CN204594855U - The instrument of tunnel concrete water pressure permeability test under Simulated Water - Google Patents
The instrument of tunnel concrete water pressure permeability test under Simulated Water Download PDFInfo
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- CN204594855U CN204594855U CN201520319566.0U CN201520319566U CN204594855U CN 204594855 U CN204594855 U CN 204594855U CN 201520319566 U CN201520319566 U CN 201520319566U CN 204594855 U CN204594855 U CN 204594855U
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Abstract
The utility model discloses the instrument of tunnel concrete water pressure permeability test under a kind of Simulated Water, comprise nitrogen cylinder, stainless steel water receiver, pressure chamber, pressure regulating valve and pipeline; Nitrogen cylinder provides pressure, regulates the pressure needed for test by the tensimeter of bottle mouth position and the pressure regulating valve of bottom; Nitrogen enters stainless steel water receiver by pipeline, applies pressure, the concrete prefabricated test block in fluid inflow pressure room to liquid wherein, applies relevant pressure to its sidewall; Force value in tensimeter display water receiver above water receiver; Have 4 pressure chambers, once can to 4 test block pressurizations, there is independently inlet valve each pressure chamber; There is through reserved cylinder water-feeding hole in the middle of prefabricated test block, during test, water-feeding hole is aimed at the water-feeding hole bottom pressure chamber.The beneficial effects of the utility model are: simulate the environment residing for submerged tunnel concrete better.Whole infiltration experiment device structure is simple, simple to operate, easy to use, is applicable to high performance concrete.
Description
Technical field
The utility model relates to a kind of water pressure infiltration experiment device, the instrument of tunnel concrete water pressure permeability test under especially a kind of Simulated Water.
Background technology
Carry out the concrete infiltrative research of submerged tunnel, indispensable ingredient in tunnel permanance research, also has important practical significance to the evaluation of tunnel concrete permanance and the design of tunnel high durability concrete beyond doubt.Close relationship is had between concrete permeability and permanance.Such as, chemical erosion causes because water and erosion carbon dioxide infiltrate concrete; Steel bar corrosion is caused by protective seam, passivating film are destroyed; Concrete freeze-thaw damage causes owing to infiltrating concrete water icing frost heave under subzero temperature.
Submerged tunnel concrete is in underwater environment, and by extraneous hydraulic pressure effect outside it, inner side is in atmospheric environment, and interior outside exists differential water pressures.It is the important factor in order of submerged tunnel concrete pressure infiltration that water pressure exists, and existing pressure permeation equipment mainly applies extraneous water pressure to test block, can not to meet under Simulated Water outside in tunnel concrete and there is the situation of differential water pressures.
The domestic concrete environment not yet having simulation submerged tunnel, the patent of moisture penetration test unit and test method in high performance concrete under pressure head.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of rational in infrastructure, simple to operate, easy to use, is applicable to the instrument of tunnel concrete water pressure permeability test under the Simulated Water of high performance concrete.
The instrument of tunnel concrete water pressure permeability test under this Simulated Water, comprises nitrogen cylinder, stainless steel water receiver, pressure chamber, pressure regulating valve and pipeline; Nitrogen cylinder provides pressure, regulates the pressure needed for test by the tensimeter of bottle mouth position and the pressure regulating valve of bottom; Nitrogen enters stainless steel water receiver by pipeline, applies pressure, the concrete prefabricated test block in fluid inflow pressure room to liquid wherein, applies relevant pressure to its sidewall; Force value in tensimeter display water receiver above water receiver; Have 4 pressure chambers, once can to 4 test block pressurizations, there is independently inlet valve each pressure chamber; There is through reserved cylinder water-feeding hole in the middle of prefabricated test block, during test, water-feeding hole is aimed at the water-feeding hole bottom pressure chamber.
As preferably: described pressure chamber is only provided with water-feeding hole at bottom centre position.
As preferably: in described pressure chamber, prefabricated test block has silica gel pad and lower gasket center drilling up and down respectively.
As preferably: described pressure chamber upper cover has stainless-steel sheet, fixes with six roots of sensation lever, and be cylindrical coil fastening-type pressure chamber, its surrounding is transparent plastic locular wall.
As preferably: it is truncated cone-shaped that described pressure permeation tests prefabricated test block.
