CN109098217B - Device and method for researching influence of offshore jack-up drilling platform plug pile on adjacent pile shoe - Google Patents
Device and method for researching influence of offshore jack-up drilling platform plug pile on adjacent pile shoe Download PDFInfo
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- CN109098217B CN109098217B CN201810991917.0A CN201810991917A CN109098217B CN 109098217 B CN109098217 B CN 109098217B CN 201810991917 A CN201810991917 A CN 201810991917A CN 109098217 B CN109098217 B CN 109098217B
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- E—FIXED CONSTRUCTIONS
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- E02D33/00—Testing foundations or foundation structures
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Abstract
The invention discloses a research and test device for the influence of a pile insert of an offshore jack-up drilling platform on adjacent pile shoes, which comprises a test soil tank, a movable base, a longitudinal steel beam, a main transverse steel beam, an auxiliary transverse steel beam, a pile insert and plug loading device and an affected pile shoe loading device. Has important significance for foundation stability and safety evaluation of the jack-up platform.
Description
Technical Field
The invention belongs to the technical field of ocean engineering, and particularly relates to a research and test device and method for influence of a pile plug of an offshore jack-up drilling platform on adjacent pile shoes.
Background
In recent years, along with the development of ocean oil gas in China, the current offshore jack-up drilling platform has the advantages of strong mobility, capability of effectively reducing the cost of the ocean oil gas development, good operation stability and the like, and is widely applied, and the main structure of the offshore jack-up drilling platform comprises an upper structure, a pile leg and a pile shoe. The independent pile shoe foundation in the form of three pile legs is generally adopted, and the independent pile shoe foundation can play a role in supporting and anti-overturning an upper platform in a seabed soil body. Compared with the traditional pile foundation platform, the pile foundation platform has smaller mud entering depth, and can obtain larger bearing capacity and better stability under the same mud entering depth.
Jack-up rigs (vessels) typically have an existing or wellhead platform in the vicinity when drilling or servicing operations are performed. The diameter range of the current platform pile shoe is generally between 6 and 20m, and the pile shoe belongs to an oversized diameter structure. Therefore, the pile shoe penetration process can generate larger soil extrusion and discharge effects in the downward and peripheral directions, and the secondary soil extrusion and discharge effects exist in the pulling-out process. Therefore, the pile inserting and pulling process of the offshore jack-up drilling platform inevitably has adverse effects on the foundation of surrounding platforms, and the surrounding platforms can be inclined or even overturned under severe conditions, so that serious engineering accidents are caused.
Therefore, the simulation of the plugging of the marine jack-up drilling platform is used for analyzing and evaluating the influence of adjacent pile shoes, and has important significance for the safety evaluation of the adjacent platform and the drilling platform.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a research and test device for the influence of a pile plug of an offshore jack-up drilling platform on adjacent pile shoes.
The invention is realized by the following technical scheme:
the utility model provides an offshore jack-up drilling platform plug stake is to adjacent pile shoe influence research test device, including test soil groove, movable base, vertical girder steel, main horizontal girder steel, vice horizontal girder steel, plug pile shoe loading device and affected pile shoe loading device, be provided with movable base in test soil groove both sides, be provided with vertical girder steel on movable base, be provided with main horizontal girder steel and vice horizontal girder steel perpendicular and along its removal with vertical girder steel between vertical girder steel on test soil groove, be provided with plug pile shoe loading device along its removal on main horizontal girder steel, be provided with the affected pile shoe loading device along its removal on vice horizontal girder steel.
In the technical scheme, the movable base moves in reality through the load-carrying casters arranged at the bottom.
In the technical scheme, the bottom of the movable base is provided with leveling feet for fixing positions.
In the technical scheme, the movable base is composed of a base steel frame and a counterweight steel box which can be embedded into the base steel frame, and the stability of the main transverse steel beam and the auxiliary transverse steel beam is realized through the counterweight steel box.
In the above technical scheme, the quantity of vice horizontal girder steel is 2, is provided with 2 sets of affected shoe loading boots at every vice horizontal girder steel, 2 vice horizontal girder steel are located the both sides of main horizontal girder steel.
