CN114086607A - Stock of anti buoyancy in increase soft soil - Google Patents

Stock of anti buoyancy in increase soft soil Download PDF

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CN114086607A
CN114086607A CN202111292183.5A CN202111292183A CN114086607A CN 114086607 A CN114086607 A CN 114086607A CN 202111292183 A CN202111292183 A CN 202111292183A CN 114086607 A CN114086607 A CN 114086607A
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rod
segmented
soft soil
guide
guide rod
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CN114086607B (en
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金炜枫
付周敏
解军吉
陶颖
曹宇春
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Zhejiang Lover Health Science and Technology Development Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
    • E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces

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  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses an anchor rod for increasing anti-buoyancy force in soft soil, which comprises an outer pipe, an inner pipe, a chassis, a guide rod, a segmented rod forming device and a driving device, wherein the outer pipe is connected with the inner pipe through the chassis; the inner pipe and the outer pipe are arranged concentrically, the inner pipe is rotatably arranged in the outer pipe, and the chassis is fixedly arranged in the inner pipe; the section rod forming device comprises a mould box arranged on the chassis, a pressure pump for conveying curing liquid to the mould box and a liquid storage box for storing the curing liquid, wherein the guide rod is matched with the mould box, the curing liquid conveyed into the mould box is solidified to form a section rod and is fixedly connected with the guide rod, and the width of the section rod is the same as that of the guide rod; the driving device comprises two gears and a gear driving mechanism, the two gears can be rotatably installed on the chassis, the gear driving mechanism is connected with the gear to drive the gear to rotate, the rotating gear drives the guide rod or the sectional rod to move to the outside of the outer pipe, and the guide rod and the sectional rod which are matched with each other to move on the outer pipe and the inner pipe are correspondingly provided with guide holes. The invention can enhance the anti-floating performance of the anti-floating anchor rod of the underground structure in the soft soil.

Description

Stock of anti buoyancy in increase soft soil
Technical Field
The invention belongs to the field of geotechnical engineering research, and particularly relates to an anchor rod for increasing anti-buoyancy force in soft soil.
Background
When the basement bears the underground water pressure, an anti-floating pile, an anti-floating anchor rod or pressure reduction drainage on the ground of the basement is needed, and the anti-floating anchor rod is used in soft soil, so that the problem that the bonding between an anchor rod grouting body and a soft soil interface is weak exists, and the anti-floating performance of the anchor rod in the soft soil needs to be enhanced.
Disclosure of Invention
The invention provides an anchor rod for increasing anti-buoyancy force in soft soil, aiming at enhancing the anti-floating performance of an anti-floating anchor rod of an underground structure in the soft soil.
The technical scheme of the invention is as follows: an anchor rod for increasing anti-buoyancy force in soft soil comprises an outer pipe, an inner pipe, a chassis, a guide rod, a segmented rod forming device and a driving device; the inner pipe and the outer pipe are arranged concentrically, the inner pipe is rotatably arranged in the outer pipe, and the chassis is fixedly arranged in the inner pipe; the section rod forming device comprises a mould box arranged on the chassis, a pressure pump for conveying curing liquid to the mould box and a liquid storage box for storing the curing liquid, wherein the guide rod is matched with the mould box, the curing liquid conveyed into the mould box is solidified to form a section rod and is fixedly connected with the guide rod, and the width of the section rod is the same as that of the guide rod; the driving device comprises two gears and a gear driving mechanism, the two gears can be rotatably installed on the chassis, the gear driving mechanism is connected with the gear to drive the gear to rotate, the rotating gear drives the guide rod or the sectional rod to move to the outside of the outer pipe, and the guide rod and the sectional rod which are matched with each other to move on the outer pipe and the inner pipe are correspondingly provided with guide holes.
Preferably, the anti-floating method of the anchor rod comprises the following steps:
step 1: when the installation is started, the gear is connected with the pilot rod;
step 2: setting a mould box to manufacture N segmented rods, wherein the numbers of the segmented rods generated according to the time sequence are 1, 2, … and N;
and step 3: the solidified liquid in the liquid storage tank is injected into the mould box by a pressure pump, then the solidified liquid in the mould box is converted into a solidified sectional rod, the number of the sectional rod is 1, and the number 1 sectional rod is fixedly connected with the pilot rod;
and 4, step 4: then the gear drives the first guide rod to enter the soft soil from the guide hole, and the first guide rod pulls the solidified No. 1 segmented rod and frees the space in the mold box;
and 5: the solidified liquid in the liquid storage tank is injected into the mould box by a pressure pump, then the solidified liquid in the mould box is converted into solidified sectional rods, the number of the sectional rods in the mould box is i, and the number i of the sectional rods in the mould box is fixedly connected with the number i-1 of the sectional rods;
step 6: then the segmented rod No. i-1 in gear drive contact enters soft soil from a guide-out hole, and at the moment, the segmented rod No. i-1 pulls the segmented rod No. i in the mold box and vacates the space in the mold box;
and 7: and (5) repeating the steps 5 to 6 until a specified number of sectional rods are driven into the soft soil.
Preferably, the method for driving the leading rod or the segmented rod to move by the gear comprises the following steps: the two gears are respectively arranged on two sides of the first guide rod, and the first guide rod or the segmented rod is extruded while the two gears rotate so as to drive the first guide rod or the segmented rod to move; or, the two side surfaces of the pilot rod are respectively provided with a rack, the gear is meshed with the racks, a rack mounting device for fixing the racks on the side surfaces of the sectional rods is arranged in the die box, and the rack mounting device is meshed with the racks to drive the first guide rod or the sectional rods to move when the gear rotates.
Preferably, the rack mounting device comprises a pushing mechanism, a rack, a strip storage chamber, a spring and a push plate; store the strip room and be 2 and the symmetry setting, arbitrary and store the strip indoor rack queue that is equipped with, the spring promotes the rack through push pedal and rack queue cooperation and moves to the below exit of storing the strip room, and pushing mechanism is two and sets up respectively in each and stores strip room below, and pushing mechanism is used for promoting and stores the outdoor rack of strip and move the preset distance to another pushing mechanism, and two racks and the mould case that move the preset distance and segmentation pole or guide bar cooperation form the solidification groove that supplies the solidification liquid to hold.
Preferably, the tail end of each segmented rod is provided with a connecting hole, a connecting hole forming device is arranged in the die box corresponding to the tail end of the segmented rod, and the connecting hole forming device comprises a deformation body and a temperature control system, wherein one end of the deformation body is fixedly connected with the die box, and the temperature control system is used for controlling the temperature of the deformation body; the end of the first guide rod, which is contacted with the No. 1 segmented rod, is provided with a hole, and the inlet of the hole is small and is enlarged in the first guide rod.
Preferably, the deformable body is made of shape memory alloy, the connecting end of the deformable body and the die box is a first end, and the opposite end is a second end; when the curing liquid is liquid in the die box, the temperature control system controls the deformation body to be at a first temperature, and the first end of the deformation body is smaller than the second end at the first temperature; after the solidification liquid is converted into a solid in the mold box, the temperature control system controls the deformation body to be at a second temperature, and the first end of the deformation body is larger than the second end at the second temperature.
Preferably, No. i segmentation pole and No. i-1 segmentation pole add device fixed connection through the return bend, and the return bend adds the device and includes return bend connecting piece, panel cavity and panel push mechanism, and the return bend connecting piece arranges the setting in proper order, and the return bend connecting piece includes a panel and sets up a plurality of return bends on the panel, and all return bends of fixed setting on same panel all are equipped with the opening, the opening setting is keeping away from the panel one end of fixed setting, panel cavity and mould case tail end fixed connection, and panel push mechanism is fixed to be set up in the panel cavity, panel push mechanism and panel contact.
Preferably, reinforced lines are distributed in the segmented rods, and two ends of each reinforced line are fixed in the same bent pipe or two ends of each reinforced line are distributed on the panels of two adjacent segmented rods.
Preferably, the anchor rod further comprises a first auxiliary reinforcing device, the first auxiliary reinforcing device comprises a pull rope and a tightening device, the tightening device is installed on the outer pipe, one end of the pull rope is arranged in the tightening device, the other end of the pull rope is arranged in the leading-out hole and is fixedly connected with the pilot rod, and the pull rope is connected with the tightening device and the pilot rod through the outer side of the outer pipe; when the guide rod enters the soft soil through the guide hole, the pull rope is freely extended by the tightening device, and when the guide rod enters the soft soil layer to reach the specified length, the pull rope is fixed by the tightening device and cannot be freely extended.
Preferably, adjacent guide rods are connected through circumferential lines, the circumferential lines are arranged on the outer side of the outer pipe, and the circumferential lines are connected with the outer side of the outer pipe through flexible cloth or a wire mesh.
Preferably, the first guide rod is provided with an inclinometer, and the inclinometer is arranged at one end, far away from the outer tube, of the first guide rod; mounting an inclinometer on a rack of the sectional rod, wherein the inclinometer is pressed into the sectional rod along with the rack; after the segmented rods are pressed into the soil by a specified number, the inclinometer is placed at the junction of the segmented rods and the outer pipe for the segmented rods in contact with the outer pipe; the method for calculating the vertical acting force of the rod piece on the anchor rod comprises the following steps:
(1) step 1, a guide rod and a sectional rod which extend into soft soil from a guide hole form an integral rod piece, the total length of the rod piece in the soft soil is L, m +1 inclinometers are arranged, and the rod piece with the total length of L is divided into m sections; setting the serial number of an inclinometer at the junction of the segmented rod and the outer pipe to be 1, the serial number of the inclinometer farthest away from the outer pipe to be m +1, and sequentially increasing the serial numbers of nodes between the inclinometer 1 and the inclinometer m + 1;
(2) step 2, setting nodes corresponding to the ith inclinometer and the (i + 1) th inclinometer as an ith node and an (i + 1) th node respectively, setting an ith section between the ith node and the (i + 1) th node and setting the length of the ith section as L(i)Young's modulus of E(i)Moment of inertia of I(i)The number corresponding to the node of the ith section close to the outer tube is i1And the node of the ith section far away from the outer tube corresponds to the serial number i2Setting the vertical displacement and the rotation angle corresponding to the node of the ith section close to the outer pipe as
Figure BDA0003334116590000051
And
Figure BDA0003334116590000052
the ith section is far away fromThe vertical displacement and the rotation angle corresponding to the node of the outer pipe are respectively
Figure BDA0003334116590000053
And
Figure BDA0003334116590000054
here (1. ltoreq. i.ltoreq.m);
(3) step 3, measuring a rotation angle theta corresponding to each node based on the inclinometerj(ii) a Taking the vertical displacement v of the node when j is equal to 1jWhen j is more than 1, taking the vertical displacement on the node j as
Figure BDA0003334116590000055
Thus obtaining the displacement and the rotation angle on each node;
(4) step 4, the length L of the segment i(i)Young's modulus E(i)Moment of inertia I(i)Vertical displacement on two nodes
Figure BDA0003334116590000056
And
Figure BDA0003334116590000057
corner at two nodes
Figure BDA0003334116590000058
And
Figure BDA0003334116590000059
thereby calculating the node force of two nodes on the i-th segment
Figure BDA00033341165900000510
And
Figure BDA00033341165900000511
calculating the bending moment of two nodes on the ith section
Figure BDA00033341165900000512
And
Figure BDA00033341165900000513
the calculation method comprises the following steps:
Figure BDA00033341165900000514
Figure BDA00033341165900000515
(5) step 5, a guide rod and a sectional rod which extend into the soft soil from a guide hole form an integral rod piece, and the vertical force of the rod piece on the anchor rod is calculated
Figure BDA00033341165900000516
Calculating the bending moment of the rod on the anchor rod
Figure BDA0003334116590000061
Based on the vertical force F of the rod piece to the outer pipe, the vertical force shared by the rod piece and the outer pipe can be obtained through calculation and analysis, wherein the soil friction force borne by the outer pipe can be determined through a conventional method, for example, the axial strain is measured on the outer pipe in a segmented mode, so that the friction resistance of lateral soil is calculated; in addition, whether the stress of the segmented rod exceeds the strength of the segmented rod or not can be checked through the vertical force F and the bending moment M at the junction of the segmented rod and the outer pipe.
The invention has the beneficial effects that the anti-floating performance of the anti-floating anchor rod of the underground structure in the soft soil is enhanced, namely, the injection molded sectional rods are sequentially connected to be used as reinforcing rods to enter the soft soil, so that the anti-floating force of the anchor rod is increased, and the injection molded sectional rods can effectively increase the length of the soil entering part of the reinforcing rods.
Drawings
FIG. 1 is a schematic view of a driving bolt of the present invention;
FIG. 2 is a schematic top view of the segmented rod forming and moving of the present invention;
FIG. 3 is a schematic top view of the driving device of the present invention;
FIG. 4 is a schematic longitudinal cross-sectional view of a rack mounting apparatus of the present invention;
FIG. 5 is a schematic view of a variant of the invention;
FIG. 6 is a schematic view of a bend addition apparatus of the present invention;
FIG. 7 is a schematic view of a reinforcement line of the bend adding device of the present invention;
FIG. 8 is a schematic view of a first auxiliary enhancement device of the present invention;
FIG. 9 is a schematic circumferential line view of the present invention;
FIG. 10 is a schematic view of a first sleeve and a second sleeve of the present invention;
in the figure, 1, soft soil, 2, anchor rods, 3, an outer pipe, 4, an inner pipe, 5, a guide hole, 6, curing liquid, 7, a liquid storage tank, 8, a pressure pump, 9, a mold box, 10, a guide rod, 11, a segmented rod, 12, a chassis, 13, a gear, 14, a gear driving mechanism, 15, a pusher, 16, a push rod, 17, a rack, 18, a strip storage chamber, 19, a spring, 20, a push plate, 21, a deformation body, 22, a temperature control system, 23, a bent pipe adding device, 24, a panel, 25, a bent pipe, 26, a panel chamber, 27, a panel pushing mechanism, 28, a reinforcing wire, 29, a pull rope, 30, a tightening device, 31, a circumferential wire, 32, flexible cloth, 33, a first sleeve and 34, a second sleeve.
Detailed Description
In order to make the technical means, innovative features, objectives and effects of the present invention easy to understand, the following detailed description of the technical solution of the present invention with reference to the drawings.
An anchor rod 2 for increasing anti-buoyancy in soft soil 1 as shown in fig. 1-10 comprises an outer pipe 3, an inner pipe 4, a chassis 12, a pilot rod 10, a segmented rod forming device and a driving device; the inner pipe 4 and the outer pipe 3 are concentrically arranged, the inner pipe 4 is rotatably arranged in the outer pipe 3, the chassis 12 is fixedly arranged in the inner pipe, the segmented rod forming device comprises a mould box 9 arranged on the chassis 12, a pressure pump 8 for conveying curing liquid to the mould box 9 and a liquid storage box 7 for storing the curing liquid, the input end of the pressure pump 8 is communicated with the liquid storage box 7, the output end of the pressure pump 8 is communicated with 4 mould boxes 9 through a guide pipe, the liquid-state curing liquid in the liquid storage box 7 can be conveyed to all the mould boxes 9 through the pressure pump 8, the liquid storage box 7 and the pressure pump 8 are arranged on the ground outside soft soil, a guide rod 10 is matched with the mould box 9, the curing liquid conveyed into the mould boxes 9 is solidified to form a segmented rod 11 which is fixedly connected with a pilot rod 10, and the width of the segmented rod 11 is the same as that of the pilot rod 10; in the invention, one side of the mold box 9 corresponding to the pilot rod 10 is an opening side, and the mold box 9 and the pilot rod 10 are matched to form a curing tank for containing curing liquid. The driving device comprises gears 13 and a gear driving mechanism 14, wherein the number of the gears 13 is 2, and the gears 13 can be rotatably arranged on the chassis 12, wherein the gears 13 of the 2 are respectively arranged at two sides of the guide rod 10, but the gears 13 are not connected with the guide rod 10; the gear driving mechanism 14 is a motor, the number of the motors is 2, the motor is connected with a gear 13 shaft to drive the gear 13 to rotate, the two gears rotate simultaneously to drive the first guide rod 10 or the segmentation rod 11 to move to the soil layer 1 outside the outer pipe, and the outer pipe 3 and the inner pipe 4 are both internally provided with a guide hole, so that the first guide rod 10 and the segmentation rod 11 connected with the guide rod can move to the outside of the outer pipe 3 through the guide hole 5.
In the embodiment of the present invention, the number of the segmented rod forming devices is 4, the segmented rod forming devices are arranged at equal intervals along the circumferential direction, the number of the first guide rods 10 is at least 4, the 4 first guide rods are correspondingly matched with the 4 segmented rod forming devices, the segmented rod forming devices and the driving devices are arranged in a one-to-one correspondence manner, when the number of the first guide rods 10 is greater than 4, for example, 8, and the segmented rod forming devices are arranged at equal intervals along the circumferential direction, the segmented rod forming devices can be rotated to the corresponding position of the next first guide rod by rotating the inner tube 4, so that the segmented rods 11 are formed at the corresponding position and connected with the corresponding pilot rods 10, and then the segmented rods move out of the outer tube 3 under the action of the driving devices, and certainly, the number of the guide holes on the inner tube and the outer tube is 8. In the present invention, the number of the outlet holes 5, the pilot rods 10, the segment rod forming device and the driving device can be set by those skilled in the art according to the actual situation.
In the invention, a solidified liquid 6 is injected into a mold box 9 by a pressure pump 8 to form a solid i-th segmented rod 11, wherein i is 1, 2, 3, the i-th segmented rod 11 is fixedly connected with an i-1-th segmented rod 11, and when i is 1, the 1-th segmented rod 11 is fixedly connected with a pilot rod 10.
The anti-floating method of the anchor rod 2 for increasing the anti-floating force in the soft soil 1 comprises the following steps:
step 1: as shown in fig. 1(a), the anchor rod 2 is driven into the soft soil 1, and when installation is started, as shown in fig. 2(a), the two gears 13 are matched with the corresponding pilot rods 10;
step 2: if N segmented rods 11 are manufactured in the mold box 9, the segmented rods 11 generated in time sequence are numbered 1, 2, …, N;
and step 3: as shown in fig. 2(b), the solidifying liquid 6 in the liquid storage tank 7 is injected into the mold box 9 by the pressure pump 8, then the solidifying liquid 6 in the mold box 9 is transformed into a solidified segmented rod 11, and the segmented rod 11 is numbered 1, and the segment rod 11 No. 1 is fixedly connected with the pilot rod 10;
and 4, step 4: the gear 13 rotates under the action of the gear driving device, the rotating gear 13 drives the first guide rod 10 to enter the soft soil 1 from the guide hole 5, and as shown in fig. 2(c), the first guide rod 10 pulls the solidified No. 1 segmented rod 11 and vacates the space in the mold box 9;
and 5: as shown in fig. 2(d), the solidifying liquid 6 in the liquid storage tank 7 is injected into the mold box 9 by the pressure pump 8, and then the solidifying liquid 6 in the mold box 9 is transformed into a solidified segmented rod 11, wherein the segmented rod 11 in the mold box 9 is numbered i, and the segmented rod 11 i in the mold box 9 is fixedly connected with the segmented rod 11 i-1;
step 6: the segmented rod 11 No. i-1 in contact with the gear 13 in a driving mode enters the soft soil 2 through the guide hole 5, and at the moment, the segmented rod 11 No. i-1 pulls the segmented rod 11 No. i in the mold box 9 and vacates a space in the mold box 9;
and 7: and (5) repeating the steps (5) to (6) until a specified number N of segmented rods 11 are driven into the soft soil 1, as shown in figure 1 (b).
Specifically, the manner in which the gear 13 drives the first guide rod 10 or the segment rod 11 to move may be the manner shown in fig. 2, in which a rack 17 is installed on the side surface of the guide rod 10, a rack installation device is installed in the mold box 9, the rack installation device fixes the rack 17 on the side surface of the segment rod 11, and the gear 13 is engaged with the rack 17 when rotating, thereby driving the first guide rod 10 or the segment rod 11 to move. The rack mounting device comprises a pushing mechanism, a rack 17, a strip storage chamber 18, a spring 19 and a push plate 20; store a room 18 and be 2 and the symmetry setting, be equipped with the rack queue in arbitrary storing a room 18, spring 19 promotes rack 17 through push pedal 20 and rack queue cooperation and moves to the below exit of storing a room 18, and pushing mechanism is two and sets up respectively in each storing a room 18 below, and pushing mechanism is used for promoting to store rack 17 outside a room 18 and moves the preset distance to another pushing mechanism, and two racks 17 and mould case 9 and segmentation pole 10 or the guide bar 11 cooperation that move the preset distance form the solidification tank that supplies the solidification liquid to hold. Taking a mold box arranged at the front side as an example, as shown in fig. 4(a), two strip storage chambers 18 are arranged in the mold box 9 in bilateral symmetry, the inner wall of the strip storage chamber 18 is connected with a push plate 20 through a spring 19, the push plate 20 pushes a rack array, the rack array is a plurality of racks 17 which are arranged in sequence and transversely, an outlet for accommodating one rack 17 to fall is arranged at one side of the bottom of the strip storage chamber 18 far away from the spring 19, the two racks 17, the mold box 9 and a pilot rod or a sectional rod are matched to form a solidification groove, when the solidification liquid 6 is gradually changed into a solid sectional rod 11 in the mold box 9, the strength of the solidification liquid is in an ascending stage and does not reach a stable value, two driving mechanisms are arranged in the mold box 9 below each strip storage chamber 18, each driving mechanism comprises a pusher 15 and a push rod 16, the mold box 9 is connected with the push rod 16 through the pusher 15, the pusher 15 is used for pushing the rack to move towards the other pusher 16, so that the push rod 16 is arranged in the mold box 18, and the pusher 15 shown in fig. 4(b), and the pusher 15) drives the push rod 16 to move so that the push rod 16 is arranged at this moment At the opening, the rack 17 is pressed into the sectional rod 11 while the rack in the rack storage chamber 18 is prevented from falling under the action of the spring, and the cross section of the sectional rod 11 horizontally contracts and vertically extends; after the solidification liquid is arranged in the solidification groove, the solidification liquid is solidified to form a segmented rod, and when the pusher is reset, a new rack 17 descends from the outlet of the storage rack chamber 18 to be contacted with the push rod 16 as shown in figure 4 (c).
Of course, the way of the gear 13 driving the pilot rod 10 or the segment rod 11 to move may also be: two gears 13 are respectively arranged on two sides of the route where the guide rod 10 and the segment rod 11 pass through; the two gears 13 rotate and simultaneously press the leader 10 or the segment rod 11, thereby moving the leader 10 or the segment rod 1 l.
Further, as shown in fig. 5, each tail end of the segment rod 11 is provided with a connecting hole, a connecting hole forming device is arranged at the tail end of the corresponding segment rod 11 inside the mold box 9, and the connecting hole forming device includes a deformation body 21 with one end fixedly connected with the mold box 9 and a temperature control system for controlling the temperature of the deformation body 21. The deformable body 21 is made of shape memory alloy, the connecting end of the deformable body 21 and the die box 9 is a first end, and the opposite end is a second end; when the curing liquid 6 is liquid in the mold box 9, as shown in fig. 5(b), the temperature control system controls the deformable body to be at a first temperature, and the first end of the deformable body is smaller than the second end at the first temperature; after the solidification liquid 6 is converted into a solid in the mold box 9, as shown in fig. 5(a), the temperature control system controls the deformable body to be at a second temperature at which the first end of the deformable body is larger than the second end. The deformable body is used for forming a hole with a small inlet and a large inner part in the curing liquid, the first end of the deformable body corresponds to the inlet of the connecting hole when the curing liquid is changed into a solid, and the second end of the deformable body corresponds to the inner part of the connecting hole when the curing liquid is changed into the solid. After the solidification liquid 6 is converted into a solid in the mold box 9 to form an i-1 segmented rod 11, the i-1 segmented rod 11 is pulled out of the mold box 9 by the previously formed segmented rod 11, and at the moment, a connecting hole with a small surface and a large inner part is formed at the tail part of the i-1 segmented rod 9; then when the solidification liquid 6 is injected into the mold box 9 to prepare the i-th segmented rod 11, the solidification liquid 6 also flows into the connecting hole with the small surface and the large inner part of the i-1-th segmented rod 11, and after the i-th segmented rod 11 is prepared, the i-1-th segmented rod 11 and the i-th segmented rod 11 are connected.
The pilot rod 10 is provided with a hole on the contact surface of the No. 1 segmented rod 11 connected with the pilot rod, and the hole has a small inlet and is expanded inside the pilot rod 10; when the No. 1 segmented rod 11 is manufactured, the curing liquid 6 flows into the hole of the pilot rod 10, and after the curing liquid 6 is changed into a solid, the pilot rod 10 is fixedly connected with the No. 1 segmented rod 11.
In the invention, the temperature control system is a temperature control device, and the heating method of the temperature control device can be resistance wire heating, microwave heating or infrared heating. The specific structure of the temperature control device is common knowledge in the field, and the temperature control device can be set by a person skilled in the art according to the actual situation.
As shown in fig. 6, the i-th segmented rod 11 in the mold box 9 and the previous i-1 th segmented rod 11 can also be fixedly connected by a bent pipe adding device 23, similarly, the i-th segmented rod 11 in the mold box 9 is attached to the corresponding side of the i-1 th segmented rod 11, the bent pipe adding device 23 includes a bent pipe connecting member, a panel chamber 26 and a panel pushing mechanism 27, the bent pipe connecting member is sequentially arranged in the panel chamber 26, the bent pipe connecting member includes a panel and a plurality of bent pipes fixedly arranged on the panel, all the bent pipes fixedly arranged on the same panel are provided with openings, the opening is arranged at one end far away from the fixedly arranged panel, namely towards the guide hole, the panel cavity 26 is connected with the tail end of the die box 9, the panel pushing mechanism 27 is fixedly arranged in the panel cavity 26, and the panel pushing mechanism 27 is contacted with the panel 24 to push the bent pipe connecting piece; when the curing liquid 6 is liquid in the mold box 9, the panel pushing mechanism 27 pushes the elbow connecting piece, so that the elbow of the elbow connecting piece is arranged in the curing liquid of the mold box 9, the elbow 25 is open, so that the curing liquid can enter the elbow 25 from the opening, after the curing liquid 6 is cured into a segmented rod, the elbow 25 is arranged in the segmented rod, and the panel fixedly connected with the elbow 25 is fixedly arranged at the tail end of the segmented rod; when the solidification liquid 6 is changed into the i-1 th solid sectional rod 11 in the mold box 9, the bent pipe 25 and the panel 24 become a part of the i-1 th sectional rod 11; after the i-1 th solid sectional rod 11 is pulled out of the mold box 9, when the curing liquid 6 is injected into the mold box 9 to prepare the i-th sectional rod 11, the curing liquid 6 also flows into the bent pipe of the i-1 th sectional rod 11, and after the i-th solid sectional rod 11 is prepared, the i-1 th sectional rod 11 and the i-th sectional rod l1 are connected.
As shown in fig. 7, a reinforcement wire 28 is disposed in the segment bar 11, and both ends of the reinforcement wire 28 are fixed in the same bent pipe 25, or both ends of the reinforcement wire 28 are disposed on the face plates 24 of two adjacent segment bars 11, thereby reinforcing the coupling strength of two adjacent segment bars 11.
Further, as shown in fig. 8(a), the anchor rod 2 further includes a first auxiliary reinforcing device, the first auxiliary reinforcing device includes a pulling rope 29 and a tightening device 30, the tightening device 30 is fixedly installed on the outer tube 3, one end of the pulling rope 29 is disposed in the tightening device, the other end of the pulling rope is disposed in the guiding hole and is fixedly connected with the pilot rod, and the pulling rope 29 is connected with the tightening device 30 and the pilot rod 10 through the outer side of the outer tube 3; as shown in fig. 8(b), during the process that the pilot rod 10 enters the soft soil 2 through the guide-out hole 5, the tightening device 30 allows the pull rope 29 to freely extend; when the guide rod 10 enters the soft soil layer 1 to reach a specified length, the tensioning device 30 fixes the pull rope 29, and the pull rope 29 cannot freely extend. For example, the tightening device 30 is a motor and a roller connected, and the pull rope 29 is wound on the roller and has one end fixedly connected with the roller; firstly, in the process that the guide rod 10 enters the soft soil layer 1 through the guide hole 5, the motor drives the roller to rotate, and the length of the pull rope 29 in the soft soil layer 1 is increased; when the guide rod 10 enters the soft soil 1 layer to reach the designated length, the roller is fixed, and the pull rope 29 can not freely extend. The end part of the leading guide rod 10 entering the soft soil 1 layer provides pulling force through the pulling rope 29, so that the capability of the leading guide rod 10 and the segmentation rod 11 connected subsequently to the leading guide rod 10 to resist soil pressure is increased in the anti-floating process, and the leading guide rod 10 or the segmentation rod 11 is prevented from being bent and broken near the side surface of the outer pipe 3.
As shown in fig. 9, the adjacent first guide rods 10 are connected by a circumferential line 31, the circumferential line 31 passes through the outside of the outer tube 3, and the circumferential line 31 is connected with the outside of the outer tube 3 by a flexible cloth 32 or a wire mesh. Thus, after the guide rod 10 enters the soft soil 1 layer, the unfolded flexible cloth 32 or the wire mesh increases the pulling resistance of the anchor rod 2 in the anti-floating process.
Preferably, one end of the guide rod 10 is disposed in the guide hole of the outer tube 3 and extends to the outside of the outer tube 3, an expansion member is disposed between two adjacent guide rods 10, two ends of the expansion member are fixedly connected to the ends of the two connected guide rods 10 extending out of the outer tube, the expansion member includes a first sleeve 33 and a second sleeve 34, the first sleeve 33 is sleeved on the second sleeve 34, the second sleeve 34 can slide in the first sleeve 33, and the length of the second sleeve is smaller than the sliding stroke of the second sleeve, so that the second sleeve cannot be disengaged from the first sleeve. The first sleeve 33 is connected with the outside of the outer tube 3 with a flexible cloth 32 or a wire mesh.
Further, whether the stress of the segmented rod 11 exceeds the strength of the segmented rod is checked by calculating the vertical force F and the bending moment M at the junction of the segmented rod 11 and the outer pipe 3, and the calculating method comprises the following steps:
an inclinometer is arranged on the first guide rod 10, and the inclinometer is arranged at one end, far away from the outer tube 3, of the first guide rod 10; an inclinometer is arranged on a rack 17 of the segmented rod 11 and is pressed into the segmented rod 11 along with the rack 17; after the number of the segmented rods pressed into the soft soil 1 reaches a preset value, for the last segmented rod 11, the segmented rod 11 is in contact with the outer pipe 3, and an inclinometer is arranged at the junction of the segmented rod 11 and the outer pipe 3; the pilot rod 10 extending into the soft soil 1 from one guide hole 5 and the segmented rod 11 form an integral rod piece, and the vertical acting force of the rod piece on the anchor rod 2 is calculated by the following method:
(1) step 1, a guide rod 10 and a sectional rod 11 extending into soft soil 1 from a guide hole 5 form an integral rod piece, the total length of the rod piece in the soft soil 1 is L, the sectional rod arranged in an outer pipe is not included, m +1 inclinometers are arranged, and the rod piece with the total length of L is divided into m sections; the serial number of an inclinometer at the junction of the segmented rod 11 and the outer tube 3 is 1, the serial number of the inclinometer farthest away from the outer tube 3 is m +1, and the serial numbers of nodes between the inclinometer 1 and the inclinometer m +1 are sequentially increased;
(2) step 2, setting nodes corresponding to the ith inclinometer and the (i + 1) th inclinometer as an ith node and an (i + 1) th node respectively, setting an ith section between the ith node and the (i + 1) th node, and setting the length of the ith section as L(i)Young's modulus of E(i)Moment of inertia of I(i)The node of the ith section close to the outer tube 3 corresponds to the number i1The node of the ith section far away from the outer tube 3 corresponds to the serial number i2The vertical displacement and the rotation angle corresponding to the node of the ith section close to the outer tube 3 are respectively
Figure BDA0003334116590000151
And
Figure BDA0003334116590000152
the vertical displacement and the corner corresponding to the node of the ith section far away from the outer tube 3 are respectively
Figure BDA0003334116590000153
And
Figure BDA0003334116590000154
here (1. ltoreq. i.ltoreq.m);
(3) step 3, measuring a rotation angle theta corresponding to each node based on the inclinometeriJ represents the current node number, and when j is 1, the vertical displacement v of the node is takenjWhen j is more than 1, taking the vertical displacement on the node j as
Figure BDA0003334116590000155
Thus obtaining the displacement and the rotation angle on each node;
(4) step 4, the length L of the segment i(i)Young's modulus E(i)Moment of inertia I(i)Vertical displacement on two nodes
Figure BDA0003334116590000156
And
Figure BDA0003334116590000157
corner at two nodes
Figure BDA0003334116590000158
And
Figure BDA0003334116590000159
calculating the node force of two nodes on the ith segment
Figure BDA00033341165900001510
And
Figure BDA00033341165900001511
and bending moment on two nodes on the ith section
Figure BDA00033341165900001512
And
Figure BDA00033341165900001513
the calculation method comprises the following steps:
Figure BDA00033341165900001514
Figure BDA00033341165900001515
(5) step 5, a guide rod 10 extending into the soft soil 1 from a guide hole 5 and a sectional rod 11 form an integral rod piece, and the vertical force of the rod piece on the anchor rod 2 is calculated
Figure BDA00033341165900001516
Calculating the bending moment of the rod on the anchor rod 2
Figure BDA00033341165900001517
The invention can calculate and analyze the vertical force shared by the rod piece and the outer pipe 3 based on the vertical force F of the rod piece to the outer pipe 3 of the anchor rod 2 and the soil friction force received by the outer pipe 3, wherein the soil friction force received by the outer pipe 3 can be determined by a conventional method, for example, the axial strain is measured on the outer pipe 3 in sections so as to calculate the lateral soil friction resistance.

Claims (10)

1. The utility model provides an increase stock of anti buoyancy in soft soil which characterized in that: comprises an outer pipe, an inner pipe, a chassis, a guide rod, a sectional rod forming device and a driving device; the inner pipe and the outer pipe are arranged concentrically, the inner pipe is rotatably arranged in the outer pipe, and the chassis is fixedly arranged in the inner pipe; the section rod forming device comprises a mould box arranged on the chassis, a pressure pump for conveying curing liquid to the mould box and a liquid storage box for storing the curing liquid, wherein the guide rod is matched with the mould box, the curing liquid conveyed into the mould box is solidified to form a section rod and is fixedly connected with the guide rod, and the width of the section rod is the same as that of the guide rod; the driving device comprises two gears and a gear driving mechanism, the two gears can be rotatably installed on the chassis, the gear driving mechanism is connected with the gear to drive the gear to rotate, the rotating gear drives the guide rod or the sectional rod to move to the outside of the outer pipe, and the guide rod and the sectional rod which are matched with each other to move on the outer pipe and the inner pipe are correspondingly provided with guide holes.
2. An anchor rod for increasing anti-buoyancy in soft soil according to claim 1, wherein: the anti-floating method of the anchor rod comprises the following steps:
step 1: when the installation is started, the gear is connected with the pilot rod;
step 2: setting a mould box to manufacture N segmented rods, wherein the numbers of the segmented rods generated according to the time sequence are 1, 2, … and N;
and step 3: the solidified liquid in the liquid storage tank is injected into the mould box by a pressure pump, then the solidified liquid in the mould box is converted into a solidified sectional rod, the number of the sectional rod is 1, and the number 1 sectional rod is fixedly connected with the pilot rod;
and 4, step 4: then the gear drives the first guide rod to enter the soft soil from the guide hole, and the first guide rod pulls the solidified No. 1 segmented rod and frees the space in the mold box;
and 5: the solidified liquid in the liquid storage tank is injected into the mould box by a pressure pump, then the solidified liquid in the mould box is converted into solidified sectional rods, the number of the sectional rods in the mould box is i, and the number i of the sectional rods in the mould box is fixedly connected with the number i-1 of the sectional rods;
step 6: then the segmented rod No. i-1 in gear drive contact enters soft soil from a guide-out hole, and at the moment, the segmented rod No. i-1 pulls the segmented rod No. i in the mold box and vacates the space in the mold box;
and 7: and (5) repeating the steps 5 to 6 until a specified number of sectional rods are driven into the soft soil.
3. An anchor rod for increasing anti-buoyancy in soft soil according to claim 1, wherein: the method for driving the pilot rod or the segmented rod to move by the gear comprises the following steps: the two gears are respectively arranged on two sides of the first guide rod, and the first guide rod or the segmented rod is extruded while the two gears rotate so as to drive the first guide rod or the segmented rod to move; or, the two side surfaces of the pilot rod are respectively provided with a rack, the gear is meshed with the racks, a rack mounting device for fixing the racks on the side surfaces of the sectional rods is arranged in the die box, and the rack mounting device is meshed with the racks to drive the first guide rod or the sectional rods to move when the gear rotates.
4. An anchor rod for increasing anti-buoyancy in soft soil according to claim 3, wherein: the rack mounting device comprises a pushing mechanism, a rack, a strip storage chamber, a spring and a push plate; store the strip room and be 2 and the symmetry setting, arbitrary and store the strip indoor rack queue that is equipped with, the spring promotes the rack through push pedal and rack queue cooperation and moves to the below exit of storing the strip room, and pushing mechanism is two and sets up respectively in each and stores strip room below, and pushing mechanism is used for promoting and stores the outdoor rack of strip and move the preset distance to another pushing mechanism, and two racks and the mould case that move the preset distance and segmentation pole or guide bar cooperation form the solidification groove that supplies the solidification liquid to hold.
5. An anchor rod for increasing anti-buoyancy in soft soil according to any one of claims 1 to 4, wherein: the tail end of each segmented rod is provided with a connecting hole, a connecting hole forming device is arranged in the die box corresponding to the tail end of the segmented rod, and the connecting hole forming device comprises a deformation body and a temperature control system, wherein one end of the deformation body is fixedly connected with the die box, and the temperature control system is used for controlling the temperature of the deformation body; the end of the first guide rod, which is contacted with the No. 1 segmented rod, is provided with a hole, and the inlet of the hole is small and is enlarged in the first guide rod.
6. An anchor rod for increasing anti-buoyancy force in soft soil according to claim 5, wherein: the deformable body is made of shape memory alloy, the connecting end of the deformable body and the die box is a first end, and the opposite end is a second end; when the curing liquid is liquid in the die box, the temperature control system controls the deformation body to be at a first temperature, and the first end of the deformation body is smaller than the second end at the first temperature; after the solidification liquid is converted into a solid in the mold box, the temperature control system controls the deformation body to be at a second temperature, and the first end of the deformation body is larger than the second end at the second temperature.
7. An anchor rod for increasing anti-buoyancy in soft soil according to any one of claims 1 to 4, wherein: no. i segmentation pole and No. i-1 segmentation pole pass through the return bend and add device fixed connection, and the return bend adds the device and includes return bend connecting piece, panel cavity and panel push mechanism, and the return bend connecting piece is arranged the setting in proper order, and the return bend connecting piece includes a panel and sets up a plurality of return bends on the panel, and all return bends of fixed setting on same panel all are equipped with the opening, the opening sets up in the panel one end of keeping away from fixed setting, panel cavity and mould case tail end fixed connection, and panel push mechanism is fixed to be set up in the panel cavity, panel push mechanism and panel contact.
8. An anchor rod for increasing anti-buoyancy force in soft soil according to claim 7, wherein: reinforced lines are arranged in the segmented rods, and two ends of each reinforced line are fixed in the same bent pipe or two ends of each reinforced line are arranged on the panels of two adjacent segmented rods.
9. The anchor rod for increasing anti-buoyancy force in soft soil according to claim 1, is characterized in that: the first auxiliary reinforcing device comprises a pull rope and a tightening device, the tightening device is installed on the outer pipe, one end of the pull rope is arranged in the tightening device, the other end of the pull rope is arranged in the leading-out hole and is fixedly connected with the pilot rod, and the pull rope is connected with the tightening device and the pilot rod through the outer side of the outer pipe; when the guide rod enters the soft soil through the guide hole, the pull rope is freely extended by the tightening device, and when the guide rod enters the soft soil layer to reach the specified length, the pull rope is fixed by the tightening device and cannot be freely extended.
10. The anchor rod for increasing anti-buoyancy force in soft soil according to claim 1, is characterized in that: the adjacent guide rods are connected through circumferential lines, the circumferential lines are arranged on the outer side of the outer pipe, and the circumferential lines are connected with the outer side of the outer pipe through flexible cloth or a silk screen.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU64682U1 (en) * 2007-01-23 2007-07-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина DEVICE FOR INSTALLATION AND SEALING OF A HOLE OF A CASING HOLE IN A WELL
CN205858387U (en) * 2016-04-26 2017-01-04 安徽理工大学 A kind of device noting Anchor Agent serosity for laboratory from armature boring model bottom
CN206887952U (en) * 2017-05-09 2018-01-16 成都大学 A kind of injection molding type support anchor rod device
CN210917344U (en) * 2019-09-23 2020-07-03 中恒辉建设有限公司 Anti-floating anchor rod
CN113338806A (en) * 2021-05-08 2021-09-03 江苏富路建设有限公司 Ground anchor enlarged footing stock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU64682U1 (en) * 2007-01-23 2007-07-10 Открытое акционерное общество "Татнефть" им. В.Д. Шашина DEVICE FOR INSTALLATION AND SEALING OF A HOLE OF A CASING HOLE IN A WELL
CN205858387U (en) * 2016-04-26 2017-01-04 安徽理工大学 A kind of device noting Anchor Agent serosity for laboratory from armature boring model bottom
CN206887952U (en) * 2017-05-09 2018-01-16 成都大学 A kind of injection molding type support anchor rod device
CN210917344U (en) * 2019-09-23 2020-07-03 中恒辉建设有限公司 Anti-floating anchor rod
CN113338806A (en) * 2021-05-08 2021-09-03 江苏富路建设有限公司 Ground anchor enlarged footing stock

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