The beneficial effects of the utility model are: by the pattern of pressure of new middle water flowing, by atmospheric pressure outside test block, simulate the environment residing for submerged tunnel concrete better.Controllable pressure device energy accurate stable ground controls water pressure, and whole infiltration experiment device structure is simple, simple to operate, easy to use, is applicable to high performance concrete.This pressure apparatus can provide high and stable pressure for test, carries out independent control, facilitate the setting of test to each test block.The pattern of pressure of middle water flowing avoids that to need the sealing of test block remaining surface loaded down with trivial details over, in the middle of concrete, duct is equivalent to the lateral surface of submerged tunnel, be subject to the effect of water pressure, communicate with the external world outside concrete test block and bear atmospheric pressure, be equivalent to inside submerged tunnel.The reserved of duct makes follow-up sampling procedure become simple, only need cut open with pressure testing machine, directly can measure length of penetration.
Accompanying drawing explanation
Fig. 1 is this patent schematic diagram;
Fig. 2 is this patent pressure permeation instrument structural map;
Fig. 3 is this patent pressure permeation instrument sectional view;
Description of reference numerals: test block 1, water-feeding hole 2, silica gel pad 3, pressure chamber 4, stainless-steel sheet 5, steel pole 6, single pressure chamber water inlet pipe 7, single pressure chamber drainpipe 8, inlet valve 9, water inlet manifold 10, water receiver 11, nitrogen cylinder 12, water receiver tensimeter 13, nitrogen pressure table 14, water inlet pipe tensimeter 15, instrument platform 16
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model will be described in conjunction with preferred embodiment, should know, not represent the utility model restriction in the described embodiment.On the contrary, the utility model will contain can be included in attached claims limit scope of the present utility model in alternative, modified and equivalent.
As shown in Figure 1 to Figure 3, under this Simulated Water of the present embodiment, tunnel concrete water pressure infiltration experiment device is made up of nitrogen cylinder 12, stainless steel water receiver 11, pressure chamber 4, pressure regulating valve 9 and pipeline more than 10 part.Nitrogen cylinder 12 provides pressure, regulates the pressure needed for test by the tensimeter 14 of bottle mouth position and the pressure regulating valve of bottom.Nitrogen enters stainless steel water receiver 11 by pipeline 10, applies pressure, the concrete prefabricated test block 1 in fluid inflow pressure room 4 to liquid wherein, applies relevant pressure to its sidewall.Whether the tensimeter 13 above water receiver 11 shows the force value in water receiver 11, by this value compared with the force value in nitrogen cylinder 12 exit, can leak gas by verification system.This complete equipment has 4 pressure chambers 4, and once can pressurize to 4 test blocks 1, there is independently inlet valve 9 each pressure chamber, can control separately.Through reserved cylindrical cavity 2 is had in the middle of prefabricated test block 1, during test, cylindrical cavity 2 is aimed at the water-feeding hole bottom pressure chamber, in described pressure chamber, prefabricated test block about 1 has thickness to be the silica gel pad 3 of 1cm and lower gasket center drilling respectively, plays good sealing function.Described pressure chamber upper cover has thickness to be the stainless-steel sheet 5 of 2cm, and fixing with six roots of sensation lever 6, is cylindrical coil fastening-type pressure chamber, and its surrounding adopts transparent material to be made.It is truncated cone-shaped that described pressure permeation tests prefabricated test block 1.Be of a size of upper base 175mm, go to the bottom 185mm, high 150mm, and it is 6mm that diameter is left in test block center, the cylindrical cavity 2 of up/down perforation.The pressure needed for test is regulated by the tensimeter 14 of nitrogen cylinder 12 bottle mouth position and the pressure regulating valve of bottom.Nitrogen enters stainless steel water receiver 11 by pipeline, applies pressure, the concrete prefabricated test block 1 in fluid inflow pressure room 4 to liquid wherein, applies relevant pressure to its sidewall.Tensimeter 13 above water receiver 11 is shown force value in water receiver 11 compared with the force value in nitrogen cylinder 12 exit, can whether leak gas by verification system.So this pressure apparatus can provide high and stable pressure for test, independent control is carried out to each test block, facilitates the setting of test.
The concrete infiltration method for testing of physical simulation submerged tunnel environment, operation steps:
The first step: first pressure chamber base is dried, put silicagel pad, concrete test block 1 clean for prior surface wipes is placed on silica gel pad, test block 1 upper surface also puts the same silica gel pad of size 3, finally cover stainless-steel sheet 5, tighten the fixed screw on top;
Second step: the valve opening water receiver 11 bottom, with water pump by water suction water receiver 11; Open two valves between nitrogen cylinder 12 and water receiver 11, and open nitrogen cylinder 12, be adjusted to required pressure, guarantee that water receiver tensimeter 13 is consistent with the reading of nitrogen pressure table 14;
3rd step: the inlet valve 9 opening pressure chamber 4 after pressure stability, starts test;
4th step: after completing test to the schedule time, closing presure room 4 inlet valve 9, take out test block 1, on pressure testing machine, centrally rive in duct;
5th step: measure length of penetration with vernier caliper after riving, average.
According to the operating condition of test of setting, finally obtain the test findings of moisture penetration, after moisture permeates the corresponding time in concrete, by test block centrally circular hole rive, the moisture penetration path profile obtained, with vernier caliper, corresponding length of penetration is measured at a certain distance to each test block, and then averages, obtain the length of penetration of moisture under this operating mode.
Claims (5)
1. the instrument of tunnel concrete water pressure permeability test under Simulated Water, is characterized in that: comprise nitrogen cylinder (12), stainless steel water receiver (11), pressure chamber (4), pressure regulating valve (9) and pipeline (10); Nitrogen cylinder (12) provides pressure, regulates the pressure needed for test by the tensimeter (14) of bottle mouth position and the pressure regulating valve of bottom; Nitrogen enters stainless steel water receiver (11) by pipeline (10), applies pressure, the concrete prefabricated test block (1) in fluid inflow pressure room (4) to liquid wherein, applies relevant pressure to its sidewall; Force value in the tensimeter (13) display water receiver (11) of water receiver (11) top; Have 4 pressure chambers (4), once can to 4 test block (1) pressurizations, each pressure chamber (4) have independently inlet valve (9); There is through reserved cylinder water-feeding hole (2) in the middle of prefabricated test block (1), during test, cylindrical cavity (2) is aimed at the water-feeding hole (2) of bottom, pressure chamber (4).
2. the instrument of tunnel concrete water pressure permeability test under Simulated Water according to claim 1, is characterized in that: described pressure chamber (4) are only provided with water-feeding hole (2) at bottom centre position.
3. the instrument of tunnel concrete water pressure permeability test under Simulated Water according to claim 1, is characterized in that: in described pressure chamber (4), prefabricated test block (1) has silica gel pad (3) and lower gasket center drilling up and down respectively.
4. the instrument of tunnel concrete water pressure permeability test under Simulated Water according to claim 1, it is characterized in that: described pressure chamber (4) are stamped stainless-steel sheet (5), fix with six roots of sensation lever (6), for cylindrical coil fastening-type pressure chamber, its surrounding is transparent plastic locular wall.
5. the instrument of tunnel concrete water pressure permeability test under Simulated Water according to claim 1, is characterized in that: it is truncated cone-shaped that described pressure permeation tests prefabricated test block (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520319566.0U CN204594855U (en) | 2015-05-15 | 2015-05-15 | The instrument of tunnel concrete water pressure permeability test under Simulated Water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520319566.0U CN204594855U (en) | 2015-05-15 | 2015-05-15 | The instrument of tunnel concrete water pressure permeability test under Simulated Water |
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| Publication Number | Publication Date |
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| CN204594855U true CN204594855U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520319566.0U Expired - Fee Related CN204594855U (en) | 2015-05-15 | 2015-05-15 | The instrument of tunnel concrete water pressure permeability test under Simulated Water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819924A (en) * | 2015-05-15 | 2015-08-05 | 浙江大学城市学院 | Instrument and test method for simulating underwater tunnel concrete water pressure penetration test |
| CN108152121A (en) * | 2018-01-17 | 2018-06-12 | 中国科学院武汉岩土力学研究所 | A kind of concrete accelerated erosion device for applying flowing water and high water head pressure |
-
2015
- 2015-05-15 CN CN201520319566.0U patent/CN204594855U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819924A (en) * | 2015-05-15 | 2015-08-05 | 浙江大学城市学院 | Instrument and test method for simulating underwater tunnel concrete water pressure penetration test |
| CN108152121A (en) * | 2018-01-17 | 2018-06-12 | 中国科学院武汉岩土力学研究所 | A kind of concrete accelerated erosion device for applying flowing water and high water head pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20170515 |