CN204000821U - A kind of flatly moving type soil pressure is surveyed model test device - Google Patents
A kind of flatly moving type soil pressure is surveyed model test device Download PDFInfo
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- CN204000821U CN204000821U CN201420430096.0U CN201420430096U CN204000821U CN 204000821 U CN204000821 U CN 204000821U CN 201420430096 U CN201420430096 U CN 201420430096U CN 204000821 U CN204000821 U CN 204000821U
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Abstract
The utility model relates to field of civil engineering, relates in particular to a kind of flatly moving type soil pressure and surveys model test device.This survey model test device comprises water jacket, inside groove, upper charging assembly, lower charging assembly, soil pressure measuring cell and displacement measurement element, laterally load-bearing body is arranged in the soil body, a plurality of soil pressure measuring cells are embedded in the horizontal load-bearing body side surface soil body, displacement measurement element is arranged on horizontal load-bearing body, upper charging assembly and lower charging assembly are horizontally disposed with and are positioned at the homonymy of horizontal load-bearing body, upper charging assembly one end is against on the sidewall of water jacket, the other end is connected with the top of horizontal load-bearing body, lower charging assembly one end is against on the sidewall of water jacket, the other end is connected with the bottom of horizontal load-bearing body, upper charging assembly and lower charging assembly load action simultaneously, mode with translation promotes horizontal load-bearing body transverse shifting, thereby by soil pressure measuring cell and displacement measurement element, can obtain the soil pressure distribution regular of its side under horizontal load-bearing body generation translation displacement model.
Description
Technical field
The utility model relates to technical field of civil engineering, relates in particular to a kind of flatly moving type soil pressure and surveys model test device.
Background technology
At present, in the engineerings such as deep-foundation pit engineering, port works, bridge engineering, highrise building and side slope, load-bearing body (for example load-bearing stake and retaining wall) application is comparatively extensive, and it mainly bears the effect of lateral force and moment or the effect of vertical load.
Take load-bearing stake as example, by its loading characteristic, can be divided into vertical load-bearing stake (as pile foundation) and laterally load-bearing stake (as antislide pile, fender post).In the force analysis process of laterally load-bearing stake, maximum difficult point is how accurately to determine the lateral earth pressure that acts on stake.On the one hand, stake lateral earth pressure is relevant to distortion size and the pattern of the soil body and stake, therefore, stake and the soil body need to be considered as a whole; On the other hand, weathering, earthquake, rainfall and pile body construction etc. can change the physical parameters such as soil body density, void ratio, water content, cause that geo-mechanics parameters (c, φ etc.) changes, and then change size and the regularity of distribution of stake lateral earth pressure.
At present, in horizontal load-bearing body (as antislide pile, retaining wall) conventional design, soil pressure, get active earth pressure or the passive earth pressure under earth pressue at rest or ultimate limit state.Yet the soil pressure in Practical Project is interactional result between soil and horizontal load-bearing body, and laterally the different displacement patterns of load-bearing body, the characteristics of deformation and strength of the soil body all exert an influence to the size of soil pressure and the regularity of distribution.Many hypothesis that traditional design theory adopts are all avoided load-bearing body and soil body INTERACTION PROBLEMS to some extent, therefore horizontal load-bearing side Calculating method of earth pressure is theoretically unsound, there is many hypothesis and uncertainty in design parameters, laterally the designing and calculating of load-bearing body relies on designer's experience mostly, design theory lags behind, the situation that engineering lost efficacy also happens occasionally, (for example caused huge property loss, the antislide pile cost in 3m * 2m cross section is every meter of unit up to ten thousand substantially, the upper three speedway 6# landslide anti-slide pile stabilization works expenses in Zhejiang Province surpass 40,000,000), and engineering lost efficacy and related to people's livelihood safety, count for much.Therefore, the experimental study of actively developing horizontal load-bearing side soil pressure has stronger engineering background, and has very important theory and using value.
