CN204645108U - A kind of foundation checkout gear - Google Patents
A kind of foundation checkout gear Download PDFInfo
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- CN204645108U CN204645108U CN201520278954.9U CN201520278954U CN204645108U CN 204645108 U CN204645108 U CN 204645108U CN 201520278954 U CN201520278954 U CN 201520278954U CN 204645108 U CN204645108 U CN 204645108U
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- foundation
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- groove
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- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model provides a kind of foundation checkout gear, described foundation comprises and is placed in foundation soil body in container and cast-in-place in the basic model of described foundation soil body, and described checkout gear comprises the rainfall system of being located at described container top and bottom respectively and liquor collecting system, the tensiometer that is connected with described basic model by connecting rod and the displacement transducer be respectively equipped with on described basic model and described foundation soil body.The relation that the extraction-resistant behavior change of migration situation and basic model that the technical scheme that the utility model provides can study water body ion in foundation soil body under condition of raining changes with foundation soil body binding strength.
Description
Technical field
The utility model relates to a kind of checkout gear, under specifically relating to a kind of simulated rainfall conditions, for the device of the resistance to plucking load-carrying properties and foundation soil body penetrating fluid chemical constituent that detect foundation.
Background technology
Transmission line of electricity foundation is different from common geotechnical engineering, the features such as it has that distribution is wide, span large, topography and geomorphology and complex geologic conditions, the change of the load-carrying properties of foundation soil body under different underground water Environmental effect for the science type selecting of pole and tower foundation and design optimization significant.The difficult ground such as increasing work transmission line approach loess, admaic earth, salt pool soil, expansive soil in recent years.Research shows, the binding strength of above-mentioned all kinds of special soils is main relevant with content with the cement type in the soil body, and the corrosion of water body to cement causes Special soil foundation and structure that the main cause destroyed occurs.How to characterize the relation between transmission line tower foundation bearer properties three in the corrosion of soil body cement, soil body binding strength and the soil body, to design optimization, the critical significance of having prevented and reduced natural disasters of research difficult ground transmission line of electricity ground foundation engineering.
In recent years, Chinese scholars obtains a large amount of achievement by " earth pillar leaching " test, this test is mainly used in analyzing the change of the permeability of the soil body under rainwater leaching, compressibilty, soil strength, and research is still lacked for the extraction-resistant behavior change of (comprising leaching, immersion, water erosion) basic model caused by the change of foundation soil binding strength under corroding at water body, to analyze this scientific phenomena relevant with lacking at present the checkout equipment of being correlated with for this.
Utility model content
In order to solve the problems referred to above existing in prior art, the utility model provides a kind of foundation checkout gear.
The technical scheme that the utility model provides is: a kind of foundation checkout gear, described foundation comprises and is placed in foundation soil body in container and cast-in-place in the basic model of described foundation soil body, and its improvements are: described checkout gear comprises the rainfall system of being located at described container top and bottom respectively and liquor collecting system, the tensiometer that is connected with described basic model by connecting rod and the displacement transducer be located at respectively on described basic model and described foundation soil body.
Preferably, described rainfall system comprises the hollow covering described container top and crosses water top board, and one end is placed in described water top board excessively, the conduit that the other end is connected with water feed apparatus after passing the described through hole crossed on water top board sidewall.
Further, described through hole is provided with the elastic seal ring that aperture is slightly less than the diameter of described conduit, is arranged on described water top board excessively to make described conduit interference; Described water feed apparatus is the suction pump of adjustable flow velocity or the supply equipment of band difference in height; Described water top board bottom even of crossing is covered with through hole.
Preferably, described liquor collecting system comprises the porous disc for carrying described foundation soil body below described foundation soil body, spread on the filter membrane between described foundation soil body and described porous disc, described container inner wall is close in the one end be located at below described porous disc, after the other end is downward-sloping by the strip gab propelling container of described container side wall the outer and deflector be connected with liquid collecting container.
