CN104181044B - A kind of horizontal load-bearing body soil pressure measurement test method - Google Patents
A kind of horizontal load-bearing body soil pressure measurement test method Download PDFInfo
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- CN104181044B CN104181044B CN201410374516.2A CN201410374516A CN104181044B CN 104181044 B CN104181044 B CN 104181044B CN 201410374516 A CN201410374516 A CN 201410374516A CN 104181044 B CN104181044 B CN 104181044B
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Abstract
The present invention relates to technical field of civil engineering, more particularly to a kind of horizontal load-bearing body soil pressure measurement test method.The measurement test method comprises the following steps：Water jacket is built, an inside groove is set in water jacket；Prefabrication transverse load-bearing body, vertically it is placed in the top and bottom reserving installation hole of horizontal load-bearing body, and by manufactured horizontal load-bearing body in inside groove；Charging assembly is set in the side of horizontal load-bearing body, one end of charging assembly is connected with horizontal load-bearing body, the other end is against in the side wall of water jacket；Displacement measurement element is installed on horizontal load-bearing body, the soil body is filled in inside groove by test requirements document, and in the embedding multiple soil pressure measuring cells of horizontal load-bearing body side surface；Drive load component operation, charging assembly is set to promote horizontal load-bearing body movement；The horizontal load-bearing displacement body value measured by displacement measurement element and the horizontal load-bearing body side surface soil pressure force value measured by soil pressure measuring cell are recorded, so as to easily and accurately obtain horizontal load-bearing body side surface soil pressure distribution regular.
Description
Technical field
The present invention relates to technical field of civil engineering, more particularly to a kind of horizontal load-bearing body soil pressure measurement test method.
Background technology
At present, in the engineerings such as deep-foundation pit engineering, port engineering, science of bridge building, skyscraper and side slope, horizontal load-bearing body
(such as load-bearing stake and retaining wall) application is relatively broad, and it is primarily subjected to the work of the effect of cross force and torque or vertical load
With.
By taking load-bearing stake as an example, vertical load-bearing stake (such as pile foundation) can be divided into transverse SBS (as resisted by its loading characteristic
Sliding pile, fender post).During the force analysis of transverse SBS, maximum difficult point is how accurately to determine to act on stake
Soil lateral pressure.On the one hand, soil pressure against piles are related to the soil body and the deformation size and pattern of stake, therefore, it is necessary to by stake and
The soil body considers as overall；On the other hand, weathering, earthquake, rainfall and pile body construction etc. can change soil body density, hole
Than physical parameters such as, water content, cause geo-mechanics parameters (c,Deng) change, and then change the size of soil pressure against piles
And the regularity of distribution.
At present, taken in horizontal load-bearing body (such as friction pile, retaining wall) conventional design soil pressure earth pressure at rest or
Active earth pressure or passive earth pressure under limiting condition.But the soil pressure in Practical Project is native between horizontal load-bearing body
The result of interaction, the different wall movement modes of horizontal load-bearing body, the characteristics of deformation and strength of the soil body are all to the size of soil pressure
Had an impact with the regularity of distribution.Used by traditional design theory it is many hypothesis all avoid to some extent horizontal load-bearing body with
Soil body INTERACTION PROBLEMS so that horizontal load-bearing side Calculating method of earth pressure is theoretically unsound, and design parameter exists many
Assuming that failed with uncertain, the experience for designing calculating and relying on designer mostly of horizontal load-bearing body, design theory hysteresis, engineering
Situation also happen occasionally, cause huge property loss (for example, in substantially every meter of the friction pile cost in 3m × 2m sections
Wan Yuan, the upper three highways 6# landslide anti-slide piles reinforcing engineering expense in Zhejiang Province more than 4,000 ten thousand), and engineering failure be related to the people's livelihood
Safety, counts for much.Therefore, there is stronger engineer applied to carry on the back for the experimental study for actively developing horizontal load-bearing side soil pressure
Scape, and with very important theoretical and application value.