In view of the lower horizontal load-bearing body of the disturbance factor such as human factor (pile body construction), natural cause (rainfall, earthquake etc.) and pile body (body of wall) displacement impact and the interactional complexity of the soil body, set up the test that a rational lateral earth pressure computation model must be based on a large amount of.
Yet, field trial high cost, model testing becomes the effective means of research horizontal load-bearing body (antislide pile, retaining wall etc.) side soil pressure distribution character.But the experimental rig of at present relevant this aspect is relatively short of.Therefore, develop a kind of horizontal load-bearing side soil pressure measurement model experimental rig, to meet the needs of horizontal load-bearing side soil pressure distribution regular research, become engineering circles problem in the urgent need to address, in view of the movement of transversal translation type often occurs horizontal load-bearing body in Practical Project, the research of therefore carrying out horizontal load-bearing side soil pressure distribution regular under this displacement model seems necessary.
Therefore,, for above deficiency, the utility model provides a kind of flatly moving type soil pressure to survey model test device.
Utility model content
(1) technical problem that will solve
The purpose of this utility model is to provide a kind of flatly moving type soil pressure and surveys model test device to meet the research needs of soil pressure distribution regular under horizontal load-bearing body generation translation displacement model.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of flatly moving type soil pressure to survey model test device, it comprises water jacket, inside groove, upper charging assembly, lower charging assembly, soil pressure measuring cell and displacement measurement element, in inside groove, be provided with the soil body, laterally load-bearing body is arranged in the soil body, a plurality of soil pressure measuring cells are embedded in the soil body of horizontal load-bearing body side surface successively, displacement measurement element is arranged on horizontal load-bearing body, upper charging assembly and lower charging assembly are horizontally disposed with and are positioned at the homonymy of horizontal load-bearing body, one end of upper charging assembly is against on the sidewall of water jacket, the other end is connected with the top of horizontal load-bearing body, one end of lower charging assembly is against on the sidewall of water jacket, the other end is connected with the bottom of horizontal load-bearing body.
Wherein, described upper charging assembly comprises the first jack and the first dowel bar, the bottom of the first jack is arranged on water jacket sidewall, and the top of the first jack is connected with one end of the first dowel bar, and the other end of the first dowel bar is connected with the top of horizontal load-bearing body.
Wherein, described lower charging assembly comprises the second jack and the second dowel bar, the bottom of the second jack is arranged on water jacket sidewall, and the top of the second jack is connected with one end of the second dowel bar, and the other end of the second dowel bar is connected with the bottom of horizontal load-bearing body.
Wherein, also comprise being vertically fixed on water jacket sidewall and regulate guide-track groove, on the cell wall of adjusting guide-track groove, edge is vertically provided with a plurality of installing holes, the bottom of the first jack is fixed on by bolt assembly on the installing hole that regulates guide-track groove top, and the bottom of the second jack is fixed on the installing hole that regulates guide-track groove bottom by bolt assembly.
Wherein, described soil pressure measuring cell is earth pressure gauge.
Wherein, described displacement measurement element is dial gage.
Wherein, described horizontal load-bearing body is single horizontal load-bearing stake.
Wherein, also comprise the first guide rod, described horizontal load-bearing body is a plurality of horizontal load-bearing stakes, a plurality of horizontal load-bearing stakes are arranged side by side in the soil body, a plurality of described horizontal load-bearing stakes top connects by the first guide rod, and the two ends of the first guide rod put charging assembly by parallel two respectively and are connected with the inwall of water jacket.
Wherein, also comprise the second guide rod, a plurality of horizontal load-bearing stakes bottom connects by the second guide rod, and the two ends of the second guide rod are connected with the inwall of water jacket by the lower charging assembly of two parallel covers respectively.
