CN117071595B - Intelligent foundation pit supporting structure and construction method thereof - Google Patents
Intelligent foundation pit supporting structure and construction method thereof Download PDFInfo
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- CN117071595B CN117071595B CN202311328963.XA CN202311328963A CN117071595B CN 117071595 B CN117071595 B CN 117071595B CN 202311328963 A CN202311328963 A CN 202311328963A CN 117071595 B CN117071595 B CN 117071595B
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- 238000010276 construction Methods 0.000 title claims abstract description 10
- 230000008093 supporting effect Effects 0.000 title claims description 86
- 238000004804 winding Methods 0.000 claims description 12
- 238000010008 shearing Methods 0.000 claims description 8
- 238000004873 anchoring Methods 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention is suitable for the technical field of foundation pit support, and provides an intelligent foundation pit support structure and a construction method thereof.
Description
Technical Field
The invention belongs to the technical field of foundation pit support, and particularly relates to an intelligent foundation pit support structure and a construction method thereof.
Background
The foundation pit support is used for guaranteeing the safety of underground structure construction and surrounding environment, and is used for supporting, reinforcing and protecting the side wall of the foundation pit and the surrounding environment. The supporting structures commonly adopted at present comprise underground continuous walls, row piles, steel sheet piles, soil nailing walls, natural slope placing and the like;
the existing foundation pit supporting structure is generally supported through a structure with a fixed shape and a fixed size, parameters in a foundation pit cannot be monitored in real time in a long-time supporting process, safety monitoring of the foundation pit is not facilitated, early warning cannot be timely carried out when risks possibly occur in the foundation pit, and further supporting effect cannot be improved through automatic adjustment of the supporting structure.
Disclosure of Invention
The invention provides an intelligent foundation pit supporting structure, which aims to solve the problems.
The invention is realized in such a way that an intelligent foundation pit supporting structure comprises an enclosure structure and a supporting structure, wherein the supporting structure comprises:
the middle column is fixedly arranged in the middle of the foundation pit;
the mounting sleeves are sleeved on the middle column, the bottommost mounting sleeve is fixedly connected with the middle column, and two adjacent mounting sleeves are connected through a plurality of second hydraulic rods;
the support columns are circumferentially spaced and arranged on each mounting sleeve, and a first hydraulic rod is fixed at one end, away from the mounting sleeve, of each support column;
the support piece that is fixed in first hydraulic stem is close to envelope one end, support piece includes:
a side mounting plate fixedly connected with the first hydraulic rod;
the first support plate is arranged on the side wall, close to the building envelope, of the side mounting plate, the center position of the first support plate is rotationally connected with the side mounting plate, the second support plates are respectively and slidably arranged on the upper side and the lower side of the first support plate on the side mounting plate, a plurality of extension springs are connected between the two second support plates and the first support plate, and the first support plate is provided with a pressure sensor for monitoring the pressure of the building envelope on the support structure;
and the driving structure is arranged in the side mounting plate and used for driving the first supporting plate to rotate, and the driving structure is electrically connected with the pressure sensor.
Preferably, the pressure sensor is electrically connected to an alarm.
Preferably, the driving structure includes:
the two disc bodies are symmetrically and rotatably arranged on the side mounting plate, the two disc bodies take a vertical line passing through the center of the first supporting plate as a symmetrical axis, and the two disc bodies are in transmission connection through a synchronizing piece;
the two disc bodies are respectively provided with a pin shaft which is eccentrically fixed, the pin shafts on the two disc bodies are symmetrical, and a groove for the two pin shafts to insert and move is formed in the first support plate along the length direction of the first support plate;
the first stepping motor is fixed in the side mounting plate and is in driving connection with a disc body.
Preferably, a plurality of arc-shaped elastic rods are arranged in the side mounting plates at intervals side by side, the arc tops of the arc-shaped elastic rods are close to the first support plate, two ends of each of the plurality of arc-shaped elastic rods are respectively connected with a resisting plate, and the resisting plates extend to one side, far away from the first support plate, of the second support plate.
Preferably, a shearing fork mechanism is connected between a plurality of support columns positioned on the same vertical plane, two connecting sleeves are sleeved on each support column at intervals, the connecting sleeves are fixed with the support columns through bolts, the two connecting sleeves are respectively hinged with the shearing fork mechanism, and a connecting rod is connected between adjacent support columns positioned on the same horizontal plane.
Preferably, the two side walls of the shell of the first hydraulic rod are respectively hinged with a connecting rod, one end of the connecting rod, which is far away from the first hydraulic rod, is hinged with a sliding seat, the sliding seat is in sliding connection with the side mounting plate, and the sliding seat is connected with the side mounting plate through a bolt.
Preferably, an anchoring structure is also included, the anchoring structure comprising:
the first anchor rods are circumferentially arranged at intervals on the outer side of the foundation pit;
a plurality of second anchor rods arranged at the top of the enclosure structure at intervals;
and the guide wheels used for installing the anchor ropes are rotatably arranged on the first anchor rod and the second anchor rod.
Preferably, the anchor structure further comprises spur gears, winding rollers and a second stepping motor, the two ends of the anchor cable wind around the same first anchor rod and then wind around the two winding rollers arranged at intervals respectively, the two winding rollers are fixed on the mounting shafts of the two meshed spur gears respectively, the two spur gears are all rotatably mounted outside the foundation pit, the second stepping motor used for driving one spur gear to rotate is fixedly mounted outside the foundation pit, and the second stepping motor is electrically connected with the pressure sensor.
Preferably, the intermediate column and/or the enclosure structure is connected with an auxiliary structure, and the auxiliary structure comprises:
the support rod is formed by connecting an inner rod and an outer rod in a telescopic way, the inner rod is positioned on the rod end in the outer rod, a plurality of rings of ratchet rings are arranged along the length direction of the inner rod, pawls matched with the ratchet rings are arranged on the rod wall of the outer rod, a torsion spring is connected between the pawls and the outer rod, and in a natural state, the acting force of the torsion spring on the pawls keeps meshed with the ratchet rings;
the bottom plate is fixed at the bottom of the foundation pit, the movable seat is slidably arranged on the bottom plate, and the other end of the supporting rod is hinged with the movable seat;
and the power mechanism is arranged on the bottom plate and used for driving the movable seat to horizontally move, and the pressure sensor is electrically connected with the power mechanism.
Preferably, the movable seat is a column body, an arc-shaped elastic plate is arranged between the movable seat and the bottom plate, one end, close to the supporting rod, of the arc-shaped elastic plate is hinged to the bottom plate, one end, far away from the supporting rod, of the arc-shaped elastic plate extends upwards to the upper side of the movable seat, a plurality of inserting rods are fixed on the lower surface of the arc-shaped elastic plate at intervals, the length of each inserting rod is gradually prolonged towards one end, far away from the supporting rod, of each inserting rod, and a through hole for the movement of each inserting rod is formed in the bottom plate.
The invention also provides a construction method of the intelligent foundation pit supporting structure, which comprises the following steps:
pressing the middle column into a soil layer through a hydraulic static pile, and sleeving a plurality of mounting sleeves on the middle column;
constructing an enclosure structure;
excavating to the first layer of support setting depth to finish the installation of the support column and the support piece;
repeating the steps until the pit bottom is excavated;
the lowest mounting sleeve is fixedly connected with the middle column, and a second hydraulic rod is connected between the adjacent mounting sleeves.
Compared with the prior art, the embodiment of the application has the following main beneficial effects:
the intelligent foundation pit supporting structure comprises an enclosure structure and a supporting structure, wherein the supporting structure comprises a middle column, mounting sleeves, a second hydraulic rod, a supporting column, a first hydraulic rod and a supporting piece, the supporting piece comprises a side mounting plate, a first supporting plate, a second supporting plate and a driving structure, a pressure sensor is mounted on the first supporting plate, the positions of the mounting sleeves are adjusted through synchronous extension or shortening of all the second hydraulic rods according to the depth of a foundation pit, the positions of the supporting columns are adjusted, the supporting position of the enclosure structure is adjusted, in the supporting process, when monitoring data of the pressure sensor exceeds a set value, an alarm is given out, an intelligent monitoring function is achieved, meanwhile, the driving structure is controlled to start, the driving structure drives the first supporting plate to rotate, the second supporting plates on two sides are driven to move upwards and downwards respectively, the supporting range of the first supporting plate and the second supporting plate to the enclosure structure is enlarged, the supporting function is improved, and the enclosure structure is enabled to be stable.
Drawings
FIG. 1 is a schematic view of an intelligent foundation pit supporting structure provided by the invention;
FIG. 2 is a side view of a support member in an intelligent foundation pit supporting structure provided by the invention;
FIG. 3 is a schematic view of a first support plate, a second support plate and a driving structure in an intelligent foundation pit supporting structure according to the present invention;
FIG. 4 is a schematic diagram of a driving structure in an intelligent foundation pit supporting structure according to the present invention;
FIG. 5 is a top view of an intelligent foundation pit supporting structure provided by the invention;
FIG. 6 is a schematic view of an auxiliary structure in an intelligent foundation pit supporting structure provided by the invention;
fig. 7 is an enlarged view at a in fig. 6.
Reference numerals annotate: 1. a building envelope; 2. a side mounting plate; 3. a first support plate; 4. a second support plate; 5. an arc-shaped elastic rod; 6. a retaining plate; 7. a first hydraulic lever; 8. connecting sleeves; 9. a support column; 10. a scissors mechanism; 11. a middle column; 12. an alarm; 13. a mounting sleeve; 14. a pressure sensor; 15. a second hydraulic lever; 16. a drill string; 17. a pin shaft; 18. a tray body; 19. a synchronizing member; 20. a first stepping motor; 21. a connecting rod; 22. a connecting rod; 23. a first anchor rod; 24. a second anchor rod; 25. an anchor cable; 26. spur gears; 27. winding a roller; 28. a support rod; 29. a movable seat; 30. a screw rod; 31. a third stepper motor; 32. a bottom plate; 33. an arc-shaped elastic plate; 34. a rod; 35. ratchet ring; 36. a pawl.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The embodiment of the invention provides an intelligent foundation pit supporting structure, which comprises an enclosure structure 1 and a supporting structure, wherein the enclosure structure 1 can adopt construction methods such as steel sheet piles, filling piles, SMW, underground continuous walls and the like in the prior art, and the supporting structure comprises:
the middle column 11 is fixedly arranged in the middle of the foundation pit, a plurality of drill columns 16 are connected between the middle column 11 and the bottom of the foundation pit, so that the stability of the foundation pit is improved, lugs can be welded at the bottom of the middle column 11, then the drill columns 16 are in threaded connection with the lugs, and the drill columns 16 can be rotated to drill into the bottom of the foundation pit;
the mounting sleeves 13 are sleeved on the middle column 11, the bottommost mounting sleeve 13 is fixedly connected with the middle column 11, can be fixed through bolts or welding, and two adjacent mounting sleeves 13 are connected through a plurality of second hydraulic rods 15 and can be connected through bolts;
the plurality of support columns 9 are circumferentially spaced and mounted on each mounting sleeve 13, and a first hydraulic rod 7 is fixed at one end of each support column 9 away from each mounting sleeve 13 and can be fixed through bolts;
a support member fixed on one end of the first hydraulic rod 7 near the enclosure structure 1, the support member comprises:
a side mounting plate 2 fixedly connected with the first hydraulic rod 7;
the first support plate 3 is installed on the side wall of the side mounting plate 2, which is close to the enclosure structure 1, the center position of the first support plate 3 is rotationally connected with the side mounting plate 2, the second support plate 4 is respectively and slidably installed on the upper side and the lower side of the first support plate 3 on the side mounting plate 2, a long sliding block can be arranged on the second support plate 4, a sliding groove for the long sliding block to be slidably connected is formed on the side mounting plate 2, a plurality of extension springs are connected between the two second support plates 4 and the first support plate 3, grooves for accommodating the extension springs can be formed on the contact surface of the first support plate 3 and the second support plate 4, two ends of each extension spring are respectively hooked with the first support plate 3 and the second support plate 4, a pressure sensor 14 is installed on the first support plate 3 and used for monitoring the pressure of the enclosure structure 1, preferably, the pressure sensor 14 is electrically connected with an alarm 12, the alarm 12 can be a warning lamp and/or a buzzer and the like, can be installed inside or outside a monitoring chamber, and can be installed on the foundation pit through a top column 11 in the embodiment;
the driving structure is arranged in the side mounting plate 2 and used for driving the first supporting plate 3 to rotate, the driving structure is electrically connected with the pressure sensor 14 and can be matched with a controller, and the controller can be a singlechip;
when the hydraulic support structure is used, the positions of the mounting sleeves 13 can be adjusted by synchronously extending or shortening all the second hydraulic rods 15 according to the depth of a foundation pit, so that the positions of the support columns 9 are adjusted, and the support positions of the enclosure structure 1 are adjusted, when the monitoring data of the pressure sensor 14 exceeds a set value in the support process, the alarm 12 gives an alarm to remind a worker to pay attention to or check, an intelligent monitoring effect is achieved, meanwhile, the driving structure is controlled to start, the driving structure drives the first support plate 3 to rotate, the first support plate 3 drives the second support plates 4 on two sides to move upwards and downwards respectively, the support range of the whole first support plate 3 and the whole second support plate 4 to the enclosure structure 1 is enlarged, the support effect is improved, and the enclosure structure 1 is stable;
wherein, the drive structure includes:
the two disc bodies 18 are symmetrically and rotatably arranged on the side mounting plate 2 and can be rotatably arranged through bearings, the two disc bodies 18 take a vertical line passing through the center of the first supporting plate 3 as a symmetrical axis, the two disc bodies 18 are in transmission connection through a synchronizing piece 19, and the synchronizing piece 19 can be of a synchronous belt structure or a chain structure;
the two disc bodies 18 are respectively and eccentrically fixed with the pin shafts 17, the two disc bodies 18 can be fixed by welding, the pin shafts 17 on the two disc bodies 18 are symmetrical, and a groove for inserting and moving the two pin shafts 17 is formed in the first support plate 3 along the length direction of the first support plate;
the first stepper motor 20 fixed in the side mounting plate 2 can be fixed through bolts, the first stepper motor 20 is in driving connection with one disc 18, and the output shaft of the first stepper motor 20 can be welded and fixed with the center of one disc 18;
starting a first stepping motor 20, wherein the first stepping motor 20 drives two disc bodies 18 to synchronously rotate through a synchronizing piece 19, pin shafts 17 on the two disc bodies 18 drive a first supporting plate 3 to rotate, and the first supporting plate 3 pushes two second supporting plates 4 to move away from each other;
in this embodiment, a plurality of arc-shaped elastic rods 5 are arranged in the side mounting plate 2 at intervals side by side, the arc tops of the arc-shaped elastic rods 5 are close to the first support plate 3, two ends of the arc-shaped elastic rods 5 are respectively connected with a retaining plate 6, the retaining plates 6 and the arc-shaped elastic rods 5 can be integrally arranged, and the retaining plates 6 extend to one side, far away from the first support plate 3, of the second support plate 4;
when the second support plate 4 moves to the side far away from the first support plate 3, the second support plate 4 pushes the retaining plate 6, and the retaining plate 6 further bends the arc-shaped elastic rod 5 into an arc shape, so that the acting force towards one side of the enclosure structure 1 is increased, and the mechanical property of the side mounting plate 2 can be improved;
in the specific implementation, a shearing fork mechanism 10 is connected between a plurality of support columns 9 positioned on the same vertical surface, two connecting sleeves 8 are sleeved on each support column 9 at intervals, the connecting sleeves 8 are fixed with the support columns 9 through bolts, the two connecting sleeves 8 are respectively hinged with the shearing fork mechanism 10, after all the support columns 9 are installed, the positions of the connecting sleeves 8 on the support columns 9 can be adjusted, and then the shearing fork mechanism 10 is installed;
the plurality of support columns 9 are connected into a whole through the shearing fork mechanism 10, so that the support columns 9 can be mutually supported in an auxiliary manner, and the mutual force is applied, so that the whole support effect of the support structure is better;
preferably, a connecting rod 22 is connected between adjacent support columns 9 on the same horizontal plane, and the connecting rod 22 can be arc-shaped and can be connected through bolts;
of course, in order to improve the supporting effect, the connecting rods 21 are hinged on two side walls of the shell of the first hydraulic rod 7 respectively, one end, away from the first hydraulic rod 7, of the connecting rods 21 is hinged with a sliding seat, the sliding seat is slidably connected with the side mounting plate 2, the sliding seat is connected with the side mounting plate 2 through bolts, and after the first supporting plate 3 and the second supporting plate 4 are attached to the enclosure structure 1, the sliding seat is fixed with the side mounting plate 2 through bolts, so that the connecting rods 21 can further provide supporting.
Further, intelligent foundation ditch supporting construction still includes anchor structure, anchor structure includes:
a plurality of first anchor rods 23 circumferentially arranged at intervals outside the foundation pit;
a plurality of second anchor rods 24 arranged at intervals on the top of the enclosure structure 1;
an anchor cable 25 connected in series between the first anchor rod 23 and the second anchor rod 24, and guide wheels for installing the anchor cable 25 are rotatably installed on the first anchor rod 23 and the second anchor rod 24;
further, the anchoring structure further comprises a spur gear 26, a winding roller 27 and a second stepping motor (not shown in the figure), the two ends of the anchor cable 25 are wound on the two winding rollers 27 arranged at intervals after bypassing the same first anchor rod 23, the two winding rollers 27 are respectively fixed on the mounting shafts of the two meshed spur gears 26, the two spur gears 26 are both rotatably mounted outside the foundation pit, the outside of the foundation pit is fixedly provided with the second stepping motor for driving one spur gear 26 to rotate, the second stepping motor is electrically connected with the pressure sensor 14, a mounting seat can be fixed outside the foundation pit, and then the second stepping motor and the spur gear 26 are mounted on the mounting seat;
it can be understood that when the monitoring data of the pressure sensor 14 is greater than the set value, the second stepping motor is controlled to start, the second stepping motor drives the spur gears 26 to rotate, the two spur gears 26 drive the two winding rollers 27 to rotate, and the two winding rollers 27 wind the two ends of the anchor cable 25 simultaneously, so that the anchor cable 25 generates an outward pulling force on the enclosure structure 1 through the plurality of second anchor rods 24, and the support stability is further improved;
in a specific implementation, the intermediate column 11 and/or the enclosure 1 are/is connected with an auxiliary structure, and the auxiliary structure comprises:
the support rod 28 with one end hinged with the middle column 11 or the enclosure structure 1, the support rod 28 is formed by telescopic connection of an inner rod and an outer rod, the inner rod is positioned on the rod end in the outer rod and is provided with a plurality of circles of ratchet rings 35 along the length direction of the inner rod, the rod wall of the outer rod is provided with a pawl 36 matched with the ratchet rings 35, a torsion spring is connected between the pawl 36 and the outer rod, and the acting force of the torsion spring on the pawl 36 keeps meshed with the ratchet rings 35 in a natural state;
the bottom plate 32 fixed at the bottom of the foundation pit can be fixed through a drill rod, the bottom plate 32 is slidably provided with the movable seat 29, and the other end of the supporting rod 28 is hinged with the movable seat 29;
the power mechanism is arranged on the bottom plate 32 and used for driving the movable seat 29 to horizontally move, and the pressure sensor 14 is electrically connected with the power mechanism;
when the monitoring data of the pressure sensor 14 is larger than a set value, the power mechanism is started to drive the movable seat 29 to move far away from the middle column 11 or the building envelope 1, the supporting rod 28 is pulled to extend, the supporting rod 28 cannot be shortened to support under the cooperation of the ratchet ring 35 and the pawl 36, and meanwhile, the supporting range of the supporting rod 28 is enlarged, and the supporting effect is improved;
wherein, power unit includes:
a screw rod 30 horizontally rotatably mounted on the bottom plate 32 and rotatably mounted through a bearing and a bearing seat, wherein the screw rod 30 penetrates through the movable seat 29 and is in threaded connection with the movable seat;
the third stepper motor 31 is fixed on the bottom plate 32 and is used for driving the screw rod 30 to rotate, an output shaft of the third stepper motor 31 can be fixedly connected with one end of the screw rod 30 through a coupler, the screw rod 30 is driven to rotate through the third stepper motor 31, and the screw rod 30 drives the movable seat 29 to move;
preferably, the movable seat 29 is a column, an arc-shaped elastic plate 33 is arranged between the movable seat 29 and the bottom plate 32, one end of the arc-shaped elastic plate 33, which is close to the supporting rod 28, is hinged with the bottom plate 32, one end of the arc-shaped elastic plate 33, which is far away from the supporting rod 28, extends upwards to above the movable seat 29, a plurality of inserting rods 34 are fixed on the lower surface of the arc-shaped elastic plate 33 at intervals, the length of each inserting rod 34 gradually lengthens towards one end, which is far away from the supporting rod 28, and a through hole for the inserting rod 34 to move is formed in the bottom plate 32;
when the movable seat 29 moves away from the middle column 11 or the building enclosure 1, the movable seat 29 presses down the arc-shaped elastic plate 33, so that the arc-shaped elastic plate 33 is inserted into the inserting rod 34 on the ground more and deeper, the connection stability of the bottom plate 32 and the bottom of the foundation pit is improved, and the support stability of the middle column 11 or the building enclosure 1 is further improved.
The invention provides a construction method of an intelligent foundation pit supporting structure, which comprises the following steps:
pressing the middle column 11 into a soil layer through a hydrostatic pile, and sleeving a plurality of mounting sleeves 13 on the middle column 11;
constructing an enclosure structure 1;
digging to the first layer of support setting depth to finish the installation of the support column 9 and the support piece;
repeating the steps until the pit bottom is excavated;
the lowermost mounting sleeve 13 is fixedly connected to the intermediate column 11 and a second hydraulic rod 15 is connected between adjacent mounting sleeves 13.
It should be noted that, for the sake of simplicity of description, the foregoing embodiments are all described as a series of combinations of actions, but it should be understood by those skilled in the art that the present invention is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present invention or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, which also falls within the scope of the present invention.
Claims (8)
1. The utility model provides an intelligent foundation ditch supporting structure, includes envelope and bearing structure, its characterized in that, bearing structure includes:
the middle column is fixedly arranged in the middle of the foundation pit;
the mounting sleeves are sleeved on the middle column, the bottommost mounting sleeve is fixedly connected with the middle column, and two adjacent mounting sleeves are connected through a plurality of second hydraulic rods;
the support columns are circumferentially spaced and arranged on each mounting sleeve, and a first hydraulic rod is fixed at one end, away from the mounting sleeve, of each support column;
the support piece that is fixed in first hydraulic stem is close to envelope one end, support piece includes:
a side mounting plate fixedly connected with the first hydraulic rod;
the device comprises a side mounting plate, a first supporting plate, a second supporting plate, two tension springs, a pressure sensor, a plurality of arc-shaped elastic rods, a plurality of support plates and a plurality of support plates, wherein the first supporting plate is arranged on the side mounting plate, which is close to the side wall of the building envelope, the center of the first supporting plate is rotationally connected with the side mounting plate;
install and be used for driving first backup pad pivoted drive structure in the side mounting panel, drive structure is connected with the pressure sensor electricity, drive structure includes:
the two disc bodies are symmetrically and rotatably arranged on the side mounting plate, the two disc bodies take a vertical line passing through the center of the first supporting plate as a symmetrical axis, and the two disc bodies are in transmission connection through a synchronizing piece;
the two disc bodies are respectively provided with a pin shaft which is eccentrically fixed, the pin shafts on the two disc bodies are symmetrical, and a groove for the two pin shafts to insert and move is formed in the first support plate along the length direction of the first support plate;
the first stepping motor is fixed in the side mounting plate and is in driving connection with a disc body.
2. The intelligent foundation pit supporting structure of claim 1, wherein the pressure sensor is electrically connected to an alarm.
3. The intelligent foundation pit supporting structure according to claim 1, wherein a shearing fork mechanism is connected between a plurality of supporting columns positioned on the same vertical plane, two connecting sleeves are sleeved on each supporting column at intervals, the connecting sleeves are fixed with the supporting columns through bolts, the two connecting sleeves are hinged with the shearing fork mechanism respectively, and connecting rods are connected between adjacent supporting columns positioned on the same horizontal plane.
4. The intelligent foundation pit supporting structure according to claim 1, wherein connecting rods are hinged to two side walls of the shell of the first hydraulic rod respectively, one end, away from the first hydraulic rod, of each connecting rod is hinged to a sliding seat, the sliding seats are in sliding connection with the side mounting plates, and the sliding seats are connected with the side mounting plates through bolts.
5. The intelligent foundation pit support structure of claim 1, further comprising an anchor structure, the anchor structure comprising:
the first anchor rods are circumferentially arranged at intervals on the outer side of the foundation pit;
a plurality of second anchor rods arranged at the top of the enclosure structure at intervals;
and the guide wheels used for installing the anchor ropes are rotatably arranged on the first anchor rod and the second anchor rod.
6. The intelligent foundation pit supporting structure according to claim 5, wherein the anchoring structure further comprises spur gears, winding rollers and a second stepping motor, the two ends of the anchor cable are wound on the two winding rollers arranged at intervals after bypassing the same first anchor rod, the two winding rollers are respectively fixed on mounting shafts of the two meshed spur gears, the two spur gears are rotatably mounted outside the foundation pit, the second stepping motor for driving one spur gear to rotate is fixedly mounted outside the foundation pit, and the second stepping motor is electrically connected with the pressure sensor.
7. The intelligent foundation pit supporting structure of claim 1, wherein the intermediate column and/or the enclosure structure is connected with an auxiliary structure, the auxiliary structure comprising:
the support rod is formed by connecting an inner rod and an outer rod in a telescopic way, the inner rod is positioned on the rod end in the outer rod, a plurality of rings of ratchet rings are arranged along the length direction of the inner rod, pawls matched with the ratchet rings are arranged on the rod wall of the outer rod, a torsion spring is connected between the pawls and the outer rod, and in a natural state, the acting force of the torsion spring on the pawls keeps meshed with the ratchet rings;
the bottom plate is fixed at the bottom of the foundation pit, the movable seat is slidably arranged on the bottom plate, and the other end of the supporting rod is hinged with the movable seat;
the power mechanism is arranged on the bottom plate and used for driving the movable seat to horizontally move, and the pressure sensor is electrically connected with the power mechanism;
the movable seat is a column body, an arc-shaped elastic plate is arranged between the movable seat and the bottom plate, one end, close to the supporting rod, of the arc-shaped elastic plate is hinged to the bottom plate, one end, far away from the supporting rod, of the arc-shaped elastic plate upwards extends to the upper portion of the movable seat, a plurality of inserting rods are fixed on the lower surface of the arc-shaped elastic plate at intervals, the length of each inserting rod gradually lengthens towards one end, far away from the supporting rod, of each inserting rod, and a through hole for movement of each inserting rod is formed in the bottom plate.
8. The construction method of the intelligent foundation pit supporting structure according to any one of claims 1 to 7, comprising the steps of:
pressing the middle column into a soil layer through a hydraulic static pile, and sleeving a plurality of mounting sleeves on the middle column;
constructing an enclosure structure;
excavating to the first layer of support setting depth to finish the installation of the support column and the support piece;
repeating the steps until the pit bottom is excavated;
the lowest mounting sleeve is fixedly connected with the middle column, and a second hydraulic rod is connected between the adjacent mounting sleeves.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10195876A (en) * | 1996-11-15 | 1998-07-28 | Furukawa Electric Co Ltd:The | Strut supporter made of light metal alloy |
| CN216739668U (en) * | 2022-02-24 | 2022-06-14 | 河北工程技术学院 | Foundation pit construction supporting device is built in room |
| CN219450750U (en) * | 2023-03-17 | 2023-08-01 | 楚站站 | Collapse-preventing supporting structure for geotechnical engineering foundation pit |
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2023
- 2023-10-16 CN CN202311328963.XA patent/CN117071595B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10195876A (en) * | 1996-11-15 | 1998-07-28 | Furukawa Electric Co Ltd:The | Strut supporter made of light metal alloy |
| CN216739668U (en) * | 2022-02-24 | 2022-06-14 | 河北工程技术学院 | Foundation pit construction supporting device is built in room |
| CN219450750U (en) * | 2023-03-17 | 2023-08-01 | 楚站站 | Collapse-preventing supporting structure for geotechnical engineering foundation pit |
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