In view of human factor (pile body construction), natural cause (rainfall, earthquake etc.) and pile body (wall) displacement etc. disturbance because
Horizontal load-bearing body and the complexity of soil body interaction, it is necessary to establish rational weft element lateral earth pressure computation model under the influence of element
Based on substantial amounts of experiment.However, field test cost is too high, model test, which turns into, studies horizontal load-bearing body (friction pile, retaining wall
Deng) effective means of side geostatic shield characteristic.But measure simulation test device and method not to the utmost on this respect at present
Accurate rationally cost is higher, therefore, develops a kind of horizontal load-bearing body side soil pressure measurement model test method, with meet by
What lotus body side soil pressure distribution regular was studied needs to turn into the problem of project team is in the urgent need to address.
Therefore, the deficiency for more than, the invention provides a kind of horizontal load-bearing body soil pressure measurement test method.
The content of the invention
(1) technical problems to be solved
It is an object of the invention to provide a kind of accurate reasonable, lower-cost horizontal load-bearing body soil pressure measurement test method
To meet the research needs of horizontal load-bearing body soil pressure distribution regular in the case of bearing load is moved.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of horizontal load-bearing body soil pressure to measure test method, its
Comprise the following steps：
Step S1, water jacket is built, an inside groove is set in water jacket；
Step S2, prefabrication transverse load-bearing body, in the top and bottom reserving installation hole of horizontal load-bearing body, and by manufactured horizontal stroke
Vertically it is placed on to load-bearing body in inside groove；
Step S3, charging assembly is set in the side of horizontal load-bearing body, the one end and horizontal load-bearing body for making charging assembly connect
Connect, the other end is against in the side wall of water jacket；
Displacement measurement element is installed step S4, on horizontal load-bearing body, the soil body is filled in inside groove by test requirements document, and
The horizontal embedding multiple soil pressure measuring cells of load-bearing body side surface；
Step S5, drive load component operation, so that charging assembly promotes horizontal load-bearing body movement；
Step S6, record the horizontal load-bearing displacement body value measured by displacement measurement element and soil pressure measuring cell is surveyed
The horizontal load-bearing body side surface soil pressure force value obtained；
Step S7, according to the horizontal load-bearing displacement body value and horizontal load-bearing body side surface soil pressure force value measured in step S6, knot
The soil body physical parameter of load-bearing body side surface is closed, obtains the soil pressure distribution regular of load-bearing body side surface.
Wherein, in step S3, charging assembly includes upper charging assembly and lower charging assembly, upper charging assembly and lower loading group
Part is horizontally disposed and homonymy positioned at horizontal load-bearing body, and one end of upper charging assembly is against in the side wall of water jacket, the other end with
The top connection of horizontal load-bearing body, one end of lower charging assembly is against in the side wall of water jacket, the other end and horizontal load-bearing body
Bottom connects.
Wherein, the horizontal load-bearing body is multiple load-bearing stakes being set up in parallel, and upper charging assembly includes first be engaged
Transmission rod and the first jack, lower charging assembly include the second transmission rod and the second jack being engaged, in step s3, edge
Load-bearing stake bottom mounting apertures pass through the second guide rod, are connected at the both ends of the second guide rod with two the second transmission rods respectively with bolt assembly
Connect；Pass through the first guide rod along load-bearing stake top mounting holes, with bolt assembly by the first guide rod both ends respectively with two the first power transmissions
Bar connects.
Wherein, according to the position of two the first transmission rods and two the second transmission rods respectively on the cell wall of water jacket correspondingly
Two the first jack and two the second jack are arranged, and the first jack is contacted with the first transmission rod, are made second very heavy
Top contacts with the second transmission rod.
Wherein, in step S5, two the first jack and two the second jack are synchronously further applied load, corresponding to transverse direction by
The displacement model of translation occurs for lotus body.
Wherein, in step S5, two the first jack are synchronously further applied load, and occur to turn around bottom corresponding to horizontal load-bearing body
Dynamic displacement model.
