CN114277760A - Mucky soil layer stirring pile reinforcing structure and construction method - Google Patents
Mucky soil layer stirring pile reinforcing structure and construction method Download PDFInfo
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- CN114277760A CN114277760A CN202111605387.XA CN202111605387A CN114277760A CN 114277760 A CN114277760 A CN 114277760A CN 202111605387 A CN202111605387 A CN 202111605387A CN 114277760 A CN114277760 A CN 114277760A
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Abstract
The application relates to a mucky soil layer stirring pile reinforcing structure and a construction method, which are applied to the technical field of stirring piles, and comprise a stirring pile body for reinforcing a mucky soil layer, wherein reinforcing ribs are arranged in the stirring pile body for reinforcing the mucky soil layer along the depth direction, and reinforcing mechanisms for improving the connection strength between the stirring pile body and the mucky soil layer on the peripheral side of the stirring pile body are arranged on the reinforcing ribs; the reinforcing mechanism comprises a connecting core and a plurality of outer expansion ribs, the connecting core is sleeved on the reinforcing ribs, the outer expansion ribs are hinged on the periphery of the connecting core at intervals, and the reinforcing ribs are provided with outer supporting mechanisms which are used for supporting the outer expansion ribs into the muddy soil layer on the periphery of the stirring pile body. This application has and makes the stirring stake inseparabler with being connected on silt matter soil horizon on every side, and then has improved the joint strength's of stirring stake and silt matter soil horizon on every side effect.
Description
Technical Field
The application relates to the technical field of mixing piles, in particular to a mucky soil layer mixing pile reinforcing structure and a construction method.
Background
The mixing pile is used to reinforce saturated soft clay foundation, and cement is used as curing agent to forcibly mix soft soil and curing agent in deep foundation via special mixing machine.
In the related technology, when a mucky soil layer is constructed, a constructor firstly positions, centers and levels a stirring pile machine; then starting the mixing pile machine, drilling the muddy soil layer by the mixing head, and simultaneously controlling the drill rod to drive the mixing head to sink; and at the in-process of drilling, send grout to stirring head grout outlet through the mortar pump for the stirring head is pour when the stirring, treats that the stirring head sinks to the design degree of depth after, and control stirring head stirring promotes, and repeated stirring sinks and promotes several times, so that thick liquid and mucky soil horizon intensive mixing, thereby alright make the stirring stake relatively more firm after the shaping.
In view of the above-mentioned related technologies, the inventors consider that the cement paste only ensures the structural strength of the mixing pile itself, but the connection between the mixing pile and the surrounding mucky soil layer is not tight enough, which makes the connection strength between the mixing pile and the surrounding mucky soil layer after the mixing pile is formed not high.
Disclosure of Invention
In order to solve the problem that the connection strength between the formed stirring pile and the surrounding mucky soil layer is not high, the application provides a mucky soil layer stirring pile reinforcing structure and a construction method.
First aspect, this application provides a mucky soil layer stirring stake reinforced structure, adopts following technical scheme:
a mucky soil layer stirring pile reinforcing structure comprises a stirring pile body for reinforcing a mucky soil layer, wherein reinforcing ribs are arranged in the stirring pile body for reinforcing the mucky soil layer along the depth direction, and reinforcing mechanisms for improving the connection strength between the stirring pile body and the mucky soil layer on the peripheral side of the stirring pile body are arranged on the reinforcing ribs; the reinforcing mechanism comprises a connecting core and a plurality of outer expansion ribs, the connecting core is sleeved on the reinforcing ribs, the outer expansion ribs are hinged on the periphery of the connecting core at intervals, and the reinforcing ribs are provided with outer supporting mechanisms which are used for supporting the outer expansion ribs into the muddy soil layer on the periphery of the stirring pile body.
By adopting the technical scheme, the structure that the external expansion ribs are hinged with the connecting core ensures that one end of each external expansion rib, which is far away from the connecting core, can be folded towards the upward inclined direction in the process of inserting the reinforcing ribs into the mixing pile body, so that the resistance of the reinforcing ribs when being inserted into the mixing pile body is reduced; after the reinforcing ribs are inserted to the preset positions, the outer expanding ribs are propped against the muddy soil layer inserted into the peripheral side of the stirring pile body through the outer support mechanism, so that the outer expanding ribs are partially positioned in the stirring pile body and partially positioned in the muddy soil layer around the stirring pile body; therefore, after the stirring pile is formed, the stirring pile can be tightly connected with the surrounding mucky soil layer, and the connection strength of the formed stirring pile and the surrounding mucky soil layer is improved.
Optionally, prop the mechanism outward and constitute by sleeve and butt ring, the sleeve slip cover is established consolidate on the muscle and be located the top of connecting the core, the butt ring is connected telescopic bottom, it is a plurality of expand the muscle outward and distribute in week side of butt ring.
Through adopting above-mentioned technical scheme, after reinforcing muscle and sleeve inserted to predetermined position, through the reinforcement muscle that moves up for expand the muscle outward and the butt ring looks butt of sleeve bottom, thereby the butt ring alright expand the muscle outward and strut to inserting the muddy soil in the week side of mixing pile body in.
Optionally, the reinforcing rib is provided with a blocking ring below the connecting core in a sleeved mode, the blocking ring is attached to the connecting core, and the outer diameter of the blocking ring is larger than that of the connecting core.
By adopting the technical scheme, in the process of moving the reinforcing ribs upwards, the outer expanding ribs can be gradually propped to be in a horizontal state by the abutting rings, and at the moment, the outer expanding ribs are inserted into the muddy soil layer on the peripheral side of the stirring pile body to be deepest, so that the connection effect is also best; through the effect that blocks of barrier ring, can carry on spacingly to the outer muscle that expands of horizontality to reduce the reinforcement muscle excessively to move up, lead to expanding the muscle outward and keep away from the one end downward sloping of connecting the core, and then influence the possibility of the connection effect of expanding the muscle outward.
Optionally, one end of each outer expanded rib, which is far away from the connecting core, is provided with a conical tip, and a connecting assembly is arranged between every two adjacent outer expanded ribs; the connecting assembly comprises two connecting ribs which are hinged with each other, wherein one connecting rib is hinged on one outer expanding rib, and the other connecting rib is hinged on the other outer expanding rib; when the plurality of outer expansion ribs are folded towards the direction of the reinforcing rib, the two connecting ribs are also in a folded state; when the outer expansion ribs are expanded towards the direction far away from the reinforcing ribs and are propped into the mucky soil layer on the peripheral side of the stirring pile body, the two connecting ribs are also in an expanded state.
By adopting the technical scheme, the conical tip can enable the outer expansion ribs to be more easily inserted into the muddy soil layer on the peripheral side of the stirring pile body; and the connecting ribs are also driven to be inserted together in the process of inserting the outer expanded ribs into the mucky soil layer, and the connecting ribs connect all the outer expanded ribs inserted into the mucky soil layer into a whole, so that the connecting strength between the formed mixing pile and the mucky soil layer is further improved.
Optionally, a positioning core is sleeved on the sleeve, a plurality of positioning ribs are hinged around the positioning core, positioning pieces are hinged to one ends of the positioning ribs far away from the positioning core, and a first positioning cylinder is slidably sleeved on each of the plurality of positioning ribs; a second positioning barrel is slidably sleeved on the sleeve above the positioning core, positioning rods are connected between the second positioning barrel and each first positioning barrel, one end of each positioning rod is hinged to the corresponding first positioning barrel, and the other end of each positioning rod is hinged to the corresponding second positioning barrel; and the sleeve is further in threaded connection with a third positioning cylinder, and the outer peripheral wall of the third positioning cylinder is in threaded connection with the inner peripheral wall of the second positioning cylinder.
By adopting the technical scheme, the second positioning cylinder can be slid to drive the positioning rod to pull the first positioning cylinder so as to adjust the inclination of the positioning rib, so that the plurality of positioning pieces are simultaneously attached to the inner wall of the stirring pile body, and then the third positioning cylinder is rotated until the third positioning cylinder is in threaded connection with the second positioning cylinder, so that the second positioning cylinder is fixed; thus, the perpendicularity of the reinforcing rib and the sleeve can be improved.
Optionally, the upper end of the sleeve is detachably connected with a first limiting block, the first limiting block is lapped on the ground on the periphery of the stirring pile body for reinforcing the mucky soil layer, and a demolding layer is arranged on the bottom wall of the first limiting block; the upper end of reinforcing rib can be dismantled and be connected with the second stopper, the size of second stopper is greater than telescopic pipe diameter, the second stopper is located the top of first stopper.
By adopting the technical scheme, the first limiting block and the second limiting block are matched with each other, so that the possibility that the reinforcing ribs and the sleeves sink into the mixing pile body is reduced, and convenience is brought to a constructor to adjust the external expansion ribs; the first limiting block and the second limiting block are detachably connected, so that after the stirring pile is formed, constructors can respectively disassemble the first limiting block and the second limiting block for repeated use, and the utilization rate of materials is improved; and meanwhile, the possibility that the first limiting block is adhered to the formed stirring pile is reduced by the demolding layer, and the first limiting block is convenient to remove.
Optionally, two opposite sides of the second limiting block in the horizontal direction are provided with supporting blocks, the two supporting blocks are located on the upper portion of the second limiting block, the first limiting block is provided with two placing grooves, one of the placing grooves is located on one side, facing one supporting block, of the second limiting block, the other placing groove is located on one side, facing the other supporting block, of the second limiting block, a supporting rod is arranged in the placing groove, one end of the supporting rod is hinged to a groove wall of the placing groove, and the other end of the supporting rod abuts against the supporting block.
By adopting the technical scheme, the two supporting blocks are respectively arranged at two opposite sides of the second limiting block, so that a constructor can conveniently and stably lift the second limiting block by using tools such as a jack and the like under the two supporting blocks simultaneously so as to drive the outer expansion ribs to be stably inserted into the muddy soil layer on the peripheral side of the stirring pile body; and after the second limiting block is lifted to the preset position, the supporting rod can be rotated to abut against the bottom of the supporting block through the supporting rod, so that the supporting block is limited, and the possibility that reinforcing ribs sink in the solidification process of the stirring pile body, and further the formed stirring pile and the mucky soil layer are influenced due to the fact that the outer expansion ribs deviate is reduced.
Optionally, the two supporting blocks are respectively provided with a positioning component for positioning the supporting rod; the positioning assembly comprises a positioning block and a positioning spring, the bottom wall of the supporting block is provided with a positioning groove, the positioning block slides in the positioning groove, the positioning spring is located in the positioning groove, one end of the positioning spring is connected to the groove wall of the positioning groove, the other end of the positioning spring is connected to the positioning block, the positioning spring pushes the part of the positioning block out of the positioning groove, and the side, back to the second limiting block, of the part, extending out of the positioning groove, of the positioning block is an inclined surface.
By adopting the technical scheme, in the process that a constructor rotates the supporting rod to abut against the bottom of the supporting block, the supporting rod can abut the positioning block into the positioning groove; when the supporting rod is abutted to the bottom of the supporting block, the positioning block is pushed out of the positioning groove by the positioning spring and attached to the side wall of the supporting rod, so that the supporting rod can be limited, and the supporting stability of the supporting rod is improved.
Optionally, a plurality of reinforcing screws are arranged on the first limiting block, the reinforcing screws penetrate through the first limiting block and extend into the mucky soil layer, and filling holes are further formed in the first limiting block.
By adopting the technical scheme, the reinforcing screw enables the first limiting block to be stably connected with the ground on the peripheral side of the stirring pile body, so that the fixing stability of the sleeve is improved; therefore, when constructors lift the reinforcing ribs, the abutting ring at the bottom of the sleeve can stably abut the outer expanded ribs to the muddy soil layer inserted into the peripheral side of the stirring pile body; and the in-process that the outer expanding rib inserts the mucky soil layer of stirring stake body week side can lead to stirring stake body top layer to take place to subside, through pouring grout in the hole pouring and alright timely supplementing the top layer of stirring stake body, the shaping that makes the stirring stake body can be stable.
In a second aspect, the application further provides a construction method of the mucky soil layer stirring pile reinforcing structure, which adopts the following technical scheme:
a construction method of a mucky soil layer stirring pile reinforcing structure comprises the following steps:
s1: a constructor positions, centers and levels the mixing pile machine; then starting the mixing pile machine, drilling the muddy soil layer by the mixing head, and simultaneously controlling the drill rod to drive the mixing head to sink; in the drilling process, cement slurry is conveyed to a slurry outlet of the stirring head through a mortar pump, so that the stirring head can pour while stirring;
s2: after the mixing pile machine fully mixes the cement paste and the mucky soil layer and before the cement paste is not solidified, inserting the reinforcing ribs and the sleeve into the mixing pile body together until the first limiting block is lapped on the ground on the peripheral side of the mixing pile body, and the second limiting block is lapped on the first limiting block; in the process, the inclination of the positioning ribs is adjusted by adjusting the position of the second positioning cylinder, so that the positioning pieces are simultaneously attached to the inner wall of the stirring pile body, and the second positioning cylinder is fixed by the third positioning cylinder, so that the perpendicularity of the reinforcing ribs and the sleeve is improved;
s3: fixing the first limiting block through a reinforcing screw, and then pushing the supporting block upwards by using tools such as a jack and the like so that the supporting block drives the second limiting block to move upwards and further drives the reinforcing ribs to move upwards, so that the plurality of externally-expanded ribs on the connecting core are abutted against the abutting ring, and the abutting ring abuts the externally-expanded ribs to a soil layer inserted into the peripheral side of the stirring pile body;
s4: the support rod is rotated to abut against the support block, cement slurry is supplemented into the stirring pile body through the filling hole, after the cement slurry mixed with the mucky soil layer is solidified and molded, the second limit block and the first limit block are respectively disassembled, reinforcing ribs above the stirring pile body are cut off, and then the stirring pile can be formed.
Through adopting above-mentioned technical scheme, reinforcing rib and sleeve insert the stirring stake body to predetermineeing the position after, fix first stopper through the reinforcement screw, then make the second stopper drive the reinforcing rib and shift up together through promoting the second stopper to the butt joint ring just can support outer expanding rib to inserting in the muddy soil layer of stirring stake body week side in situ, thereby alright improve the stirring stake body and the tight degree of being connected on muddy soil layer, improved the joint strength on stirring stake shaping back and muddy soil layer on every side from this.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the constructor rotates all the external expansion ribs upwards to enable one ends of the external expansion ribs, which are far away from the connecting core, to be folded upwards in an inclined mode, so that the resistance of the reinforcing ribs when the reinforcing ribs are inserted into the mixing pile body is reduced; after the reinforcing ribs are inserted to the preset positions, the outer expanding ribs can be abutted to the muddy soil layer inserted into the peripheral side of the stirring pile body through the outer support mechanism; therefore, after the stirring pile is formed, the stirring pile can be tightly connected with the surrounding mucky soil layer, so that the connection strength of the formed stirring pile and the surrounding mucky soil layer is improved;
2. the external expansion ribs also drive the connecting ribs to be inserted together in the process of inserting the external expansion ribs into the mucky soil layer, and the connecting ribs connect all the external expansion ribs inserted into the mucky soil layer into a whole, so that the connecting strength between the formed stirring pile and the mucky soil layer is further improved;
3. the second positioning cylinder can be slid to drive the positioning rod to pull the first positioning cylinder so as to adjust the inclination of the positioning ribs, so that the positioning pieces are attached to the inner wall of the stirring pile body at the same time, and then the third positioning cylinder is rotated until the third positioning cylinder is in threaded connection with the second positioning cylinder, so that the second positioning cylinder is fixed; thus, the perpendicularity of the reinforcing rib and the sleeve can be improved.
Drawings
Fig. 1 is a sectional view of a reinforcing structure inserted into a mixing pile according to an embodiment of the present application.
Fig. 2 is a sectional view showing a state in which the reinforcing structure is reinforced in the embodiment of the present application.
FIG. 3 is a cross-sectional view of a positioning assembly in an embodiment of the present application.
Reference numerals: 1. stirring the pile body; 2. reinforcing ribs; 3. a reinforcement mechanism; 31. a connecting core; 32. expanding the ribs outwards; 4. an outer support mechanism; 41. a sleeve; 42. a butting ring; 5. a blocking ring; 6. a conical tip; 7. a connecting assembly; 71. connecting ribs; 8. a positioning core; 9. positioning ribs; 10. positioning plates; 11. a first positioning cylinder; 12. a second positioning cylinder; 13. positioning a rod; 14. a third positioning cylinder; 15. a first stopper; 16. a release layer; 17. a second limiting block; 18. a support block; 19. a placement groove; 20. a support bar; 21. a positioning assembly; 211. positioning blocks; 212. a positioning spring; 22. positioning a groove; 23. a bevel; 24. reinforcing the screw; 25. and (6) pouring a hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses mucky soil layer stirring pile reinforced structure.
Referring to fig. 1 and 2, the mucky soil layer mixing pile reinforcing structure comprises a mixing pile body 1 and reinforcing ribs 2, wherein the mixing pile body 1 is a cylindrical pile body, reinforcing mechanisms 3 for improving the connection strength between the mixing pile body 1 and the mucky soil layer are arranged on the reinforcing ribs 2, each reinforcing mechanism 3 is composed of a connecting core 31 and a plurality of outer expansion ribs 32 uniformly hinged on the periphery of the connecting core 31, the connecting core 31 is coaxially sleeved on the lower part of each reinforcing rib 2 and welded with the reinforcing ribs 2, the lengths of the outer expansion ribs 32 are equal, and the lengths of the outer expansion ribs 32 are greater than the radius of the mixing pile body 1; when the reinforcing ribs 2 are inserted into the mixing pile body 1, one ends of all the external expansion ribs 32 far away from the connecting core 31 are folded towards the direction obliquely upwards, so that the resistance of the reinforcing ribs 2 when being inserted into the mixing pile body 1 can be reduced.
An outer support mechanism 4 is further arranged above the connecting core 31 on the reinforcing ribs 2, and under the action of the outer support mechanism 4, after the reinforcing ribs 2 are inserted into the stirring pile body 1 to a preset position, downward abutting force is applied to all the outer expansion ribs 32, so that all the outer expansion ribs 32 are expanded to the mucky soil layer inserted into the peripheral side of the stirring pile body 1, and after the stirring pile body 1 is solidified and molded, the outer expansion ribs 32 are partially fixed in the stirring pile body 1 and partially fixed in the mucky soil layer around the stirring pile body 1; so that the mixing pile is tightly connected with the surrounding mucky soil layer, thereby improving the connection strength of the mixing pile and the surrounding mucky soil layer.
Referring to fig. 1 and 2, the external bracing mechanism 4 includes a sleeve 41 slidably sleeved on the reinforcing rib 2 and an abutting ring 42 integrally formed at the bottom of the sleeve 41, the abutting ring 42 is a circular ring, when the reinforcing rib 2 and the sleeve 41 are inserted into the mixing pile body 1 to a preset position, the reinforcing rib 2 is moved upwards to abut the external expansion rib 32 on the abutting ring 42, so that the abutting ring 42 can externally brace the external expansion rib 32 to a mucky soil layer inserted into the peripheral side of the mixing pile body 1; and one end of the outer expansion rib 32 far away from the connecting core 31 is integrally formed with a conical tip 6, so that the resistance of the outer expansion rib 32 inserted into the mucky soil layer is reduced;
meanwhile, a connecting assembly 7 is arranged between two adjacent outer expansion ribs 32, the connecting assembly 7 is composed of two connecting ribs 71 which are hinged with each other, one connecting rib 71 is hinged to one end of one outer expansion rib 32 close to the self cone tip 6, and the other connecting rib 71 is hinged to one end of the other outer expansion rib 32 close to the self cone tip 6; the outer expanded ribs 32 drive the connecting ribs 71 to be inserted together in the process of being inserted into the mucky soil layer, and all parts, located in the mucky soil layer, of the outer expanded ribs 32 are connected into a whole through the connecting ribs 71, so that the connecting strength between the formed stirring pile and the mucky soil layer is further improved.
Referring to fig. 2, in addition, still coaxial cover is equipped with stop ring 5 on the reinforcement muscle 2, stop ring 5 and reinforcement muscle 2 welding, stop ring 5 is the diameter that the diameter is greater than connecting core 31 for the ring sum diameter, stop ring 5 laminates in the bottom of connecting core 31, because stop ring 5's blocking effect, can block to the outer muscle 32 that expands of horizontality, this has reduced reinforcement muscle 2 excessively moves up and has leaded to outer muscle 32 to keep away from the possibility of the one end downward sloping of connecting core 31, just can guarantee the deepest mucky soil layer of inserting the circumferential side of mixing pile body 1 of outer muscle 32 from this, thereby the joint strength between mixing pile and the mucky soil layer has been improved.
Referring to fig. 1 and 2, coaxial cover is equipped with location core 8 on sleeve 41, location core 8 welds the middle part at sleeve 41, location core 8 encircles that week side evenly articulates there is the same location muscle 9 of a plurality of length, the length of location muscle 9 is greater than the radius of stirring stake body 1, it is equipped with first location section of thick bamboo 11 all to slide the cover on each location muscle 9, the top slip cover that lies in location core 8 on sleeve 41 is equipped with second location section of thick bamboo 12, all be connected with the same locating lever 13 of length between second location section of thick bamboo 12 and each first location section of thick bamboo 11, it is articulated between locating lever 13 and first location section of thick bamboo 11 and the second location section of thick bamboo 12, one side that sleeve 41 was kept away from to each location muscle 9 all articulates there is locating piece 10, it has third location section of thick bamboo 14 still to screw thread connection on sleeve 41, and also be threaded connection between the outer wall of third location section of thick bamboo 14 and the inner wall of second location section of thick bamboo 12.
In the process that the sleeve 41 is inserted into the mixing pile body 1, a constructor can slide the second positioning cylinder 12 upwards to drive the positioning rod 13 to pull the first positioning cylinder 11 so as to synchronously adjust the gradient of all the positioning ribs 9, and simultaneously adjust the position of the sleeve 41 so that all the positioning pieces 10 are positioned at the same horizontal height and are attached to the inner wall of the mixing pile body 1, and at the moment, the third positioning cylinder 14 is rotated until the third positioning cylinder 14 is in threaded connection with the second positioning cylinder 12 so as to fix the second positioning cylinder 12; therefore, the reinforcing ribs 2 and the sleeves 41 can be inserted into the mixing pile body 1 in a state of keeping coaxial with the mixing pile body 1, and the subsequent external expansion ribs 32 can be well inserted into the mucky soil layer to be paved.
Referring to fig. 1 and 2, a first limiting block 15 is in threaded connection with the top of the sleeve 41, the first limiting block 15 is a circular block, the radius of the first limiting block 15 is larger than that of the mixing pile body 1, a second limiting block 17 is in threaded connection with the top of the reinforcing rib 2, and the second limiting block 17 is also a circular block; constructor inserts reinforcing rib 2 and sleeve 41 and stirs stake body 1 to first stopper 15 overlap joint on the ground of stirring stake body 1 week side, and second stopper 17 overlap joint is on first stopper 15, alright realize reinforcing rib 2 and sleeve 41's location.
Referring to fig. 1 and 2, two opposite sides of the second limiting block 17 in the horizontal direction are integrally formed with supporting blocks 18, the two supporting blocks 18 are rectangular blocks, and the two supporting blocks 18 are both located at the upper part of the second limiting block 17; the construction personnel can conveniently and stably lift the second limiting block 17 by using tools such as jacks and the like under the two supporting blocks 18 at the same time so as to drive the reinforcing ribs 2 to move upwards, and further the abutting ring 42 can support the outer expansion ribs 32 to the muddy soil layer inserted into the peripheral side of the mixing pile body 1; and when sleeve 41 inserted stirring stake body 1 to preset the position, first stopper 15 was fixed on stirring stake body 1 week side subaerial through a plurality of reinforcement screw 24, and this has improved sleeve 41 and butt ring 42's fixed stability for butt ring 42 can be stable carry out the butt to outer expanding rib 32.
Referring to fig. 3, all have standing groove 19 under being located two supporting shoes 18 on the first stopper 15 respectively, it has bracing piece 20 to articulate in the standing groove 19, and bracing piece 20 articulates the one end that is close to second stopper 17 at standing groove 19, when constructor uses tools such as jack to promote second stopper 17 to preset the position, alright through rotating bracing piece 20 to the bottom of bracing piece 20 butt at supporting shoe 18, in order to carry on spacingly to supporting shoe 18, thereby reduced reinforcing bar 2 because gravity and moved down and lead to outer expanding muscle 32 to take place the possibility of skew.
In addition, the bottoms of the two supporting blocks 18 are respectively provided with a positioning assembly 21, each positioning assembly 21 is composed of a positioning block 211 and a positioning spring 212, a positioning groove 22 is arranged on the bottom wall of each supporting block 18 and is positioned right above the corresponding placing groove 19, the positioning blocks 211 are arranged in the positioning grooves 22 in a sliding mode along the vertical direction, one end of each positioning spring 212 is fixed to the groove wall of each positioning groove 22, and the other end of each positioning spring 212 is fixed to the corresponding positioning block 211; in an initial state, part of the positioning block 211 extends out of the positioning slot 22, and a slope 23 is formed on one side of the part of the positioning block 211, which is positioned outside the positioning slot 22 and faces away from the second limiting block 17; therefore, in the process that the supporting rod 20 rotates to abut against the supporting block 18, the positioning block 211 can abut against the positioning groove 22; when the supporting rod 20 is rotated to vertically abut against the supporting block 18, the positioning block 211 is pushed out of the positioning slot 22 by the positioning spring 212 and is attached to one side of the supporting rod 20 away from the second limiting block 17, so that the positioning block 211 can limit the supporting rod 20 to ensure that the supporting rod 20 stably supports the supporting block 18.
Referring to fig. 2, the first limiting block 15 is further provided with a pouring hole 25, and after the supporting block 18 is supported by a constructor through the supporting rod 20, the surface layer settled in the mixing pile body 1 can be timely supplemented by pouring cement paste into the pouring hole 25, so that the mixing pile body 1 can be well molded; and be equipped with demoulding layer 16 on the diapire of first stopper 15, in this embodiment, demoulding layer 16 is the polytetrafluoroethylene board, and polytetrafluoroethylene board fixed connection is on the diapire of first stopper 15, and the polytetrafluoroethylene board has the low and difficult other material's of adhesion characteristic of coefficient of friction, consequently, sets up demoulding layer 16 and has made things convenient for constructor to demolish first stopper 15 after the stirring stake shaping.
The embodiment of the application also discloses a construction method of the mucky soil layer mixing pile reinforcing structure, which comprises the following steps:
s1: a constructor positions, centers and levels the mixing pile machine; then starting the mixing pile machine, drilling the muddy soil layer by the mixing head, and simultaneously controlling the drill rod to drive the mixing head to sink; in the drilling process, cement slurry is delivered to a slurry outlet of the stirring head through a mortar pump, so that the stirring head can pour while stirring, and a cylindrical stirring pile body 1 is formed;
s2: after the mixing pile machine fully mixes the cement paste and the mucky soil layer and before the cement paste is not solidified, the reinforcing ribs 2 and the sleeves 41 are inserted into the mixing pile body 1 together until the first limiting block 15 is lapped on the ground on the peripheral side of the mixing pile body 1, and the second limiting block 17 is lapped on the first limiting block 15; in the process, the inclination of all the positioning ribs 9 is synchronously adjusted by sliding the second positioning cylinder 12, and the position of the sleeve 41 is adjusted at the same time, so that all the positioning pieces 10 are at the same horizontal height and are attached to the inner wall of the mixing pile body 1, and then the third positioning cylinder 14 is rotated until the third positioning cylinder 14 is in threaded connection with the second positioning cylinder 12, so that the second positioning cylinder 12 is fixed; therefore, the reinforcing ribs 2 and the sleeves 41 can be inserted into the mixing pile body 1 in a state of keeping the same axis with the mixing pile body 1;
s3: the first limiting block 15 is fixed through the reinforcing screw 24, and the second limiting block 17 is stably lifted by using tools such as a jack and the like under the two supporting blocks 18, so that the two supporting blocks 18 drive the second limiting block 17 to move upwards, the reinforcing ribs 2 are driven to move upwards, the plurality of outer expansion ribs 32 on the connecting core 31 are abutted against the abutting ring 42, and the abutting ring 42 externally supports the outer expansion ribs 32 to a mucky soil layer inserted into the peripheral side of the mixing pile body 1;
s4: the supporting rod 20 is rotated to be perpendicular to the supporting block 18 and abutted against the supporting block 18, cement slurry is supplemented into the stirring pile body 1 through the pouring hole 25, after the cement slurry mixed with the mucky soil layer in the stirring pile body 1 is solidified and molded, the positioning block 211 is abutted into the positioning groove 22, the supporting rod 20 is rotated into the placing groove 19, and then the second limiting block 17 can be rotated to detach the second limiting block 17; the reinforcing screw 24 is pulled out, so that the first limiting block 15 can be rotated to detach the first limiting block 15; finally, the reinforcing ribs 2 above the stirring pile body 1 are cut off, and the stirring pile can be formed.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a mucky soil layer stirring stake reinforced structure, is including stirring stake body (1) that is used for consolidating mucky soil layer, its characterized in that: reinforcing ribs (2) are arranged in the stirring pile body (1) for reinforcing the mucky soil layer along the depth direction, and reinforcing mechanisms (3) for improving the connection strength between the stirring pile body (1) and the mucky soil layer on the peripheral side of the stirring pile body (1) are arranged on the reinforcing ribs (2);
reinforcing mechanism (3) expand muscle (32) including connecting core (31) and a plurality of outward, connecting core (31) cover is established on reinforcing muscle (2), it is a plurality of expand muscle (32) interval hinge outward connect the week side of connecting core (31), be equipped with on reinforcing muscle (2) and be used for with a plurality of expand muscle (32) support outward the intraformational outer mechanism (4) that props of muddy soil of stirring stake body (1) week side outward.
2. The mucky soil layer stirring pile reinforcing structure as recited in claim 1, wherein: prop mechanism (4) outward and constitute by sleeve (41) and butt ring (42), sleeve (41) slip cover is established reinforcement muscle (2) are gone up and are located the top of connecting core (31), butt ring (42) are connected the bottom of sleeve (41), it is a plurality of outer muscle (32) of expanding distributes the week side of butt ring (42).
3. The mucky soil layer stirring pile reinforcing structure as recited in claim 1, wherein: the reinforcing rib (2) is positioned below the connecting core (31) and sleeved with a blocking ring (5), the blocking ring (5) is attached to the connecting core (31), and the outer diameter of the blocking ring (5) is larger than that of the connecting core (31).
4. The mucky soil layer stirring pile reinforcing structure as recited in claim 1, wherein: one end, far away from the connecting core (31), of each outer expansion rib (32) is provided with a conical tip (6), and a connecting assembly (7) is arranged between every two adjacent outer expansion ribs (32);
the connecting assembly (7) comprises two connecting ribs (71) which are hinged with each other, wherein one connecting rib (71) is hinged on one outer expanding rib (32), and the other connecting rib (71) is hinged on the other outer expanding rib (32);
when the plurality of outer expansion ribs (32) are folded towards the reinforcing rib (2), the two connecting ribs (71) are also in a folded state; when the plurality of external expansion ribs (32) are expanded towards the direction far away from the reinforcing rib (2) and are propped into the sludge soil layer on the peripheral side of the stirring pile body (1), the two connecting ribs (71) are also in an expanded state.
5. The mucky soil layer stirring pile reinforcing structure as recited in claim 2, wherein: the sleeve (41) is sleeved with a positioning core (8), the positioning core (8) is hinged with a plurality of positioning ribs (9) around the periphery, one end, far away from the positioning core (8), of each positioning rib (9) is hinged with a positioning sheet (10), and a plurality of positioning ribs (9) are sleeved with first positioning cylinders (11) in a sliding mode; a second positioning barrel (12) is slidably sleeved on the sleeve (41) above the positioning core (8), a positioning rod (13) is connected between each second positioning barrel (12) and each first positioning barrel (11), one end of each positioning rod (13) is hinged to each first positioning barrel (11), and the other end of each positioning rod (13) is hinged to each second positioning barrel (12); the sleeve (41) is further in threaded connection with a third positioning cylinder (14), and the outer peripheral wall of the third positioning cylinder (14) is in threaded connection with the inner peripheral wall of the second positioning cylinder (12).
6. The mucky soil layer stirring pile reinforcing structure as recited in claim 2, wherein: the upper end of the sleeve (41) is detachably connected with a first limiting block (15), the first limiting block (15) is lapped on the ground on the peripheral side of the stirring pile body (1) for reinforcing the mucky soil layer, and a demolding layer (16) is arranged on the bottom wall of the first limiting block (15); the upper end of reinforcing rib (2) can be dismantled and be connected with second stopper (17), the size of second stopper (17) is greater than the pipe diameter of sleeve (41), second stopper (17) are located the top of first stopper (15).
7. The mucky soil layer stirring pile reinforcing structure as recited in claim 6, wherein: two opposite sides of the second limiting block (17) in the horizontal direction are provided with supporting blocks (18), the two supporting blocks (18) are located at the upper part of the second limiting block (17), the first limiting block (15) is provided with two placing grooves (19), one of the placing grooves (19) is located on one side, facing one supporting block (18), of the second limiting block (17), the other placing groove (19) is located on one side, facing the other supporting block (18), of the second limiting block (17), a supporting rod (20) is arranged in the placing groove (19), one end of the supporting rod (20) is hinged to the groove wall of the placing groove (19), and the other end of the supporting rod (20) abuts against the supporting block (18).
8. The mucky soil layer stirring pile reinforcing structure as recited in claim 7, wherein: the two supporting blocks (18) are respectively provided with a positioning component (21) for positioning the supporting rod (20);
the positioning assembly (21) comprises a positioning block (211) and a positioning spring (212), a positioning groove (22) is formed in the bottom wall of the supporting block (18), the positioning block (211) slides in the positioning groove (22), the positioning spring (212) is located in the positioning groove (22), one end of the positioning spring (212) is connected to the groove wall of the positioning groove (22), the other end of the positioning spring (212) is connected to the positioning block (211), the positioning spring (212) pushes the part of the positioning block (211) out of the positioning groove (22), and an inclined surface (23) is arranged on one side, back to the second limiting block (17), of the part, extending out of the positioning groove (22), of the positioning block (211).
9. The mucky soil layer stirring pile reinforcing structure as recited in claim 6, wherein: the first limiting block (15) is provided with a plurality of reinforcing screws (24), the reinforcing screws (24) penetrate through the first limiting block (15) and extend into the mucky soil layer, and the first limiting block (15) is further provided with filling holes (25).
10. The construction method of the muddy soil layer stirring pile reinforcement structure as set forth in any one of claims 1 to 9, wherein: the method comprises the following steps:
s1: a constructor positions, centers and levels the mixing pile machine; then starting the mixing pile machine, drilling the muddy soil layer by the mixing head, and simultaneously controlling the drill rod to drive the mixing head to sink; in the drilling process, cement slurry is conveyed to a slurry outlet of the stirring head through a mortar pump, so that the stirring head can pour while stirring;
s2: after the mixing pile machine fully mixes the cement paste and the mucky soil layer and before the cement paste is not solidified, the reinforcing ribs (2) and the sleeves (41) are inserted into the mixing pile body (1) together until the first limiting block (15) is lapped on the ground on the peripheral side of the mixing pile body (1), and the second limiting block (17) is lapped on the first limiting block (15); in the process, the inclination of the positioning ribs (9) is adjusted by adjusting the position of the second positioning cylinder (12), so that the positioning pieces (10) are simultaneously attached to the inner wall of the stirring pile body (1), and the second positioning cylinder (12) is fixed by the third positioning cylinder (14), so that the verticality of the reinforcing ribs (2) and the sleeve (41) is improved;
s3: the first limiting block (15) is fixed through a reinforcing screw (24), and then tools such as a jack and the like are used for upwards pushing the supporting block (18), so that the supporting block (18) drives the second limiting block (17) to upwards move, the reinforcing ribs (2) are driven to upwards move, a plurality of outward-expanded ribs (32) on the connecting core (31) are abutted to the abutting ring (42), and the outward-expanded ribs (32) are abutted to the soil layer inserted into the peripheral side of the mixing pile body (1) by the abutting ring (42);
s4: the support rod (20) is rotated to abut against the support block (18), cement slurry is supplemented into the stirring pile body (1) through the pouring hole (25), after the cement slurry mixed with the mucky soil layer is solidified and formed, the second limiting block (17) and the first limiting block (15) are respectively disassembled, and the reinforcing ribs (2) above the stirring pile body (1) are cut off, so that the stirring pile can be formed.
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