CN113846827A - Jacking platform suitable for foundation ditch - Google Patents
Jacking platform suitable for foundation ditch Download PDFInfo
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- CN113846827A CN113846827A CN202111301815.XA CN202111301815A CN113846827A CN 113846827 A CN113846827 A CN 113846827A CN 202111301815 A CN202111301815 A CN 202111301815A CN 113846827 A CN113846827 A CN 113846827A
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- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 16
- 238000010408 sweeping Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 241000269400 Sirenidae Species 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 24
- 230000008878 coupling Effects 0.000 description 14
- 238000010168 coupling process Methods 0.000 description 14
- 238000005859 coupling reaction Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 230000001360 synchronised effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/18—Scaffolds primarily resting on the ground adjustable in height
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/001—Safety or protective measures against falling down relating to scaffoldings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G2005/008—Hoisting devices specially adapted as part of a scaffold system
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
- E04G2005/148—Railings latticed or netted
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a jacking platform suitable for a foundation pit, which belongs to the technical field of underground engineering construction operation platforms, and comprises a platform horizontally placed in the foundation pit, a protective net arranged around the platform, and a plurality of supporting beams arranged at the bottom of the platform, wherein the bottom of each supporting beam is provided with a plurality of jacking pipe joints for supporting the platform, each jacking pipe joint is sequentially erected in the foundation pit along the vertical direction, the bottom of each supporting beam is vertically provided with a plurality of jacks for vertically jacking the platform, and each jacking pipe joint and each jack are distributed at four corners of the platform.
Description
Technical Field
The invention belongs to the technical field of underground engineering construction operation platforms, and particularly relates to a jacking platform suitable for a foundation pit.
Background
The underground engineering is underground civil engineering built for developing and utilizing underground space resources, and includes underground house, underground structure, underground railway, highway tunnel, underwater tunnel, underground common ditch, street-crossing underground passage, etc.
At present, in the process of pile construction in a horizontal MJS construction method, the MJS is required to be constructed from lower row of piles according to the requirement of a construction process, and the upper row of pile positions is constructed after the lower row of piles is constructed, so that the height of a platform is required to be adjusted for many times according to the constructed pile positions.
Disclosure of Invention
The purpose of the invention is as follows: the utility model provides a jacking platform suitable for foundation ditch to solve the above-mentioned problem that prior art exists.
The technical scheme is as follows: a jacking platform suitable for a foundation pit comprises a platform horizontally placed in the foundation pit, a protective net arranged around the platform and a plurality of supporting beams arranged at the bottom of the platform, and is characterized in that a plurality of jacking pipe joints for supporting the platform are arranged at the bottom of the supporting beams, each jacking pipe joint is sequentially erected in the foundation pit along the vertical direction, a plurality of jacks for vertically jacking the platform are vertically arranged at the bottom of the supporting beams, and the jacking pipe joints and the jacks are distributed at four corners of the platform;
each jacking pipe joint comprises square steel cylinders sequentially erected in the foundation pit along the vertical direction, an upper flange is welded at the top of each square steel cylinder, a lower flange is welded at the bottom of each square steel cylinder, and each upper flange is abutted against and fixedly connected with each lower flange through a connecting piece;
the connecting piece is including locating the first bolted connection hole of a plurality of on each upper portion flange, each be equipped with a plurality of second bolted connection hole on the flange of lower part, each first bolted connection hole aligns with second bolted connection hole center, each first bolted connection hole passes through high strength bolt threaded connection with second bolted connection hole, each threaded connection has the nut on the high strength bolt, each first gasket and second gasket have been cup jointed on the high strength bolt, each first gasket compresses tightly on the last quotation of lower part flange through high strength bolt, each the second gasket compresses tightly on the lower quotation of upper portion flange through the nut.
Through adopting above-mentioned technical scheme, after having constructed the MJS pile of lower floor, take apart the connecting piece between the jacking pipe coupling of platform and the superiors this moment, the jack that distributes at four angular points of platform department is with the perpendicular synchronous vertical jacking of horizontal and fore-and-aft supporting beam of platform below this moment, the jacking pipe coupling that will increase this moment passes through the connecting piece and installs on the jacking pipe coupling of superiors, then put horizontal and fore-and-aft supporting beam synchronous vertical transfer to newly-installed jacking pipe coupling through the jack and connect, accomplish the vertical jacking of platform this moment promptly, arrange the MJS pile in the construction, otherwise, demolish the jacking pipe coupling with this method and can reduce the platform height, and then be convenient for rise or reduce the height of platform, and then shorten construction period, improve construction safety, the MJS pile is prior art, do not do too much here.
In a further embodiment, four opposite blind holes are formed in each upper flange, a boss is vertically arranged on the wall of each blind hole, four opposite through holes are formed in each lower flange, each boss extends into each through hole, the centers of each through hole, boss and blind hole are aligned, and a tensioning member for assisting in locking the upper flange and the lower flange is sleeved on each boss.
Through adopting above-mentioned technical scheme, through rising the tight piece with the supplementary locking of upper portion flange and lower part flange, prevent that the skew takes place in the position between upper portion flange and the lower part flange to ensure that first bolted connection hole aligns with second bolted connection hole center, and then improve the smooth and easy nature when connecting piece locking upper portion flange and lower part flange, improve work efficiency.
In a further embodiment, the tightening member includes a fixing ring sleeved on each boss outer ring, each fixing ring is placed at the bottom end of the fixing ring on the wall of the blind hole, the top of each fixing ring is connected with an outer ring and an inner ring in a sliding manner, each outer ring is vertically provided with a first through groove, each outer ring is in contact with the wall of the through hole and the wall of the blind hole, each inner ring is vertically provided with a second through groove, each inner ring of the inner ring is in contact with the outer ring of the boss, each outer ring is connected with a wedge ring in a sliding manner, one side of the wedge ring departing from the outer ring is in contact with the outer ring of the inner ring, each wedge ring is in threaded connection with a locking bolt, and one end of each locking bolt, which is far away from the wedge ring, is in threaded connection with the fixing ring.
Through adopting above-mentioned technical scheme, when upper portion flange and lower part flange were inconsistent, twist the check bolt this moment, the wedge ring was at the vertical downward slip of the in-process of check bolt underspin this moment, the outer loop and inner ring slide and the atress is expanded on the fixed block this moment, outer loop outer lane and through-hole pore wall, the blind hole pore wall tightly contradicts this moment, the inner circle of inner ring tightly contradicts with the outer lane of boss simultaneously, boss this moment, the inner ring, the wedge ring, the outer loop, produce powerful locking power between blind hole and the through-hole, and then with the supplementary locking of upper portion flange and lower part flange.
In a further embodiment, each fixed ring's upper end is equipped with a plurality of guide post, each be equipped with a plurality of guiding hole in the wedge ring, each guide post and guiding hole adaptation and sliding connection.
Through adopting above-mentioned technical scheme, at the vertical in-process that slides downwards of check bolt drive wedge ring, the guide post slides in the guiding hole this moment, and then prevents that wedge ring from taking place the lateral deviation when sliding, makes outer loop and inner ring atress even to guarantee to embrace the stability of power tightly.
In a further embodiment, the jacking pipe sections are erected with supports for auxiliary support of the platform.
Through adopting above-mentioned technical scheme, make the jacking pipe coupling that distributes at four angular points department of platform form a confined support system through support piece, and then improve the stability that jacking pipe coupling supported the platform, improve construction safety.
In a further embodiment, the supporting piece comprises diagonal rod connecting rings welded on the peripheral side walls of the square steel cylinders, each diagonal rod connecting ring is obliquely and oppositely provided with a scissor support, the scissor supports are fixedly connected with the diagonal rod connecting rings through turn bolts, each square steel cylinder is welded with a horizontal rod connecting port, each horizontal rod connecting port is horizontally and oppositely provided with a floor sweeping rod, and the floor sweeping rods are in threaded connection with the jacks through bolts;
the scissor supports are steel pipes with phi 48 and are obliquely erected in a diagonal mode at intervals of the vertical length of five jacking pipe joints, the ground sweeping rod is a channel steel and is one meter higher than the ground of the foundation pit, and the ground sweeping rod can be erected on the diagonal rod connecting ring at the same time.
Through adopting above-mentioned technical scheme, erect the bridging through the vertical length slant of every five layers of jacking pipe joints to drawing, the while is horizontal to drawing and is erect the pole of sweeping the ground on the horizontal pole connector, improves the horizontal holding power of the jacking pipe joint that distributes in four angular points department of platform, and then makes and form a confined support system between the jacking pipe joint.
In a further embodiment, two opposite fixing rods are respectively arranged on two adjacent sides of one layer of each square steel cylinder on the ground of the foundation pit, a pressure head is vertically arranged on each fixing rod, and a detection piece for detecting the perpendicularity of the jacking pipe joint is arranged on each pressure head.
Through adopting above-mentioned technical scheme, when the incline appeared in the jacking pipe coupling, the pressure head touched the detection piece this moment for the detection piece sends the police dispatch newspaper, reminds constructor to overhaul the jacking joint, further improves construction safety.
In further embodiment, the detection piece includes that the level is placed at the subaerial a plurality of base of foundation ditch, each the vertical backup pad that is equipped with on the base, each one side that the backup pad deviates from square steel cylinder is equipped with the fixed block, each be equipped with the movable slot on the fixed block, each the inside vertical spring that is equipped with of movable slot, each the one end that the movable slot was kept away from to the spring is equipped with the shifting block, each the shifting block slides with the movable slot respectively and is connected, each one side that the backup pad deviates from square steel cylinder rotates and is connected with the movable rod, each the vertical movable block that is equipped with on the movable rod, each the movable rod is kept away from to the movable block one end is inconsistent with the shifting block respectively, each be equipped with two relative sirens on the base respectively, each be equipped with the inductor on the siren, each the inductor is located the movable rod under, each the pressure head is located the movable rod directly over.
Through adopting above-mentioned technical scheme, when the skew appears in the jacking pipe coupling, it makes the movable rod rotate simultaneously to drive the pressure head touching movable rod this moment, the movable rod drives the movable rod and rotates this moment, the shifting block slides in the movable block upper end this moment, the elasticity of borrowing the spring makes the shifting block stir the movable block rapidly and rotate this moment, the movable block drives the movable rod and rotates rapidly and inconsistent with the inductor this moment, transmit signal to the siren through the inductor this moment, make the siren send out the alarm sound and light, and then remind constructor jacking pipe coupling emergence skew.
In a further embodiment, each base is provided with a level meter for detecting the levelness of the base.
Through adopting above-mentioned technical scheme, ensure through the spirit level that the base was placed at the subaerial levelness of foundation ditch, and then ensure the accuracy of detection piece testing result.
In conclusion, the invention has the following beneficial effects:
1. after the MJS piles on the lower layer are constructed, the connecting pieces between the platform and the jacking pipe joints on the upper layer are disassembled, the jacks distributed at four corner points of the platform vertically and synchronously lift the transverse and longitudinal supporting beams below the platform, the increased jacking pipe joints are installed on the jacking pipe joints on the upper layer through the connecting pieces, then the transverse and longitudinal supporting beams are synchronously and vertically placed onto the newly installed jacking pipe joints through the jacks for connection, the vertical jacking of the platform is completed at the moment, the MJS piles are arranged in construction, otherwise, the height of the platform can be reduced by disassembling the jacking pipe joints by the method, the height of the platform can be conveniently increased or reduced, the construction period is shortened, and the construction safety is improved.
2. Through rising the supplementary locking of tight piece with upper portion flange and lower part flange, prevent that the skew takes place in the position between upper portion flange and the lower part flange to ensure that first bolted connection hole aligns with second bolted connection hole center, and then improve the smooth and easy nature when connecting piece locking upper portion flange and lower part flange, improve work efficiency.
3. Make the jacking pipe joint that distributes at four angular points department of platform form a confined support system through support piece between, and then improve the stability that jacking pipe joint supported the platform, improve construction safety.
4. When the jacking pipe joint is inclined, the pressure head touches the detection piece at the moment, so that the detection piece gives an alarm to remind constructors to overhaul the jacking joint, and the construction safety is further improved.
