CN114965953A - Movable door test device for influence of differential settlement on soil arch effect under seepage effect - Google Patents
Movable door test device for influence of differential settlement on soil arch effect under seepage effect Download PDFInfo
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- CN114965953A CN114965953A CN202210544147.1A CN202210544147A CN114965953A CN 114965953 A CN114965953 A CN 114965953A CN 202210544147 A CN202210544147 A CN 202210544147A CN 114965953 A CN114965953 A CN 114965953A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage effect, which comprises a model box, a movable door, a model box support, a movable door support, a lifting mechanism, a support plate, a support base, an elastic component and a water supply system, wherein the model box is fixedly arranged at the top of the model box support, the movable door is covered and connected with the bottom of the model box, the movable door comprises a plurality of movable blocks which are arranged in parallel, the movable door support is arranged below the model box and supports the movable door, the lifting mechanism is arranged at the bottom of the movable door support, the support plate is arranged below the movable door, the support base is arranged below the support plate, the elastic component and the movable blocks are arranged in a one-to-one correspondence manner, the top end of the elastic component is connected with the movable blocks, and the bottom end of the elastic component is connected with the support plate. The invention has the beneficial effects that: the influence of uneven settlement of soil between piles on the soil arch effect is simulated by controlling the lifting of the movable block and the rigidity of the inner support of the spring, so that the influence of the net distance between piles on the soil arch effect is more easily simulated by seepage.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of geotechnical engineering pile-supported embankment soil arch effect, in particular to a movable door test device for testing the influence of uneven settlement on soil arch effect under the seepage effect.
[ background of the invention ]
Frequent rainstorm, frequent mountain floods and frequent water damage disasters of highway subgrades in southern areas of China occur frequently. Because the soil arch effect is the key of embankment stabilization and differential settlement control, rainfall infiltration can cause considerable serious damage to the deformation and the stabilization of a roadbed. Therefore, the research on the influence of the embankment filling seepage on the pile-supported embankment soil arch effect under the dynamic load of the train cannot be ignored.
Currently, the study of the soil arching effect is usually carried out by adopting a movable door model test. At present, the processes of load transmission and change of the shape of the soil arch under various conditions in the evolution process of the soil arch are preliminarily mastered through a movable door model test, a series of design methods are provided for guiding the design of load transmission and settlement control of the pile-supported embankment, and important influence is played in promoting the development process of the high-speed railway in China. However, in the traditional movable door model test, the pile soil settlement difference is simulated by controlling the rigid whole movable door to move downwards to a designated position, and the traditional movable door model has more limitations along with the research depth.
The existing research shows that different settlement differences have great influence on the exertion degree of the soil arching effect. However, if the pile-supported embankment soil arch effect on a specific soft soil foundation is determined through a traditional movable door model test, the model test cannot be directly and accurately matched with a specific project due to uncertainty of pile-soil differential settlement, so that the specific project is difficult to be guided and designed through the model test; in a traditional movable door model, the generation of the settlement difference is artificially controlling the movable door to actively move downwards, and in the actual engineering, the generation of the settlement difference is generated by the compression under the action of the load of the embankment due to the large rigidity difference of pile soil. The existing research shows that under the same settlement difference, the settlement difference is generated under the active or passive condition, and the great difference exists in the exertion of the soil arching effect; in the layered filling process, along with the increase of filling soil, the filling load on the movable door is increased, and the movable door is required to move downwards. However, the settlement difference of the traditional movable door model is directly determined by the boundary condition, and the movable door cannot realize the coupling process between the filling soil and the soft soil. So that the settlement difference can not be determined, and the process of continuously exerting the soil arch effect in the soil filling process is simulated; the exertion degree of the soil arch effect can be weakened to a certain extent when the cyclic load or the rainwater seepage effect acts, so the load transmitted to the soft soil between the piles can be changed, and the settlement of the soft soil between the piles is changed correspondingly. However, the settlement difference of the traditional movable door is generated by artificially controlling the downward displacement of the movable block, so that the process that the settlement difference is continuously changed when the soil arch effect is enhanced or weakened under the action of external load is difficult to simulate.
In conclusion, the original movable door test device for researching the soil arch effect is difficult to simulate a specific engineering example through a model test, the settlement difference in the test process is not accordant with the engineering reality, the process of layered filling is difficult to simulate, and the influence of seepage action on the interaction of pile soil is difficult to simulate.
[ summary of the invention ]
The invention discloses a movable door test device for simulating the influence of uneven settlement between piles on a soil arching effect by controlling the lifting of a movable block and the rigidity of an inner support of a spring, which is easier to change the clear distance between piles and can also simulate the influence of seepage on the soil arching effect, thereby effectively solving the technical problems related to the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a floating gate test device of inhomogeneous settlement to soil hunch effect influence under seepage flow effect, includes that mold box, floating gate, mold box support, floating gate support, elevating system, backup pad, support base, elastic component and water supply system, be equipped with the water inlet on the lateral wall of mold box just the mold box set firmly in mold box supports the top, the mold box bottom is the opening form setting, the floating gate lid connect in the opening part of mold box bottom, the floating gate includes the movable block that the polylith set up side by side, the movable block is including the removal movable block that is used for simulating soil position department between the stake and the fixed movable block that is used for simulating stake position department, the floating gate support install in mold box below and be used for supporting the floating gate and control the lift of floating gate, elevating system install in the floating gate supports the bottom with control the floating gate supports the lift, the backup pad set up in the below of dodge gate, support the base install in the below of backup pad and control the lift of backup pad, elastic component's quantity is a plurality of, and is a plurality of elastic component and polylith the movable block one-to-one sets up, and every elastic component top is connected the movable block, the bottom is connected the backup pad, water supply system includes rainer, water pressure regulator, water pump and water storage box, the water inlet with the rainer passes through respectively water pressure regulator with the water pump intercommunication the water storage box, the rainer is including being located the sprinkler bead of mold box top with be used for with the sprinkler bead supports in the rainer of mold box top supports.
As a preferable improvement of the present invention, the water spray heads are atomizing rain spray heads, and the number of the water spray heads is 28 and the water spray heads are arranged above the mold box in a manner of 4 × 7.
As a preferred improvement of the invention, the rain deflector support comprises a height-adjustable lifting column with a bottom end fixed to the mold box support and a cross beam fixed to a top end of the lifting column for mounting the sprinkler head.
As a preferable improvement of the present invention, bolt holes are formed in the movable block and the side wall of the mold box corresponding to the movable block, and the movable block is fixed to the side wall through a bolt.
As a preferable improvement of the present invention, the movable block is a T-shaped movable block, and the fixed movable block is a square movable block.
As a preferable improvement of the present invention, the number of the lifting mechanisms is two, and the two lifting mechanisms are respectively disposed at the left and right ends of the movable door support.
The screw rod is connected with the two lifting mechanisms to control the two lifting mechanisms to synchronously lift.
As a preferred improvement of the invention, the elastic component comprises a spring and two magnets fixedly connected with the upper end and the lower end of the spring, the elastic component is fixed with the movable block and the supporting plate in a magnetic attraction manner through the magnets, and the rigidity of the springs of the elastic components can be the same or different.
As a preferable improvement of the present invention, the elastic component includes a metal sheet disposed between the magnet and the spring, and the magnet is magnetically fixed on the metal sheet.
As a preferable improvement of the present invention, the number of the support bases is four, and four of the support bases are respectively disposed at four corner positions of the support plate.
The invention has the following beneficial effects:
(1) by arranging the water supply system, the influence of transverse seepage and rainfall seepage on the soil arch effect can be simulated;
(2) by arranging the lifting support with adjustable height, the rainfall height can be controlled, and the influence of different rainfall on the soil arch effect can be simulated;
(3) the method for controlling the settlement of the movable door by using the springs is changed, the springs with higher rigidity are placed under the movable blocks (simulation piles), the springs with lower rigidity are placed under the other movable blocks (simulation soil), the rigidity difference of the pile soil is simulated, the settlement of the pile is realized, and the influence of the settlement of the pile top on the soil arch effect is further researched;
(4) the supporting bases with adjustable heights are arranged at the four corners of the supporting plate below the movable block, so that the supporting plate can be kept horizontal by adjusting the supporting bases when the ground is uneven; in addition, spring length errors caused by a machining process can be considered, and the requirement on machining precision can be lowered through the support base with the adjustable height, so that the lengths of all springs in the same group of tests are kept consistent;
(5) when the spring stiffness of each movable block among the piles is the same, the non-uniform settlement of the soft soil among the piles can be simulated, and when the spring stiffness of each movable block among the piles is different, the non-uniform settlement of the soft soil among the piles can be simulated;
(6) the movable block locked by the bolt can be used as a support bracket, and the movable block under the filled soil can move and can also be fixed, so that the clear distance between the piles can be changed conveniently;
(7) the movable blocks for moving soft soil between the simulation piles are made into T-shaped movable blocks, interaction between the movable blocks can be effectively reduced, the fixed movable blocks of the simulation piles are square movable blocks, and the movable blocks are separated from each other when the difference in settlement is larger than the thickness of wing plates of the T-shaped movable blocks, so that sand leakage is easily caused.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a three-dimensional structure diagram of a movable door testing device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the invention;
FIG. 2 is a schematic diagram of a movable door testing apparatus for testing the influence of differential settlement on the soil arching effect under the seepage action according to the present invention;
FIG. 3 is a top view structural diagram of a movable door testing apparatus for testing the influence of differential settlement on the soil arching effect under the seepage action according to the present invention;
FIG. 4 is a side view structural diagram of a movable door testing device for testing the influence of uneven settlement on the soil arching effect under the seepage action according to the present invention;
FIG. 5 is a view showing the structure of the movable block supported on the supporting plate by the elastic member according to the present invention; (ii) a
FIG. 6 is a layout diagram of a movable door testing device and a vision measuring system for the influence of uneven settlement on the soil arching effect under the seepage action of the present invention;
wherein: 1-transparent toughened glass; 2-a steel plate; 3, moving the movable block; 4, fixing the movable block; 5, inserting a bolt; 51-bolt hole; 6-supporting a model box; 7, supporting a movable door; 8, a lifting mechanism; 9-a spring; 10-a support base; 11-a support plate; 12-universal wheel; 13-a magnet; 14-a metal sheet; 81-screw rod; 15-a water pressure regulator; 16-a water pump; 17-a screw; 18-sprinkler head; 19-rain falls ware support.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-4, the invention provides a movable door test device for testing the influence of uneven settlement on the soil arch effect under the seepage effect, which comprises a model box 1, a movable door, a model box support 6, a movable door support 7, a lifting mechanism 8, a support plate 11, a support base 10, an elastic component and a water supply system, wherein a water inlet 2 is arranged on the side wall of the model box, the model box is fixedly welded on the top of the model box support 6, and certainly, a water outlet can be arranged on the side wall for draining water. The bottom of the model box support 6 is provided with a plurality of universal wheels 12, and the bottom of the model box 1 is arranged in an opening shape. Specifically, the side wall of the model box 1 is formed by a plurality of pieces of transparent toughened glass 1 in a surrounding mode, and the joints of the adjacent transparent toughened glass 1 are connected through glass cement, so that the joints of the side walls of the model box can be prevented from water leakage.
It should be further noted that, the top and bottom of the filling of the mold box 1 are provided with geotechnical materials, the upper geotechnical material simulates the water absorption capacity of a road surface structure, the lower geotechnical arch material simulates the water absorption capacity of soft soil, and the seepage rate of inlet and outlet water can be effectively controlled by changing the permeability of the geotechnical material.
Referring to fig. 5 again, the dodge gate lid connect in the opening part of model box 1 bottom, the dodge gate includes the polylith and sets up side by side the movable block, and is further, the movable block is including the removal movable block 3 that is used for simulating soil position department between the stake and the fixed movable block 4 that is used for simulating stake position department, it is 5 for T type movable block and quantity to remove movable block 3, fixed movable block 4 is square movable block and quantity is 2, like this, through 5 remove movable block 3 can simulate the uneven settlement of weak soil. Bolt holes 51 are formed in the positions of the movable blocks 3 and the side walls corresponding to the movable blocks 3, the movable blocks are fixed to the side walls through bolts 5, the five movable blocks 3 are fixed through the bolts 5 to change the clear distance between piles, and the requirement that the clear distance between piles is easy to change is met.
The movable block is filled in the opening at the bottom of the model box 1, and the movable block is an iron block with certain rigidity.
The movable door support 7 is installed below the mold box and used for supporting the movable door and controlling the lifting of the movable door. The arrangement of the movable door support 7 can ensure that the movable door support 7 is used for supporting the movable door during soil filling (soil filling load is completely borne by the movable door support 7), after soil filling is finished, the movable door support 7 is slowly controlled to move downwards, the load can be slowly transferred to the spring 9, if the movable door support 7 is not arranged during soil filling, the soil filling load directly acts on the spring 9, the movable door can sink too fast, the spring 9 can sink rapidly due to the load, excessive rebound is generated, and even the spring is bent and damaged.
The lifting mechanism 8 is arranged at the bottom of the movable door support 7 to control the movable door support 7 to lift. Specifically, the number of the lifting mechanisms 8 is two, the two lifting mechanisms 8 are respectively arranged at the left end and the right end of the movable door support 7, and the device further comprises a screw 81 which is connected with the two lifting mechanisms 8 to control the two lifting mechanisms 8 to synchronously lift. Specifically, the lifting mechanism 8 is a jack.
The backup pad 11 set up in the below of dodge gate, support base 10 install in the below of backup pad 11 and control the lift of backup pad 11, like this, through the height of freely adjusting backup pad 11 to the adaptation different length spring 9, ground rigid is arranged in to the lower extreme of supporting base 10. Specifically, the number of the support bases 10 is four, the four support bases 10 are respectively arranged at four corner positions of the support plate 11, and the support plate 11 is a rectangular iron plate.
The quantity of elastic component is a plurality of, and is a plurality of elastic component and polylith the movable block one-to-one sets up, and every elastic component top is connected the movable block, the bottom is connected backup pad 11.
Referring to fig. 5 again, specifically, the elastic component includes a spring 9 and two magnets 13 fixedly connected to the upper and lower ends of the spring 9, the elastic component is magnetically attracted and fixed to the movable block and the supporting plate 11 through the magnets 13, and the rigidity of the spring 9 of the elastic component may be the same or different.
Further, the elastic component comprises a metal sheet 14 arranged between the magnet 13 and the spring 9, the magnet 13 is fixed on the metal sheet 14 in a magnetic attraction manner, and the metal sheet 14 is fixed with the spring 9 in a welding manner.
The water supply system comprises a rain fall device, a water pressure regulator 15, a water pump 16 and a water storage tank 17, the water inlet 2 and the rain fall device are respectively communicated with the water storage tank 17 through the water pressure regulator 15 and the water pump 16, the rain fall device comprises a water spray head 18 positioned above the model box 1 and a rain fall device support 19 used for supporting the water spray head 18 above the model box 1, and particularly, the distance between the water spray head 18 and the top of the model box 1 is about 500mm and 1500 mm. Of course, it should be noted that the components of the water supply system are communicated with each other through water pipes.
The water pressure regulator 15 is arranged to regulate the pressure of the water sprayed from the sprinkler head 18, and of course, a water pressure gauge may be arranged beside the sprinkler head 18 to monitor the pressure, so as to realize the automatic control of the water pressure.
Further, the sprinkler heads 18 are atomizing rainfall sprayers, and the number of the sprinkler heads 18 is 28 and is arranged above the model box 1 in a 4 × 7 manner.
Further, the rainer support 19 includes a height-adjustable lifting pillar 191 having a bottom end fixed to the mold box support 6, and a cross beam 192 fixed to a top end of the lifting pillar 191 for mounting the sprinkler head 18, where it should be noted that the cross beam 192 is a hollow steel pipe and has functions of delivering water, carrying, fixing the sprinkler head, and the like.
The lifting support 191 is formed by connecting a small-diameter solid steel pipe with a thread on the outer wall and a large-diameter hollow steel pipe with a thread on the inner cavity, so that the height can be adjusted, and the rainfall height can be controlled.
In the specific application example of the movable door test device for testing the influence of the uneven settlement on the soil arching effect under the seepage effect, the size of a model can be determined according to the reduction scale ratio of 1:6-1:8 according to the practical engineering case, and the movable door is designed for carrying out model test and consists of square movable blocks with the width of 50mm, the height of 100mm and the thickness of 250mm and T-shaped movable blocks with the same size, the thickness of wing plates of 20mm and the thickness of web plates of 30 mm. The lifting range of the movable door is 100mm, and the displacement control of the movable door is mainly controlled by the movable door support 7, the spring 9 and the support base 10 which are connected with the jack together. According to the test requirements, springs 9 with different rigidity and different lengths can be manufactured, placed below the movable block and above the supporting plate 11, and the fixing and displacement of the movable block are controlled by combining the arrangement of the plug pins 5, so that the aim of simulating the influence of different factors on the soil arch effect is fulfilled.
In addition, when the influence of uneven settlement on the soil arching effect under the seepage action needs to be simulated, the influence of transverse seepage and rainfall seepage on the soil arching effect can be simulated by controlling the water supply system.
Referring to fig. 6, the working principle of the movable door testing device for testing the influence of uneven settlement on the soil arch effect under the seepage action provided by the invention is as follows:
when the influence of different factors on the soil arching effect needs to be simulated, the spring 9 is connected with the movable block and the supporting plate 11 respectively. The height of the lifting mechanism 8 is adjusted, so that the movable door support 7 props against the movable block to rise, and the movable door support rises until the top surface of the T-shaped movable block is flush with the top surface of the square movable block. The elastic component on the adjustable supporting base 10 is then connected with the movable block. The method of layered filling is adopted, soil is filled in the model box 1, the soil pressure box is embedded, the compactness is controlled according to the quality and the volume, and after the soil filling is finished, laser displacement meters are arranged at corresponding positions of the upper part and the lower part of the model box 1 and are used for measuring the displacement of the movable door and the settlement of the top surface of the filled soil. A vision measuring system 20 such as a camera is arranged right in front of the model box 1, then the lifting mechanism 8 is controlled to move downwards slowly until the movable door support 7 and the movable block 3 are empty, the target area and the top surface of the filled soil need to be tracked and measured during the descending process of the lifting mechanism 8, finally the dynamic load is applied to the top surface of the filled soil, and the target area and the top surface of the filled soil are tracked and measured during the loading process.
When the influence of different factors under the seepage action on the soil arching effect needs to be further simulated, the power supply of a water supply system needs to be connected, the water pressure regulator 15 is regulated, the water supply flow and the pressure are controlled to reach preset values, and the water pressure value of a water pressure gauge on the rainfall device is recorded; wiping water in the model box 1, preparing data acquisition, connecting a sensor, labeling, resetting and recording a zero value; laying geotextile (the geotextile is used for controlling the water outlet rate of rainfall at the bottom of the filled soil and simulating the water absorption capacity of soft soil); filling sandy soil in layers and installing test elements at specified positions, wherein the test elements comprise but are not limited to a soil pressure cell, a tensiometer, a volume water content tester, a laser displacement meter and the like; laying geotextile (the geotextile is used for controlling the water inflow rate of rainfall on the top of the filled soil and simulating the water absorption capacity of the pavement structure layer); PIV (DIC) was prepared for observing the evolution of the arches under the effect of rainfall. And then controlling the lifting mechanism 8 to slowly move downwards until the movable door support 7 and the movable block 3 are empty, controlling the lifting mechanism 8 to perform tracking measurement on a target area and a filled soil top surface during descending, finally applying a dynamic load on the filled soil top surface, and performing tracking measurement on the target area and the filled soil top surface during loading.
The invention has the following beneficial effects:
(1) by arranging the water supply system, the influence of transverse seepage and rainfall seepage on the soil arch effect can be simulated;
(2) by arranging the lifting support with adjustable height, the rainfall height can be controlled, and the influence of different rainfall on the soil arch effect can be simulated;
(3) the method for controlling the settlement of the movable door by using the springs is changed, the springs with higher rigidity are placed under the movable blocks (simulation piles), the springs with lower rigidity are placed under the other movable blocks (simulation soil), the rigidity difference of the pile soil is simulated, the settlement of the pile is realized, and the influence of the settlement of the pile top on the soil arch effect is further researched;
(4) the supporting bases with adjustable heights are arranged at the four corners of the supporting plate below the movable block, so that the supporting plate can be kept horizontal by adjusting the supporting bases when the ground is uneven; in addition, spring length errors caused by a machining process can be considered, and the requirement on machining precision can be lowered through the support base with the adjustable height, so that the lengths of all springs in the same group of tests are kept consistent;
(5) when the spring stiffness of each movable block among the piles is the same, the non-uniform settlement of the soft soil among the piles can be simulated, and when the spring stiffness of each movable block among the piles is different, the non-uniform settlement of the soft soil among the piles can be simulated;
(6) the movable block locked by the bolt can be used as a support bracket, and the movable block under the filled soil can move and can also be fixed, so that the clear distance between the piles can be changed conveniently;
(7) the movable blocks for moving soft soil between the simulation piles are made into T-shaped movable blocks, interaction between the movable blocks can be effectively reduced, the fixed movable blocks of the simulation piles are square movable blocks, and the movable blocks are separated from each other when the difference in settlement is larger than the thickness of wing plates of the T-shaped movable blocks, so that sand leakage is easily caused.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A movable door test device for testing influence of uneven settlement on soil arch effect under seepage action is characterized by comprising a model box, a movable door, a model box support, a movable door support, a lifting mechanism, a support plate, a support base, an elastic component and a water supply system, wherein a water inlet is formed in the side wall of the model box, the model box is fixedly arranged at the top of the model box support, the bottom of the model box is in an open shape, the movable door is covered at the opening at the bottom of the model box and comprises a plurality of movable blocks arranged in parallel, each movable block comprises a movable block capable of moving up and down and a fixed movable block fixed on the model box, the movable door support is arranged below the model box and used for supporting the movable door and controlling the lifting of the movable door, the lifting mechanism is arranged at the bottom of the movable door support to control the lifting of the movable door support, the backup pad set up in the below of dodge gate, support the base install in the below of backup pad and control the lift of backup pad, elastic component's quantity is a plurality of, and is a plurality of elastic component and polylith the movable block one-to-one sets up, and every elastic component top is connected the movable block, the bottom is connected the backup pad, water supply system includes rainer, water pressure regulator, water pump and water storage box, the water inlet with the rainer passes through respectively water pressure regulator with the water pump intercommunication the water storage box, the rainer is including being located the sprinkler bead of mold box top with be used for with the sprinkler bead supports in the rainer of mold box top supports.
2. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 1, wherein: the sprinkler bead is atomizing rainfall shower nozzle, the quantity of sprinkler bead is 28 and arranges in the top of mold box according to 4 x 7.
3. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 1, wherein: the rain fall device support comprises a height-adjustable lifting support and a cross beam, wherein the bottom end of the lifting support is fixedly arranged on the model box support, and the cross beam is fixedly arranged at the top end of the lifting support and used for installing the sprinkler head.
4. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 1, wherein: bolt holes are formed in the positions of the movable block and the side wall of the model box corresponding to the movable block, and the movable block is fixed to the side wall through a bolt.
5. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 1, wherein: the movable blocks are T-shaped movable blocks, and the number of the movable blocks is 5; the fixed movable blocks are square movable blocks, and the number of the fixed movable blocks is 2.
6. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 1, wherein: the lifting mechanisms are arranged at the left end and the right end of the movable door support respectively.
7. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 6, wherein: the lifting mechanism is connected with the screw rod, and the screw rod is connected with the two lifting mechanisms to control the two lifting mechanisms to synchronously lift.
8. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 1, wherein: the elastic component comprises a spring and two magnets fixedly connected with the upper end and the lower end of the spring, the elastic component is fixed by the magnets, the movable block and the supporting plate in a magnetic attraction mode, and the rigidity of the spring of the elastic component can be the same or different.
9. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 8, wherein: the elastic component comprises a metal sheet arranged between the magnet and the spring, and the magnet is fixed on the metal sheet in a magnetic attraction mode.
10. The movable door test device for testing the influence of uneven settlement on the soil arching effect under the seepage action of the seepage machine as claimed in claim 1, wherein: the number of the supporting bases is four, and the supporting bases are respectively arranged at four corner positions of the supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210544147.1A CN114965953B (en) | 2022-05-19 | 2022-05-19 | Movable door test device for influence of differential settlement on soil arch effect under seepage effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210544147.1A CN114965953B (en) | 2022-05-19 | 2022-05-19 | Movable door test device for influence of differential settlement on soil arch effect under seepage effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114965953A true CN114965953A (en) | 2022-08-30 |
| CN114965953B CN114965953B (en) | 2023-07-21 |
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| CN115343448A (en) * | 2022-10-18 | 2022-11-15 | 湖南大学 | Novel movable door model test device and method based on soil arch effect research |
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