In the above technical scheme, the 2 auxiliary transverse steel beams are positioned on one side of the main transverse steel beam.
In the above technical scheme, the plug pile shoe loading device realizes the movement on the main transverse steel beam through the longitudinal guide rail sliding block arranged at the bottom, and the affected pile shoe loading device realizes the movement on the auxiliary transverse steel beam through the transverse guide rail sliding block arranged at the bottom.
In the above technical scheme, plug stake boots loading device includes integral electronic jar, electric putter, guide bar, electronic jar movable plate and bracing board, and the bottom of integral electronic jar sets up electric putter, and electric putter's bottom is connected electronic jar movable plate, and electric putter's both sides are provided with the guide bar that is used for spacing, are connected with the transverse guide slider at the inclined strut board that the integral electronic jar set up through both sides.
In the technical scheme, the affected pile shoe loading pile shoe comprises a stepping motor, a screw rod, a motor mounting plate, a lower base plate, a base plate supporting column, a guide rod sliding pair, a horizontal upper moving plate, an upper moving plate screw rod pair, a vertical force transmission guide rod, a horizontal lower moving plate, a flange plate and a pile shoe loading rod; the motor mounting plate and the lower backing plate are connected through a backing plate supporting column, the stepping motor is arranged below the motor mounting plate, a screw rod is arranged at the upper end of the stepping motor, the screw rod penetrates through the motor mounting plate and is connected with the upper horizontal moving plate through the upper moving plate screw rod, the upper horizontal moving plate is connected with the lower horizontal moving plate through a vertical force transmission guide rod penetrating through the motor mounting plate and the lower backing plate to form a whole, a flange plate is arranged on the lower end face of the lower horizontal moving plate, and a pile shoe loading rod is arranged at the lower end of the flange plate.
In the technical scheme, the research test device further comprises a computer, a dynamic data acquisition instrument and a sensor, wherein the computer is connected with the sensor through the dynamic data acquisition instrument, the sensor comprises a displacement sensor and a tension-compression sensor, the displacement sensor is a stay-supported displacement sensor, the sensor main body is arranged on the horizontal upper moving plate, one end of a sensor stay wire, which penetrates through the horizontal upper moving plate, is fixed on the motor mounting plate, and the sensor obtains displacement change of the loading device by detecting the length change of the stay wire; the tension-compression sensor is an S-shaped strain sensor, is arranged on a pile shoe loading rod, can measure the vertical force born by the pile shoe, can acquire the pile shoe stress and the pile shoe displacement which change in real time through the sensor through a dynamic data acquisition instrument, and outputs the obtained force and displacement through computer software.
The method for researching and testing the influence of the offshore jack-up drilling platform plug pile on the adjacent pile shoe is carried out according to the following steps:
filling sand into a sand tank by using a sand rain method before the test starts, slowly injecting water to saturate the sand, and leveling the soil surface after the sand is filled to a specified height; the pile shoe model is arranged on a loading rod of a loading system, and is locked by a fixing bolt after the pile shoe is positioned according to the experimental requirement interval by utilizing a sliding guide rail; connecting data acquisition instrument and computer, and debugging each sensor and computer software;
step two, the pile shoe model is slowly moved downwards to be just contacted with the soil surface by a pile shoe loading device, four affected pile shoes are penetrated at a constant speed, and a data acquisition instrument and a computer start to acquire the displacement and bearing capacity data of the affected pile shoes at the moment; after the affected pile shoe is penetrated to a preset position, the pile shoe is kept static, the pile shoe is inserted into the soil, and is pulled up to leave the soil surface after being penetrated to a preset depth; the affected pile shoe continues to penetrate downwards at the original position, and the penetration is stopped at the preset position, so that data acquisition is stopped; after the test is finished, the affected pile shoe is pulled up to leave the soil surface;
and thirdly, arranging experimental data of the affected pile shoes before and after pile shoe insertion and extraction under different pile shoe distances to obtain a bearing capacity-displacement curve. And comparing the bearing capacity-displacement relation before and after the insertion, obtaining a bearing capacity reduction rate-interval curve which is influenced by the insertion of the pile shoe and is adjacent to the pile shoe, wherein the pile shoe interval is taken as a transverse axis in a coordinate system, and the bearing capacity reduction rate is taken as a longitudinal axis.