Wherein, described horizontal load-bearing body is retaining wall.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: flatly moving type soil pressure of the present utility model is surveyed in model test device, horizontal load-bearing body is arranged in to the soil body, a plurality of soil pressure measuring cells are embedded in the soil body of horizontal load-bearing body side surface successively, displacement measurement element is arranged on horizontal load-bearing body, upper charging assembly and lower charging assembly are horizontally disposed with and are positioned at the homonymy of horizontal load-bearing body, one end of upper charging assembly is against on the sidewall of water jacket, the other end is connected with the top of horizontal load-bearing body, one end of lower charging assembly is against on the sidewall of water jacket, the other end is connected with the bottom of horizontal load-bearing body, upper charging assembly and lower charging assembly load action simultaneously, mode with translation promotes horizontal load-bearing body transverse shifting, thereby by soil pressure measuring cell and displacement measurement element, can obtain the soil pressure distribution regular of its side under load-bearing body generation translation displacement model.
Accompanying drawing explanation
Fig. 1 is the structural representation of facing that the utility model embodiment flatly moving type soil pressure is surveyed model test device;
Fig. 2 is the plan structure schematic diagram that the utility model embodiment flatly moving type soil pressure is surveyed model test device;
Fig. 3 is the structural representation that the utility model embodiment flatly moving type soil pressure is surveyed horizontal load-bearing stake in model test device;
Fig. 4 is the structural representation that the utility model embodiment flatly moving type soil pressure is surveyed the first dowel bar in model test device;
Fig. 5 is the annexation schematic diagram that the utility model embodiment flatly moving type soil pressure is surveyed the first dowel bar and the first guide rod in model test device;
Fig. 6 is that the horizontal load-bearing body of the utility model embodiment bottom driving type soil pressure is surveyed the top view that regulates guide-track groove in die device;
Fig. 7 is that the horizontal load-bearing body of the utility model embodiment bottom driving type soil pressure is surveyed the lateral view that regulates guide-track groove in die device.
In figure, 1: water jacket; 2: inside groove; 3: displacement measurement element; 4: laterally load-bearing stake; 5: the first guide rods; 6: soil pressure measuring cell; 7: the first dowel bars; 8: the first jack; 9: the second dowel bars; 10: the soil body; 11: bolt assembly; 12: the second guide rods; 13: the second jack; 14: installing hole; 15: regulate guide-track groove; 701: contiguous block.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
As depicted in figs. 1 and 2, the flatly moving type soil pressure that the utility model provides is surveyed model test device and is comprised water jacket 1, inside groove 2, upper charging assembly, lower charging assembly, soil pressure measuring cell 6 and displacement measurement element 3, then water jacket 1 can form with concreting at ground excavation, and then the interior inside groove 2 that arranges of water jacket 1, one side of inside groove 2 can be opened wide, in inside groove 2, be provided with the soil body 10, laterally load-bearing body is arranged in the soil body 10, this soil body 10 can be stepped, also can there is certain slope, a plurality of soil pressure measuring cells 6 are embedded in the soil body 10 of horizontal load-bearing body side surface successively, displacement measurement element 3 is arranged on horizontal load-bearing body, upper charging assembly and lower charging assembly are horizontally disposed with and are positioned at the homonymy of horizontal load-bearing body, one end of upper charging assembly is against on the sidewall of water jacket 1, the other end is connected with the top of horizontal load-bearing body, one end of lower charging assembly is against on the sidewall of water jacket 1, the other end is connected with the bottom of horizontal load-bearing body.Wherein, above-mentioned horizontal load-bearing body is horizontal load-bearing stake 4, and it can be cylindric or is prism-shaped; Model water jacket 1 generally all forms with concreting with inside groove 2, and concrete class is preferably C20, and water jacket 1 is long is 4000mm, and wide is 1200mm, height is 1200mm, the long 3000mm of model inside groove 2, wide 800mm, high 1200mm, certainly, water jacket 1 is also not limited to above-mentioned concrete numerical value with the size of inside groove 2.
Wherein, laterally the pile shaft material of load-bearing stake 4 can adopt the concrete of C25～C50, in stake, reinforcing bar can adopt HRB335～RRB400 reinforcing bar, the reinforcement ratio of pile body cross section and reinforcing bar can design according to the needs of Practical Project, and long and the pile body cross section length of side of stake or diameter meet the ratio of model testing to be dwindled.
In technique scheme, upper charging assembly and lower charging assembly are horizontally disposed with and are positioned at the homonymy of horizontal load-bearing body, by upper charging assembly and lower charging assembly, load action simultaneously, laterally the top of load-bearing stake 4 and bottom are simultaneously stressed, horizontal load-bearing stake 4 transverse shiftings, the soil pressure recording of a plurality of soil pressure measuring cells 6 also changes, thereby can record the soil pressure changing value of horizontal load-bearing stake 4 sides, and can record the shift value of horizontal load-bearing stake 4 when there is transversal translation displacement by the displacement measurement element 3 being arranged in horizontal load-bearing stake 4, in conjunction with measured soil pressure changing value, can draw the soil pressure distribution regular of horizontal load-bearing stake 4 sides.
Particularly, upper charging assembly comprises the first jack 8 and the first dowel bar 7, the bottom of the first jack 8 is fixed on water jacket 1 sidewall, the top of the first jack 8 is connected with one end of the first dowel bar 7, the other end of the first dowel bar 7 is connected with the top of horizontal load-bearing body, wherein, in order to make top and first dowel bar 7 of the first jack 8 carry out more stably the transmission of loading force, one end of the first dowel bar 7 is also provided with contiguous block 701, to facilitate with the first jack 8, docks; Lower charging assembly comprises the second jack 13 and the second dowel bar 9, the bottom of the second jack 13 is fixed on water jacket 1 sidewall, the top of the second jack 13 is connected with one end of the second dowel bar 9, the other end of the second dowel bar 9 is connected with the bottom of horizontal load-bearing body, described the first jack 8 and the second jack 13 adopt FCY-20 elongated hydraulic jack, wherein in order to make top and second dowel bar 9 of the second jack 13 carry out more stably the transmission of loading force, one end of the second dowel bar 9 is also provided with contiguous block 701, to facilitate with the second jack 13, docks.
In order to make the height of the first jack 8 and the second jack 13 adjustable, to adapt to the experimental measurement of the load-bearing stake 4 of differing heights, the present invention also comprises being vertically fixed on and on water jacket sidewall, regulates guide-track groove 15, on the cell wall of adjusting guide-track groove 15, edge is vertically provided with a plurality of installing holes, the bottom of the first jack is fixed on by bolt assembly on the installing hole that regulates guide-track groove 15 tops, and the bottom of the second jack is fixed on the installing hole that regulates guide-track groove 15 bottoms by bolt assembly.Like this, by adjusting bolt assembly, the first jack 8 can be arranged on the installing hole of the differing heights that regulates guide-track groove 15 tops, also the second jack 13 can be arranged on the installing hole of the differing heights that regulates guide-track groove 15 bottoms, thereby make the height of the first jack 8 and the second jack 13 adjustable, and then soil pressure of the present invention is surveyed in the experimental measurement of load-bearing stake 4 that model test device can be applied to differing heights.
Usually, soil pressure measuring cell 6 is earth pressure gauge; Displacement measurement element 3 is dial gage.Certainly, soil pressure measuring cell 6 is not limited to earth pressure gauge, and displacement measurement element 3 is also not limited to dial gage, also can adopt the soil pressure measuring cell 6 and displacement measurement element 3 of other types.Wherein, the both sides of horizontal load-bearing stake 4 are embedding JTM-V2000 type type vibration wire earth pressure gauge all, respectively along being vertically arranged in horizontal load-bearing stake 4 pile body both sides, is used for respectively measuring active earth pressure and the passive earth pressure of stake side.
In the utility model, laterally load-bearing body can be single horizontal load-bearing stake 4, also can be a plurality of horizontal load-bearing stakes 4 that are set up in parallel.As shown in Fig. 2, Fig. 3 and Fig. 5 when adopting a plurality of horizontal load-bearing stake 4 being set up in parallel, a plurality of horizontal load-bearing stake 4 tops connect by the first guide rod 5, the two ends of the first guide rod 5 put charging assembly by parallel two respectively and are connected with the inwall of water jacket 1, are also that the two ends of the first guide rod 5 are connected with the first jack 8 being fixed on water jacket 1 sidewall by first dowel bar 7 respectively; A plurality of horizontal load-bearing stake 4 bottoms connect by the second guide rod 12, the two ends of the second guide rod 12 are connected with the inwall of water jacket 1 by the lower charging assembly of two parallel covers respectively, also the two ends of the second guide rod 12 are connected with the second jack 13 being fixed on water jacket 1 sidewall by second dowel bar 9 respectively, the top of so horizontal load-bearing stake 4 has two the first dowel bars 7 to drive, laterally the bottom of load-bearing stake 4 is driven by two the second dowel bars 9, laterally load-bearing stake 4 translations are stressed more even, and the transmission of dowel bar is more accurately reliable.In addition, laterally the spacing of load-bearing stake 4 is generally 3d～5d or 3b～5b (wherein, d is the diameter of circle stake, b is the length of side of square pile), laterally default installing hole 14 is arranged at load-bearing stake 4 tops and bottom, for adopting bolt assembly 11 to be connected through between the first guide rod 5 or the second guide rod 12, the first guide rods 5 and the first dowel bar 7 or the second guide rod 12 and the second dowel bar 9, certainly also can adopt other connected modes.
In the utility model, described horizontal load-bearing body is not only confined to horizontal load-bearing stake 4, and it also can be retaining wall.When horizontal load-bearing body is retaining wall, retaining wall is embedded in the soil body 10, the top of retaining wall is horizontally disposed with the above-mentioned upper charging assembly of two covers, the bottom level of retaining wall arranges the above-mentioned lower charging assembly of two covers, upper charging assembly and lower charging assembly load action simultaneously, the top of retaining wall and bottom are simultaneously stressed, horizontal load-bearing stake 4 transverse shiftings, and then can measure the soil pressure distribution regular of corresponding retaining wall both sides.
In sum, flatly moving type soil pressure of the present utility model is surveyed in model test device, by horizontal load-bearing body being embedded in the soil body 10 of inside groove 2, top and bottom at horizontal load-bearing body arrange respectively charging assembly and lower charging assembly, one end of upper charging assembly and lower charging assembly is all against on the sidewall of water jacket 1, upper charging assembly and lower charging assembly load action simultaneously, mode with translation promotes horizontal load-bearing body transverse shifting, then by the dial gage that is embedded in the earth pressure gauge of horizontal load-bearing body one side and be arranged on horizontal load-bearing body, obtain the soil pressure distribution regular of horizontal load-bearing stake 4 sides, by a plurality of horizontal load-bearing stake 4 being set up in parallel, top and bottom in laterally load-bearing stake 4 arrange respectively the first guide rod 5 and the second guide rod 12, the first guide rod 5 two ends are connected with the first jack 8 being fixed on water jacket 1 sidewall by the first dowel bar 7 respectively, so horizontal load-bearing stake 4 tops are driven by two the first dowel bars 7, can make the top of a plurality of horizontal load-bearing stakes 4 that same displacement occurs, in like manner, the second guide rod 12 two ends can make the bottom of a plurality of horizontal load-bearing stakes 4 that same displacement occurs by the driving of the second dowel bar 9, improve the degree of accuracy of experimental measurement.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (10)
1. a flatly moving type soil pressure is surveyed model test device, it is characterized in that: comprise water jacket, inside groove, upper charging assembly, lower charging assembly, soil pressure measuring cell and displacement measurement element, in inside groove, be provided with the soil body, laterally load-bearing body is arranged in the soil body, a plurality of soil pressure measuring cells are embedded in the soil body of horizontal load-bearing body side surface successively, displacement measurement element is arranged on horizontal load-bearing body, upper charging assembly and lower charging assembly are horizontally disposed with and are positioned at the homonymy of horizontal load-bearing body, one end of upper charging assembly is against on the sidewall of water jacket, the other end is connected with the top of horizontal load-bearing body, one end of lower charging assembly is against on the sidewall of water jacket, the other end is connected with the bottom of horizontal load-bearing body.
