 2013-05-30 | Bridge deck pavement shearing strength detecting device |
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| CN203249836U true CN203249836U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320303589 Expired - Lifetime CN203249836U (en) | 2013-05-30 | 2013-05-30 | Bridge deck pavement shearing strength detecting device |
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| CN (1) | CN203249836U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580385A (en) * | 2018-11-16 | 2019-04-05 | 北京东方雨虹防水技术股份有限公司 | Waterproof layer resists the test equipment and its test method of underground engineering valve pit subsidence |
| CN112815862A (en) * | 2020-12-31 | 2021-05-18 | 江苏中路工程技术研究院有限公司 | Steel bridge deck pavement interlayer bonding state monitoring system and void detection method |
-
2013
- 2013-05-30 CN CN 201320303589 patent/CN203249836U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580385A (en) * | 2018-11-16 | 2019-04-05 | 北京东方雨虹防水技术股份有限公司 | Waterproof layer resists the test equipment and its test method of underground engineering valve pit subsidence |
| CN109580385B (en) * | 2018-11-16 | 2022-03-18 | 北京东方雨虹防水技术股份有限公司 | Test equipment and test method for resisting underground engineering settlement damage of waterproof layer |
| CN112815862A (en) * | 2020-12-31 | 2021-05-18 | 江苏中路工程技术研究院有限公司 | Steel bridge deck pavement interlayer bonding state monitoring system and void detection method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |
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| CX01 | Expiry of patent term |