The invention has the advantages and beneficial effects that:
the invention relates to test equipment for small model scale aiming at the influence study of the jack-up platform plug shoe on adjacent pile shoes, which can effectively simulate the influence of the jack-up platform plug shoe on adjacent pile shoes with different intervals and accurately measure soil resistance and deformation in the loading process. Has important significance for foundation stability and safety evaluation of the jack-up platform.
Drawings
FIG. 1 is a schematic overall view of the apparatus.
Fig. 2 is a schematic diagram of a mobile base.
FIG. 3 is a schematic diagram of a positioning system.
Fig. 4 is a schematic diagram of a loading device for plug piles.
Figure 5 is a schematic diagram of an affected shoe loading device.
FIG. 6 is a schematic diagram of a loading device.
Fig. 7 is a schematic diagram of a control and measurement system.
Fig. 8 is a plot of load bearing capacity reduction versus spacing.
Wherein: 1. a movable base; 2. longitudinal steel beams; 3. a main transverse steel girder; 4. auxiliary transverse steel beams; 5. a test soil tank; 6, inserting pile shoe loading devices; 7. an affected shoe loading device; 8. a base steel frame; 9. a counterweight steel box; 10. load castor; 11. leveling the footing; 12. a longitudinal guide rail; 13. a longitudinal guide rail slide block; 14. a transverse guide rail; 15. a transverse guide rail slide block; 16. a stepping motor; 17. a screw rod; 18. a motor mounting plate; 19. a lower backing plate; 20. a backing plate support column; 21. a guide rod sliding pair; 22. a horizontal upper moving plate; 23. a movable plate screw pair is arranged; 24. a vertical force transmission guide rod; 25. a horizontal lower moving plate; 26. a flange plate; 27. a pile shoe loading rod; 28. an integral electric cylinder; 29. an electric push rod; 30. a guide rod; 31. an electric cylinder moving plate; 32. a diagonal brace plate; 33. a computer; 34. loading a controller; 35. a dynamic data acquisition instrument; 36. and a data line.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
In order to make the person skilled in the art better understand the solution of the present invention, the following describes the solution of the present invention with reference to specific embodiments.
Example 1
The utility model provides an offshore jack-up drilling platform plug stake is to adjacent pile shoe influence research test device, including test soil groove 5, movable base 1, vertical girder steel 2, main horizontal girder steel 3, vice horizontal girder steel 4, plug pile shoe loading device 6 and influenced pile shoe loading device 7, be provided with movable base in test soil groove both sides, be provided with vertical girder steel on movable base, be provided with main horizontal girder steel and vice horizontal girder steel perpendicular and along its removal with vertical girder steel between vertical girder steel crossing on test soil groove, be provided with plug pile shoe loading device along its removal on main horizontal girder steel, be provided with the influenced pile shoe loading device along its removal on vice horizontal girder steel.
The movable base moves in reality through the load-carrying casters 10 arranged at the bottom; the bottom of the movable base is provided with a leveling foot 11 for fixing the position; the movable base consists of a base steel frame and a counterweight steel box 9 which can be embedded in the base steel frame 8, and the stability of the main transverse steel beam and the auxiliary transverse steel beam is realized through the counterweight steel box.
The number of the auxiliary transverse steel beams is 2, 2 groups of affected pile shoe loading pile shoes are arranged on each auxiliary transverse steel beam, and the 2 auxiliary transverse steel beams are located on two sides of the main transverse steel beam.
The pile shoe loading device is used for realizing the movement on the main transverse steel beam through the longitudinal guide rail sliding block arranged at the bottom, and the affected pile shoe loading device is used for realizing the movement on the auxiliary transverse steel beam through the transverse guide rail sliding block arranged at the bottom. The pile inserting and pulling boot loading device comprises an integral electric cylinder 28, an electric push rod 29, guide rods 30, an electric cylinder moving plate 31 and inclined support plates 32, wherein the electric push rod is arranged at the bottom of the integral electric cylinder, the electric cylinder moving plate is connected with the bottom of the electric push rod, guide rods used for limiting are arranged on two sides of the electric push rod, and the inclined support plates arranged on two sides of the integral electric cylinder are connected with the transverse guide rail sliding blocks.
The affected pile shoe loading pile shoe comprises a stepping motor 16, a screw rod 17, a motor mounting plate 18, a lower backing plate 19, a backing plate support column 20, a guide rod sliding pair 21, a horizontal upper moving plate 22, an upper moving plate screw rod pair 23, a vertical force transmission guide rod 24, a horizontal lower moving plate 25, a flange 26 and a pile shoe loading rod 27; the motor mounting plate and the lower backing plate are connected through a backing plate supporting column, the stepping motor is arranged below the motor mounting plate, a screw rod is arranged at the upper end of the stepping motor, the screw rod penetrates through the motor mounting plate and is connected with the upper horizontal moving plate through the upper moving plate screw rod, the upper horizontal moving plate is connected with the lower horizontal moving plate through a vertical force transmission guide rod penetrating through the motor mounting plate and the lower backing plate to form a whole, a flange plate is arranged on the lower end face of the lower horizontal moving plate, and a pile shoe loading rod is arranged at the lower end of the flange plate.
The research test device further comprises a computer, a dynamic data acquisition instrument and a sensor, wherein the computer is connected with the sensor through the dynamic data acquisition instrument, the sensor comprises a displacement sensor and a pull-press sensor, the displacement sensor is a pull-wire type displacement sensor, and the sensor main body is arranged on the horizontal upper moving plate. The sensor stay wire penetrates through one end of the horizontal upper moving plate and is fixed on the motor mounting plate, and the sensor obtains the displacement change of the loading device by detecting the length change of the stay wire. The tension-compression sensor is an S-shaped strain sensor and is arranged on the pile shoe loading rod, so that the vertical force born by the pile shoe can be measured. The force and displacement of the pile shoe which are changed in real time can be collected through the sensor by the dynamic data collector, and the obtained force and displacement are output through the computer software.
The invention is described in further detail below with reference to the accompanying drawings, taking as an example experiments for analysing the influence of d=220 mm shoes on adjacent shoes as a function of the spacing L:
1. purpose of test
When the pile shoe of the ocean platform is in a fixed state, the pile shoe penetrates into soil to a certain depth, and the bearing capacity of the pile shoe can be measured. If the pile shoe with larger diameter is inserted and pulled temporarily, the soil around the original small-diameter fixed pile shoe is disturbed, and the bearing capacity of the small pile shoe is reduced according to a certain proportion under the influence of the small pile shoe. The invention can be used for researching the influence of pile shoe insertion and extraction on the bearing capacity of surrounding pile shoes and analyzing the relation between the influence and the pile shoe spacing. The pile shoe spacing L is defined as the shortest distance between the edges of two pile shoes.
2. Test preparation
The test is carried out in a model test groove with length, width and height of 2m, 2m and 2m, sand is filled in a sand groove by a sand rain method before the test is started, the sand is saturated by slow water injection, and the soil surface is leveled after the soil is filled to a specified height;
and mounting the pile shoe model on a loading rod of a loading system. Wherein the diameter d=220 mm of the plug shoe and the diameter d=93 mm of the affected shoe.
Positioning the pile shoe position according to the experimental requirement interval by utilizing a sliding guide rail, and locking by a fixing bolt; the pile shoe positions are shown in the figure, wherein the number 5 is a plug pile shoe, the number 1-4 is an affected pile shoe, the distances L between the corresponding pile shoe and the pile shoe are 440mm, 275mm, 220mm and 385mm respectively, and the ratio L/D between the corresponding pile shoe and the plug pile shoe is 2, 1.25, 1 and 1.75.
And connecting the data acquisition instrument with a computer and other equipment, debugging each sensor, and completing all preparation work before the test by computer software.
3. Test process control and data acquisition
The shoe model is slowly moved down in value by the shoe loading device to just contact the soil surface.
The four affected pile shoes start to penetrate at a constant speed, and the data acquisition instrument and the computer start to acquire the displacement and bearing capacity data of the affected pile shoes at the moment;
after the affected pile shoe is penetrated to a preset position, the pile shoe is kept static, the pile shoe is inserted into the soil, and is pulled up to leave the soil surface after being penetrated to a preset depth;
the affected shoe continues to penetrate downwards in the original position until the penetration is stopped at the predetermined position. And stopping data acquisition.
And after the test is finished, the affected pile shoe is pulled up to be away from the soil surface.
4. Experimental data processing
And (3) arranging experimental data of the affected pile shoes before and after the pile shoes are inserted and pulled out under different pile shoe distances to obtain a bearing capacity-displacement curve. And comparing the bearing capacity-displacement relation before and after the insertion and the extraction, and obtaining the bearing capacity reduction proportion of the adjacent pile shoe under the influence of the insertion and the extraction of the pile shoe. The load bearing capacity reduction rate-pitch curve is obtained in the coordinate system with the shoe pitch as the horizontal axis and the load bearing capacity reduction rate as the vertical axis, as shown in fig. 8.
Example 2
The utility model provides an offshore jack-up drilling platform plug stake is to adjacent pile shoe influence research test device, includes test soil groove 5, movable base 1, vertical girder steel 2, main horizontal girder steel 3, vice horizontal girder steel 4, plug stake shoe loading device 6 and influenced pile shoe loading device 7, and movable base main part is 2.0m1.4m0.3m's rectangle steelframe, in order to guarantee steelframe intensity, the steelframe adopts 60 x 60mm square steel pipe. The two steel frames are arranged on two sides of the test soil tank in parallel and jointly support the upper structure. The steel box is placed in the steel frame, four sides and the bottom surface of the steel box are surrounded by 1mm thick steel plates, the upper end of the steel box is opened, and counter weights can be added into the steel box when the steel box is used to provide counter forces required in experiments. 6 load casters and leveling footings are arranged at the bottom of each steel frame, the integral position of the experimental device can be adjusted, and the height of the footings is adjusted to ensure the level of the integral device.
The pile shoe positioning system consists of 2 longitudinal steel beams and 4 transverse steel beams. The girder steel all adopts the I-steel to guarantee overall structure intensity, reduces the deformation. Two parallel longitudinal steel beams are respectively arranged on the base steel frames at two sides, longitudinal guide rails are arranged on the longitudinal steel beams, longitudinal guide rail sliding blocks are arranged on the guide rails, and fixing bolts are arranged at the bottoms of the guide rail sliding blocks. The 4 transverse steel beams are mutually parallel and transversely arranged on the longitudinal guide rail, and two ends of each transverse steel beam are welded and fixed with the sliding blocks of the longitudinal guide rail. The middle 2 are main transverse beams, transverse guide rails are arranged on the main transverse beams, transverse guide rail sliding blocks are arranged on the guide rails, and fixing bolts are arranged at the bottoms of the transverse guide rail sliding blocks. And a pile inserting and pulling boot loading device is arranged between the two main beams. Two sides are auxiliary transverse beams, and 2 groups of affected pile shoe loading devices are arranged on the single-side auxiliary transverse beams. The pile shoe positioning system can enable the plug pile shoe and the 4 affected pile shoes to freely move in the horizontal plane X and the horizontal plane Y, and the distance between the plug pile shoe and the 4 affected pile shoes can be respectively adjusted after the plug pile shoe is positioned.
The shoe loading system comprises a plug shoe loading device and an affected shoe loading device. The pile shoe loading device is fixed with the transverse guide rail sliding block through an inclined supporting plate and a bolt, an integral electric cylinder drives an electric push rod and a 2 electric cylinder moving plate to load the pile shoe dd, guide rods are arranged on two sides of the electric cylinder moving plate to control the loading direction to be vertical, and the affected pile shoe loading system consists of a fixing mechanism and a moving mechanism. The fixing mechanism determines the integral position of the loading device and ensures that the loading direction is vertical, and comprises a stepping motor, a screw rod, a motor mounting plate, a lower base plate, a base plate supporting column, a lower base plate fixing bolt and a guide rod sliding pair, wherein the fixing mechanism is fixed with the auxiliary transverse beam through the lower base plate fixing bolt. The moving mechanism comprises a horizontal upper moving plate, an upper moving plate screw pair, a vertical force transmission guide rod, a horizontal lower moving plate, a flange plate and a pile shoe loading rod. Wherein the vertical force transmission guide rod of the moving mechanism passes through the sliding pair of the guide rod of the motor mounting plate and the lower backing plate. The loading system drives the screw rod to rotate through the stepping motor, the upper moving plate screw pair drives the upper moving plate to move, the upper moving plate drives the horizontal lower moving plate to move through the vertical force transmission guide rod, and the horizontal lower moving plate loads the pile shoe through the pile shoe loading rod. The bottom surface of the lower movable plate is provided with a tension-compression sensor, the other end of the sensor is connected with a pile shoe loading rod, and the pile shoe loading rod is fixed with the pile shoe model through threads. And a displacement sensor is arranged between the top plate and the upper backing plate. The loading control system consists of a stepping motor and a multichannel controller. The system can realize constant-speed loading movement with the vertical speed amplitude of 0-10 mm/s; the vertical movement amplitude is 0-35cm. The loading speed, loading depth and maintaining condition of a certain pile shoe can be independently controlled by the multi-channel controller. The measuring system comprises a tension and compression sensor, a displacement sensor, a dynamic data acquisition instrument and a computer. The purpose of this test is to study the effect of the shoe on adjacent shoes after insertion and removal. The vertical displacement of the vertical force can be measured through a tension pressure sensor and a displacement sensor which are pre-installed on the pile shoe loading rod. The dynamic data acquisition instrument is used for acquiring data, so that foundation resistance and pile shoe displacement can be acquired in real time, the acquisition precision is high, and the acquired force and displacement can be directly output through computer software.
Example 3
On the basis of the embodiment, the position of the 2 auxiliary transverse steel beams can be changed, the auxiliary transverse steel beams are arranged on one side of the main transverse steel beams, and when a plurality of groups of affected pile shoe loading devices are jointly positioned on one side of the pile shoe loading device, the interaction between the pile shoe and the affected pile shoe can be measured.
The foregoing has described exemplary embodiments of the invention, it being understood that any simple variations, modifications, or other equivalent arrangements which would not unduly obscure the invention may be made by those skilled in the art without departing from the spirit of the invention.
Claims (4)
1. Research and test device for influence of offshore jack-up drilling platform plug piles on adjacent pile shoes is characterized in that: the pile shoe loading device comprises a test soil tank, a movable base, longitudinal steel beams, a main transverse steel beam, an auxiliary transverse steel beam, a pile shoe loading device and an affected pile shoe loading device, wherein the movable base is arranged on two sides of the test soil tank, the longitudinal steel beams are arranged on the movable base, the main transverse steel beam and the auxiliary transverse steel beam which are perpendicular to the longitudinal steel beams and can move along the longitudinal steel beams are arranged between the longitudinal steel beams and span over the test soil tank, the pile shoe loading device which can move along the main transverse steel beam is arranged on the main transverse steel beam, and the affected pile shoe loading device which can move along the auxiliary transverse steel beam is arranged on the auxiliary transverse steel beam;
the movable base consists of a base steel frame and a counterweight steel box which can be embedded in the base steel frame; the number of the auxiliary transverse steel beams is 2, each auxiliary transverse steel beam is provided with 2 groups of affected pile shoe loading pile shoes, and the 2 auxiliary transverse steel beams are positioned on two sides of the main transverse steel beam;
the pile shoe loading device is used for moving on the main transverse steel beam through a longitudinal guide rail sliding block arranged at the bottom, and the affected pile shoe loading device is used for moving on the auxiliary transverse steel beam through a transverse guide rail sliding block arranged at the bottom;
the pile inserting and pulling boot loading device comprises an integral electric cylinder, an electric push rod, guide rods, an electric cylinder moving plate and inclined strut plates, wherein the electric push rod is arranged at the bottom of the integral electric cylinder, the electric cylinder moving plate is connected to the bottom of the electric push rod, guide rods used for limiting are arranged on two sides of the electric push rod, and the integral electric cylinder is connected with the transverse guide rail sliding block through the inclined strut plates arranged on two sides of the integral electric cylinder;
the affected pile shoe loading device comprises a stepping motor, a screw rod, a motor mounting plate, a lower backing plate, a backing plate supporting column, a guide rod sliding pair, a horizontal upper moving plate, an upper moving plate screw pair, a vertical force transmission guide rod, a horizontal lower moving plate, a flange plate and a pile shoe loading rod; the motor mounting plate and the lower backing plate are connected through a backing plate supporting column, the stepping motor is arranged below the motor mounting plate, a screw rod is arranged at the upper end of the stepping motor, the screw rod penetrates through the motor mounting plate and is connected with the upper horizontal moving plate through the upper moving plate screw rod, the upper horizontal moving plate is connected with the lower horizontal moving plate through a vertical force transmission guide rod penetrating through the motor mounting plate and the lower backing plate to form a whole, a flange plate is arranged on the lower end face of the lower horizontal moving plate, and a pile shoe loading rod is arranged at the lower end of the flange plate.
2. The offshore jack-up rig jack-up pile impact study test device of adjacent pile shoes according to claim 1, wherein: the movable base moves in reality through the load-carrying casters arranged at the bottom.
3. The offshore jack-up rig jack-up pile impact study test device of adjacent pile shoes according to claim 1, wherein: the bottom of the movable base is provided with leveling feet for fixing positions.
4. The offshore jack-up rig jack-up pile impact study test device of adjacent pile shoes according to claim 1, wherein: the research test device also comprises a computer, a dynamic data acquisition instrument and a sensor, wherein the computer is connected with the sensor through the dynamic data acquisition instrument, the sensor comprises a displacement sensor and a tension-compression sensor, the displacement sensor is a stay wire type displacement sensor, the sensor main body is arranged on the horizontal upper moving plate, and one end of a sensor stay wire penetrating through the horizontal upper moving plate is fixed on the motor mounting plate; the tension-compression sensor is an S-shaped strain sensor and is arranged on the pile shoe loading rod.
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| CN110106929A (en) * | 2019-06-03 | 2019-08-09 | 天津大学前沿技术研究院 | It is a kind of to plug stake to the model test apparatus and test method of neighbouring grouped piles influence |
| CN113026831B (en) * | 2021-03-26 | 2022-07-19 | 江苏科技大学 | Self-elevating platform pile shoe operation simulation experiment device and experiment control method thereof |
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| CN201908324U (en) * | 2010-12-10 | 2011-07-27 | 中国海洋石油总公司 | Slide rail type multi-position pile inserting and pulling testing device |
| CN202216789U (en) * | 2011-08-25 | 2012-05-09 | 中海油田服务股份有限公司 | Test stand of adsorption force of bottom of pile shoe of self-elevating platform |
| KR101383234B1 (en) * | 2012-11-19 | 2014-04-10 | 한국건설기술연구원 | Apparatus for repeatedly horizontal load of pile and test method for horizontal load support force of pile using the same |
| CN104099954B (en) * | 2014-07-11 | 2016-01-13 | 郑州大学 | The horizontal vertical loading device of pile foundation model testing |
| CN208844630U (en) * | 2018-08-29 | 2019-05-10 | 天津大学 | A kind of plug stake of offshore self-elevating drilling platform influences development test device to neighbouring shoe |
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| CN201857620U (en) * | 2010-11-05 | 2011-06-08 | 中国科学院武汉岩土力学研究所 | Device for conducting vertical anti-pulling static loading experiment to pile and board foundation of electricity transmission tower |
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| CN109098217A (en) | 2018-12-28 |
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