Further, described porous disc is the poly (methyl methacrylate) plate being evenly covered with through hole, and it is fixed in described container by vertically disposed baffle plate on the inwall of described container both sides.
Preferably, described connecting rod is that one end is cast-in-place in described basic model, links up with the reinforcing bar be connected after the other end passes water top board by end through hole with tensiometer bottom.
Preferably, described internal tank bilateral symmetry is provided with buried bottom in foundation soil body is the draw-in groove of taper.
Further, the top of described draw-in groove is provided with the screw perpendicular to described draw-in groove axis, and described chamber wall is provided with the through hole adapted with described screw, and described draw-in groove is fixed on described chamber wall by described bolt.
Further, described draw-in groove top is provided with the screw being parallel to described draw-in groove axis, crosses water top board and is provided with the through hole adapted with described draw-in groove top screw, and described water top board of crossing is fixed by bolt and described draw-in groove.
Further, the bottom cone end of described draw-in groove enters the soil body degree of depth and is not more than 10cm.
Compared with immediate technical scheme, the utility model has following marked improvement:
1) the utility model arranges rainfall system at container top, foundation soil body and basic model arrange displacement transducer, and be arranged through the tensiometer of connecting rod connection basic model, can carry out basic model under simulated rainfall conditions on pull out static loading test, obtain the uplift load-displacement relation curve of basic model, thus the extraction-resistant behavior of research foundation soil body under condition of raining.
2) the utility model arranges liquor collecting system at container bottom, can collect the penetrating fluid of foundation soil body under condition of raining, thus detects the chemical constituent of penetrating fluid, the degradation mechanism of foundation soil body resistance to plucking supporting capacity under research condition of raining.
3) the utility model is by container splendid attire foundation soil body, easy and simple to handle during test, can place different types of soil sample, thus study the resistance to plucking load-carrying properties of dissimilar foundation soil body under condition of raining.
4) the utility model is the draw-in groove of taper by arranging buried bottom in foundation soil body in container inner wall bilateral symmetry, this draw-in groove is fixed with container and mistake water top board respectively by bolt, can be used for fixing foundation soil body, ensure to move on the sidewall of foundation soil body is not along with base apparatus moves, improve the functional reliability of checkout gear.
5) deflector that provides of the utility model and horizontal direction inclination at an angle, one end is near container chamber sidewall, propelling container chamber, one end is connected with liquid collecting container, the moisture that internal tank foundation soil body can be run off under condition of raining and salinity import in the outer liquid collecting container of container smoothly, make detection reliably easy and simple to handle.
Accompanying drawing explanation
The overall structure figure of foundation checkout gear under the condition of raining that Fig. 1 provides for the utility model;
Fig. 2 was the structural representation of water top board;
Fig. 3 is the flow guide system figure in Fig. 1.
1-tensiometer; 2-connecting rod; 3-basic model; 4-foundation soil body; 5-displacement transducer; 6-cross water top board (hollow); 7-water pipe (connecing water plug); 8-container chamber; 9-cone end draw-in groove; 10-filter membrane; 11-porous disc; 12-deflector; 13-liquid collector.
Detailed description of the invention
In order to understand the utility model better, below in conjunction with Figure of description and example, content of the present utility model is described further.
The structure chart of the checkout gear that the utility model provides as shown in Figure 1.This checkout gear is made up of basic test system, rainfall system, liquor collecting system 3 part.
1) basic test system is made up of container, tensiometer, top reinforcing bar with holes, basic model, foundation soil body, draw-in groove, displacement transducer.Container chamber loses transparent plexiglass plate material by high-strength corrosion-resistant and makes, can resistance to acids and bases, for placing soil sample; Tensiometer shows the value of thrust acted on by the numerical value on dial plate, and is connected with basic model by reinforcing bar with holes; Basic model is cast-in-place in foundation soil body, and the displacement transducer of basic model and soil body top layout some is for testing the uplift displacement of the soil body; Draw-in groove cone end enters soil body certain depth (being generally not more than 10cm), and its effect is fixing foundation soil body, ensures to move on the sidewall of foundation soil body is not along with basic model moves.