2. flatly moving type soil pressure according to claim 1 is surveyed model test device, it is characterized in that: described upper charging assembly comprises the first jack and the first dowel bar, the bottom of the first jack is arranged on water jacket sidewall, the top of the first jack is connected with one end of the first dowel bar, and the other end of the first dowel bar is connected with the top of horizontal load-bearing body.
3. flatly moving type soil pressure according to claim 2 is surveyed model test device, it is characterized in that: described lower charging assembly comprises the second jack and the second dowel bar, the bottom of the second jack is arranged on water jacket sidewall, the top of the second jack is connected with one end of the second dowel bar, and the other end of the second dowel bar is connected with the bottom of horizontal load-bearing body.
4. flatly moving type soil pressure according to claim 3 is surveyed model test device, it is characterized in that: also comprise being vertically fixed on water jacket sidewall regulating guide-track groove, on the cell wall of adjusting guide-track groove, edge is vertically provided with a plurality of installing holes, the bottom of the first jack is fixed on by bolt assembly on the installing hole that regulates guide-track groove top, and the bottom of the second jack is fixed on the installing hole that regulates guide-track groove bottom by bolt assembly.
5. flatly moving type soil pressure according to claim 1 is surveyed model test device, it is characterized in that: described soil pressure measuring cell is earth pressure gauge.
6. flatly moving type soil pressure according to claim 1 is surveyed model test device, it is characterized in that: described displacement measurement element is dial gage.
7. flatly moving type soil pressure according to claim 1 is surveyed model test device, it is characterized in that: described horizontal load-bearing body is single horizontal load-bearing stake.
8. flatly moving type soil pressure according to claim 1 is surveyed model test device, it is characterized in that: also comprise the first guide rod, described horizontal load-bearing body is a plurality of horizontal load-bearing stakes, a plurality of horizontal load-bearing stakes are arranged side by side in the soil body, a plurality of described horizontal load-bearing stakes top connects by the first guide rod, and the two ends of the first guide rod put charging assembly by parallel two respectively and are connected with the inwall of water jacket.
9. flatly moving type soil pressure according to claim 8 is surveyed model test device, it is characterized in that: also comprise the second guide rod, a plurality of horizontal load-bearing stakes bottom connects by the second guide rod, and the two ends of the second guide rod are connected with the inwall of water jacket by the lower charging assembly of two parallel covers respectively.
10. flatly moving type soil pressure according to claim 1 is surveyed model test device, it is characterized in that: described horizontal load-bearing body is retaining wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430096.0U CN204000821U (en) | 2014-07-31 | 2014-07-31 | A kind of flatly moving type soil pressure is surveyed model test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430096.0U CN204000821U (en) | 2014-07-31 | 2014-07-31 | A kind of flatly moving type soil pressure is surveyed model test device |
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| CN204000821U true CN204000821U (en) | 2014-12-10 |
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| CN201420430096.0U Withdrawn - After Issue CN204000821U (en) | 2014-07-31 | 2014-07-31 | A kind of flatly moving type soil pressure is surveyed model test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153341A (en) * | 2014-07-31 | 2014-11-19 | 宁波市市政设施景观建设有限公司 | Translational soil pressure measuring-mode testing device |
-
2014
- 2014-07-31 CN CN201420430096.0U patent/CN204000821U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153341A (en) * | 2014-07-31 | 2014-11-19 | 宁波市市政设施景观建设有限公司 | Translational soil pressure measuring-mode testing device |
| CN104153341B (en) * | 2014-07-31 | 2016-08-24 | 宁波市市政设施景观建设有限公司 | A kind of flatly moving type soil pressure surveys model test device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20160824 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |