CN102912812A - Model test device for simulating jacked pile driving process - Google Patents
Model test device for simulating jacked pile driving process Download PDFInfo
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- CN102912812A CN102912812A CN2011102214459A CN201110221445A CN102912812A CN 102912812 A CN102912812 A CN 102912812A CN 2011102214459 A CN2011102214459 A CN 2011102214459A CN 201110221445 A CN201110221445 A CN 201110221445A CN 102912812 A CN102912812 A CN 102912812A
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Abstract
The invention relates to a model test device for simulating a jacked pile driving process. The model test device comprises a hand-operated chain-type static penetrometer, a model box, a hill-shaped plate, a pad pressing plate, an iron rod, a pressure sensor, a model pile and a positioning and guiding component, wherein the hand-operated chain-type static penetrometer is fixed at the top of the model box; the hill-shaped plate is fixed on a chain of the hand-operated chain-type static penetrometer; the pad pressing plate is padded under the hill-shaped plate; the iron rod extends into the hand-operated chain-type static penetrometer from the top, and passes through the hill-shaped plate and the pad pressing plate in sequence; the lower end of the iron rod is connected with the pressure sensor; the model pile is arranged under the pressure sensor; and the positioning and guiding component is used for fixing the model pile to ensure that the model pile vertically passes through the bottom of the hand-operated chain-type static penetrometer and extends into the model box. Compared with the prior art, the model test device has the advantages that jacked piles can continuously penetrate into soil, and the pile driving rate is controllable.
Description
Technical field
The present invention relates to a kind of model test apparatus, especially relate to a kind of model test apparatus of simulating Jacked Pile Driving.
Background technology
In recent years, day by day improve and raising that urban environmental protection requires the welcome of the departments such as silent piling is designed deeply, construction along with Construction Technology for Static Pressed Pile and machinery.In recent years regional on China weak soil ground and densely populated comparatively extensive use of metropolis, and obtain good effect, become main stake type in China's Base foundation design construction.
Yet the pile driving process of static pressed pile is the penetration process of a stable state, the static load test of mechanical characteristic difference and stake in penetration process, and it is a dynamic process.Many influence factors and the pile sinking characteristic of stable state injection can not be considered and explain to theoretical research fully.Therefore, for remedying the limitation of theory analysis, for important engineering, need to analyze in conjunction with indoor model test, key technology wherein be how to simulate static pressed pile can be by the continuous injection soil body of certain speed, and not yet find at present the report of relevant this problem.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of continuously injection soil body, the model test apparatus of the simulation Jacked Pile Driving that pile settlement rate is controlled for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: a kind of model test apparatus of simulating Jacked Pile Driving, it is characterized in that, comprise manual-chain formula static penetrometer, model casing, gable plate, the pad pressing plate, iron staff, pressure sensor, Model Pile, the positioning and guiding assembly, described manual-chain formula static penetrometer is fixed in the model casing top, described gable plate is fixed on the chain of manual-chain formula static penetrometer, described pad follower gasket is located at the gable plate below, described iron staff stretches into manual-chain formula static penetrometer from the top, and pass successively gable plate and fill up pressing plate, the lower end Bonding pressure sensor of iron staff, described Model Pile is located at the pressure sensor below, described positioning and guiding assembly is used for fixed model stake position, and the assurance Model Pile is vertically passed manual-chain formula static penetrometer bottom and stretched into model casing.
Described positioning and guiding assembly comprises the first location-plate, the second location-plate and locating sleeve, described the first location-plate is located at the model casing top, described the second location-plate is located at the Model Pile middle part and is fixed on the support of manual-chain formula static penetrometer, described locating sleeve is located at Model Pile top, the Bonding pressure sensor.
Described the first location-plate central authorities are provided with a full mould locating hole, are provided with a half module locating hole near the model casing side-walls, and the first location-plate is folded in the model casing top by U-shaped.
Described the second location-plate is provided with the locating hole that passes for Model Pile, and the second location-plate is connected by screw angle steel, and this angle steel is provided with the U-shaped folder, is folded in by U-shaped on the support of manual-chain formula static penetrometer.
Be equipped with sliding tray on described the second location-plate and the angle steel, adjust the second location-plate position by this sliding tray.
Described locating sleeve middle part is steel sheet, and top is the steel pipe with the pressure sensor form fit, and the bottom is the steel pipe with the Model Pile form fit.
A sidewall of described model casing casing is tempered glass, and its excess-three face sidewall is steel plate.
The chain of described manual-chain formula static penetrometer is provided with latch, and described gable plate is connected on the chain of manual-chain formula static penetrometer by latch.
Compared with prior art, the present invention is the injection soil body continuously, broken through the restriction that Model Pile in the experimental rig of existing simulation Jacked Pile Driving must the segmentation injection soil body, can shake by control the speed of static penetrometer crank, the control pile settlement rate, model casing one side is provided with tempered glass in addition, the displacement field situation of change of the stake side soil body when can be used for observing half module stake injection, and then study more accurately Jacked Pile Driving.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the syndeton schematic diagram at gable plate of the present invention place;
Fig. 3 is the structural representation of the present invention's the first location-plate;
Fig. 4 is the structural representation of the present invention's the second location-plate;
Fig. 5 is the structural representation of locating sleeve of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
Shown in Fig. 1～5, a kind of model test apparatus of simulating Jacked Pile Driving, manual-chain formula static penetrometer 1 is fixed in the model casing top by 4 U-shaped folders 9, the chain 11 of manual-chain formula static penetrometer 1 is provided with latch 13, these latch 13 chucking gable plates 3 are fixed on the chain 11 gable plate 3.Pad pressing plate 4 pads are located at the below of gable plate 3.A preformed hole that can allow iron staff 2 pass through is left at the top of manual-chain formula static penetrometer 1, and iron staff 2 stretches into this preformed hole successively from the top, and passes successively gable plate 3 and pad pressing plate 4, and the lower end is bolted pressure sensor 5.Model Pile 7 adopts circular full mould stake, the upper end is connected to the below of pressure sensor 5 by locating sleeve 63, these locating sleeve 63 middle parts are steel sheet 631, and top is the steel pipe 632 with pressure sensor 5 form fit, and the bottom is the steel pipe 633 with Model Pile 7 form fit.The locating hole 621 of establishing on the second location-plate 62 is passed at Model Pile 7 middle parts, the second location-plate 62 is connected with angle steel 8 by screw 81, angle steel 8 is provided with U-shaped folder 9, be folded on the support 12 of manual-chain formula static penetrometer 1 by U-shaped folder 9, be equipped with sliding tray 82 on the second location-plate 62 and the angle steel 8, the position of adjusting the second location-plate 62 by sliding tray 82 makes Model Pile 7 keep vertical.The first location-plate 61 is fixed on model casing 10 tops by U-shaped folder 9, and the preformed hole that manual-chain formula static penetrometer 1 bottom is passed in the lower end of Model Pile 7 stretches in the model casing 7 with the full mould locating hole 611 that is located at the first location-plate 61 central authorities.
When using this device, at first filling is tested and is used the soil body in model casing 7, manual-chain formula static penetrometer 1 and the first location-plate 61 are placed model casing 7 positive middle parts, fixing with U-shaped folder 9, the lower end of Model Pile 7 is passed the preformed hole of manual-chain formula static penetrometer 1 bottom and is located at the full mould locating hole 611 of the first location-plate 61 central authorities, unclamp U-shaped folder 9 and adjust positions, guarantee that pile body is vertical after, clamp U-shaped folder 9.The second location-plate 62 is enclosed within Model Pile 7 middle parts, and is fixed on the support 12 of manual-chain formula static penetrometer 1 with two U-shapeds folder 9, adjust the position of screw 81, determine that pile body is vertical after, tighten screw 81, and U-shaped folder 9 clamped.Locating sleeve 62 is inserted in Model Pile 7 tops and pressure sensor 5 bottoms, and iron staff 2 is connected with pressure sensor 5 and passes manual-chain formula static penetrometer 1 top preformed hole.Gable plate 3 and pad pressing plate 4 are installed, are adjusted latch 13 positions of chain 11, itself and gable plate 3 are tightened.Shake one week of crank of manual-chain formula static penetrometer 1, chain 11 moves down 2cm, and the speed of shaking crank by control in the test is controlled piling speed, and as long as iron staff 2 length are enough, Model Pile 7 is the injection soil body uninterruptedly.