Wherein, in step S5, two the second jack are synchronously further applied load, and occur to turn around top corresponding to horizontal load-bearing body
Dynamic displacement model.
Wherein, institute's displacement measurement element is dial gauge.
Wherein, the soil pressure measuring cell is earth pressure gauge.
Wherein, the horizontal load-bearing body is retaining wall.
(3) beneficial effect
The above-mentioned technical proposal of the present invention has the following advantages that：Horizontal load-bearing body soil pressure measurement experiment provided by the invention
Method sets prefabricated horizontal load-bearing body by building water jacket and inside groove in inside groove, by one end of charging assembly with laterally by
Lotus body is connected, and the other end is against in the side wall of water jacket, so as to be loaded to horizontal load-bearing body, due in horizontal load-bearing body
Upper installation displacement measurement element, in the embedding multiple soil pressure measuring cells of horizontal load-bearing body side surface, so as to horizontal load-bearing body by
During power, the shift value of horizontal load-bearing body and the soil pressure force value of horizontal load-bearing body side surface can be measured, so can draw by
Soil pressure distribution regular of the lotus body under different displacement models, this measurement test method is simple and practical, and measurement is accurate, and cost
It is relatively low.
Brief description of the drawings
Fig. 1 is soil pressure survey mould experiment dress used by transverse direction load-bearing body of embodiment of the present invention soil pressure measurement test method
The positive structure diagram put；
Fig. 2 is soil pressure survey mould experiment dress used by transverse direction load-bearing body of embodiment of the present invention soil pressure measurement test method
The overlooking the structure diagram put.
In figure, 1：Water jacket；2：Inside groove；3：Displacement measurement element；4：Transverse SBS；5：First guide rod；6：Soil pressure is surveyed
Measure element；7：First transmission rod；8：First jack；9：Second transmission rod；10：The soil body；12：Second guide rod；13：Second is very heavy
Top.
Embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.Following examples
For illustrating the present invention, but it is not limited to the scope of the present invention.
Horizontal load-bearing body soil pressure measurement test method provided by the invention comprises the following steps：
Step S1, water jacket is built, an inside groove is set in water jacket；
Step S2, prefabrication transverse load-bearing body, in the top and bottom reserving installation hole of horizontal load-bearing body, and by manufactured horizontal stroke
Vertically it is placed on to load-bearing body in inside groove；
Step S3, charging assembly is set in the side of horizontal load-bearing body, the one end and horizontal load-bearing body for making charging assembly connect
Connect, the other end is against in the side wall of water jacket；
Displacement measurement element is installed step S4, on horizontal load-bearing body, the soil body is filled in inside groove by test requirements document, and
The horizontal embedding multiple soil pressure measuring cells of load-bearing body side surface；
Step S5, drive load component operation, so that charging assembly promotes horizontal load-bearing body movement；
Step S6, record the horizontal load-bearing displacement body value measured by displacement measurement element and soil pressure measuring cell is surveyed
The horizontal load-bearing body side surface soil pressure force value obtained；
Step S7, according to the horizontal load-bearing displacement body value and horizontal load-bearing body side surface soil pressure force value measured in step S6, knot
The soil body physical parameter of load-bearing body side surface is closed, obtains the soil pressure distribution regular of load-bearing body side surface.
In above-mentioned technical proposal, by building water jacket and inside groove, prefabricated horizontal load-bearing body is set in inside groove, will be loaded
One end of component is connected with horizontal load-bearing body, and the other end is against in the side wall of water jacket, so as to add to horizontal load-bearing body
Carry, due to installing displacement measurement element on horizontal load-bearing body, in the embedding multiple soil pressure measuring cells of horizontal load-bearing body side surface,
So as to which during horizontal load-bearing body stress, the shift value of horizontal load-bearing body and the soil pressure of horizontal load-bearing body side surface can be measured
Force value, with reference to the soil body physical parameter of load-bearing body side surface, and then soil pressure distribution regular of the load-bearing under load can be drawn.
Specifically, in step S3, charging assembly may include charging assembly and lower charging assembly, upper charging assembly and it is lower plus
The homonymy that component level sets and is located at horizontal load-bearing body is carried, one end of upper charging assembly is against in the side wall of water jacket, it is another
End is connected with the top of horizontal load-bearing body, and one end of lower charging assembly is against in the side wall of water jacket, the other end and horizontal load-bearing
The bottom connection of body.So, action is loaded according to test requirements document, upper charging assembly and lower charging assembly simultaneously, can be to transverse direction
Load-bearing body carry out flatly moving type driving, charging assembly or lower charging assembly is individually loaded, formed to transverse direction by
The top drive loading of lotus body or bottom drive load, to adapt to different test requirements documents.
Preferably, the horizontal load-bearing body is multiple transverse SBSs being set up in parallel, and upper charging assembly includes being engaged
The first transmission rod and the first jack, lower charging assembly includes the second transmission rod and the second jack that are engaged, in step
In S3, transversely load-bearing stake bottom mounting apertures pass through the second guide rod, with bolt assembly by the both ends of the second guide rod respectively with two
Second transmission rod connects；Transversely load-bearing stake top mounting holes pass through the first guide rod, are divided the first guide rod both ends with bolt assembly
It is not connected with two the first transmission rods；According to the position of two the first transmission rods and two the second transmission rods respectively in the groove of water jacket
Two the first jack and two the second jack are correspondingly arranged on wall, and the first jack is contacted with the first transmission rod,
The second jack is set to be contacted with the second transmission rod.By driving jack, by the transmission of transmission rod, realize to transverse SBS
Drive load, and this load mode is simple, practical, efficiently.
In step S5, two the first jack and two the second jack can synchronously be further applied load；It is of course possible to individually make
Two the first jack are synchronously further applied load, or two the second jack are synchronously further applied load.Upper load so can be achieved
The synchronous or single drive load of component and lower charging assembly.
Specifically, institute's displacement measurement element is dial gauge；The soil pressure measuring cell is earth pressure gauge, general to use
JTM-V2000 type type vibration wire earth pressure gauges.
Certainly, in horizontal load-bearing body soil pressure of the invention measurement test method, the horizontal load-bearing body can also be selected
Retaining wall, the retaining wall are also required to carry out prefabricated, are put into afterwards in inside groove, by setting charging assembly to be loaded and being tested.
In addition, horizontal load-bearing body soil pressure measurement test method for a better understanding of the present invention, further below
Soil pressure surveys model test device used by introducing the horizontal load-bearing body soil pressure measurement test method of the lower present invention, such as Fig. 1 and
Shown in Fig. 2, corresponding soil pressure, which surveys model test device, includes water jacket 1, inside groove 2, upper charging assembly, lower charging assembly, soil pressure
Measuring cell 6 and displacement measurement element 3, water jacket 1 can be excavated on ground and then formed with concreting, then again in water jacket 1
Inside groove 2 is set, and the side of inside groove 2 can be opened wide, and the soil body 10 is provided with inside groove 2, horizontal load-bearing body is located in the soil body 10, the soil
Body 10 can be with stepped, it is possible to have certain slope, multiple soil pressure measuring cells 6 are embedded in horizontal load-bearing body side surface successively
The soil body 10 in, displacement measurement element 3 is arranged on horizontal load-bearing body, and upper charging assembly and lower charging assembly be horizontally disposed and position
In the homonymy of horizontal load-bearing body.
Specifically, one end of upper charging assembly is against in the side wall of water jacket 1, and the other end at the top of horizontal load-bearing body with connecting
Connect, one end of lower charging assembly is against in the side wall of water jacket 1, and the other end is connected with the bottom of horizontal load-bearing body.Wherein, above-mentioned horizontal stroke
It is transverse SBS 4 to load-bearing body, transverse SBS 4 can be cylindric or be prism-shaped；Model water jacket 1 and inside groove 2 are generally
Formed with concreting, upper charging assembly includes the first jack 8 and the first transmission rod 7, and the bottom of the first jack 8 is fixed
In the side wall of water jacket 1, the top of the first jack 8 is connected with one end of the first transmission rod 7, the other end of the first transmission rod 7 with
The top connection of horizontal load-bearing body；Lower charging assembly includes the second jack 13 and the second transmission rod 9, the bottom of the second jack 13
Portion is fixed in the side wall of water jacket 1, and the top of the second jack 13 is connected with one end of the second transmission rod 9, the second transmission rod 9 it is another
One end is connected with the bottom of horizontal load-bearing body, and the jack 13 of the first jack 8 and second is using FCY-20 elongateds hydraulic pressure thousand
Jin top.
Wherein, horizontal load-bearing body can be single transverse SBS 4, or multiple transverse SBSs 4 being set up in parallel.When
During the transverse SBS 4 being set up in parallel using multiple, multiple tops of transverse SBSs 4 are connected by the first guide rod 5, the first guide rod
5 both ends put charging assembly by parallel two respectively and are connected with the inwall of water jacket 1, namely the both ends difference of the first guide rod 5
It is connected by first transmission rod 7 with the first jack 8 being fixed in the side wall of water jacket 1；Multiple bottoms of transverse SBS 4 lead to
Cross the second guide rod 12 to connect, the both ends of the second guide rod 12 are connected by the inwall of parallel two sets lower charging assemblies and water jacket 1 respectively
Connect, namely the both ends of the second guide rod 12 pass through second transmission rod 9 and the second jack being fixed in the side wall of water jacket 1 respectively
13 connections, the top of such transverse SBS 4 have two the first transmission rods 7 to drive, and the bottom of transverse SBS 4 is by two second
Transmission rod 9 drives, and evenly, the transmission of transmission rod is more accurate reliable for the translation stress of transverse SBS 4.
In summary, horizontal load-bearing body soil pressure provided by the invention measures test method by building water jacket and inside groove,
Prefabricated horizontal load-bearing body is set in inside groove, one end of charging assembly is connected with horizontal load-bearing body, the other end is against water jacket
Side wall on, so as to be loaded to horizontal load-bearing body, due on horizontal load-bearing body install displacement measurement element, in horizontal stroke
To the embedding multiple soil pressure measuring cells of load-bearing body side surface, so as to which during horizontal load-bearing body stress, transverse direction can be measured
The soil pressure force value of the shift value of load-bearing body and horizontal load-bearing body side surface, and then can show that different displacement moulds are occurring for horizontal load-bearing body
Soil pressure distribution regular under formula, this measurement test method is simple and practical, and measurement is accurate, and cost is relatively low.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and modification can also be made, these improvement and modification
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of horizontal load-bearing body soil pressure measurement test method, it is characterised in that it comprises the following steps：
Step S1, water jacket is built, an inside groove is set in water jacket；
Step S2, prefabrication transverse load-bearing body, in the top and bottom reserving installation hole of horizontal load-bearing body, and by manufactured transverse direction by
Lotus body is vertically placed in inside groove；The soil body is provided with the inside groove, the horizontal load-bearing body is located in the soil body；The soil
Body is stepped or have a certain slope；
Step S3, charging assembly is set in the side of horizontal load-bearing body, one end of charging assembly is connected with horizontal load-bearing body, separately
One end is against in the side wall of water jacket；Charging assembly includes upper charging assembly and lower charging assembly, upper charging assembly and lower loading group
Part is horizontally disposed and homonymy positioned at horizontal load-bearing body, and one end of upper charging assembly is against in the side wall of water jacket, the other end with
The top connection of horizontal load-bearing body, one end of lower charging assembly is against in the side wall of water jacket, the other end and horizontal load-bearing body
Bottom connects；
Wherein, the horizontal load-bearing body is multiple load-bearing stakes being set up in parallel, and upper charging assembly includes the first power transmission being engaged
Bar and the first jack, lower charging assembly include the second transmission rod and the second jack being engaged, installed along load-bearing stake bottom
Hole passes through the second guide rod, is connected at the both ends of the second guide rod with two the second transmission rods respectively with bolt assembly；Along load-bearing stake top
Portion's mounting hole passes through the first guide rod, is connected at the first guide rod both ends with two the first transmission rods respectively with bolt assembly；
Displacement measurement element is installed step S4, on horizontal load-bearing body, the soil body is filled in inside groove by test requirements document, and in transverse direction
The embedding multiple soil pressure measuring cells of load-bearing body side surface；
Step S5, drive load component operation, so that charging assembly promotes horizontal load-bearing body movement；
Step S6, record measured by horizontal load-bearing displacement body value and the soil pressure measuring cell measured by displacement measurement element
Horizontal load-bearing body side surface soil pressure force value；
Step S7, according to the horizontal load-bearing displacement body value and horizontal load-bearing body side surface soil pressure force value measured in step S6, with reference to by
The soil body physical parameter of lotus body side surface, obtain the soil pressure distribution regular of load-bearing body side surface.
2. horizontal load-bearing body soil pressure measurement test method according to claim 1, it is characterised in that according to two first
Two the first jack and two are correspondingly arranged in the position of transmission rod and two the second transmission rods on the cell wall of water jacket respectively
Second jack, and the first jack is contacted with the first transmission rod, the second jack is contacted with the second transmission rod.
3. horizontal load-bearing body soil pressure measurement test method according to claim 2, it is characterised in that in step S5, two
Individual first jack and two the second jack are synchronously further applied load, and the displacement model of translation occurs corresponding to horizontal load-bearing body.
4. horizontal load-bearing body soil pressure measurement test method according to claim 2, it is characterised in that in step S5, two
Individual first jack is synchronously further applied load, and the displacement model around lower rotation occurs corresponding to horizontal load-bearing body.
5. horizontal load-bearing body soil pressure measurement test method according to claim 2, it is characterised in that in step S5, two
Individual second jack is synchronously further applied load, the displacement model for occurring to rotate around top corresponding to horizontal load-bearing body.
6. horizontal load-bearing body soil pressure measurement test method according to claim 1, it is characterised in that institute's displacement measurement
Element is dial gauge.
7. horizontal load-bearing body soil pressure measurement test method according to claim 1, it is characterised in that the soil pressure is surveyed
Amount element is earth pressure gauge.
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| CN110468885B (en) * | 2019-07-26 | 2023-11-10 | 浙江工业大学 | Test device and test method for judging soil arch effect action range of top surface of underground structure |
| CN110905010B (en) * | 2019-11-27 | 2021-01-29 | 昆山市交通工程质量监督站 | Stable mounting device and mounting method for earth pressure gauge of earth retaining wall on bridge side |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566924A (en) * | 2003-06-25 | 2005-01-19 | 胜利石油管理局钻井工艺研究院 | Pile-soil action indoor testing apparatus |
| CN102620992A (en) * | 2012-04-01 | 2012-08-01 | 中交上海三航科学研究院有限公司 | Loading system and method for simulating soil pressure in test room |
| CN103344481A (en) * | 2013-06-24 | 2013-10-09 | 重庆交通大学 | Test method and system for wall-soil interaction force |
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2014
- 2014-07-31 CN CN201410374516.2A patent/CN104181044B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1566924A (en) * | 2003-06-25 | 2005-01-19 | 胜利石油管理局钻井工艺研究院 | Pile-soil action indoor testing apparatus |
| CN102620992A (en) * | 2012-04-01 | 2012-08-01 | 中交上海三航科学研究院有限公司 | Loading system and method for simulating soil pressure in test room |
| CN103344481A (en) * | 2013-06-24 | 2013-10-09 | 重庆交通大学 | Test method and system for wall-soil interaction force |
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