2) rainfall system is by with holes the crossing water top board, cross conduit in water top board and external water feed apparatus forms of hollow.Crossing water top plate thickness is 10cm, bottom even is covered with aperture, structure is hollow, sidewall has through hole, through hole is provided with the elastic seal ring that aperture is slightly less than conduit diameter, so that conduit with cross the interference of water top board and install, on the one hand can by conduit with cross water top board and reliably fix, water when another aspect can prevent water injection through pipe in top board is leaked outside by lateral through aperture; Water feed apparatus is made up of the suction pump of adjustable flow velocity or the water supply installation of band certain height difference, crosses water top board and is connected with water feed apparatus by conduit, realize the leaching to foundation soil body and basic model.
3) liquor collecting system is made up of filter membrane, porous disc, deflector and liquid collecting container.The order that wherein filter membrane, porous disc, foundation soil body are stacked from top to bottom is followed successively by: foundation soil body, filter membrane, porous disc.Filter membrane can the effective bulky grain foreign material of filtering foundation soil body under condition of raining in penetrating fluid, thus retain moisture and mineral salt, make follow-up penetrating fluid chemical constituent analytic process reliably easy; Porous disc is the poly (methyl methacrylate) plate being covered with aperture, and the baffle plate frame stretched out by container chamber sidewall is in container chamber; Deflector is made up of corrosion resistant poly (methyl methacrylate) plate material, inclination at an angle with horizontal direction, and one end is near container chamber sidewall, and one section of propelling container chamber, is connected with liquid collecting container.
Use the example approach of this foundation checkout gear as follows:
First according to package system shown in Fig. 1, according to sequentially deflector, porous disc and filter membrane being arranged in container from down to up, the foundation soil body of (undisturbed soil or non-undisturbed soil) to be studied is placed on filter membrane, ensure smooth vertical and horizontal, again draw-in groove is inserted in the soil body, ensure that the cone end of draw-in groove enters more than foundation soil body 10cm.According to test needs, in foundation soil body, excavate the foundation ditch of the basic model size of certain size, then put in foundation ditch and pull out screw rod, build C20 or C30 concrete, and maintenance 28 days.Maintenance is after 28 days, can carry out basic model on pull out dead-load detection.
Before detection starts, be connected by conduit with water feed apparatus, water feed apparatus adopts the suction pump of adjustable flow velocity or the precipitation facility of band certain height difference, installs the displacement transducer of some at basic model top and foundation soil body upper surface simultaneously.
Open the switch of water feed apparatus, apply uplift load according to the loading speed of 0.1N/min to basic model by tensiometer simultaneously, until foundation soil body generation bulge fracture (displacement transducer reading is undergone mutation), test can be stopped.
After off-test, according to the final reading of tensiometer and displacement transducer, the CAPO test of basic model under simulated rainfall conditions can be obtained.Complete chemical analysis test is carried out in the sepage of collecting in liquid collector, the K in test water body, Na simultaneously, Ca, Mg, Fe, in order to the type of cement corrosion in analytical soil sample, and the relation that the change of the extraction-resistant behavior of Research foundation model changes with foundation soil body binding strength.
In addition, the foundation soil body settlement by soaking can also carried out under condition of raining by this checkout gear is detected and the salt marsh water translocation of foundation soil body detects; Under foundation soil body settlement by soaking detects and mainly studies different amount of precipitation condition by the displacement transducer reading under condition of raining, the saturated yielding displacement of different foundation soil body.
Under the salt marsh water translocation of foundation soil body detects and mainly studies different amount of precipitation condition by the chemical constituent of the penetrating fluid of foundation soil body under condition of raining, the water loss quality of different foundation soil body and the loss quality of mineral salt.
These are only embodiment of the present utility model, be not limited to the utility model, all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all applying within the right of the present utility model awaited the reply.
