CN115262581B - Foundation pit supporting system using beam string - Google Patents
Foundation pit supporting system using beam string Download PDFInfo
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- CN115262581B CN115262581B CN202211033053.4A CN202211033053A CN115262581B CN 115262581 B CN115262581 B CN 115262581B CN 202211033053 A CN202211033053 A CN 202211033053A CN 115262581 B CN115262581 B CN 115262581B
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- stabilizing
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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
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The application discloses a foundation pit supporting system using a beam string, which belongs to the technical field of foundation pit supporting and comprises a cross beam and supporting bridges, wherein the cross beam is fixedly arranged on the side wall of a foundation pit, and two ends of the supporting bridges are arranged in one-to-one correspondence with two ends of the cross beam; the support bridge comprises six support rods, and the six support rods are sequentially arranged in pairs to form an arch bridge shape; one end of each of the two support rods is connected with the cross beam, two support rods connected with the cross beam correspondingly are arranged on the cross beam, and two groups of fixing mechanisms are arranged on the cross beam; the connecting parts of two adjacent supporting rods are respectively provided with a connecting mechanism; the connecting parts of two adjacent supporting rods are provided with stabilizing mechanisms; the junction of two adjacent supporting rods is provided with auxiliary mechanism. According to the application, the supporting effect of the beam string can be improved by arranging the stabilizing mechanism and the auxiliary mechanism.
Description
Technical Field
The application relates to the technical field of foundation pit support, in particular to a foundation pit support system using a beam string.
Background
In recent years, with the development of urban construction, underground spaces for various purposes have been developed and utilized in large cities around the world. The number of foundation pit engineering is continuously increased, the scale is also developed towards the directions of large and deep, and the foundation pit supporting mode is mainly changed to use the inner support.
The inner support maintenance structure can be divided into a concrete support and a profile steel support in terms of materials, but the concrete support has a plurality of limitations in construction installation and construction space, so that the profile steel support is more and more widely used in the maintenance structure. The string beam steel support system combines the characteristics of the traditional steel support and is improved so that the string beam steel support system is simpler in structure, more uniform in stress and large in construction space, and is a novel green deep foundation pit support technology for underground space excavation.
In the related art, the beam string supporting system comprises a plurality of supporting rods and a concrete beam, wherein the concrete beam is fixed in the side wall of the foundation pit, two supporting rods are fixedly connected with the concrete beam, and the rest supporting rods are sequentially and fixedly connected end to end between the two supporting rods to form an arch bridge-shaped supporting structure.
With respect to the related art described above, the inventors consider that there are the following drawbacks: when the area of the foundation pit is larger, the furthest distance between the arch bridge-shaped structure formed by the plurality of supporting rods and the concrete beam is larger, and the supporting effect of the beam string can be reduced under the influence of the gravity of the supporting rods.
Disclosure of Invention
In order to improve the supporting effect of the beam string, the application provides a foundation pit supporting system using the beam string.
The foundation pit supporting system using the beam string provided by the application adopts the following technical scheme:
the foundation pit supporting system using the beam string comprises a cross beam and supporting bridges, wherein the cross beam is fixedly arranged on the side wall of a foundation pit, and two ends of the supporting bridges are arranged in one-to-one correspondence with two ends of the cross beam;
the support bridge comprises six support rods, and the six support rods are sequentially arranged in pairs to form an arch bridge shape;
one end of each of the two supporting rods is connected with the cross beam, two corresponding supporting rods connected with the cross beam are arranged on the cross beam, and the two fixing mechanisms are used for fixing the supporting rods on the cross beam;
the connecting parts of the two adjacent supporting rods are respectively provided with a connecting mechanism, and the connecting mechanisms are used for connecting the two adjacent supporting rods;
the connecting parts of the two adjacent supporting rods are respectively provided with a stabilizing mechanism, and the stabilizing mechanisms are used for enhancing the stability between the supporting rods and the cross beam;
and the connection parts of the two adjacent supporting rods are respectively provided with an auxiliary mechanism, and the auxiliary mechanisms are used for supporting the supporting rods.
By adopting the technical scheme, in order to improve the supporting effect of the beam string, firstly, a supporting scheme is designed according to the size of a foundation pit, the positions of six supporting rods in a supporting bridge are set according to the supporting scheme, after the setting angles of the supporting rods are determined, two supporting rods are fixed on a cross beam by using two groups of fixing mechanisms, and then, the rest supporting rods are connected in sequence by using a plurality of groups of connecting mechanisms, so that the six supporting rods form an arch bridge shape to form a beam string structure; then, the stability between the six support rods and the cross beam is enhanced by utilizing a plurality of groups of stabilizing mechanisms, so that the stability between the support bridge and the cross beam can be improved, and the purpose of improving the support effect of the string beam is achieved; finally, the stability of the six support rods in the foundation pit is improved by utilizing a plurality of groups of auxiliary mechanisms, so that the support effect of the beam string can be further improved.
Preferably, each group of fixing mechanisms comprises an adjusting seat, an adjusting ball and a fixing block, an adjusting groove is formed in the cross beam, the adjusting ball is movably connected with the inner wall of the adjusting groove, and the adjusting seat is fixedly connected with the adjusting ball;
the adjusting seat is provided with a cavity, the fixed block is in sliding connection with the inner wall of the cavity, the adjusting seat is provided with a containing groove, and the supporting rod connected with the cross beam is in plug-in fit with the containing groove;
the support rod connected with the cross beam is provided with a fixing groove, and the fixing block is in plug-in fit with the fixing groove;
the fixed block is provided with an inclined plane, and the inclined plane of the fixed block is obliquely downwards arranged from one end close to the supporting rod to one end far away from the supporting rod;
the fixed block is fixedly connected with a spring, and the spring is fixedly connected with the inner wall of the cavity;
the adjusting seat is provided with an unlocking component which is used for facilitating the fixed block to be separated from the fixed groove.
By adopting the technical scheme, in order to fix the support rod on the cross beam, firstly, the adjusting seat is rotated to a proper angle according to the supporting scheme, the adjusting seat can be conveniently rotated by utilizing the action of the adjusting ball, then the support rod is moved towards the direction close to the adjusting seat, in the process that the support rod enters the accommodating groove, the support rod can be contacted with the fixed block at first, and under the action of the inclined plane of the fixed block, the support rod pushes the fixed block to move, and at the moment, the spring is compressed; when the support rod moves to the position that the fixed block is opposite to the fixed groove, the fixed block is in plug-in fit with the fixed groove under the action of the elasticity of the spring, so that the purpose of fixing the support rod on the adjusting seat can be achieved, and the support rod can be further fixed on the cross beam; when the support rod needs to be detached and replaced, the fixed block is separated from the fixed groove by the aid of the unlocking component, so that the support rod can be separated from the accommodating groove conveniently, and the purpose of conveniently detaching and replacing the support rod is achieved.
Preferably, the unlocking component comprises a first rack, a second rack and a first gear, wherein the first rack is fixedly connected with the fixed block, the first gear is rotationally connected with the inner wall of the cavity, and the second rack is slidingly connected with the inner wall of the cavity;
the first rack and the second rack are both meshed with the first gear.
Through adopting above-mentioned technical scheme, in order to be convenient for the fixed block break away from the fixed slot, when the needs dismantlement change bracing piece, at first remove the second rack, the first gear of second rack removal drive rotates, and first gear rotates and drives first rack and remove, and first rack removes and drives the fixed block and break away from the fixed slot to can reach the mesh that the fixed block break away from the fixed slot of being convenient for.
Preferably, each group of the connecting mechanisms comprises a connecting column and two connecting rings, two adjacent supporting rods are arranged in one-to-one correspondence with the two connecting rings, and the connecting rings are fixedly connected with the supporting rods;
both the connecting rings are in threaded connection with the connecting column.
Through adopting above-mentioned technical scheme, in order to make two adjacent bracing pieces be connected, at first make two go-between laminate mutually, then rotate bracing piece to suitable position according to supporting scheme, rotate the spliced pole afterwards for two go-between all with spliced pole threaded connection, thereby can make two go-between all with spliced pole relatively fixed, and then can reach the purpose that makes two adjacent bracing pieces be connected.
Preferably, the stabilizing mechanisms are arranged in one-to-one correspondence with the connecting mechanisms, each stabilizing mechanism comprises a stabilizing ring and a stabilizing rod, one end of each stabilizing rod is fixedly connected with the stabilizing ring, and the other end of each stabilizing rod is fixedly connected with the cross beam;
an elastic sheet is fixedly connected to the connecting column, and the elastic sheet is obliquely downwards arranged from one end close to the stabilizing ring to one end far away from the stabilizing ring;
and a ratchet is fixedly connected in the stabilizing ring, and the elastic piece is matched with the ratchet.
By adopting the technical scheme, in order to enhance the stability between the support rods and the cross beam, after the positions of two adjacent support rods are adjusted, the stabilizing rings are attached to one of the connecting rings, and then the connecting column is rotated, so that the connecting column is in threaded connection with the two connecting rings and is in sliding connection with the stabilizing rings; the elastic sheet is extruded in the process that the connecting column enters the stabilizing ring, and the elastic sheet is always contacted with the inner wall of the stabilizing ring under the elastic action of the elastic sheet, so that the connection strength between the connecting column and the stabilizing ring can be enhanced; under the effect of ratchet, can reduce the spliced pole and break away from the possibility of stabilizing ring to can reach the purpose that links to each other stabilizing ring and spliced pole, make stabilizing ring and two connecting rings relatively fixed, utilize the effect of stabilizer bar, reach the purpose of reinforcing stability between bracing piece and the crossbeam.
Preferably, the auxiliary mechanisms are arranged in one-to-one correspondence with the connecting mechanisms, each auxiliary mechanism comprises a connecting cylinder and a connecting rod, the connecting cylinders are rotationally connected with the connecting columns, the connecting rods are in sliding connection with the inner walls of the connecting cylinders, and the connecting rods are abutted against the bottom walls of the foundation pits;
the connecting cylinder is provided with a fixing component for fixing the connecting rod.
Through adopting above-mentioned technical scheme, in order to improve the stability between bracing piece and the foundation ditch, after adjusting two adjacent bracing pieces to suitable position, at first remove the connecting rod and make the diapire looks butt of connecting rod and foundation ditch, rotate the spliced pole afterwards, in the in-process that makes two go-between and stabilizing ring be connected with the spliced pole, utilize fixed subassembly's effect to fix the connecting rod in the connecting cylinder, thereby can utilize the connecting rod to improve the joint strength between bracing piece and the foundation ditch, reach the purpose that improves the stability between bracing piece and the foundation ditch.
Preferably, the fixing assembly comprises a first clamping plate, a second clamping plate and a bidirectional screw rod, the bidirectional screw rod is rotationally connected with the connecting cylinder, and the first clamping plate and the second clamping plate are in threaded connection with the bidirectional screw rod;
the first clamping plate and the second clamping plate can be attached to the connecting rod;
and a driving component for driving the bidirectional screw rod to rotate is arranged in the connecting cylinder.
By adopting the technical scheme, in order to fix the connecting rod in the connecting cylinder, the first clamping plate and the second clamping plate are not contacted with the connecting rod in a conventional state; in the process of enabling the two connecting rings and the stabilizing ring to be connected with the connecting column, the driving assembly is used for driving the bidirectional screw rod to rotate, the bidirectional screw rod rotates to drive the first clamping plate and the second clamping plate to be close to each other, and accordingly the first clamping plate and the second clamping plate are attached to the connecting rod, and the purpose of fixing the connecting rod in the connecting cylinder is achieved.
Preferably, the driving assembly comprises a driving bevel gear and a driven bevel gear, the driving bevel gear is fixedly connected with the connecting column, the driven bevel gear is fixedly connected with the bidirectional screw, and the driving bevel gear is meshed with the driven bevel gear.
Through adopting above-mentioned technical scheme, in order to can drive two-way screw rod rotation, at the in-process that makes two go-between and stabilizing ring be connected with the spliced pole, the spliced pole rotates and drives the initiative bevel gear and rotate, and initiative bevel gear rotates the driven bevel gear of drive rotation, and driven bevel gear rotates and drives two-way screw rod rotation to can reach the pivoted purpose of drive two-way screw rod.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in order to improve the supporting effect of the beam string, a supporting scheme is designed according to the size of a foundation pit, the positions of six supporting rods in a supporting bridge are set according to the supporting scheme, after the setting angle of the supporting rods is determined, two supporting rods are fixed on a cross beam by two groups of fixing mechanisms, and then the rest supporting rods are connected in sequence by a plurality of groups of connecting mechanisms, so that the six supporting rods form an arch bridge shape to form a beam string structure; then, the stability between the six support rods and the cross beam is enhanced by utilizing a plurality of groups of stabilizing mechanisms, so that the stability between the support bridge and the cross beam can be improved, and the purpose of improving the support effect of the string beam is achieved; finally, the stability of the six support rods in the foundation pit is improved by utilizing a plurality of groups of auxiliary mechanisms, so that the support effect of the beam string can be further improved;
2. in order to fix the support rod on the cross beam, the adjusting seat is rotated to a proper angle according to a supporting scheme, the adjusting seat can be conveniently rotated by utilizing the action of the adjusting ball, then the support rod is moved to a direction close to the adjusting seat, in the process that the support rod enters the accommodating groove, the support rod can be contacted with the fixed block at first, and under the action of the inclined plane of the fixed block, the support rod pushes the fixed block to move, and at the moment, the spring is compressed; when the support rod moves to the position that the fixed block is opposite to the fixed groove, the fixed block is in plug-in fit with the fixed groove under the action of the elasticity of the spring, so that the purpose of fixing the support rod on the adjusting seat can be achieved, and the support rod can be further fixed on the cross beam; when the support rod needs to be detached and replaced, the fixed block is separated from the fixed groove by the action of the unlocking component, so that the support rod can be separated from the accommodating groove conveniently, and the purpose of convenient detachment and replacement of the support rod is achieved;
3. in order to enhance the stability between the support rods and the cross beam, after the positions of two adjacent support rods are adjusted, firstly enabling the stabilizing ring to be attached to one of the connecting rings, and then rotating the connecting column, so that the connecting column is in threaded connection with the two connecting rings and simultaneously is in sliding connection with the stabilizing ring; the elastic sheet is extruded in the process that the connecting column enters the stabilizing ring, and the elastic sheet is always contacted with the inner wall of the stabilizing ring under the elastic action of the elastic sheet, so that the connection strength between the connecting column and the stabilizing ring can be enhanced; under the effect of ratchet, can reduce the spliced pole and break away from the possibility of stabilizing ring to can reach the purpose that links to each other stabilizing ring and spliced pole, make stabilizing ring and two connecting rings relatively fixed, utilize the effect of stabilizer bar, reach the purpose of reinforcing stability between bracing piece and the crossbeam.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a cross-sectional view of a cross-beam and an adjustment seat in an embodiment of the application.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is a cross-sectional view of a connecting ring and a stabilizing ring in an embodiment of the application.
Fig. 5 is an enlarged view at B in fig. 4.
Fig. 6 is a cross-sectional view of a connector barrel and connector post in an embodiment of the application.
Fig. 7 is an enlarged view at C in fig. 6.
Reference numerals illustrate:
1. a cross beam; 11. an adjustment tank; 2. a support bridge; 21. a support rod; 3. a fixing mechanism; 31. an adjusting seat; 32. an adjusting ball; 33. a fixed block; 34. a cavity; 35. a receiving groove; 36. a fixing groove; 37. a spring; 4. unlocking the assembly; 41. a first rack; 42. a second rack; 43. a first gear; 5. a connecting mechanism; 51. a connecting column; 52. a connecting ring; 53. an elastic sheet; 6. a stabilizing mechanism; 61. a stabilizing ring; 62. a stabilizer bar; 63. a ratchet; 7. an auxiliary mechanism; 71. a connecting cylinder; 72. a connecting rod; 73. a through hole; 74. a rotating shaft; 75. a limiting ring; 8. a fixing assembly; 81. a first clamping plate; 82. a second clamping plate; 83. a bidirectional screw; 9. a drive assembly; 91. a drive bevel gear; 92. driven bevel gears.
Detailed Description
The application is described in further detail below with reference to fig. 1-7.
The embodiment of the application discloses a foundation pit supporting system using a beam string. Referring to fig. 1, a foundation pit supporting system using a beam string comprises a cross beam 1 and a supporting bridge 2, wherein the supporting bridge 2 is integrally in an arch bridge shape, two ends of the supporting bridge 2 are arranged in one-to-one correspondence with two ends of the cross beam 1, and the supporting bridge 2 is integrally in axisymmetric arrangement; the support bridge 2 comprises six support rods 21, and the six support rods 21 are sequentially connected in pairs to form an arch bridge shape, wherein one end of each support rod 21 is connected with the cross beam 1 to form a beam string structure.
As shown in fig. 2 and 3, two groups of fixing mechanisms 3 are arranged on the cross beam 1, and the two groups of fixing mechanisms 3 are arranged in one-to-one correspondence with two support rods 21 connected with the cross beam 1; each group of fixing mechanisms 3 comprises an adjusting seat 31, an adjusting ball 32 and a fixing block 33, an adjusting groove 11 is formed in the cross beam 1, the adjusting ball 32 is movably connected with the inner wall of the adjusting groove 11, and the adjusting seat 31 is fixedly connected with the adjusting ball 32; the adjusting seat 31 is provided with a cavity 34, the fixed block 33 is in sliding connection with the inner wall of the cavity 34, the adjusting seat 31 is provided with a containing groove 35, the cavity 34 is communicated with the containing groove 35, and the supporting rod 21 connected with the cross beam 1 is in plug-in fit with the containing groove 35; a fixing groove 36 is formed in the support rod 21 connected with the cross beam 1, and the fixing block 33 is in plug-in fit with the fixing groove 36; the fixed block 33 is provided with an inclined surface, and the inclined surface of the fixed block 33 is obliquely downwards arranged from one end close to the supporting rod 21 to one end far away from the supporting rod 21; the fixed block 33 is fixedly connected with a spring 37, and the spring 37 is fixedly connected with the inner wall of the cavity 34.
Firstly, designing a supporting scheme according to the size of a foundation pit, setting the positions of six supporting rods 21 in a supporting bridge 2 through the supporting scheme, after determining the setting angles of the six supporting rods 21, firstly rotating two adjusting seats 31, and utilizing the action of an adjusting ball 32, so that the angles of the adjusting seats 31 can be conveniently adjusted according to different supporting schemes; after adjusting the adjusting seat 31 to a proper position, moving the supporting rod 21 into the accommodating groove 35, in the process that the supporting rod 21 enters the accommodating groove 35, the supporting rod 21 can be contacted with the fixed block 33 first, under the action of the inclined plane of the fixed block 33, the supporting rod 21 can push the fixed block 33 to move, at the moment, the spring 37 is compressed, when the supporting rod 21 moves to the position that the fixed block 33 is opposite to the fixed groove 36, under the action of the elasticity of the spring 37, the fixed block 33 is in plug-in fit with the fixed groove 36, so that the purpose of fixing the supporting rod 21 on the adjusting seat 31 can be achieved, and the purpose of connecting the supporting rod 21 with the cross beam 1 can be achieved.
As shown in fig. 3, the unlocking assemblies 4 are disposed on the two adjusting seats 31, each unlocking assembly 4 includes a first rack 41, a second rack 42 and a first gear 43, the first rack 41 is fixedly connected with the fixed block 33, the first gear 43 is rotatably connected with the inner wall of the cavity 34, the second rack 42 penetrates through the side wall of the cavity 34, the second rack 42 is slidably connected with the inner wall of the cavity 34, and the first rack 41 and the second rack 42 are meshed with the first gear 43.
When the support rod 21 needs to be detached and replaced, the second rack 42 is moved first, the second rack 42 is moved to drive the first gear 43 to rotate, the first gear 43 is rotated to drive the first rack 41 to move, and the first rack 41 moves to drive the fixed block 33 to be separated from the fixed groove 36, so that the purpose that the fixed block 33 is convenient to separate from the fixed groove 36 can be achieved, the support rod 21 can be convenient to separate from the accommodating groove 35, and the purpose that the support rod 21 is convenient to detach and replace is achieved.
As shown in fig. 4 and 5, the connection positions of two adjacent support rods 21 are respectively provided with a connection mechanism 5, each group of connection mechanisms 5 comprises a connection column 51 and two connection rings 52, the two adjacent support rods 21 and the two connection rings 52 are arranged in one-to-one correspondence, and the support rods 21 and the connection rings 52 are integrally formed; both connecting rings 52 are screwed with the connecting posts 51.
After two support rods 21 are fixed on the cross beam 1, the connecting ring 52 on the other support rod 21 is firstly attached to the connecting ring 52 on the support rod 21 fixed on the cross beam 1, then the support rod 21 is rotated to a proper position, and then the connecting column 51 is rotated, so that the two connecting rings 52 are in threaded connection with the connecting column 51, the two connecting rings 52 are fixed relative to the connecting column 51, the purpose of connecting the two adjacent support rods 21 can be achieved, and the six support rods 21 can form an arch bridge shape in sequence two by two.
As shown in fig. 4 and 5, the connection parts of two adjacent support rods 21 are respectively provided with a stabilizing mechanism 6, and five groups of stabilizing mechanisms 6 are arranged in one-to-one correspondence with five groups of connecting mechanisms 5; each group of stabilizing mechanism 6 comprises a stabilizing ring 61 and stabilizing rods 62, the lengths of the five stabilizing rods 62 are different according to the design of the supporting scheme, and the five stabilizing rods 62 are arranged perpendicular to the cross beam 1; one end of the stabilizer bar 62 is integrally formed with the stabilizer ring 61, and the other end of the stabilizer bar 62 is fixedly connected with the cross beam 1; four elastic pieces 53 are fixedly connected to the connecting column 51, and the four elastic pieces 53 are obliquely downwards arranged from one end close to the stabilizing ring 61 to one end far away from the stabilizing ring 61; the stabilizing ring 61 is provided with ratchet teeth 63 therein, and four elastic pieces 53 can be fitted with the ratchet teeth 63.
After the two connection rings 52 are attached, the support rod 21 is rotated to a proper position, then the stabilization ring 61 is placed under the two connection rings 52, and then the support column is rotated, and in the process of connecting the support column with the two connection rings 52 by screw threads, the connection column 51 is slidably connected with the stabilization ring 61; in the process that the connecting column 51 enters the stabilizing ring 61, the four elastic sheets 53 are extruded, and under the elastic action of the four elastic sheets 53, the four elastic sheets 53 are always contacted with the inner wall of the stabilizing ring 61, so that the connecting strength between the connecting column 51 and the stabilizing ring 61 can be enhanced; under the action of the ratchet 63, the possibility that the connecting column 51 is separated from the stabilizing ring 61 can be reduced, so that the purpose of connecting the stabilizing ring 61 and the connecting column 51 can be achieved, the stabilizing ring 61 and the two connecting rings 52 are relatively fixed, the purpose of enhancing the stability between the supporting rod 21 and the cross beam 1 is achieved by utilizing the action of the stabilizing rod 62, and the purpose of improving the supporting effect of the string beam can be achieved.
As shown in fig. 6 and 7, the connection parts of two adjacent support rods 21 are respectively provided with an auxiliary mechanism 7, and five groups of auxiliary mechanisms 7 are arranged in one-to-one correspondence with five groups of connecting mechanisms 5; each group of auxiliary mechanism 7 comprises a connecting cylinder 71 and a connecting rod 72, the connecting cylinders 71 are attached to the connecting columns 51, through holes 73 are formed in the connecting cylinders 71, rotating shafts 74 are fixedly connected to the connecting columns 51, the rotating shafts 74 penetrate through the connecting cylinders 71, and the rotating shafts 74 are rotatably connected with the inner walls of the through holes 73; a limiting ring 75 is fixedly connected to the rotating shaft 74, and the limiting ring 75 is rotationally connected with the connecting cylinder 71; one end of the connecting rod 72 is slidably connected to the inner wall of the connecting tube 71, and the other end of the connecting rod 72 is abutted to the bottom wall of the foundation pit.
In order to improve the stability between the support rods 21 and the foundation pit, after two adjacent support rods 21 are adjusted to a proper position, the connecting rods 72 are moved to enable the connecting rods 72 to be abutted against the bottom wall of the foundation pit, then the connecting columns 51 are rotated, and in the process of enabling the two connecting rings 52 and the stabilizing ring 61 to be connected with the connecting columns 51, the connecting rods 72 are fixed in the connecting cylinders 71, so that the connecting strength between the support rods 21 and the foundation pit can be improved by using the connecting rods 72, the purpose of improving the stability between the support rods 21 and the foundation pit is achieved, and the purpose of further improving the supporting effect of the beam string beam can be achieved; by the action of the stopper ring 75, the possibility that the connection post 51 is separated from the connection tube 71 can be reduced.
As shown in fig. 6 and 7, each connecting cylinder 71 is provided therein with a fixing assembly 8, the fixing assembly 8 includes a first clamping plate 81, a second clamping plate 82 and a bidirectional screw 83, the bidirectional screw 83 is rotatably connected with the inner wall of the connecting cylinder 71, the rotation directions of the threads at both ends of the bidirectional screw 83 are opposite, the first clamping plate 81 is in threaded connection with one end of the bidirectional screw 83, and the second clamping plate 82 is in threaded connection with the other end of the bidirectional screw 83; the opposite inner sides of the first clamping plate 81 and the second clamping plate 82 are arc-shaped, and the opposite inner sides of the first clamping plate 81 and the second clamping plate 82 can be attached to the connecting rod 72.
As shown in fig. 7, five sets of driving assemblies 9 are provided in the connection tube 71 corresponding to the five sets of fixing assemblies 8, each set of driving assemblies 9 includes a drive bevel gear 91 and a driven bevel gear 92, the drive bevel gear 91 is fixedly connected with the rotation shaft 74, the driven bevel gear 92 is fixedly connected with the bidirectional screw 83, and the drive bevel gear 91 is meshed with the driven bevel gear 92.
In order to fix the connecting rod 72 within the connecting cylinder 71, in a normal state, neither the first clamping plate 81 nor the second clamping plate 82 is in contact with the connecting rod 72; in the process of connecting the two connecting rings 52 and the stabilizing ring 61 with the connecting post 51, the connecting post 51 rotates to drive the drive bevel gear 91 to rotate, the drive bevel gear 91 rotates to drive the driven bevel gear 92 to rotate, the driven bevel gear 92 rotates to drive the bidirectional screw 83 to rotate, and the bidirectional screw 83 rotates to drive the first clamping plate 81 and the second clamping plate 82 to be close to each other, so that the first clamping plate 81 and the second clamping plate 82 are both abutted against the connecting rod 72, and the purpose of fixing the connecting rod 72 in the connecting cylinder 71 is achieved.
The implementation principle of the foundation pit supporting system applying the beam string in the embodiment of the application is as follows: firstly, designing a supporting scheme according to the size of a foundation pit, setting the positions of six supporting rods 21 in a supporting bridge 2 through the supporting scheme, after determining the setting angle of the supporting rods 21, firstly fixing two supporting rods 21 on a cross beam 1 by using two groups of fixing mechanisms 3, and then sequentially connecting the rest supporting rods 21 by using a plurality of groups of connecting mechanisms 5, so that the six supporting rods 21 form an arch bridge shape to form a beam string structure; then, the stability between the six support rods 21 and the cross beam 1 is enhanced by utilizing a plurality of groups of stabilizing mechanisms 6, so that the stability between the support bridge 2 and the cross beam 1 can be improved, and the purpose of improving the support effect of the string beam is achieved; finally, the stability of the six support rods 21 in the foundation pit is improved by utilizing the plurality of groups of auxiliary mechanisms 7, so that the support effect of the beam string can be further improved.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (3)
1. A foundation pit support system using beam string, characterized in that: the foundation pit supporting device comprises a cross beam (1) and supporting bridges (2), wherein the cross beam (1) is fixedly arranged on the side wall of a foundation pit, and two ends of the supporting bridges (2) are arranged in one-to-one correspondence with two ends of the cross beam (1);
the support bridge (2) comprises six support rods (21), and the six support rods (21) are sequentially arranged in pairs to form an arch bridge shape;
one end of each of the two support rods (21) is connected with the cross beam (1), two groups of fixing mechanisms (3) are arranged on the cross beam (1) corresponding to the two support rods (21) connected with the cross beam (1), and the fixing mechanisms (3) are used for fixing the support rods (21) on the cross beam (1);
the connecting parts of two adjacent support rods (21) are respectively provided with a connecting mechanism (5), and the connecting mechanisms (5) are used for connecting the two adjacent support rods (21);
the connection parts of two adjacent support rods (21) are provided with stabilizing mechanisms (6), and the stabilizing mechanisms (6) are used for enhancing the stability between the support rods (21) and the cross beam (1);
an auxiliary mechanism (7) is arranged at the joint of two adjacent support rods (21), and the auxiliary mechanism (7) is used for supporting the support rods (21);
each group of connecting mechanisms (5) comprises a connecting column (51) and two connecting rings (52), two adjacent supporting rods (21) are arranged in one-to-one correspondence with the two connecting rings (52), and the connecting rings (52) are fixedly connected with the supporting rods (21);
the stabilizing mechanisms (6) are arranged in one-to-one correspondence with the connecting mechanisms (5), each stabilizing mechanism (6) comprises a stabilizing ring (61) and a stabilizing rod (62), one end of each stabilizing rod (62) is fixedly connected with the stabilizing ring (61), and the other end of each stabilizing rod (62) is fixedly connected with the cross beam (1);
an elastic sheet (53) is fixedly connected to the connecting column (51), and the elastic sheet (53) is obliquely downwards arranged from one end close to the stabilizing ring (61) to one end far away from the stabilizing ring (61);
a ratchet (63) is fixedly connected in the stabilizing ring (61), and the elastic piece (53) is matched with the ratchet (63);
both the connecting rings (52) are in threaded connection with the connecting column (51);
the auxiliary mechanisms (7) are arranged in one-to-one correspondence with the connecting mechanisms (5), each auxiliary mechanism (7) comprises a connecting cylinder (71) and a connecting rod (72), the connecting cylinders (71) are rotationally connected with the connecting columns (51), through holes (73) are formed in the connecting cylinders (71), rotating shafts (74) are fixedly connected to the connecting columns (51), the rotating shafts (74) penetrate through the connecting cylinders (71), and the rotating shafts (74) are rotationally connected with the inner walls of the through holes (73); a limiting ring (75) is fixedly connected to the rotating shaft (74), the limiting ring (75) is rotationally connected with the connecting cylinder (71), the connecting rod (72) is slidably connected with the inner wall of the connecting cylinder (71), and the connecting rod (72) is abutted against the bottom wall of the foundation pit;
the connecting cylinder (71) is provided with a fixing component (8) for fixing the connecting rod (72);
the fixing assembly (8) comprises a first clamping plate (81), a second clamping plate (82) and a bidirectional screw rod (83), the bidirectional screw rod (83) is rotationally connected with the connecting cylinder (71), and the first clamping plate (81) and the second clamping plate (82) are in threaded connection with the bidirectional screw rod (83);
the first clamping plate (81) and the second clamping plate (82) can be attached to the connecting rod (72);
a driving component (9) for driving the bidirectional screw rod (83) to rotate is arranged in the connecting cylinder (71);
the driving assembly (9) comprises a driving bevel gear (91) and a driven bevel gear (92), the driven bevel gear (92) is fixedly connected with the bidirectional screw rod (83), the driving bevel gear (91) is meshed with the driven bevel gear (92), and the driving bevel gear (91) is fixedly connected with the rotating shaft (74).
2. A foundation pit support system using beam string as defined in claim 1, wherein: each group of fixing mechanisms (3) comprises an adjusting seat (31), an adjusting ball (32) and a fixing block (33), an adjusting groove (11) is formed in the cross beam (1), the adjusting ball (32) is movably connected with the inner wall of the adjusting groove (11), and the adjusting seats (31) are fixedly connected with the adjusting balls (32);
a cavity (34) is formed in the adjusting seat (31), the fixed block (33) is in sliding connection with the inner wall of the cavity (34), a containing groove (35) is formed in the adjusting seat (31), and the supporting rod (21) connected with the cross beam (1) is in plug-in fit with the containing groove (35);
a fixing groove (36) is formed in the supporting rod (21) connected with the cross beam (1), and the fixing block (33) is in plug-in fit with the fixing groove (36);
the fixed block (33) is provided with an inclined plane, and the inclined plane of the fixed block (33) is obliquely downwards arranged from one end close to the supporting rod (21) to one end far away from the supporting rod (21);
a spring (37) is fixedly connected to the fixed block (33), and the spring (37) is fixedly connected with the inner wall of the cavity (34);
the adjusting seat (31) is provided with an unlocking component (4) which is used for facilitating the fixed block (33) to be separated from the fixed groove (36).
3. A foundation pit support system using beam string as defined in claim 2, wherein: the unlocking assembly (4) comprises a first rack (41), a second rack (42) and a first gear (43), wherein the first rack (41) is fixedly connected with the fixed block (33), the first gear (43) is rotationally connected with the inner wall of the cavity (34), and the second rack (42) is slidingly connected with the inner wall of the cavity (34);
the first rack (41) and the second rack (42) are both meshed with the first gear (43).
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| CN202211033053.4A CN115262581B (en) | 2022-08-26 | 2022-08-26 | Foundation pit supporting system using beam string |
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| CN202211033053.4A CN115262581B (en) | 2022-08-26 | 2022-08-26 | Foundation pit supporting system using beam string |
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| CN115262581B true CN115262581B (en) | 2023-09-08 |
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