By default foil gauge in pile body, in the soil body, bury the instrument such as earth pressure cell underground, can be used for analyzing static pressed pile in the different soil bodys, in the continuous penetration process of different pile settlement rates, the displacement stress situation of change of the bearer properties of Model Pile and pile peripheral earth.Behind the everything in readiness, can carry out the full mould test of single pile, then, injection the second pile, the 3rd pile are continued in the position of capable of regulating positioning and guiding assembly and manual-chain formula static penetrometer 1 ..., and then the sinking mechanism of a research static pressed pile clump of piles.
A kind of model test apparatus of simulating Jacked Pile Driving, Model Pile 7 adopts semicircular half module stake, and locating hole 621 correspondences on the second location-plate 62 are opened and are semicircle, and the steel pipe of locating sleeve 63 bottoms also cooperates the semicircle steel pipe of being shaped as of Model Pile 7.When using this device, Model Pile 7 is passed half film locating hole 612 of close model casing 7 sidewalls on the first location-plate 61, adjust the position of manual-chain formula static penetrometer 1 and positioning and guiding assembly, make Model Pile 7 be close to model casing 7 sidewalls and stretch into the soil body, this sidewall adopts tempered glass, the displacement field of the stake side soil body changed when convenient observation Model Pile 7 stretched into the soil body, and remainder is with embodiment 1.
Claims (8)
1. model test apparatus of simulating Jacked Pile Driving, it is characterized in that, comprise manual-chain formula static penetrometer, model casing, gable plate, the pad pressing plate, iron staff, pressure sensor, Model Pile, the positioning and guiding assembly, described manual-chain formula static penetrometer is fixed in the model casing top, described gable plate is fixed on the chain of manual-chain formula static penetrometer, described pad follower gasket is located at the gable plate below, described iron staff stretches into manual-chain formula static penetrometer from the top, and pass successively gable plate and fill up pressing plate, the lower end Bonding pressure sensor of iron staff, described Model Pile is located at the pressure sensor below, described positioning and guiding assembly is used for fixed model stake position, and the assurance Model Pile is vertically passed manual-chain formula static penetrometer bottom and stretched into model casing.
2. a kind of model test apparatus of simulating Jacked Pile Driving according to claim 1, it is characterized in that, described positioning and guiding assembly comprises the first location-plate, the second location-plate and locating sleeve, described the first location-plate is located at the model casing top, described the second location-plate is located at the Model Pile middle part and is fixed on the support of manual-chain formula static penetrometer, described locating sleeve is located at Model Pile top, the Bonding pressure sensor.
3. a kind of model test apparatus of simulating Jacked Pile Driving according to claim 2, it is characterized in that, described the first location-plate central authorities are provided with a full mould locating hole, are provided with a half module locating hole near the model casing side-walls, and the first location-plate is folded in the model casing top by U-shaped.
4. a kind of model test apparatus of simulating Jacked Pile Driving according to claim 2, it is characterized in that, described the second location-plate is provided with the locating hole that passes for Model Pile, the second location-plate is connected by screw angle steel, this angle steel is provided with the U-shaped folder, is folded in by U-shaped on the support of manual-chain formula static penetrometer.
5. a kind of model test apparatus of simulating Jacked Pile Driving according to claim 4 is characterized in that, is equipped with sliding tray on described the second location-plate and the angle steel, adjusts the second location-plate position by this sliding tray.
6. a kind of model test apparatus of simulating Jacked Pile Driving according to claim 2 is characterized in that, described locating sleeve middle part is steel sheet, and top is the steel pipe with the pressure sensor form fit, and the bottom is the steel pipe with the Model Pile form fit.
7. according to the described a kind of model test apparatus of simulating Jacked Pile Driving of claim l, it is characterized in that, a sidewall of described model casing casing is tempered glass, and its excess-three face sidewall is steel plate.
8. a kind of model test apparatus of simulating Jacked Pile Driving according to claim 1, it is characterized in that, the chain of described manual-chain formula static penetrometer is provided with latch, and described gable plate is connected on the chain of manual-chain formula static penetrometer by latch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102214459A CN102912812A (en) | 2011-08-03 | 2011-08-03 | Model test device for simulating jacked pile driving process |
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| CN2011102214459A CN102912812A (en) | 2011-08-03 | 2011-08-03 | Model test device for simulating jacked pile driving process |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122604A (en) * | 2013-03-12 | 2013-05-29 | 长安大学 | Chain transmission continuous penetrating type static sounding device |
| CN105424913A (en) * | 2015-12-29 | 2016-03-23 | 中国科学院武汉岩土力学研究所 | Test apparatus for simulating soil plugging effect generated in pile sinking process of open tube pile |
| CN105696634A (en) * | 2016-04-05 | 2016-06-22 | 王永洪 | Method of preparing viscous soil layers and vertically burying static pressure piles in soil |
| CN105862934A (en) * | 2016-04-05 | 2016-08-17 | 王永洪 | Model barrel device for viscosity soil layer preparing and static pressure pile vertical burying |
| CN109138010A (en) * | 2018-11-06 | 2019-01-04 | 郑州大学 | A kind of fixed device of pile body of interior pile-soil model test |
| CN111456117A (en) * | 2020-04-02 | 2020-07-28 | 中北大学 | Pile forming loading model test device and method for stiff composite pile |
| CN111576327A (en) * | 2020-04-16 | 2020-08-25 | 舟山市质量技术监督检测研究院 | Pile inserting and soil body damping integrated simulation device for self-elevating ocean engineering platform under complex stratum |
| CN112962685A (en) * | 2021-02-01 | 2021-06-15 | 浙江大学 | Pile pressing verticality control injection device for pile foundation centrifugal test |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122604A (en) * | 2013-03-12 | 2013-05-29 | 长安大学 | Chain transmission continuous penetrating type static sounding device |
| CN103122604B (en) * | 2013-03-12 | 2016-05-18 | 长安大学 | The continuous penetration type static sounding device of a kind of chain drive |
| CN105424913A (en) * | 2015-12-29 | 2016-03-23 | 中国科学院武汉岩土力学研究所 | Test apparatus for simulating soil plugging effect generated in pile sinking process of open tube pile |
| CN105424913B (en) * | 2015-12-29 | 2017-04-19 | 中国科学院武汉岩土力学研究所 | Test apparatus for simulating soil plugging effect generated in pile sinking process of open tube pile |
| CN105696634A (en) * | 2016-04-05 | 2016-06-22 | 王永洪 | Method of preparing viscous soil layers and vertically burying static pressure piles in soil |
| CN105862934A (en) * | 2016-04-05 | 2016-08-17 | 王永洪 | Model barrel device for viscosity soil layer preparing and static pressure pile vertical burying |
| CN109138010A (en) * | 2018-11-06 | 2019-01-04 | 郑州大学 | A kind of fixed device of pile body of interior pile-soil model test |
| CN109138010B (en) * | 2018-11-06 | 2023-12-12 | 中铁十五局集团有限公司 | Pile body fixing device for indoor pile soil model test |
| CN111456117A (en) * | 2020-04-02 | 2020-07-28 | 中北大学 | Pile forming loading model test device and method for stiff composite pile |
| CN111576327A (en) * | 2020-04-16 | 2020-08-25 | 舟山市质量技术监督检测研究院 | Pile inserting and soil body damping integrated simulation device for self-elevating ocean engineering platform under complex stratum |
| CN112962685A (en) * | 2021-02-01 | 2021-06-15 | 浙江大学 | Pile pressing verticality control injection device for pile foundation centrifugal test |
| CN112962685B (en) * | 2021-02-01 | 2022-04-26 | 浙江大学 | Pile pressing verticality control injection device for pile foundation centrifugal test |
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Application publication date: 20130206 |