CN110158632B - Anti-settling foundation structure of soft soil foundation and method thereof - Google Patents
Anti-settling foundation structure of soft soil foundation and method thereof Download PDFInfo
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- CN110158632B CN110158632B CN201910450895.1A CN201910450895A CN110158632B CN 110158632 B CN110158632 B CN 110158632B CN 201910450895 A CN201910450895 A CN 201910450895A CN 110158632 B CN110158632 B CN 110158632B
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- push rod
- groove
- connecting cylinder
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/26—Compacting soil locally before forming foundations; Construction of foundation structures by forcing binding substances into gravel fillings
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
Abstract
The invention discloses a settlement-preventing foundation structure of a soft soil foundation and a method thereof, which relate to the technical field of building construction.A technical scheme is characterized by comprising a foundation and a plurality of groups of settlement-preventing devices arranged in the foundation, wherein each group of settlement-preventing devices comprises a mounting hole, a connecting cylinder arranged in the mounting hole and a plurality of through holes uniformly distributed on the peripheral surface of the connecting cylinder along the circumferential direction of the connecting cylinder; a butt joint plate is connected in each through hole in a sliding manner along the radial direction of the connecting cylinder, and an elastic assembly for limiting the butt joint plate is installed at the bottom of the connecting cylinder; a cylindrical push rod for pushing the abutting plate to move is arranged in the connecting cylinder, an inwards concave first cambered surface is arranged at one end, close to the push rod, of the abutting plate, an outwards convex second cambered surface is arranged at the other end of the abutting plate, and the first cambered surface abuts against the outer peripheral surface of the push rod; the bottom of push rod is provided with the round platform piece, is provided with the actuating mechanism who is used for driving the push rod removal on the ground. The invention can reduce the possibility of the foundation settlement by arranging the settlement preventing device.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an anti-settling foundation structure of a soft soil foundation and a method thereof.
Background
The acceleration of the urbanization construction process makes civil engineering construction increase continuously, and soft soil foundation phenomenon is more and more common simultaneously. If the foundation soil is soft soil, the bearing capacity and the shearing resistance of the foundation soil are weak, particularly when the foundation soil is vibrated or loaded greatly, the strength of the foundation can be obviously reduced and is in a flowing state, and then the local or integral shearing damage of the foundation is caused to form the sideslip of the soft soil layer.
In the process of treating large-area soft soil foundation, the drainage way is usually adopted to improve the soil strength and achieve the purpose of reducing soil settlement. The cushion layer processing technology is commonly called a cushion layer method. The principle is as follows: a drainage surface is arranged between the filling soil and the foundation, so that pore water in foundation soil is rapidly drained after the foundation is subjected to filling soil load, the foundation consolidation speed is accelerated, the bearing capacity of the foundation is improved, the settlement is reduced, the local shear deformation of the foundation is prevented, and the frost heaving condition is reduced. It should be noted that the material used should be clean medium grit with a mud content of no more than 5%, or natural grade grit with a maximum particle size of less than 5 cm. Similar drainage treatment processes include plastic drainage plates combined with preloading and the like.
However, in the above-mentioned foundation, the effective stress of the foundation is increased due to the discharge of the water, and the foundation is generally settled, so that a bedding layer for increasing the height of the foundation may be laid.
Disclosure of Invention
In view of the disadvantages of the prior art, an object of the present invention is to provide a foundation structure for preventing settlement of a soft soil foundation, which can reduce the possibility of settlement of the foundation by providing a settlement prevention device.
In order to achieve the purpose, the invention provides the following technical scheme: a settlement-preventing foundation structure of a soft soil foundation comprises a foundation and a plurality of groups of settlement-preventing devices arranged in the foundation, wherein each group of settlement-preventing devices comprises a mounting hole formed in the foundation, a connecting cylinder arranged in the mounting hole and a plurality of through holes uniformly distributed on the outer peripheral surface of the connecting cylinder along the circumferential direction of the connecting cylinder; a butt joint plate is connected in each through hole in a sliding manner along the radial direction of the connecting cylinder, and an elastic assembly for limiting the butt joint plate is installed at the bottom of the connecting cylinder; a cylindrical push rod for pushing the abutting plate to move is arranged in the connecting cylinder, an inwards concave first cambered surface is arranged at one end, close to the push rod, of the abutting plate, an outwards convex second cambered surface is arranged at the other end of the abutting plate, and the first cambered surface abuts against the outer peripheral surface of the push rod; the bottom of push rod is provided with the round platform piece, be provided with the actuating mechanism who is used for driving the push rod removal on the ground.
By adopting the technical scheme, when the anti-settling device needs to be installed, the anti-settling device is firstly placed in the installation hole through the crane, then the push rod is placed among the plurality of abutting plates through the crane, and at the moment, under the action of the circular truncated cone block, one part of the bottom of the push rod can enter a space surrounded by the plurality of abutting plates; then, the push rod is pressed into the connecting cylinder through the driving mechanism, and the push rod moves to drive the abutting plate to abut against the inner wall of the mounting hole, so that soil on the inner wall of the mounting hole can be compacted; in conclusion, the anti-sedimentation device can reduce the possibility of sedimentation of the foundation.
The invention is further configured to: the elastic assembly comprises a sliding block fixedly connected to the bottom of the abutting plate, a sliding groove formed in the bottom of the connecting cylinder and used for the sliding block to slide along the radial direction of the connecting cylinder, a guide pillar fixedly connected in the sliding groove and arranged along the radial direction of the connecting cylinder, and a first spring sleeved on the guide pillar; the guide post penetrates through the sliding block, and the sliding block is connected to the guide post in a sliding manner; one end of the first spring is welded on the inner wall of one end, close to the through hole, of the sliding groove, and the other end of the first spring is welded on one side, close to the through hole, of the sliding block.
By adopting the technical scheme, the sliding groove has a guiding function on the sliding block, so that the possibility of deviation of the abutting plate in the radial sliding process along the connecting cylinder can be reduced; the guide post has a limiting effect on the sliding block, so that the possibility of separation of the abutting plate and the connecting cylinder can be reduced, and the anti-settling device is convenient to transport; through setting up first spring, can exert certain pressure to the slider to can reduce the butt joint board and take place the possibility that removes at the connecting cylinder.
The invention is further configured to: an elastic belt is arranged between every two adjacent abutting plates, slots are respectively formed in the opposite inner sides of every two adjacent abutting plates, two ends of each elastic belt are respectively inserted into the two slots, and a fixing mechanism used for fixing one end of each elastic belt is arranged on each abutting plate.
Through adopting above-mentioned technical scheme, when the butt plate supported the pressure to the mounting hole inner wall, the elastic webbing can effectively stop the soil body to the gap department motion between two butt plates to can reduce the possibility that the soil body of mounting hole inner wall takes place to collapse.
The invention is further configured to: the fixing mechanism comprises a plurality of groups of fixing assemblies which are sequentially arranged on one side of the abutting plate along the vertical direction; each group of fixing assemblies comprises a sinking groove which is formed in one side of the abutting plate and communicated with the slot, a fixing block vertically and fixedly connected in the sinking groove, a bolt which is connected to the fixing block in a sliding mode along the width direction of the sinking groove, a square block which is sleeved on the bolt and connected to the sinking groove in a sliding mode along the width direction of the sinking groove, a second spring which is sleeved on the bolt, a first jack which is formed in one side of the elastic belt and a second jack which is arranged corresponding to the first jack and is formed in one side of the slot far away from the sinking groove; the bolts penetrate through the fixing block, one ends of the bolts close to the slots are sequentially inserted into the first insertion holes and the second insertion holes, and a pull rod is fixedly connected between every two adjacent bolts; the square block is positioned between the fixed block and the slot; and two ends of the second spring are fixedly connected to the square block and the fixed block respectively.
By adopting the technical scheme, when the elastic belt needs to be installed, the bolt is pulled by pulling the pull rod, the bolt moves to separate the bolt from the second jack, and then the elastic belt can be installed; after the elastic band is installed, the pull rod is loosened, and the square block pushes the plug pin to be sequentially inserted into the first jack and the second jack under the action of the second spring; through setting up fixed establishment, be convenient for install the elastic webbing, therefore can reduce operating personnel's intensity of labour.
The invention is further configured to: the driving mechanism comprises a rack, a plurality of non-collinear rollers arranged at the bottom of the rack, a first hydraulic cylinder vertically arranged at the top of the rack and a connecting assembly arranged at the bottom of a piston rod of the first hydraulic cylinder and used for connecting a push rod.
By adopting the technical scheme, when the push rod needs to be driven to move, the push rod is connected to the piston rod of the first hydraulic cylinder through the connecting assembly, and then the push rod is driven to move downwards through the piston rod of the first hydraulic cylinder; through setting up actuating mechanism, be convenient for drive push rod and remove, therefore can reduce operating personnel's intensity of labour.
The invention is further configured to: the connecting component comprises a connecting plate which is fixedly connected to the bottom of the piston rod of the first hydraulic cylinder and is horizontally arranged, and two second hydraulic cylinders which are symmetrically arranged on one side of the connecting plate away from the first hydraulic cylinder; and arc-shaped plates are fixedly connected to the piston rod of each second hydraulic cylinder, the inner peripheral surface of each arc-shaped plate abuts against the outer peripheral surface of the push rod, and the two arc-shaped plates form a circular ring with the inner diameter equal to the diameter of the top surface of the push rod.
By adopting the technical scheme, when the push rod is required to be connected to the piston rod of the first hydraulic cylinder, the two arc-shaped plates are positioned at two sides of the top of the push rod by moving the driving mechanism, and then the piston rod of the second hydraulic cylinder pushes the arc-shaped plates to clamp the push rod; through setting up coupling assembling, be convenient for make the piston rod fixed connection of push rod and first pneumatic cylinder to can reduce the connecting plate and promote the push rod and remove the possibility that the in-process push rod takes place to deviate.
The invention is further configured to: the foundation is characterized in that end-to-end grooves are dug in the periphery of the foundation, an annular concrete layer is laid in each groove, a sponge layer is arranged between each concrete layer and each groove, and a plurality of annular pipes are sequentially embedded in each concrete layer along the vertical direction; one side of the annular pipe, which is close to the sponge layer, is communicated with a plurality of water inlet pipes which are obliquely arranged upwards, and one ends of the water inlet pipes, which are far away from the annular pipe, penetrate through the concrete layer and are inserted into the sponge layer; one side that the annular pipe is close to the slot is provided with the drain pipe that a plurality of downward sloping set up, the outside that the one end that the annular pipe was kept away from to the drain pipe runs through concrete layer sets up, and is a plurality of the drain pipe sets up respectively in the corner of slot, the water catch bowl has been seted up to the corner of slot.
By adopting the technical scheme, the sponge layer is arranged, so that water in the foundation layer can be conveniently absorbed; the water in the sponge layer is conveniently discharged by arranging the water inlet pipe, the annular pipe and the water discharge pipe, so that the strength of a foundation soil body can be improved; moreover, through setting up concrete layer, when the installation prevents subsiding the device, can reduce the influence of the soil body to peripheral building.
In view of the defects of the prior art, another object of the present invention is to provide a method for preventing settlement of a soft soil foundation, which can reduce the possibility of settlement of the foundation by installing a settlement prevention device.
In order to achieve the purpose, the invention provides the following technical scheme: a soft soil foundation anti-settling method comprises the following steps: the method comprises the following steps: digging a groove on the periphery of the foundation; step two: paving a sponge layer on one side of the groove close to the foundation; step three: paving a reinforcement cage in the groove, erecting an annular pipe, a water inlet pipe and a water drain pipe in the reinforcement cage, and then pouring concrete into the reinforcement cage to form a concrete layer; step four: drilling a plurality of mounting holes on the foundation by a drilling machine;
step five: the anti-settling device is placed on the mounting hole through a crane, the push rod is placed between the plurality of abutting plates through the crane, and at the moment, under the action of the circular truncated cone block, one part of the bottom of the push rod can enter a space surrounded by the plurality of abutting plates; step six: then the driving mechanism is moved above the anti-settling device, so that the two arc-shaped plates are positioned at two sides of the top of the push rod, then the piston rod of the second hydraulic cylinder pushes the arc-shaped plates to clamp the push rod, and at the moment, whether the position of the push rod is in a vertical state or not can be observed by observing the fit condition of the arc-shaped plates and the peripheral surface of the push rod; when the push rod is in a vertical state, the piston rod of the first hydraulic cylinder drives the connecting plate to move, the connecting plate moves to drive the push rod to move, and the push rod moves to drive the abutting plate to move towards the inner wall of the mounting hole, so that soil on the inner wall of the mounting hole is compacted; step seven: after all the anti-settling devices are installed, paving a layer of concrete connected with the concrete layer on the foundation; step eight: and pumping out the water in the water collecting tank by a water pump.
By adopting the technical scheme, the soil body in the foundation can be conveniently compacted, so that the possibility of settlement of the foundation can be reduced.
In summary, compared with the prior art, the invention has the following beneficial effects:
1. when the anti-settling device needs to be installed, the anti-settling device is placed in the installation hole through the crane, then the push rod is placed among the plurality of abutting plates through the crane, and at the moment, under the action of the circular truncated cone block, one part of the bottom of the push rod can enter a space surrounded by the plurality of abutting plates; then, the push rod is pressed into the connecting cylinder through the driving mechanism, and the push rod moves to drive the abutting plate to abut against the inner wall of the mounting hole, so that soil on the inner wall of the mounting hole can be compacted; in conclusion, the anti-sedimentation device can reduce the possibility of sedimentation of the foundation;
2. when the abutting plates abut against the inner wall of the mounting hole, the elastic belt can effectively prevent soil from moving to a gap between the two abutting plates, so that the possibility of collapse of the soil on the inner wall of the mounting hole can be reduced;
3. the sponge layer is arranged, so that water in the foundation layer can be absorbed conveniently; the water in the sponge layer is conveniently discharged by arranging the water inlet pipe, the annular pipe and the water discharge pipe, so that the strength of a foundation soil body can be improved; moreover, through setting up concrete layer, when the installation prevents subsiding the device, can reduce the influence of the soil body to peripheral building.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a schematic view showing the structure of the anti-settling device in the embodiment;
FIG. 3 is an exploded view of the embodiment showing the abutment block and the connecting barrel;
FIG. 4 is a schematic view showing the structure of the elastic member in the embodiment;
FIG. 5 is an exploded view of the embodiment highlighting the first receptacle;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
FIG. 7 is a schematic view showing the structure of a driving mechanism according to the embodiment;
FIG. 8 is a schematic view showing the structure of a prominent ring tube in the embodiment.
In the figure: 1. a foundation; 2. an anti-settling device; 21. mounting holes; 22. a connecting cylinder; 23. a through hole; 24. a butt joint plate; 241. a first arc surface; 242. a second arc surface; 243. a slot; 25. a push rod; 26. a round table block; 3. an elastic component; 31. a slider; 32. a chute; 33. a guide post; 34. a first spring; 4. an elastic band; 41. a protrusion; 5. a fixing assembly; 51. sinking a groove; 52. a fixed block; 53. a bolt; 54. a square block; 55. a second spring; 56. a first jack; 57. a second jack; 58. a pull rod; 6. a drive mechanism; 61. a frame; 62. a roller; 63. a first hydraulic cylinder; 64. a connecting assembly; 641. a connecting plate; 642. a second hydraulic cylinder; 643. an arc-shaped plate; 7. a trench; 71. a concrete layer; 711. an annular tube; 712. a water inlet pipe; 713. a drain pipe; 72. a sponge layer; 73. a water collection tank.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b): a settlement-preventing foundation structure of a soft soil foundation is shown in figure 1 and comprises a foundation 1 and a plurality of groups of settlement-preventing devices 2 arranged in the foundation 1; as shown in fig. 2 and 3, each set of anti-settling device 2 includes a mounting hole 21 opened on the foundation 1, a connecting cylinder 22 disposed in the mounting hole 21, and a plurality of through holes 23 uniformly distributed on the outer circumferential surface of the connecting cylinder 22 along the circumferential direction of the connecting cylinder 22; an abutting plate 24 is connected in each through hole 23 in a sliding manner along the radial direction of the connecting cylinder 22, and an elastic assembly 3 for limiting the abutting plate 24 is installed at the bottom of the connecting cylinder 22; a cylindrical push rod 25 for pushing the abutting plate 24 to move is arranged in the connecting cylinder 22, an inward concave first cambered surface 241 is arranged at one end, close to the push rod 25, of the abutting plate 24, an outward convex second cambered surface 242 is arranged at the other end of the abutting plate 24, and the first cambered surface 241 abuts against the outer peripheral surface of the push rod 25; the bottom end of the push rod 25 is fixedly connected with a circular table block 26, and the foundation 1 is provided with a driving mechanism 6 for driving the push rod 25 to move. When the anti-settling device 2 needs to be installed, the anti-settling device 2 is firstly placed into the installation hole 21 through a crane, then the push rod 25 is placed among the plurality of abutting plates 24 through the crane, and at the moment, under the action of the circular truncated cone block 26, a part of the bottom of the push rod 25 can enter a space surrounded by the plurality of abutting plates 24; then, the push rod 25 is pressed into the connecting cylinder 22 through the driving mechanism 6, the push rod 25 moves to drive the abutting plate 24 to abut against the inner wall of the mounting hole 21, and therefore soil on the inner wall of the mounting hole 21 can be compacted; as described above, the provision of the subsidence prevention device 2 can reduce the possibility of the foundation 1 settling.
As shown in fig. 3 and 4, the elastic component 3 includes a sliding block 31 fixedly connected to the bottom of the abutting plate 24, a sliding slot 32 opened at the bottom of the connecting cylinder 22 for the sliding block 31 to slide along the radial direction of the connecting cylinder 22, a guide post 33 fixedly connected in the sliding slot 32 and arranged along the radial direction of the connecting cylinder 22, and a first spring 34 sleeved on the guide post 33; the guide post 33 is arranged through the slide block 31, and the slide block 31 is connected with the guide post 33 in a sliding way; one end of the first spring 34 is welded to the inner wall of the chute 32 near one end of the through hole 23, and the other end is welded to one side of the slider 31 near the through hole 23. The slide groove 32 has a guiding function on the slider 31, so that the possibility of the abutting plate 24 deviating during the radial sliding along the connecting cylinder 22 can be reduced; the guide post 33 has a limiting effect on the sliding block 31, so that the possibility of separating the abutting plate 24 from the connecting cylinder 22 can be reduced, and the anti-settling device 2 is convenient to transport; by providing the first spring 34, a certain pressure can be applied to the slider 31, and the possibility of the contact plate 24 moving in the connecting cylinder 22 can be reduced.
As shown in fig. 4 and 5, an elastic belt 4 is installed between two adjacent abutting plates 24, slots 243 are respectively formed in opposite inner sides of the two adjacent abutting plates 24, two ends of the elastic belt 4 are respectively inserted into the two slots 243, a protrusion 41 is fixedly connected to one side of the elastic belt 4 away from the through hole 23, and the protrusion 41 and the elastic belt 4 can be made of vulcanized rubber; each abutting plate 24 is provided with a fixing mechanism for fixing one end of the elastic band 4. When the abutting plates 24 abut against the inner wall of the mounting hole 21, the elastic band 4 can effectively prevent the soil from moving to the gap between the two abutting plates 24, so that the possibility of collapse of the soil on the inner wall of the mounting hole 21 can be reduced.
As shown in fig. 5 and 6, the fixing mechanism includes a plurality of sets of fixing assemblies 5 vertically and sequentially disposed on one side of the abutting plate 24; each group of fixing components 5 comprises a sinking groove 51 which is arranged on one side of the abutting plate 24 and communicated with the slot 243, a fixing block 52 vertically and fixedly connected in the sinking groove 51, a bolt 53 which is connected to the fixing block 52 in a sliding manner along the width direction of the sinking groove 51, a block 54 which is sleeved on the bolt 53 and is connected to the sinking groove 51 in a sliding manner along the width direction of the sinking groove 51, a second spring 55 sleeved on the bolt 53, a first jack 56 arranged on one side of the elastic belt 4 and a second jack 57 which is arranged corresponding to the first jack 56 and is arranged on one side of the slot 243 far away from the sinking groove 51; the bolts 53 penetrate through the fixed block 52, one ends of the bolts 53 close to the slots 243 are sequentially inserted into the first insertion holes 56 and the second insertion holes 57, and a pull rod 58 is fixedly connected between every two adjacent bolts 53; block 54 is between anchor block 52 and slot 243; two ends of the second spring 55 are respectively fixed to the block 54 and the fixed block 52. When the elastic band 4 needs to be installed, the pull rod 58 is pulled to pull the bolt 53, the bolt 53 moves to separate the bolt 53 from the second jack 57, and then the elastic band 4 can be installed, moreover, the bolt 53 moves to drive the block 54 to move, the block 54 moves to press against the second spring 55, and at this time, the second spring 55 is in a compressed state; when the elastic band 4 is installed, the pull rod 58 is released, and the block 54 pushes the bolt 53 to be sequentially inserted into the first insertion hole 56 and the second insertion hole 57 under the action of the second spring 55; by arranging the fixing mechanism, the elastic belt 4 is convenient to mount, so that the labor intensity of operators can be reduced.
As shown in fig. 7, the driving mechanism 6 includes a frame 61, a plurality of non-collinear rollers 62 disposed at the bottom of the frame 61, a first hydraulic cylinder 63 vertically disposed at the top of the frame 61, and a connecting assembly 64 mounted at the bottom of the piston rod of the first hydraulic cylinder 63 for connecting the push rod 25. When the push rod 25 needs to be driven to move, the push rod 25 is connected to the piston rod of the first hydraulic cylinder 63 through the connecting assembly 64, and then the push rod 25 is driven to move downwards through the piston rod of the first hydraulic cylinder 63; by arranging the driving mechanism 6, the push rod 25 can be driven to move conveniently, so that the labor intensity of operators can be reduced.
The connecting assembly 64 includes a connecting plate 641 fixed to the bottom of the piston rod of the first hydraulic cylinder 63 and disposed horizontally, and two second hydraulic cylinders 642 symmetrically disposed on one side of the connecting plate 641 away from the first hydraulic cylinder 63; an arc plate 643 is fixedly connected to a piston rod of each second hydraulic cylinder 642, an inner circumferential surface of each arc plate 643 abuts against an outer circumferential surface of the push rod 25, and the two arc plates 643 form a circular ring with an inner diameter equal to a top surface diameter of the push rod 25. When it is desired to connect the push rod 25 to the piston rod of the first hydraulic cylinder 63, the two arc plates 643 are located at both sides of the top of the push rod 25 by moving the driving mechanism 6, and then the push rod 25 is clamped by pushing the arc plates 643 through the piston rod of the second hydraulic cylinder 642; by providing the connecting assembly 64, the push rod 25 is conveniently and fixedly connected with the piston rod of the first hydraulic cylinder 63, so that the possibility that the connecting plate 641 deviates the push rod 25 in the process of pushing the push rod 25 to move can be reduced.
As shown in fig. 1 and 8, a groove 7 connected end to end is dug in the periphery of the foundation 1, an annular concrete layer 71 is laid in the groove 7, a sponge layer 72 is installed between the concrete layer 71 and the groove 7, and a plurality of annular pipes 711 are sequentially embedded in the concrete layer 71 along the vertical direction; one side of the annular pipe 711 close to the sponge layer 72 is communicated with a plurality of water inlet pipes 712 which are obliquely arranged upwards, and one ends of the water inlet pipes 712 far away from the annular pipe 711 penetrate through the concrete layer 71 and are inserted into the sponge layer 72; a plurality of drain pipes 713 which are obliquely downwards arranged are arranged on one side, close to the groove 7, of the annular pipe 711, one ends, far away from the annular pipe 711, of the drain pipes 713 are arranged through the outer side of the concrete layer 71, the drain pipes 713 are respectively arranged at the corners of the groove 7, and water collecting grooves 73 are formed in the corners of the groove 7; the sponge layer 72 is relatively inexpensive and has a high water absorbing capacity. The sponge layer 72 is arranged, so that water in the foundation 1 layer can be absorbed conveniently; the water inlet pipe 712, the annular pipe 711 and the water outlet pipe 713 are arranged, so that water in the sponge layer 72 can be conveniently discharged, and the strength of the soil body of the foundation 1 can be improved; further, by providing the concrete layer 71, the influence of the soil on the surrounding buildings can be reduced when the settlement preventing device 2 is installed.
A soft soil foundation anti-settling method comprises the following steps:
the method comprises the following steps: digging a groove 7 on the periphery of the foundation 1 through an excavator;
step two: a sponge layer 72 is laid on one side of the groove 7 close to the foundation 1, and steel pipes inserted with the bottom of the groove 7 are arranged in the sponge layer 72, so that the stability of the sponge layer 72 is improved;
step three: a reinforcement cage is laid in the groove 7, and the annular pipe 711, the water inlet pipe 712 and the water outlet pipe 713 are bound by steel wires in the reinforcement cage, so that the annular pipe 711 is in a stable state; then, pouring concrete into the reinforcement cage to form a concrete layer 71;
step four: a plurality of mounting holes 21 are drilled on the foundation 1 through a drilling machine, and the mounting holes 21 can be arranged densely, so that the strength of the soil body of the foundation 1 can be improved;
step five: the anti-settling device 2 is placed on the mounting hole 21 through a crane, then the push rod 25 is placed between the abutting plates 24 through the crane, and at the moment, under the action of the circular truncated cone 26, a part of the bottom of the push rod 25 can enter a space surrounded by the abutting plates 24; some cranes with smaller weight can be selected for hoisting operation, and moreover, the area of the foundation 1 is smaller, and the crane main body can be installed outside the foundation 1;
step six: then, the driving mechanism 6 is moved above the anti-settling device 2, so that the two arc-shaped plates 643 are located at two sides of the top of the push rod 25, then the piston rod of the second hydraulic cylinder 642 pushes the arc-shaped plates 643 to clamp the push rod 25, and at this time, whether the position of the push rod 25 is in a vertical state can be observed by observing the attaching condition of the arc-shaped plates 643 and the outer peripheral surface of the push rod 25; when the push rod 25 is in a vertical state, the piston rod of the first hydraulic cylinder 63 drives the connecting plate 641 to move, the connecting plate 641 moves to drive the push rod 25 to move, and the push rod 25 moves to drive the abutting plate 24 to move towards the inner wall of the mounting hole 21, so that soil on the inner wall of the mounting hole 21 is compacted;
step seven: after all the anti-settling devices 2 are installed, a layer of concrete connected with the concrete layer 71 is laid on the foundation 1, so that the anti-settling devices 2 can be protected to a certain extent;
step eight: the water in the water collecting tank 73 is pumped out by the water pump, so that the water is easily drained by the drain pipe 713, and the possibility of the water flowing back from the drain pipe 713 can be reduced.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The utility model provides a foundation structure that soft soil foundation anti-settling, includes ground (1), its characterized in that: the anti-settling device comprises a foundation (1) and is characterized by further comprising a plurality of groups of anti-settling devices (2) arranged in the foundation (1), wherein each group of anti-settling devices (2) comprises a mounting hole (21) formed in the foundation (1), a connecting cylinder (22) arranged in the mounting hole (21) and a plurality of through holes (23) uniformly distributed on the outer peripheral surface of the connecting cylinder (22) along the circumferential direction of the connecting cylinder (22); a butt joint plate (24) is connected in each through hole (23) in a sliding manner along the radial direction of the connecting cylinder (22), and an elastic assembly (3) used for limiting the butt joint plate (24) is installed at the bottom of the connecting cylinder (22); a cylindrical push rod (25) used for pushing the abutting plate (24) to move is arranged in the connecting cylinder (22), an inwards concave first arc surface (241) is arranged at one end, close to the push rod (25), of the abutting plate (24), an outwards convex second arc surface (242) is arranged at the other end of the abutting plate (24), and the first arc surface (241) abuts against the outer peripheral surface of the push rod (25); a circular table block (26) is arranged at the bottom end of the push rod (25), and a driving mechanism (6) for driving the push rod (25) to move is arranged on the foundation (1);
end-to-end grooves (7) are dug in the periphery of the foundation (1), an annular concrete layer (71) is laid in each groove (7), a sponge layer (72) is arranged between each concrete layer (71) and each groove (7), and a plurality of annular pipes (711) are sequentially embedded in each concrete layer (71) along the vertical direction; one side of the annular pipe (711) close to the sponge layer (72) is communicated with a plurality of water inlet pipes (712) which are obliquely arranged upwards, and one ends of the water inlet pipes (712) far away from the annular pipe (711) penetrate through the concrete layer (71) and are inserted into the sponge layer (72); one side of the annular pipe (711) close to the groove (7) is provided with a plurality of drain pipes (713) which are arranged in a downward inclining mode, one end, far away from the annular pipe (711), of each drain pipe (713) penetrates through the outer side of the concrete layer (71), the drain pipes (713) are arranged at the corners of the groove (7) respectively, and water collecting grooves (73) are formed in the corners of the groove (7).
2. A soft soil foundation anti-settling foundation structure as claimed in claim 1, wherein: the elastic component (3) comprises a sliding block (31) fixedly connected to the bottom of the abutting plate (24), a sliding groove (32) formed in the bottom of the connecting cylinder (22) and used for the sliding block (31) to slide along the radial direction of the connecting cylinder (22), a guide pillar (33) fixedly connected in the sliding groove (32) and arranged along the radial direction of the connecting cylinder (22), and a first spring (34) sleeved on the guide pillar (33); the guide post (33) penetrates through the sliding block (31), and the sliding block (31) is connected to the guide post (33) in a sliding manner; one end of the first spring (34) is welded on the inner wall of one end of the sliding groove (32) close to the through hole (23), and the other end of the first spring is welded on one side of the sliding block (31) close to the through hole (23).
3. A soft soil foundation anti-settling foundation structure as claimed in claim 1, wherein: an elastic belt (4) is arranged between every two adjacent abutting plates (24), slots (243) are respectively formed in the opposite inner sides of every two adjacent abutting plates (24), two ends of each elastic belt (4) are respectively inserted into the two slots (243), and a fixing mechanism used for fixing one end of each elastic belt (4) is arranged on each abutting plate (24).
4. A soft soil foundation anti-settling foundation structure as claimed in claim 3, wherein: the fixing mechanism comprises a plurality of groups of fixing assemblies (5) which are sequentially arranged on one side of the abutting plate (24) along the vertical direction; each group of fixing assemblies (5) comprises a sinking groove (51) which is arranged on one side of the abutting plate (24) and communicated with the slot (243), a fixing block (52) which is vertically and fixedly connected in the sinking groove (51), a bolt (53) which is connected to the fixing block (52) in a sliding manner along the width direction of the sinking groove (51), a square block (54) which is sleeved on the bolt (53) and is connected to the sinking groove (51) in a sliding manner along the width direction of the sinking groove (51), a second spring (55) which is sleeved on the bolt (53), a first jack (56) which is arranged on one side of the elastic belt (4) and a second jack (57) which is arranged corresponding to the first jack (56) and is arranged on one side of the slot (243) far away from the sinking groove (51); the bolts (53) penetrate through the fixing block (52), one ends of the bolts (53) close to the slots (243) are sequentially inserted into the first insertion hole (56) and the second insertion hole (57), and a pull rod (58) is fixedly connected between every two adjacent bolts (53); the square block (54) is positioned between the fixed block (52) and the slot (243); two ends of the second spring (55) are fixedly connected to the square block (54) and the fixed block (52) respectively.
5. A soft soil foundation anti-settling foundation structure as claimed in claim 1, wherein: the driving mechanism (6) comprises a rack (61), a plurality of non-collinear rollers (62) arranged at the bottom of the rack (61), a first hydraulic cylinder (63) vertically arranged at the top of the rack (61) and a connecting assembly (64) arranged at the bottom of a piston rod of the first hydraulic cylinder (63) and used for connecting the push rod (25).
6. A soft soil foundation anti-settling foundation structure as claimed in claim 5, wherein: the connecting assembly (64) comprises a connecting plate (641) which is fixedly connected to the bottom of a piston rod of the first hydraulic cylinder (63) and is horizontally arranged and two second hydraulic cylinders (642) which are symmetrically arranged on one side of the connecting plate (641) far away from the first hydraulic cylinder (63); arc-shaped plates (643) are fixedly connected to a piston rod of each second hydraulic cylinder (642), the inner circumferential surface of each arc-shaped plate (643) abuts against the outer circumferential surface of the push rod (25), and the two arc-shaped plates (643) form a circular ring with the inner diameter equal to the diameter of the top surface of the push rod (25).
7. A method of preventing settlement of a soft soil foundation settlement-resistant foundation structure as claimed in any one of claims 1 to 6, wherein: the method comprises the following steps:
the method comprises the following steps: digging a groove (7) on the periphery of the foundation (1);
step two: paving a sponge layer (72) on one side of the groove (7) close to the foundation (1);
step three: paving a steel reinforcement cage in the groove (7), erecting an annular pipe (711), a water inlet pipe (712) and a water outlet pipe (713) in the steel reinforcement cage, and then pouring concrete into the steel reinforcement cage to form a concrete layer (71);
step four: drilling a plurality of mounting holes (21) on the foundation (1) by a drilling machine;
step five: the anti-settling device (2) is placed on the mounting hole (21) through a crane, then the push rod (25) is placed between the abutting plates (24) through the crane, and at the moment, under the action of the circular truncated cone block (26), a part of the bottom of the push rod (25) can enter a space surrounded by the abutting plates (24);
step six: then, the driving mechanism (6) is moved to the upper part of the anti-settling device (2), so that the two arc-shaped plates (643) are positioned at two sides of the top of the push rod (25), then the piston rod of the second hydraulic cylinder (642) pushes the arc-shaped plates (643) to clamp the push rod (25), and at the moment, whether the position of the push rod (25) is in a vertical state or not can be observed by observing the attaching condition of the arc-shaped plates (643) and the outer peripheral surface of the push rod (25); when the push rod (25) is in a vertical state, the piston rod of the first hydraulic cylinder (63) drives the connecting plate (641) to move, the connecting plate (641) moves to drive the push rod (25) to move, and the push rod (25) moves to drive the abutting plate (24) to move towards the inner wall of the mounting hole (21), so that soil on the inner wall of the mounting hole (21) is compacted;
step seven: after all the anti-settling devices (2) are installed, laying a layer of concrete connected with the concrete layer (71) on the foundation (1);
step eight: the water in the water collecting tank (73) is pumped out by a water pump.
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| CN111676961B (en) * | 2020-05-16 | 2021-08-13 | 浙江新中源建设有限公司 | Soft soil foundation treatment method |
| CN112064619A (en) * | 2020-08-05 | 2020-12-11 | 隋国刚 | Concrete reinforcing column for soft foundation road |
| CN112942298B (en) * | 2021-02-02 | 2022-07-29 | 阳江市源丰建设工程有限公司 | Consolidation method of silt soft foundation |
| CN113653090B (en) * | 2021-08-17 | 2022-09-30 | 广东中基建工工程有限公司 | A soil bearing structure for green building |
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