Claims (10)
1. a foundation checkout gear, described foundation comprises and is placed in foundation soil body in container and cast-in-place in the basic model of described foundation soil body, it is characterized in that: described checkout gear comprises the rainfall system of being located at described container top and bottom respectively and liquor collecting system, the tensiometer that is connected with described basic model by connecting rod and the displacement transducer be located at respectively on described basic model and described foundation soil body.
2. a kind of foundation checkout gear as claimed in claim 1, is characterized in that:
Described rainfall system comprises the hollow covering described container top and crosses water top board, and one end is placed in described water top board excessively, the conduit that the other end is connected with water feed apparatus after passing the described through hole crossed on water top board sidewall.
3. a kind of foundation checkout gear as claimed in claim 2, is characterized in that:
Described through hole is provided with the elastic seal ring that aperture is slightly less than the diameter of described conduit, is arranged on described water top board excessively to make described conduit interference; Described water feed apparatus is the suction pump of adjustable flow velocity or the supply equipment of band difference in height; Described water top board bottom even of crossing is covered with through hole.
4. a kind of foundation checkout gear as claimed in claim 1, is characterized in that:
Described liquor collecting system comprises the porous disc for carrying described foundation soil body below described foundation soil body, spread on the filter membrane between described foundation soil body and described porous disc, described container inner wall is close in the one end be located at below described porous disc, after the other end is downward-sloping by the strip gab propelling container of described container side wall the outer and deflector be connected with liquid collecting container.
5. a kind of foundation checkout gear as claimed in claim 4, is characterized in that:
Described porous disc is the poly (methyl methacrylate) plate being evenly covered with through hole, and it is fixed in described container by vertically disposed baffle plate on the inwall of described container both sides.
6. a kind of foundation checkout gear as claimed in claim 1, is characterized in that:
Described connecting rod is that one end is cast-in-place in described basic model, links up with the reinforcing bar be connected after the other end passes water top board by end through hole with tensiometer bottom.
7. a kind of foundation checkout gear as claimed in claim 1, is characterized in that:
It is the draw-in groove of taper that described internal tank bilateral symmetry is provided with buried bottom in foundation soil body.
8. a kind of foundation checkout gear as claimed in claim 7, is characterized in that:
The top of described draw-in groove is provided with the screw perpendicular to described draw-in groove axis, and described chamber wall is provided with the through hole adapted with described screw, and described draw-in groove is fixed on described chamber wall by described bolt.
9. a kind of foundation checkout gear as claimed in claim 8, is characterized in that:
Described draw-in groove top is provided with the screw being parallel to described draw-in groove axis, crosses water top board and is provided with the through hole adapted with described draw-in groove top screw, and described water top board of crossing is fixed by bolt and described draw-in groove.
10. a kind of foundation checkout gear as claimed in claim 7, is characterized in that:
The bottom cone end of described draw-in groove enters the soil body degree of depth and is not more than 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520278954.9U CN204645108U (en) | 2015-04-30 | 2015-04-30 | A kind of foundation checkout gear |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520278954.9U CN204645108U (en) | 2015-04-30 | 2015-04-30 | A kind of foundation checkout gear |
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| CN204645108U true CN204645108U (en) | 2015-09-16 |
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| CN201520278954.9U Active CN204645108U (en) | 2015-04-30 | 2015-04-30 | A kind of foundation checkout gear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848112A (en) * | 2021-08-23 | 2021-12-28 | 武汉工大土木工程检测有限公司 | Foundation uplift resistance bearing performance detection method |
-
2015
- 2015-04-30 CN CN201520278954.9U patent/CN204645108U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848112A (en) * | 2021-08-23 | 2021-12-28 | 武汉工大土木工程检测有限公司 | Foundation uplift resistance bearing performance detection method |
| CN113848112B (en) * | 2021-08-23 | 2024-04-05 | 武汉工大土木工程检测有限公司 | Method for detecting anti-pulling bearing performance of foundation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |