CN112900448A - Foundation ditch support is with slope prestressed anchorage device of no steel waist rail - Google Patents
Foundation ditch support is with slope prestressed anchorage device of no steel waist rail Download PDFInfo
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- CN112900448A CN112900448A CN202110071998.4A CN202110071998A CN112900448A CN 112900448 A CN112900448 A CN 112900448A CN 202110071998 A CN202110071998 A CN 202110071998A CN 112900448 A CN112900448 A CN 112900448A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 45
- 239000010959 steel Substances 0.000 title claims abstract description 45
- 238000004873 anchoring Methods 0.000 claims abstract description 33
- 239000002689 soil Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims description 44
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000005498 polishing Methods 0.000 description 9
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a side slope prestress anchoring device without a steel waist beam for foundation pit support, which comprises a positioning plate, an anchor cable, an anchoring section and a steel net rack, wherein the steel net rack is paved on the outer surface of a side slope and is shallowly inserted into a rock-soil layer to fix the side slope, the positioning plate is fixed on the outer surface of the steel net rack corresponding to a drilled hole to perform auxiliary positioning and guiding on the anchor cable entering the drilled hole, the anchoring section is arranged at one end of the anchor cable deep drilled hole and is fixed with the inner part of the rock-soil layer, a plurality of groups of fixing devices are arranged in the anchoring section in a linear arrangement mode, each group of fixing devices are spaced at a certain distance, and an inclined fixing device is further fixed at the right.
Description
Technical Field
The invention relates to the technical field of foundation pit support, in particular to a slope prestress anchoring device without a steel waist beam for foundation pit support.
Background
Prestressed anchoring is a measure for increasing the stability of a retaining structure or a rock-soil body by using an anchoring method. The method is that a drilling hole penetrates through a sliding surface which is possible to slide or has already slid, one end of a steel cable is fixed in a stable rock-soil body at the bottom of the hole, then the steel cable is tensioned to generate certain prestress, the other end of the steel cable is fixed on the surface of the rock-soil body or a retaining structure, the rock-soil body or the retaining structure which is possible to slide is compressed by the resilience force of a steel bar so as to increase the shear strength on the sliding surface, thereby achieving the purpose of improving the stability of the rock-soil body or the retaining structure, after the existing side slope prestressed anchoring device is used for supporting a foundation pit, when the foundation pit works for a long time, an anchoring section is tensioned by a side slope, the anchoring section is easy to deform due to infirm fixation, and the pressure of the external rock-soil on the anchoring section can cause the slippage, so as to cause the prestress loss, so as to cause the inclination of an anchor rope or an, and potential safety hazards are generated to the construction operation in the foundation pit.
Therefore, the technical personnel in the field provide a slope prestressed anchorage device of a non-steel waist beam for foundation pit support, so as to solve the problems in the background technology.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a slope prestress anchoring device without a steel waist beam for foundation pit supporting comprises a positioning plate, an anchor rope, an anchoring section and a steel net rack, wherein the steel net rack is paved on the outer surface of a slope and is shallowly inserted into a rock-soil layer to fix the slope, the positioning plate is fixed on the outer surface of the steel net rack corresponding to a drilled hole to assist in positioning and guiding the anchor rope entering the drilled hole, and the anchoring section is arranged at one end, deep into the drilled hole, of the anchor rope and is fixed with the inner part of the rock-soil layer;
fixing devices are arranged in the anchoring section, a plurality of groups of fixing devices are arranged in a linear mode, and each group of fixing devices are spaced at a certain distance;
and an inclined fixing device is further fixed at the right end of the anchoring section.
As a preferred technical scheme of the invention, the fixing device comprises an upper tensioning plate, a lower tensioning plate, a guide ring frame and a left tensioning assembly and a right tensioning assembly, wherein the upper end and the lower end of the upper tensioning plate and the lower end of the lower tensioning plate are vertically fixed with the inner wall of the anchor cable;
a limiting disc is arranged on the right side of the left and right tensioning assemblies in parallel, a drill bit slide way is arranged in the limiting disc, a guide sliding ring is arranged in the limiting disc, a fixing assembly is fixed on the upper end face of the guide sliding ring, and a connecting wheel ring is arranged at the transverse axis of the limiting disc;
and auxiliary rollers are mounted at the ends, far away from the axle center, of the guide ring frame and the inner parts of the upper tensioning plate and the lower tensioning plate, steel cables are wound on the auxiliary rollers, and the right ends of the steel cables are hinged with the left end face of the guide sliding ring.
As a preferred technical scheme of the invention, the anchoring section comprises a fixed shell, a telescopic cylinder and a telescopic rod, wherein the left half shell and the right half shell of the fixed shell are in a circular truncated cone shape, the telescopic cylinder is installed in the right half shell in a staggered manner, the telescopic cylinder is provided with the telescopic rod, the lower end of the telescopic rod is fixed on the inner wall of the left half shell, and a fixing component is fixed at the output end of the telescopic rod;
the telescopic cylinders positioned on the side arc surface of the right half shell are arranged in 6 groups in a circumferential manner, and the telescopic cylinders positioned in the center of the telescopic cylinders and the anchor cables share the same axis;
the left side of the fixed shell is also provided with a pressure early warning device, and the outer side surface of the pressure early warning device is provided with a pressure measuring device.
According to a preferred technical scheme, the fixing assembly comprises a drill bit, a polishing ring and a material conveying box, the upper end and the lower end of the material conveying box are rotatably connected with the lower end face of a hollow disc fixed on the bottom end face of the polishing ring, the outer side face of a guide sliding ring is fixedly connected, the upper end face ring of the polishing ring is fixedly connected with the bottom end face ring of the drill bit, and a material storage cavity, a material conveying cavity and a crushing filter cavity are sequentially arranged in the material conveying box from bottom to top;
the shaft center of the cavity in the material conveying box is provided with a guide shaft, an auxiliary shell is arranged on the outer side of the guide shaft, a transverse fixing disc is arranged at the lower end close to the material conveying cavity, a motor II is arranged in the transverse fixing disc, a rotating shaft is fixed at the output end of the motor II, a main bevel gear is fixed at the right end of the rotating shaft, the main bevel gear is meshed with a secondary bevel gear fixed at the bottom end of a material conveying rotary vane column, and the inner and outer annular walls of an annular disc surface rotatably connected with the upper end of the material conveying rotary vane column are rotatably connected with the outer side wall of the rotary shell and the inner side wall of the;
rotatory shell bottom inside wall is fixed with spacing rotatory shell outside wall, spacing rotatory shell inside wall rotates with the auxiliary housing lateral wall to be connected, and the operation that slides from top to bottom, is located the spur gear strip of the inboard wall mounting in the sunken chamber of spacing rotatory shell is connected with the spur gear meshing that fixes the motor output end on the deflector.
As a preferable technical scheme of the invention, the bottom end surface ring of the rotary shell is rotationally connected with an annular sliding groove arranged on the upper end surface of the transverse fixed disk, wherein an arc-shaped fan hole is formed in the inclined rotary shell positioned in the crushing and filtering cavity, a first filter screen is arranged in the arc-shaped fan hole, and the upper end surface of the rotary shell is fixedly connected with the bottom end surface of the inner side of the hollow disk.
As a preferable technical solution of the present invention, a crushing device is disposed in a corresponding inner chamber of the filter screen.
According to a preferable technical scheme, a filter box fixed on the outer side wall of the auxiliary shell is arranged inside the polishing ring, material channels are formed in the left side of the upper end and the right side of the lower end of the filter box, a second filter screen is arranged at the lower end of the material channel on the left side of the upper end, the right end of the filter screen is fixedly connected with the left end of a vibration sleeve, and the vibration sleeve is sleeved on the outer side of a vibration rod driven by an oscillator.
As a preferred technical scheme of the present invention, a bar-shaped sliding groove matched with the guide plate for sliding is formed on the outer side of the guide shaft, and the guide shaft and the auxiliary housing are both of a telescopic structure.
As a preferred technical scheme of the invention, the drill comprises an outer conical shell, an inner conical shell and supporting columns, wherein fan-shaped arc plates are fixed at the lower end of the outer conical shell, a plurality of groups of fan-shaped arc plates are arranged in a circumferential manner, feeding holes with the same size as the fan-shaped arc plates are reserved between the adjacent fan-shaped arc plates, the left side wall and the right side wall of the adjacent fan-shaped arc plates are fixed through the supporting plates, and the fan-shaped arc plates and the inner conical shell are fixed through the supporting columns.
As a preferred technical scheme of the invention, the pressure measuring device comprises an elastic telescopic disc, a compression bracket and a sensing surface, wherein a limiting block is arranged on the outer side of the elastic telescopic disc, the central plane of the bottom end of the compression bracket is fixed with the upper end of the elastic telescopic disc, the left end and the right end of the compression bracket are hinged with a rotating wheel, and the sensing surface is fixed on the upper surface of the compression bracket.
Compared with the prior art, the invention provides a slope prestress anchoring device without a steel waist beam for foundation pit support, which has the following beneficial effects:
1. according to the invention, the steel cable is used for tensioning the fixing component 5 to drill into the rock-soil layer, so that a plurality of tree roots are formed to be pricked into the rock-soil layer, therefore, a strong grabbing fixing force is formed, in the drilling process, the drilled rock-soil layer crushed aggregates are guided and introduced, the interior of a cavity formed after the self-advancing is filled, namely, the density of the fixing device is increased, so that the fixing is firmer, and then the steel cable is automatically pulled back and pushed up by combining the left tensioning component, the right tensioning component and the upper tensioning plate and the lower tensioning plate, so that the steel cable can be ensured to be in a strong tensioning performance in real time, and the prestress generated by the steel cable can reach an optimal value.
2. According to the invention, the pressure values of the fixed component and the anchor cable shell which are applied to the external rock-soil layer are monitored in real time through the probe and the pressure measuring device, the anchor cable is subjected to unstable pressure due to the change of the internal structure of the rock-soil layer, and the structure can well monitor the internal structure of the rock-soil layer in the foundation pit in real time, so that the sudden collapse of the side slope is avoided, and timely evacuation personnel are not required or the side slope is reinforced again, therefore, the structure not only improves the fixed strength of the side slope, but also provides safety guarantee for the working personnel in the foundation pit.
Drawings
FIG. 1 is a schematic structural view of a slope pre-stressed anchoring device according to the present invention;
FIG. 2 is an enlarged view of a portion of the fixing device of the present invention;
FIG. 3 is an enlarged cross-sectional view of the fastening device of the present invention;
FIG. 4 is an enlarged view of the fixing assembly structure of the present invention;
FIG. 5 is an enlarged view of a partial structure of the anchoring section of the present invention;
FIG. 6 is an enlarged view of the structure at B of the present invention;
FIG. 7 is an enlarged view of the structure at A of the present invention;
FIG. 8 is an enlarged schematic view of the construction of the drill bit of the present invention;
FIG. 9 is an enlarged view of the pressure measuring device according to the present invention;
in the figure: 1. positioning a plate; 2. an anchor cable; 3. an anchoring section; 4. a steel net frame; 5. a fixing device; 6. a pressure measuring device; 7. a pressure precaution device; 8. a fixing assembly; 9. a limiting disc; 10. a connecting wheel ring; 11. a crushing device; 51. an upper and lower tension plate; 52. a guide ring frame; 53. a left and right tensioning assembly; 54. a guide slip ring; 31. a stationary housing; 32. a telescopic cylinder; 33. a telescopic rod; 81. a drill bit; 82. grinding a ring; 83. a material conveying box; 84. a guide shaft; 85. an auxiliary housing; 86. a limiting rotary shell; 87. a first motor; 88. a first filter screen; 89. a hollow disc; 810. a guide plate; 811. rotating the housing; 812. transferring the material to a rotary vane column; 813. a rotating shaft; 814. a second motor; 815. a filter box; 816. an oscillator; 817. a vibrating sleeve; 818. a second filter screen; 819. an outer conical shell; 820. an inner conical shell; 821. a support pillar; 822. a sector arc plate; 823. and a support plate.
Detailed Description
Referring to fig. 1, the present invention provides a technical solution: a slope prestress anchoring device without a steel waist beam for foundation pit supporting comprises a positioning plate 1, an anchor rope 2, an anchoring section 3 and a steel net rack 4, wherein the steel net rack 4 is laid on the outer surface of a slope and is shallowly inserted into a rock-soil layer to fix the slope, the positioning plate 1 is fixed on the outer surface of a steel net rack 4 corresponding to a drilled hole to perform auxiliary positioning and guiding on the anchor rope 2 entering the drilled hole, and the anchoring section 3 is arranged at one end, deep into the drilled hole, of the anchor rope 2 and is fixed with the inner part of the rock-soil layer;
fixing devices 5 are arranged in the anchoring section 3, a plurality of groups of fixing devices are arranged in a linear mode, and each group of fixing devices 5 are spaced at a certain distance;
and an inclined fixing device is further fixed at the right end of the anchoring section 3.
Referring to fig. 2, 3 and 4, in this embodiment, the fixing device 5 includes an upper and lower tensioning plate 51, a guide ring frame 52 and a left and right tensioning assembly 53, the upper and lower ends of the upper and lower tensioning plate 51 are vertically fixed to the inner wall of the anchor cable 2, the left and right tensioning assembly 53 is fixed to the left side wall of the center of the upper and lower tensioning plate 51, and the right side surface of the guide ring frame 52 is hinged to the left end of a connecting rod hinged to the output end of the left and right tensioning assembly 53;
a limiting disc 9 is arranged on the right side of the left and right tensioning assemblies 83 in parallel, a drill slide is arranged in the limiting disc 9, a guide sliding ring 54 is arranged in the limiting disc 9, a fixing assembly 8 is fixed on the upper end face of the guide sliding ring 54, and a connecting wheel ring 10 is arranged at the transverse axis of the limiting disc 9;
auxiliary rollers are respectively arranged at one ends, far away from the axis, of the guide ring frame 52 and the upper and lower tensioning plates 51, a steel cable is wound on each auxiliary roller, and the right end of each steel cable is hinged with the left end face of the guide sliding ring 54;
as the best embodiment, eight groups of connecting rods in the left and right tensioning assemblies are arranged in a circumferential manner, transmission shaft channels are arranged at the axes of the left and right tensioning assemblies 83, the upper and lower tensioning plates 51 and the limiting disc 9, and a cable channel is arranged on the limiting disc 9, so that the parallel state of the cable is ensured, and the prestress generated by the cable reaches the best value.
Referring to fig. 5, in this embodiment, the anchoring section 3 includes a fixed housing 31, a telescopic cylinder 32 and a telescopic rod 33, the left and right half housings of the fixed housing 31 are in a circular truncated cone shape, the telescopic cylinder 32 is installed in the right half housing in a staggered manner, the telescopic cylinder 32 is provided with the telescopic rod 33, the lower end of the telescopic rod 33 is fixed on the inner wall of the left half housing, and the output end of the telescopic rod 33 is fixed with the fixing component 8;
the telescopic cylinders 32 on the right semi-shell side arc surface are arranged in 6 groups in a circumferential manner, and the telescopic cylinders 32 in the center position share the axis with the anchor cable 2;
the left side of fixed casing 31 still is provided with pressure precaution device 7, pressure measurement device 6 is installed to 7 lateral surfaces of pressure precaution device, surveys the pressure that comes from outside ground layer through pressure measurement device 6, reaches and takes notes and judge whether in the scope that exceeds the safe pressure value in pressure precaution device 7, and as best embodiment, but pressure precaution device 7, pressure measurement device 6 equidistance set up the multiunit, are convenient for improve the pressure survey precision, prevent that foundation ditch side slope collapses.
In this embodiment, the fixing assembly 8 includes a drill bit 81, a polishing ring 82 and a material transfer box 83, the upper end and the lower end of the material transfer box 83 are rotatably connected with the lower end face of a hollow disc 89 fixed on the bottom end face of the polishing ring 82, the outer side face of the guide slip ring 54 is fixedly connected, the upper end face ring of the polishing ring 82 is fixedly connected with the bottom end face ring of the drill bit 81, wherein a material storage cavity, a material transfer cavity and a crushing filter cavity are sequentially arranged in the material transfer box 83 from bottom to top;
a guide shaft 84 is arranged at the axis of the cavity in the material conveying box 83, an auxiliary shell 85 is arranged on the outer side of the guide shaft 84, a transverse fixing disc is arranged at the lower end close to the material conveying cavity, a motor II 814 is arranged in the transverse fixing disc, a rotating shaft 813 is fixed at the output end of the motor II 814, a main bevel gear is fixed at the right end of the rotating shaft 813, the main bevel gear is meshed with a slave bevel gear fixed at the bottom end of a material conveying rotary blade column 812, the inner and outer annular walls of an annular disc surface rotatably connected with the upper end of the material conveying rotary blade column 812 are rotatably connected with the outer side wall of the rotary shell 811, and the inner side wall of the material conveying box;
the inner side wall of the bottom end of the rotating shell 811 is fixed with the outer side wall of the limiting rotating shell 86, the inner side wall of the limiting rotating shell 86 is rotatably connected with the outer side wall of the auxiliary shell 85 and can slide up and down, and a spur gear rack arranged on the inner side wall of a concave cavity of the limiting rotating shell 86 is meshed and connected with a spur gear fixed at the output end of a motor I87 fixed on the guide plate 810;
as a best embodiment, a pressure probe is also arranged on the outer side wall of the material conveying box 83 positioned outside the material conveying cavity, and is used for monitoring the pressure value applied by the rock-soil layer towards the outside of the fixed component 8 and transmitting the pressure value to the pressure early-warning device 7;
as a preferred embodiment, the outer side wall of the grinding ring 82 is provided with a micro grinding block, so that the drilled hole wall is smooth and firm.
Referring to fig. 6 and 7, in this embodiment, the bottom surface ring of the rotating housing 811 is rotatably connected to the annular sliding groove formed in the upper end surface of the transverse fixing disc, wherein the rotating housing 811 inclined in the pulverizing filter chamber is provided with an arc-shaped fan hole, a first filter screen 88 is installed in the arc-shaped fan hole, and the upper end surface of the rotating housing 811 is fixedly connected to the bottom end surface of the inner side of the hollow disc 89.
In this embodiment, the crushing device 11 is disposed in the inner chamber corresponding to the first filter screen 88.
In this embodiment, the polishing ring 82 is internally provided with a filter box 815 fixed on the outer side wall of the auxiliary housing 85, the left side of the upper end and the right side of the lower end of the filter box 815 are both provided with a material channel, the lower end of the material channel on the left side of the upper end is provided with a second filter screen 818, the right end of the filter screen 818 is fixedly connected with the left end of a vibration sleeve 817, and the vibration sleeve 817 is sleeved outside a vibration rod driven by the oscillator 816.
In this embodiment, a bar-shaped sliding slot that is matched with the guiding plate 810 to slide is formed on the outer side of the guiding shaft 84, and the guiding shaft 84 and the auxiliary housing 85 are both of a telescopic structure.
Referring to fig. 8, in this embodiment, the drill 81 includes an outer conical shell 819, an inner conical shell 820, and a support column 821, the fan-shaped arc plates 822 are fixed to the lower end of the outer conical shell 819, and are arranged in a plurality of groups in a circumferential manner, a feed hole having the same size as the fan-shaped arc plates 822 is reserved between adjacent fan-shaped arc plates 822, the left and right side walls of adjacent fan-shaped arc plates 822 are fixed by a support plate 823, and the fan-shaped arc plates 822 and the inner conical shell 820 are fixed by the support column 821.
Referring to fig. 9, in this embodiment, the pressure measuring device 6 includes an elastic expansion disc 61, a compression bracket 63, and a sensing surface 64, a limit block 62 is disposed on an outer side of the elastic expansion disc 61, a bottom center plane of the compression bracket 63 is fixed to an upper end of the elastic expansion disc 61, left and right ends of the compression bracket 63 are hinged to a rotating wheel 65, and the sensing surface 64 is fixed to an upper surface of the compression bracket 63.
In the specific implementation, the anchor cable 2 is guided into the drilled hole in the positioning plate, the fixing component 8 is driven to drill a hole in the rock-soil layer and fixed through the telescopic rod 33 at the end of the anchoring section 3, and the telescopic cylinder 32 is driven to be fixed, wherein the first motor 87 drives the limiting rotary shell 86 to rotate around the auxiliary shell 85, the rotary shell 811, the polishing ring 82 and the drill bit 81 are driven to rotate, the rock-soil layer is drilled, the drilled rock-soil layer crushed materials are shaken and conveyed into the crushing device 11 to be crushed through the second filter plate 818 and the oscillator 816, meanwhile, the second motor 814 drives the material conveying rotary vane column 812 to convey the rock-soil layer crushed materials into the material storage cavity, the drilled rock-soil layer crushed materials gradually fill and fix the space generated after the fixing component 8 advances, and the fixing components in the fixing device 5 are expanded outwards to drill the rock-soil layer through the steel cable on the rock-soil fixing device 5, the ground layer crushed aggregates drilled are gradually filled in the fixing assemblies 8 and are left in the empty channel inside the limiting disc 9 after entering the ground layer, after the steel cable is completely stretched, the steel cable has a tendency of upward expansion through the upper tensioning plate 51 and the lower tensioning plate 51, the left tensioning assembly 53 and the right tensioning assembly 53 have a tendency of inward contraction, the steel cable is further strengthened and stretched, and finally the outer steel cable is connected with the steel mesh frame 4, so that the steel cable generates stronger prestress, the foundation pit slope is fixed, and the pressure monitoring is performed on the fixed anchor cable shell through the pressure early-warning device 7.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention, and the technical solution and the inventive concept thereof should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a foundation ditch support is with slope prestressed anchorage device of no steel waist rail, its includes locating plate (1), anchor rope (2), anchor section (3) and steel net rack (4), its characterized in that: the steel net rack (4) is paved on the outer surface of the side slope, the steel net rack is shallowly inserted into the rock-soil layer to fix the side slope, the positioning plate (1) is fixed on the outer surface of the steel net rack (4) corresponding to the drilled hole to perform auxiliary positioning and guiding on the anchor cable (2) entering the drilled hole, and the anchoring section (3) is arranged at one end of the anchor cable (2) penetrating into the drilled hole and fixed with the inner part of the rock-soil layer;
fixing devices (5) are arranged in the anchoring section (3), a plurality of groups of fixing devices are arranged in a linear arrangement mode, and each group of fixing devices (5) are spaced at a certain distance;
and an inclined fixing device is further fixed at the right end of the anchoring section (3).
2. The slope prestressed anchorage device of the steel-free wale for foundation pit support according to claim 1, wherein: the fixing device (5) comprises an upper tensioning plate, a lower tensioning plate (51), a guide ring frame (52) and a left tensioning assembly and a right tensioning assembly (53), wherein the upper end and the lower end of the upper tensioning plate and the lower tensioning plate (51) are vertically fixed with the inner wall of the anchor cable (2), the left tensioning assembly and the right tensioning assembly (53) are fixed on the left side wall of the center of the upper tensioning plate and the lower tensioning plate (51), and the right side surface of the guide ring frame (52) is hinged with the left end of a connecting rod hinged with the output end of the left tensioning assembly and the;
a limiting disc (9) is arranged on the right side of the left and right tensioning assemblies (83) in parallel, a drill bit slide way is arranged in the limiting disc (9), a guide slide ring (54) is arranged in the limiting disc (9), a fixing assembly (8) is fixed on the upper end face of the guide slide ring (54), and a connecting wheel ring (10) is arranged at the transverse axis of the limiting disc (9);
auxiliary rollers are mounted at one ends, far away from the axis, of the guide ring frame (52) and the inner portions of the upper tensioning plate and the lower tensioning plate (51), steel cables are wound on the auxiliary rollers, and the right ends of the steel cables are hinged to the left end face of the guide sliding ring (54).
3. The slope prestressed anchorage device of the steel-free wale for foundation pit support according to claim 1, wherein: the anchoring section (3) comprises a fixed shell (31), a telescopic cylinder (32) and a telescopic rod (33), the left half shell and the right half shell of the fixed shell (31) are in a circular truncated cone shape, the telescopic cylinder (32) is installed in the right half shell in a staggered mode, the telescopic cylinder (32) is provided with the telescopic rod (33), the lower end of the telescopic rod (33) is fixed on the inner wall of the left half shell, and a fixed component (8) is fixed at the output end of the telescopic rod (33);
the telescopic cylinders (32) positioned on the right half shell side arc surface are arranged in 6 groups in a circumferential manner, and the telescopic cylinders (32) positioned at the center of the telescopic cylinders and the anchor cable (2) are coaxial;
the left side of the fixed shell (31) is also provided with a pressure early warning device (7), and the outer side surface of the pressure early warning device (7) is provided with a pressure measuring device (6).
4. The slope prestressed anchorage device of the steel-free wale for foundation pit support according to claim 2, wherein: the fixed assembly (8) comprises a drill bit (81), a grinding ring (82) and a material transmission box (83), the upper end and the lower end of the material transmission box (83) are rotatably connected with the lower end face of a hollow disc (89) fixed on the bottom end face of the grinding ring (82), the outer side face of a guide sliding ring (54) is fixedly connected, the upper end face ring of the grinding ring (82) is fixedly connected with the bottom end face ring of the drill bit (81), and a material storage cavity, a material transmission cavity and a crushing filter cavity are sequentially arranged in the material transmission box (83) from bottom to top;
a guide shaft (84) is arranged at the axis of a cavity in the material conveying box (83), an auxiliary shell (85) is installed on the outer side of the guide shaft (84), a transverse fixing disc is installed at the lower end of the material conveying cavity, a motor II (814) is installed in the transverse fixing disc, a rotating shaft (813) is fixed at the output end of the motor II (814), a main bevel gear is fixed at the right end of the rotating shaft (813), the main bevel gear is meshed with a secondary bevel gear fixed at the bottom end of a material conveying rotary blade column (812), and the inner annular wall and the outer annular wall of an annular disc surface rotatably connected with the upper end of the material conveying rotary blade column (812) are rotatably connected with the outer side wall of the rotating shell (811) and the inner side wall of the material conveying;
rotatory shell (811) bottom inside wall is fixed with spacing rotatory shell (86) lateral wall mutually, spacing rotatory shell (86) inside wall rotates with auxiliary housing (85) lateral wall to be connected, and the slip operation from top to bottom is located the spur gear strip of the inboard wall mounting in the sunken chamber of spacing rotatory shell (86) is connected with the spur gear meshing that fixes motor (87) output end on deflector (810).
5. The slope prestressed anchorage device of the steel-free wale for foundation pit support according to claim 4, wherein: rotatory shell (811) bottom end face ring is opened the annular spout that sets up with horizontal fixed disk up end and is rotated and be connected, wherein, is located arc fan hole has been seted up to rotatory shell (811) of slope in smashing the filter chamber, arc fan hole internally mounted has filter screen (88), just rotatory shell (811) up end and hollow disc (89) inboard bottom end face fixed connection.
6. The pre-stressed anchoring device for side slope of non-steel wale for foundation pit support according to claim 5, wherein: and a crushing device (11) is arranged in the inner side cavity corresponding to the first filter screen (88).
7. The slope prestressed anchorage device of the steel-free wale for foundation pit support according to claim 4, wherein: the grinding ring (82) is internally provided with a filter box (815) fixed on the outer side wall of the auxiliary shell (85), the left side of the upper end and the right side of the lower end of the filter box (815) are both provided with a material channel, the left side of the upper end is provided with a filter screen II (818) at the lower end of the material channel, the right end of the filter screen (818) is fixedly connected with the left end of a vibration sleeve (817), and the vibration sleeve (817) is sleeved on the outer side of a vibration rod driven by the oscillator (816).
8. The slope prestressed anchorage device of the steel-free wale for foundation pit support according to claim 4, wherein: the outer side of the guide shaft (84) is provided with a strip-shaped sliding groove which is matched with the guide plate (810) to slide, and the guide shaft (84) and the auxiliary shell (85) are of telescopic structures.
9. The slope prestressed anchorage device of the steel-free wale for foundation pit support according to claim 4, wherein: drill bit (81) include outer conical shell (819), interior conical shell (820) and support column (821), outer conical shell (819) lower extreme is fixed with fan-shaped arc board (822), is the circumference and arranges and set up the multiunit, and adjacent leave the feed port with fan-shaped arc board (822) equidimension between fan-shaped arc board (822), and adjacent it is fixed mutually through support plate (823) between fan-shaped arc board (822) the left and right lateral wall, it is fixed mutually through support column (821) between fan-shaped arc board (822) and interior conical shell (820).
10. The slope prestressed anchorage device of the steel-free wale for foundation pit support according to claim 3, wherein: the pressure measuring device (6) comprises an elastic telescopic disc (61), a compression support (63) and a sensing surface (64), a limiting block (62) is arranged on the outer side of the elastic telescopic disc (61), the center face of the bottom end of the compression support (63) is fixed to the upper end of the elastic telescopic disc (61), the left end and the right end of the compression support (63) are hinged to a rotating wheel (65), and the sensing surface (64) is fixed to the upper surface of the compression support (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110071998.4A CN112900448A (en) | 2021-01-19 | 2021-01-19 | Foundation ditch support is with slope prestressed anchorage device of no steel waist rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110071998.4A CN112900448A (en) | 2021-01-19 | 2021-01-19 | Foundation ditch support is with slope prestressed anchorage device of no steel waist rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112900448A true CN112900448A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110071998.4A Withdrawn CN112900448A (en) | 2021-01-19 | 2021-01-19 | Foundation ditch support is with slope prestressed anchorage device of no steel waist rail |
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| Country | Link |
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| CN (1) | CN112900448A (en) |
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| CN113756326A (en) * | 2021-09-12 | 2021-12-07 | 深圳市勘察测绘院(集团)有限公司 | Deep weak soil foundation ditch pit bottom utility tunnel environmental protection formula underground structure supporting device |
| CN114032721A (en) * | 2021-11-29 | 2022-02-11 | 杭州光华路桥工程有限公司 | Asphalt pavement composite structure and construction method thereof |
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