CN210572313U - Shield constructs section of jurisdiction concrete mixture capability test device - Google Patents
Shield constructs section of jurisdiction concrete mixture capability test device Download PDFInfo
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- CN210572313U CN210572313U CN201921089874.3U CN201921089874U CN210572313U CN 210572313 U CN210572313 U CN 210572313U CN 201921089874 U CN201921089874 U CN 201921089874U CN 210572313 U CN210572313 U CN 210572313U
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Abstract
The utility model relates to a shield constructs section of jurisdiction concrete mix capability test device belongs to the technical field that the shield constructs section of jurisdiction concrete, and it includes funnel, annular slab, round steel, vibration pedestal, the vertical setting of funnel, the lateral surface that the funnel was located to annular slab level setting and annular slab cover, annular slab and funnel fixed connection, the vertical setting of round steel just is connected with the annular slab, and the vibration pedestal is located the bottom of round steel, the utility model discloses have the comprehensive properties's such as cohesiveness, thixotropy, the fillibility that can comprehensively reflect shield constructs section of jurisdiction concrete mix effect.
Description
Technical Field
The utility model belongs to the technical field of the technique of shield structure section of jurisdiction concrete and specifically relates to a shield constructs section of jurisdiction concrete mix capability test device is related to.
Background
The shield segment is a main assembly component for shield construction, is the innermost barrier of the tunnel and plays a role in resisting soil layer pressure, underground water pressure and some special loads. The existing shield segment is dense in reinforcing bars, the requirement on the appearance quality of the segment is high, the concrete mixture of the segment has good cohesiveness, thixotropy and filling property, the slump of the concrete mixture of the shield segment is generally less than 120mm, and the slump of the concrete mixture of the shield segment is generally 40-120mm in field use.
The existing standard test methods, such as slump, expansion, inverted slump emptying time, clearance trafficability and the like, are suitable for evaluating the performance of concrete mixtures with slump larger than 180mm, and the compaction factor method is suitable for evaluating concrete with slump smaller than 50mm and dry hardness; the methods such as the coaxial cylinder rotary rheometer and the vane rheometer are suitable for evaluating the viscosity of the concrete mixture; the performance of the concrete mixture of the shield segment can only be measured.
The above prior art solutions have the following drawbacks: the comprehensive performances of cohesiveness, thixotropy, filling property and the like of the shield segment concrete mixture cannot be comprehensively reflected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a comprehensive properties's such as cohesiveness, thixotropy, packing that can synthesize reflect shield constructs section of jurisdiction concrete mixture capability test device.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a shield constructs section of jurisdiction concrete mix capability test device, includes funnel, annular slab, round steel, vibration pedestal, the lateral surface of funnel is located to the vertical setting of funnel, annular slab level setting and annular slab cover, annular slab and funnel fixed connection, the vertical setting of round steel and be connected with the annular slab, the vibration pedestal is located the bottom of round steel.
By adopting the technical scheme, on the premise that the slump of the concrete mixture of the shield segment is 40-120mm, the bottom of the funnel is blocked, concrete is placed in the funnel, the vibration pedestal is opened, the bottom of the funnel is opened, timing is started while the bottom of the funnel is opened, the vibration pedestal drives the round steel and the funnel to vibrate, and the concrete falls onto the vibration pedestal from the interior of the funnel; concrete that falls down on the vibration pedestal is under high-frequency vibration's effect, the scope at extension packing round steel place, fill the edge to the round steel until the concrete, stop the timing, the vibrating table simulates the tamping in the actual production of shield section of jurisdiction, the reinforcing bar in the actual production of round steel simulation shield section of jurisdiction, concrete extension packing round steel under the vibration, the influence of reinforcing bar to comprehensive properties such as concrete mixture thixotropy filling nature in the simulation shield section of jurisdiction actual production, and quantify comprehensive properties such as concrete mixture thixotropy filling nature with the time value, thereby can obtain a comprehensive reflection to the comprehensive properties of shield section of jurisdiction concrete mixture.
The utility model discloses further set up to: the bottom of funnel articulates there is sealed lid, is connected with the hasp that can open and close fast on the funnel, and sealed lid passes through the hasp to be connected with the funnel.
Through adopting above-mentioned technical scheme, when placing the concrete in to the funnel, rotate sealed lid to level, it is closed with the hasp again, sealed lid is about to the bottom of funnel and plugs up, and it is comparatively convenient to make the bottom of funnel seal, holds the concrete and finishes the back, opens the hasp, and sealed lid rotates to vertical promptly to the bottom of funnel is opened promptly, makes the bottom of funnel be convenient for quick opening and closure.
The utility model discloses further set up to: the lower surface of the annular plate is fixedly connected with a nut, and the top end of the round steel is in threaded connection with the nut.
Through adopting above-mentioned technical scheme, rotate the round steel, can separate round steel and annular slab, make the round steel easily dismantle and assemble to, the round steel is dismantled the back of getting off, makes round steel and funnel wash respectively, makes the washing of round steel and funnel more convenient.
The utility model discloses further set up to: the volume of the capacity of the funnel is not less than 1.5 times of the volume of the standard slump cone.
Through adopting above-mentioned technical scheme, make the concrete have great volume, guarantee that the concrete can fill after falling on the shaking table and extend outside the round steel.
The utility model discloses further set up to: the bottom of funnel sets up the feed opening of drum shape.
By adopting the technical scheme, the concrete can vertically fall, the edge dispersion and the scattering of the concrete in the process of falling to the vibrating table are avoided, and the accuracy of the measuring result is improved.
The utility model discloses further set up to: the top end of the funnel is provided with a cylindrical feed inlet.
By adopting the technical scheme, only one section of the feed inlet is arranged at the top end of the funnel, so that the opening area of the feed inlet is larger under the condition of keeping the volume of the funnel, and the funnel is favorably filled with materials; after the concrete is filled, the excess concrete is scraped off, and the surface is trowelled, and because the feed inlet is in a cylindrical shape, when trowelling, the concrete at the edge is not easy to be driven by the trowel, so that the surface is not flat, and the trowelling operation is more convenient.
The utility model discloses further set up to: the annular plate comprises an annular first plate and an annular second plate, and the annular first plate and the annular second plate are arranged up and down.
Through adopting above-mentioned technical scheme, the round steel of connecting on the two annular boards is close to the funnel more to the round steel is more stable to the support of funnel, is favorable to reducing the deformation of funnel.
The utility model discloses further set up to: the vibration pedestal is an electromagnetic high-frequency vibration table.
Through adopting above-mentioned technical scheme, electromagnetic high-frequency vibration platform starts the back and is playing the effect of vibrating to the round steel, and the round steel drives annular slab and funnel vibration, can produce strong magnetism simultaneously and fix the round steel attraction on the vibration pedestal, makes the round steel not take place relative movement, makes the concrete comparatively stable in the department of falling on the vibration pedestal, is favorable to improving measuring result's accuracy.
To sum up, the utility model discloses a beneficial technological effect does:
1. by arranging the funnel, the annular plate, the round steel and the vibration pedestal, the comprehensive performances such as thixotropy filling property of the concrete mixture can be quantified by using a time value, so that the comprehensive performances of the concrete mixture of the shield segment can be comprehensively reflected;
2. by arranging the sealing cover and the lock catch, the bottom end of the funnel is convenient to open and close quickly;
3. through setting up the nut, make the round steel easily dismantle and assemble, make the washing of round steel and funnel more convenient simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
fig. 3 is a schematic view showing the opened state of the sealing cover of the present invention.
In the figure, 1, a funnel; 11. a feeding port; 12. a feed inlet; 2. an annular plate; 21. a ring-shaped plate; 22. a ring-shaped second plate; 221. a nut; 3. round steel; 4. a vibration pedestal; 5. a sealing cover; 51. and (5) locking.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the concrete mixture performance testing device of shield segment disclosed by the utility model, comprising a funnel 1, an annular plate 2, round steel 3, a vibration pedestal 4, wherein the funnel 1 is vertically arranged, the annular plate 2 is horizontally arranged and the annular plate 2 is sleeved on the outer side surface of the funnel 1, the annular plate 2 is fixedly connected with the funnel 1, the round steel 3 is vertically arranged and the top end of the round steel 3 is connected with the lower surface of the annular plate 2, the vibration pedestal 4 is positioned at the bottom of the round steel 3, the vibration pedestal 4 is an electromagnetic high-frequency vibration table, the bottom of the funnel 1 is hinged with a sealing cover 5, the funnel 1 is connected with a lock catch 51 which can be rapidly opened and closed, the lock catch 51 is a hasp, the sealing cover 5 is connected with the funnel 1 through the lock catch 51, the volume of the funnel 1 is not less than 1.5 times of the volume of a standard slump cone, the concrete can be filled and expanded to, the bottom end of the funnel 1 is provided with a cylindrical feed opening 11, and the top end of the funnel 1 is provided with a cylindrical feed opening 12.
Referring to fig. 1, the annular plate 2 comprises an annular first plate 21 and an annular second plate 22, the annular first plate 21 and the annular second plate 22 are arranged up and down, the annular first plate 21 is located above the annular second plate 22, the annular first plate 21 is connected with eight round steels 3, the distances from the eight round steels 3 to the axis of the funnel 1 are the same, the annular second plate 22 is connected with four round steels 3, the distances from the four round steels 3 to the axis of the funnel 1 are the same, the bottom ends of the round steels 3 connected with the annular first plate 21 and the annular second plate 22 are flush, the four round steels 3 on the annular second plate 22 are uniformly distributed, the four round steels 3 on the annular second plate 22 are sequentially connected to form a rectangle, the two ends of the connecting line of any two adjacent round steels 3 on the annular second plate 22 extend, the twelve round steels 3 are arranged in a groined shape, the four round steels 3 on the annular second plate 22 are arranged at four intersection points in the groined shape, the eight round steels 3 on the annular first plate 21 are respectively located, twelve round steel 3 bottoms are on a horizontal plane after fixing, and the distribution of round steel 3 is further accurate the distribution of the actual production reinforcing bar of simulation shield tunnel segment.
Referring to fig. 3, when the concrete mixer is used, concrete mixture is contained in a funnel 1, a vibration pedestal 4 is opened, a lock catch 51 of a sealing cover 5 is opened, timing is started while the lock catch 51 is opened, twelve round steel 3 are attracted and fixed on a vibration table by the strong magnetism of the vibration pedestal 4, the concrete falls on the vibration table from a discharge port 11 of the funnel 1 under the action of high-frequency vibration, the concrete falling on the vibration table is expanded and filled with four round steel 3 on the inner side under the action of high-frequency vibration, eight round steel 3 on the outer side are continuously expanded and filled, timing is stopped after the eight round steel 3 on the outer side are filled, the sequential time is used as a concrete comprehensive performance value, and then the concrete mixture is used on site; and performing field multiple tests to finally obtain the optimal state time range of the concrete mixture. Therefore, when the on-site construction is carried out, the comprehensive property of the concrete mixture can be measured, and if the comprehensive property value is within the optimal state time range, the comprehensive property of the concrete mixture is better.
Referring to fig. 1, funnel 1 is made by the steel sheet that thickness is 2mm, and funnel 1's internal surface is through processing, makes funnel 1's surface comparatively smooth, makes the difficult adhesion of shield segment concrete mixture to funnel 1's internal surface, funnel 1's upper mouth diameter 200mm, and the 12 high 50mm of feed inlet, funnel 1's lower mouth diameter 75mm, and the 11 high 50mm of feed inlet, funnel 1's centrum part height 300 mm. The sealing cap 5 has a diameter of 80mm and a thickness of 2 mm. Round steel 3 is made by steel or stainless steel, and round steel 3 diameter is 16mm, and the horizontal plane distance funnel 1 discharge gate height of round steel 3 bottom is 200 mm. The thickness of the annular plate 2 is 4mm, the diameter of the annular first plate 21 is 300mm and the diameter of the annular second plate 22 is 150 mm.
Referring to fig. 1, a nut 221 is fixedly connected to the lower surface of the annular plate 2, the axis of the nut 221 is vertical, the top end of the round steel 3 is in threaded connection with the nut 221, screw holes are formed in the annular plate 2, and the screw holes are opposite to the nut 221 in the vertical direction one by one. Rotate round steel 3, can pull down round steel 3 from between the annular plate 2, make convenient to detach between round steel 3 and the annular plate 2, and the back is pulled down to round steel 3, and round steel 3 is comparatively convenient with the washing of funnel 1.
The implementation principle of the embodiment is as follows: when the device is used, the sealing cover 5 is locked by the lock catch 51, concrete mixture is contained in the funnel 1, the vibration pedestal 4 is opened, the lock catch 51 of the sealing cover 5 is opened at the same time, the twelve round steel 3 are attracted and fixed on the vibration platform by the strong magnetism of the vibration pedestal 4, and the round steel 3 is not easy to move relative to the pedestal; under the action of high-frequency vibration, concrete falls on a vibration table from a feed opening 11 of the funnel 1; the concrete falling onto the vibrating table is expanded and filled with the four round steel 3 on the inner side and is continuously expanded and filled with the eight round steel 3 on the outer side under the action of high-frequency vibration, and the comprehensive performances such as cohesiveness, thixotropy, filling property and the like of the concrete mixture of the shield segment are evaluated through testing the expansion degree in a certain time.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a shield constructs section of jurisdiction concrete mixture capability test device which characterized in that: including funnel (1), annular slab (2), round steel (3), vibration pedestal (4), the lateral surface of funnel (1) is located to funnel (1) vertical setting, annular slab (2) level setting and annular slab (2) cover, annular slab (2) and funnel (1) fixed connection, and round steel (3) vertical setting just is connected with annular slab (2), and vibration pedestal (4) are located the bottom of round steel (3).
2. The shield segment concrete mixture performance testing device of claim 1, characterized in that: the bottom of funnel (1) articulates there is sealed lid (5), is connected with hasp (51) that can open and shut fast on funnel (1), and sealed lid (5) are connected with funnel (1) through hasp (51).
3. The shield segment concrete mixture performance testing device of claim 1, characterized in that: the lower surface of the annular plate (2) is fixedly connected with a nut (221), and the top end of the round steel (3) is in threaded connection with the nut (221).
4. The shield segment concrete mixture performance testing device of claim 1, characterized in that: the volume of the capacity of the funnel (1) is not less than 1.5 times of the volume of the standard slump cone.
5. The shield segment concrete mixture performance testing device of claim 1, characterized in that: the bottom of funnel (1) sets up feed opening (11) of drum shape.
6. The shield segment concrete mixture performance testing device of claim 1, characterized in that: the top end of the funnel (1) is provided with a cylindrical feed inlet (12).
7. The shield segment concrete mixture performance testing device of claim 1, characterized in that: the annular plate (2) comprises an annular first plate (21) and an annular second plate (22), and the annular first plate (21) and the annular second plate (22) are arranged up and down.
8. The shield segment concrete mixture performance testing device of claim 1, characterized in that: the vibration pedestal (4) is an electromagnetic high-frequency vibration table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921089874.3U CN210572313U (en) | 2019-07-11 | 2019-07-11 | Shield constructs section of jurisdiction concrete mixture capability test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921089874.3U CN210572313U (en) | 2019-07-11 | 2019-07-11 | Shield constructs section of jurisdiction concrete mixture capability test device |
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| Publication Number | Publication Date |
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| CN210572313U true CN210572313U (en) | 2020-05-19 |
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| CN201921089874.3U Active CN210572313U (en) | 2019-07-11 | 2019-07-11 | Shield constructs section of jurisdiction concrete mixture capability test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238308A1 (en) * | 2020-05-28 | 2021-12-02 | 中交一公局集团有限公司 | Inspection mold, vibration inspection apparatus, and asphalt mixture fluidity measurement method |
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2019
- 2019-07-11 CN CN201921089874.3U patent/CN210572313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238308A1 (en) * | 2020-05-28 | 2021-12-02 | 中交一公局集团有限公司 | Inspection mold, vibration inspection apparatus, and asphalt mixture fluidity measurement method |
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