5. The levelness of the base placed on the ground of the foundation pit is ensured through the gradienter, and the accuracy of the detection result of the detection piece is further ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a jacking pipe section of the present invention;
FIG. 3 is an enlarged view of A of FIG. 1 of the present invention;
FIG. 4 is an enlarged view of B of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic view of the construction of the turn buckle of the present invention;
FIG. 6 is a schematic view of the tension member of the present invention;
FIG. 7 is an enlarged view of C of FIG. 6 of the present invention;
fig. 8 is a cross-sectional view of the tension member of the present invention.
The reference signs are: 1. jacking the pipe sections; 2. a jack; 3. a scissor support; 4. a turn buckle; 5. a ground sweeping bar; 6. a support beam; 7. a platform; 8. a protective net; 9. a square steel cylinder; 10. a lower flange; 11. an upper flange; 12. a first bolt connection hole; 13. a second bolt connection hole; 14. a diagonal rod connecting ring; 15. a horizontal rod connecting port; 16. a high-strength bolt; 17. a nut; 18. a second gasket; 19. a first gasket; 20. fixing the rod; 21. a pressure head; 22. a fixed block; 23. a movable groove; 24. a spring; 25. shifting blocks; 26. a support plate; 27. a movable block; 28. a base; 29. an alarm; 30. an inductor; 31. an outer ring; 32. a first through groove; 33. an inner ring; 34. a second through groove; 35. a wedge ring; 36. a lock bolt; 37. a boss; 38. blind holes; 39. a fixing ring; 40. a guide hole; 41. a guide post; 42. a through hole; 43. a level gauge; 44. a movable rod.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
As shown in fig. 1 to 3, a jacking platform suitable for a foundation pit comprises a platform 7 horizontally placed in the foundation pit, a protective net 8 arranged around the platform 7, and a plurality of supporting beams 6 arranged at the bottom of the platform 7, and is characterized in that a plurality of jacking pipe joints 1 for supporting the platform 7 are arranged at the bottom of the supporting beams 6, each jacking pipe joint 1 is sequentially erected in the foundation pit along the vertical direction, a plurality of jacks 2 for vertically jacking the platform 7 are vertically arranged at the bottom of the supporting beams 6, each jacking pipe joint 1 and each jack 2 are respectively distributed at four corners of the platform 7, each jacking pipe joint 1 comprises a square steel cylinder 9 sequentially erected in the foundation pit along the vertical direction, an upper flange 11 is welded at the top of each square steel cylinder 9, a lower flange 10 is welded at the bottom of each square steel cylinder 9, each upper flange 11 is abutted against and fixedly connected with the lower flange 10 through a connecting piece, the connecting piece comprises a plurality of first bolt connecting holes 12 arranged on each upper flange 11, a plurality of second bolt connecting holes 13 are arranged on each lower flange 10, the centers of the first bolt connecting holes 12 are aligned with the centers of the second bolt connecting holes 13, each first bolt connecting hole 12 is in threaded connection with each second bolt connecting hole 13 through a high-strength bolt 16, a nut 17 is in threaded connection with each high-strength bolt 16, a first gasket 19 and a second gasket 18 are sleeved on each high-strength bolt 16, each first gasket 19 is tightly pressed on the upper disc surface of the lower flange 10 through the high-strength bolt 16, each second gasket 18 is tightly pressed on the lower disc surface of the upper flange 11 through the nut 17, after the construction of the MJS pile at the lower layer is finished, the connecting piece between the platform 7 and the jacking pipe joint 1 at the uppermost layer is disassembled at the moment, the jacks 2 distributed at four corner points of the platform 7 vertically and synchronously and vertically jack the transverse and longitudinal supporting beams 6 below the platform 7 at the moment, jacking pipe joint 1 that will increase this moment installs on the jacking pipe joint 1 of the superiors through the connecting piece, then through jack 2 with horizontal and fore-and-aft supporting beam 6 synchronous vertical transfer to newly install jacking pipe joint 1 go up and connect, accomplish the vertical jacking to platform 7 this moment promptly, arrange the MJS stake on the construction, otherwise, demolish jacking pipe joint 1 with this method and can reduce platform 7 height, and then be convenient for rise or reduce platform 7 height, and then shorten construction period, improve construction safety, the MJS stake is prior art, do not do too much repeated here.
As shown in fig. 6 to 8, each upper flange 11 is provided with four opposite blind holes 38, a boss 37 is vertically arranged on the hole wall of each blind hole 38, each lower flange 10 is provided with four opposite through holes 42, each boss 37 extends into the through hole 42, each through hole 42, the boss 37 aligns with the center of the blind hole 38, each boss 37 is sleeved with a tightening member for assisting in locking the upper flange 11 and the lower flange 10, the upper flange 11 and the lower flange 10 are locked by the tightening member, and the upper flange 11 and the lower flange 10 are prevented from shifting from each other, so as to ensure that the centers of the first bolt connecting hole 12 and the second bolt connecting hole 13 align, thereby improving the smoothness when the connecting member locks the upper flange 11 and the lower flange 10, and improving the working efficiency.
As shown in fig. 6 to 8, the tensioning member includes fixing rings 39 sleeved on outer rings of the bosses 37, bottom ends of the fixing rings 39 are placed on walls of the blind holes 38, tops of the fixing rings 39 are connected with outer rings 31 and inner rings 33 in a sliding manner, each outer ring 31 is vertically provided with a first through groove 32, the outer ring of each outer ring 31 is abutted against walls of the through holes 42 and the blind holes 38, each inner ring 33 is vertically provided with a second through groove 34, inner rings of the inner rings 33 are abutted against outer rings of the bosses 37, inner rings of each outer ring 31 are connected with wedge rings 35 in a sliding manner, one sides of the wedge rings 35 departing from the outer rings 31 are abutted against outer rings of the inner rings 33, each wedge ring 35 is internally connected with a locking bolt 36 in a threaded manner, one end of each locking bolt 36 far from a wedge ring 35 is connected to the fixing ring 39 in a threaded manner, when the upper flange 11 is abutted against the lower flange 10, the locking bolt 36 is screwed, at this time, the wedge ring 35 vertically slides downwards in a downward rotating process of the bolt 36, at this time, the outer ring 31 and the inner ring 33 slide on the fixing block 22 and are expanded under stress, at this time, the outer ring of the outer ring 31 tightly abuts against the hole walls of the through holes 42 and the blind holes 38, and simultaneously, the inner ring of the inner ring 33 tightly abuts against the outer ring of the boss 37, and at this time, strong holding force is generated among the boss 37, the inner ring 33, the wedge ring 35, the outer ring 31, the blind holes 38 and the through holes 42, so that the upper flange 11 and the lower flange 10 are locked in an auxiliary manner.
As shown in fig. 6 to 8, the upper end of each fixing ring 39 is provided with a plurality of guide posts 41, each wedge ring 35 is provided with a plurality of guide holes 40, each guide post 41 is matched with and slidably connected to each guide hole 40, and in the process that the locking bolt 36 drives the wedge ring 35 to vertically slide downwards, the guide posts 41 slide in the guide holes 40, so as to prevent the wedge ring 35 from laterally deviating during sliding, so that the outer ring 31 and the inner ring 33 are uniformly stressed, and the stability of the holding force is ensured.
Like figure 1, jacking pipe joint 1 is put on the shelf and is equipped with the support piece that carries out auxiliary stay to platform 7, makes to distribute through support piece and forms a confined support system between the jacking pipe joint 1 of four angular points department of platform 7, and then improves the stability that jacking pipe joint 1 supported platform 7, improves construction safety.
As shown in fig. 1 and 4, the supporting member comprises diagonal rod connecting rings 14 welded on the peripheral side walls of the square steel cylinders 9, each diagonal rod connecting ring 14 is provided with a diagonal brace 3 in an inclined oppositely-pulling manner, the diagonal brace 3 is fixedly connected with the diagonal rod connecting rings 14 through a turn buckle 4, each square steel cylinder 9 is welded with a horizontal rod connecting port 15, each horizontal rod connecting port 15 is provided with a floor sweeping rod 5 in an inclined oppositely-pulling manner, the floor sweeping rod 5 is connected with a jack 2 through a bolt and a thread, the diagonal brace 3 is a steel pipe with a diameter of 48 and is obliquely oppositely-pulled at intervals of the vertical length of five jacking pipe sections 1, the floor sweeping rod 5 is a channel steel and has a vertical height of one meter with the ground of a foundation pit, the floor sweeping rod 5 can be simultaneously erected on the diagonal rod connecting rings 14, the diagonal brace 3 is obliquely oppositely-pulled at intervals of the vertical length of the jacking pipe sections 1, and the floor sweeping rod 5 is horizontally oppositely-pulled at the horizontal rod connecting rings 15, the transverse supporting force of the jacking pipe joints 1 distributed at four corner points of the platform 7 is improved, and a closed supporting system is formed between the jacking pipe joints 1.
As shown in fig. 1 and 4, each square steel cylinder 9 is located one layer of foundation pit ground and adjacent both sides are equipped with two relative dead levers 20 respectively, each dead lever 20 is gone up the vertical pressure head 21 that is equipped with, is equipped with the detection piece that is used for detecting jacking pipe coupling 1 straightness that hangs down on each pressure head 21, and when jacking pipe coupling 1 appeared the incline, pressure head 21 touched the detection piece this moment for the detection piece sends out the police dispatch newspaper, reminds constructor to overhaul the jacking joint, further improves construction safety.
Referring to fig. 1 and 4, the detecting member includes a plurality of bases 28 horizontally placed on the ground of the foundation pit, a supporting plate 26 is vertically disposed on each base 28, a fixed block 22 is disposed on one side of each supporting plate 26 away from the square steel cylinder 9, a movable groove 23 is disposed on each fixed block 22, a spring 24 is vertically disposed inside each movable groove 23, a shifting block 25 is disposed at one end of each spring 24 away from the movable groove 23, each shifting block 25 is slidably connected with the movable groove 23, a movable rod 44 is rotatably connected to one side of each supporting plate 26 away from the square steel cylinder 9, a movable block 27 is vertically disposed on each movable rod 44, one end of each movable block 27 away from the movable rod 44 is respectively abutted against the shifting block 25, two corresponding alarms 29 are disposed on each base 28, an inductor 30 is disposed on each alarm 29, each inductor 30 is disposed under the movable rod 44, each pressure head 21 is disposed over the movable rod 44, when jacking pipe coupling 1 the skew appears, it makes movable rod 44 rotate simultaneously to drive pressure head 21 touching movable rod 44 this moment, movable rod 44 drives movable rod 44 this moment and rotates, shifting block 25 slides in movable block 27 upper end this moment, the elasticity of borrowing spring 24 makes shifting block 25 stir movable block 27 rapidly and rotate this moment, movable block 27 drives movable rod 44 and rotates rapidly and contradict with inductor 30 this moment, transmit signal to alarm 29 through inductor 30 this moment, make alarm 29 send out the police dispatch sound and light, and then remind constructor jacking pipe coupling 1 to take place the skew.
As shown in FIGS. 1 and 4, the gradienter 43 for detecting the placing levelness of the base 28 is arranged on each base 28, and by adopting the technical scheme, the levelness of the base 28 placed on the ground of the foundation pit is ensured through the gradienter 43, so that the accuracy of the detection result of the detection piece is ensured.
The working principle is as follows: after the construction of the lower MJS pile, the connecting piece between the platform 7 and the jacking pipe joint 1 at the uppermost layer is disassembled, the jacks 2 distributed at four corner points of the platform 7 vertically and synchronously jack the transverse and longitudinal supporting beam 6 below the platform 7, the increased jacking pipe joint 1 is placed on the jacking pipe joint 1 at the uppermost layer, the tensioning piece is sleeved on the boss 27, the check bolt 26 is screwed, the wedge ring 25 vertically slides downwards in the process of screwing down the check bolt 26, the outer ring 21 and the inner ring 23 slide on the fixing block and are stressed to expand, the outer ring 21 and the wall of the through hole 32 and the wall of the blind hole 28 tightly abut, the inner ring 23 and the outer ring 27 tightly abut, and strong holding force is generated between the boss 27, the inner ring 23, the wedge ring 25, the outer ring 21, the blind hole 28 and the through hole 32, so as to assist in locking the upper flange 11 and the lower flange 10, at this time, the first gasket 19 is sleeved on the high-strength bolt 16, then the high-strength bolt 16 is screwed into the first bolt connecting hole 12 and the second bolt connecting hole 13, when the high-strength bolt 16 is screwed into the dead locking position, the first gasket 19 is pressed on the upper disc surface of the lower flange 10, the second gasket 18 is sleeved at one end of the high-strength bolt 16 far away from the first gasket 19, then the nut 17 is screwed into the high-strength bolt 16, when the nut 17 is screwed into the dead point position, the second gasket 18 is pressed on the lower disc surface of the upper flange 11, the upper flange 11 and the lower flange 10 are fixedly connected, then, the horizontal and longitudinal supporting beams 6 are synchronously and vertically lowered to the newly installed jacking pipe sections 1 through the jacks 2 to be connected, at the moment, the platform 7 is vertically jacked, MJS piles are arranged on the upper row in construction, and otherwise, the jacking pipe sections 1 are dismantled by the method, so that the height of the platform 7 can be reduced.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.
Claims (9)
1. A jacking platform (7) suitable for a foundation pit comprises a platform (7) horizontally placed inside the foundation pit, a protective net (8) arranged on the periphery of the platform (7), and a plurality of supporting beams (6) arranged at the bottom of the platform (7), and is characterized in that a plurality of jacking pipe joints (1) for supporting the platform (7) are arranged at the bottom of the supporting beams (6), each jacking pipe joint (1) is sequentially erected inside the foundation pit along the vertical direction, a plurality of jacks (2) for vertically jacking the platform (7) are vertically arranged at the bottom of the supporting beams (6), and the jacking pipe joints (1) and the jacks (2) are distributed at four corners of the platform (7);
each jacking pipe joint (1) comprises square steel cylinders (9) which are sequentially erected in a foundation pit along the vertical direction, an upper flange (11) is welded at the top of each square steel cylinder (9), a lower flange (10) is welded at the bottom of each square steel cylinder (9), and each upper flange (11) is abutted to the lower flange (10) and is fixedly connected with the lower flange through a connecting piece;
the connecting piece is including locating a plurality of first bolt connection hole (12) on each upper portion flange (11), each be equipped with a plurality of second bolt connection hole (13) on lower portion flange (10), each first bolt connection hole (12) aligns with second bolt connection hole (13) center, each first bolt connection hole (12) and second bolt connection hole (13) are through high strength bolt (16) threaded connection, each threaded connection has nut (17) on high strength bolt (16), each first gasket (19) and second gasket (18) have been cup jointed on high strength bolt (16), each first gasket (19) compress tightly on the last quotation of lower portion flange (10) through high strength bolt (16), each second gasket (18) compress tightly on the lower quotation of upper portion flange (11) through nut (17).
2. The jacking platform (7) suitable for the foundation pit as claimed in claim 1, wherein each upper flange (11) is provided with four opposite blind holes (38), each blind hole (38) is vertically provided with a boss (37) on the hole wall, each lower flange (10) is provided with four opposite through holes (42), each boss (37) extends into the through hole (42), each through hole (42) and boss (37) are aligned with the center of the blind hole (38), and each boss (37) is sleeved with an expansion member for assisting locking of the upper flange (11) and the lower flange (10).
3. The jacking platform (7) suitable for the foundation pit as claimed in claim 2, wherein the tensioning member comprises fixing rings (39) sleeved on outer rings of the bosses (37), the bottom ends of the fixing rings (39) are placed on the wall of the blind hole (38), an outer ring (31) and an inner ring (33) are connected to the tops of the fixing rings (39) in a sliding manner, a first through groove (32) is vertically formed in each outer ring (31), the outer ring of each outer ring (31) is abutted against the wall of the through hole (42) and the wall of the blind hole (38), a second through groove (34) is vertically formed in each inner ring (33), the inner ring of each inner ring (33) is abutted against the outer ring of the boss (37), a wedge ring (35) is connected to the inner ring of each outer ring (31) in a sliding manner, one side of each wedge ring (35) departing from the outer ring (31) is abutted against the outer ring of the inner ring (33), each wedge ring (35) internal thread is connected with check bolt (36), each one end threaded connection that wedge ring (35) was kept away from in check bolt (36) is on solid fixed ring (39).
4. The jacking platform (7) suitable for the foundation pit as claimed in claim 3, wherein a plurality of guide posts (41) are arranged at the upper end of each fixing ring (39), a plurality of guide holes (40) are arranged in each wedge ring (35), and each guide post (41) is matched with and slidably connected with each guide hole (40).
5. The jacking platform (7) suitable for the foundation pit as claimed in claim 1, wherein a support for auxiliary support of the platform (7) is erected on the jacking pipe section (1).
6. The jacking platform (7) suitable for the foundation pit as claimed in claim 5, wherein the support member comprises diagonal rod connecting rings (14) welded on the peripheral side walls of the square steel cylinders (9), each diagonal rod connecting ring (14) is provided with a cross brace (3) in an inclined and opposite-pulling manner, the cross brace (3) is fixedly connected with the diagonal rod connecting rings (14) through turn bolts (4), each square steel cylinder (9) is welded with a horizontal rod connecting port (15), each horizontal rod connecting port (15) is provided with a ground sweeping rod (5) in an horizontal and opposite-pulling manner, and the ground sweeping rods (5) are in threaded connection with the jacks (2) through bolts;
the cross braces (3) are steel pipes with the diameter phi of 48, the steel pipes are obliquely and oppositely pulled and erected every five layers of jacking pipe joints (1), the floor sweeping rods (5) are channel steel and are one meter vertical to the ground of the foundation pit, and the floor sweeping rods (5) can be erected on the inclined rod connecting rings (14) at the same time.
7. The jacking platform (7) for the foundation pit as claimed in claim 1, wherein each square steel cylinder (9) is located at one layer of the ground of the foundation pit, two opposite fixing rods (20) are respectively arranged at two adjacent sides of the ground of the foundation pit, a pressure head (21) is vertically arranged on each fixing rod (20), and a detection piece for detecting the verticality of the jacking pipe joint (1) is arranged on each pressure head (21).
8. The jacking platform (7) suitable for the foundation pit as claimed in claim 7, wherein the detection member comprises a plurality of bases (28) horizontally placed on the ground of the foundation pit, each base (28) is vertically provided with a support plate (26), one side of each support plate (26) departing from a square steel cylinder (9) is provided with a fixed block (22), each fixed block (22) is provided with a movable groove (23), a spring (24) is vertically arranged in each movable groove (23), one end of each spring (24) far away from the movable groove (23) is provided with a shifting block (25), each shifting block (25) is respectively connected with the movable groove (23) in a sliding manner, one side of each support plate (26) departing from the square steel cylinder (9) is rotatably connected with a movable rod (44), each movable rod (44) is vertically provided with a movable block (27), each one end that the movable block (27) kept away from movable rod (44) is inconsistent with shifting block (25) respectively, each be equipped with two relative sirens (29) on base (28) respectively, each be equipped with inductor (30) on siren (29), each inductor (30) are located under movable rod (44), each pressure head (21) are located directly over movable rod (44).
9. Jacking platform (7) suitable for a foundation pit according to claim 8, wherein each said base (28) is provided with a level gauge (43) for detecting the levelness of the base (28) in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111301815.XA CN113846827A (en) | 2021-11-04 | 2021-11-04 | Jacking platform suitable for foundation ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111301815.XA CN113846827A (en) | 2021-11-04 | 2021-11-04 | Jacking platform suitable for foundation ditch |
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| Publication Number | Publication Date |
|---|---|
| CN113846827A true CN113846827A (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111301815.XA Pending CN113846827A (en) | 2021-11-04 | 2021-11-04 | Jacking platform suitable for foundation ditch |
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| Country | Link |
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| CN (1) | CN113846827A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114412146A (en) * | 2022-01-19 | 2022-04-29 | 深圳市终生美丽化妆品有限公司 | A adjustable building platform for interior decoration building |
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Application publication date: 20211228 |
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