CN113737833B

CN113737833B - Open caisson construction formwork and construction method thereof

Info

Publication number: CN113737833B
Application number: CN202111056043.8A
Authority: CN
Inventors: 张永; 付欢; 吴靖江; 景玉婷; 宋九武; 胡连超; 李建伟; 张扬; 尹贺军
Original assignee: China Construction Seventh Engineering Division Corp Ltd; Transportation Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd
Current assignee: China Construction Seventh Engineering Division Corp Ltd; Transportation Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-09-09
Anticipated expiration: 2041-09-09
Also published as: CN113737833A

Abstract

The invention provides an open caisson construction template and a construction method thereof. Open caisson construction template is including setting up at the intraformational annular open caisson piece of soil, be equipped with the cylinder type in the annular open caisson piece and support the pile foundation, the outside of annular open caisson piece is equipped with a plurality of perpendicular type spliced poles, and a plurality of perpendicular type spliced poles are ring array and distribute, and the fixed cover of a plurality of perpendicular type spliced poles is equipped with same annular outer lane, annular outer lane and annular open caisson piece looks adaptation, be equipped with supporting mechanism, telescopic machanism and positioning mechanism in the annular open caisson piece, supporting mechanism is including square lattice column, square lattice column is including four perpendicular type angle steel, a plurality of horizontal festival steel and a plurality of slope type festival steel. The open caisson construction template and the construction method thereof have the advantages of being convenient to use, capable of simply and effectively supporting the interior of the open caisson during open caisson construction, reducing human intervention, improving working efficiency, and being simple and convenient to operate.

Description

Open caisson construction formwork and construction method thereof

Technical Field

The invention belongs to the technical field of open caisson construction, and particularly relates to an open caisson construction template and a construction method thereof.

Background

The open caisson is a well cylindrical structure, which is excavated in the well, and sinks to a designed elevation after overcoming the frictional resistance of the well wall by the self gravity, and then the open caisson is covered by concrete and is filled with a well hole to be used as the foundation of a bridge abutment or other structures, generally when a foundation pit, a sewage pump station, a large-scale equipment foundation, a civil air defense shelter, a shield assembly well of a large-scale pier is constructed, and an underground driveway and a station hydraulic foundation construction enclosure device are constructed, in the related technology, the open caisson template and the construction method thereof are disclosed, wherein the open caisson template comprises a plurality of standard segmental templates, each standard segmental template comprises a template unit and a supporting unit, and the template unit comprises: panel, a plurality of owner are stupefied, connecting piece, spiral latch closure, back of the body are stupefied, the support element include: the construction method is wide in application range, simple and convenient to construct, high in reliability, smooth and smooth in concrete surface and attractive in whole, and in addition, the construction method is high in construction speed, obvious in construction period effect, low in loss and low in cost.

However, the above structure has disadvantages that the open caisson is prone to incline when the open caisson is constructed, the well body is not vertical, the upper horizontal part has a height difference, the open caisson is difficult to sink, the excavation depth of the excavation surface is insufficient, the front resistance is too large, the sinking time is too long, and the lateral pressure recovery is increased.

Therefore, there is a need to provide a new open caisson construction formwork and a construction method thereof to solve the above technical problems.

Disclosure of Invention

The invention aims to provide the open caisson construction template and the construction method thereof, which are convenient to use, can simply and effectively support the interior of the open caisson during open caisson construction, reduce the intervention of manpower, improve the working efficiency and are simple and convenient to operate.

In order to solve the technical problems, the open caisson construction template provided by the invention comprises an annular open caisson block arranged in a soil layer, wherein a cylindrical supporting pile foundation is arranged in the annular open caisson block, a plurality of vertical connecting columns are arranged on the outer side of the annular open caisson block and distributed in an annular array, the plurality of vertical connecting columns are fixedly sleeved with the same annular outer ring, the annular outer ring is matched with the annular open caisson block, and a supporting mechanism, a telescopic mechanism and a positioning mechanism are arranged in the annular open caisson block;

the supporting mechanism comprises a square lattice column, the square lattice column comprises four vertical angle steels, a plurality of transverse section steels and a plurality of inclined section steels, the square lattice column is formed by assembling the four vertical angle steels, the plurality of transverse section steels and the plurality of inclined section steels, the square lattice column is arranged in an annular open caisson block, eight arc inner templates are arranged in the annular open caisson block and distributed in an annular array, an annular outer template is arranged on the outer side of the annular open caisson block and matched with the arc inner templates, a plurality of triangular supporting frames are arranged on the annular outer template, the arc inner templates are in contact with the inner wall of the annular open caisson block, a circular connecting block is sleeved on the square lattice column in a sliding manner, eight cross-shaped clamping blocks are installed on the circular connecting block in a sliding manner, one side, away from the circular connecting block, of each cross-shaped clamping block is provided with a first square mounting groove, the inner wall of the bottom of the square mounting groove I is fixedly provided with a hydraulic cylinder, an output shaft of the hydraulic cylinder is fixedly provided with a square moving block I, one side of the square moving block I extends to the outside of the corresponding square mounting groove I and is fixedly provided with a first hinge block, one side of the cross-shaped fixture block is fixedly provided with a second hinge block, the second hinge block is positioned below the corresponding first hinge block, the first hinge block and the second hinge block are both hinged with a riveting component, the two riveting components are matched, the riveting component comprises a plurality of hinge rods, the two corresponding hinge rods are mounted in a crossed mutual mode, and the circular connecting block is rotatably provided with a first threaded rod;

telescopic machanism is including eight square fixed blocks, and eight square fixed blocks are fixed mounting respectively on eight arc inner formworks, be equipped with square movable block two on the square fixed block, square movable block two is kept away from one side fixed mounting of the square fixed block that corresponds has two articulated pieces three, and two articulated pieces three are articulated mutually with two hinge bars that correspond respectively, square movable block two is close to one side of square fixed block and has been seted up square mounting groove two, square mounting groove two and the square fixed block sliding connection that corresponds, threaded rod two is installed to two internal rotations of square mounting groove, the bottom of threaded rod two extends to square mounting groove two outside, the top of threaded rod two is rotated and is installed trapezoidal fixture block, trapezoidal draw-in groove has been seted up to the bottom of square fixed block, trapezoidal draw-in groove and the trapezoidal fixture block looks adaptation that corresponds.

The positioning mechanism comprises a concave block, the concave block is arranged on a cylindrical supporting pile foundation, the top of the concave block is fixedly connected with a square lattice column, three first round through connecting holes are formed in the concave block, a transverse moving rod is slidably mounted in the first round through connecting holes, two ends of the transverse moving rod extend out of the first round through connecting holes, an arc-shaped clamping plate is fixedly mounted at one end, close to the cylindrical supporting pile foundation, of the transverse moving rod, a first spring is slidably sleeved on the transverse moving rod, one end of the first spring is fixedly connected with the arc-shaped clamping plate, the other end of the first spring is fixedly connected with the inner wall of one side of the concave block, first limiting sliding grooves are formed in the inner wall of the top and the inner wall of the bottom of the first round through connecting hole, a vertical positioning rod is slidably mounted in the first limiting sliding grooves, and a first ball is nested at one end, close to each other end of the two corresponding vertical positioning rods, circular clamping groove has all been seted up to transverse movement pole's top and bottom, circular clamping groove and the first ball looks adaptation that corresponds, equal fixed mounting has the second spring on the one side inner wall that two spacing spouts one was kept away from each other, the one end that two second springs are close to each other respectively with two vertical type locating levers fixed connection.

Be equipped with square mounting panel on the square lattice column, the top fixed mounting of square mounting panel has driving motor, fixed mounting has threaded rod three on driving motor's the output shaft, threaded rod three goes up the thread bush and is equipped with circular movable plate, be equipped with eight wire rope on the circular movable plate, the one end that circular movable plate was kept away from to wire rope is connected with the card cable, be equipped with first ring on the card cable, first ring fixed mounting is on the square fixed block that corresponds.

The first threaded rod is provided with a first bar-shaped block through threads, one side of the first bar-shaped block is fixedly connected with corresponding vertical angle steel, a first threaded hole is formed in the vertical angle steel, the first threaded hole is in threaded connection with the first threaded rod, the inner wall of the top of the first square mounting groove and the inner wall of the bottom of the first square mounting groove are fixedly provided with the same first fixing rod, a sliding sleeve of a square moving block is arranged on the corresponding first fixing rod, a cross-shaped buckling groove is formed in the top of the circular connecting block, an inner wall of one side of the cross-shaped buckling groove is provided with an opening, and the cross-shaped buckling groove is in sliding connection with the corresponding cross-shaped clamping block.

Set up spacing spout two on one side inner wall of square mounting groove two, slidable mounting has the second slide bar in the spacing spout two, second slide bar and the trapezoidal fixture block fixed connection who corresponds, set up the second screw hole on the bottom inner wall of square mounting groove two, two threaded connection of second screw hole and threaded rod, sliding sleeve is equipped with the third spring on the threaded rod two, the top and the trapezoidal fixture block fixed connection of third spring, the bottom of third spring and the bottom inner wall fixed connection of square mounting groove two, square through hole has been seted up at the top of circular connecting block, square through hole and square lattice column sliding connection.

The invention also provides a construction method of the open caisson construction template, which is characterized by comprising the following steps of:

s1: firstly, constructing a cylindrical support pile foundation at the center of an open caisson to be constructed, wherein the diameter of the cylindrical support pile foundation can be 100cm, the length of the cylindrical support pile foundation is deeper than the depth of an annular open caisson block by more than 1.5 times, the cylindrical support pile foundation and the bearing capacity required by an arc-shaped inner template can be determined according to the soil texture condition, the embedded depth of the cylindrical support pile foundation is not less than 100cm, and then selecting the shape of a square lattice column and carrying out welding construction on the square lattice column;

s2: then, mounting a circular connecting block on the square lattice column, hanging telescopic riveting components around the circular connecting block, determining the number of the telescopic riveting components according to the diameter of the annular open caisson block and the blocking condition of the inner arc-shaped inner template of the cylindrical support pile foundation, and mounting two or more than two riveting components on each arc-shaped inner template according to the requirement;

s3: when the annular open caisson block is subjected to settlement construction, if the inner formwork of the annular open caisson block is required to be supported, firstly, the riveting components are stretched in place, working platforms are erected at the end parts of the two riveting components, personnel stand on the platforms and are provided with cranes to connect the arc-shaped inner formwork with the corresponding two telescopic riveting components, and can also fix the arc-shaped inner formwork by using screws as required, the open caisson arc-shaped inner formwork is adjusted by using a steel wire rope and a clamping cable, then a square lattice column is placed on a cylindrical supporting pile foundation by using a crane, then steel bars are bound or the processed segmental steel bars are hoisted, then an outer formwork and a support are installed, concrete is poured after the inner formwork and the outer formwork are corrected, and the concrete is solidified for a certain time;

s4: when the support is needed, a hydraulic cylinder is directly started, an output shaft of the hydraulic cylinder drives a first square moving block to move, the first square moving block drives a first hinge block to move, the first hinge block is matched with a second hinge block, a riveting component is extended to drive an arc-shaped inner template to move, when the arc-shaped inner template is contacted with the inner wall of the annular open caisson block, the hydraulic cylinder is stopped to be started, if the height of a circular connecting block is needed to be adjusted, a first threaded rod is directly rotated at the beginning, and under the action of the first threaded rod, the circular connecting block is driven to move upwards;

s5: when the square moving block II needs to be disassembled, the threaded rod II is directly rotated, the trapezoidal clamping block is driven to move by the threaded rod II under the action of the threads, when the trapezoidal clamping block is separated from the trapezoidal clamping groove, the square moving block II can be disassembled from the square fixing block, the square fixing block can be installed through reverse operation, after the square moving block II is supported, the driving motor is directly started, the output shaft of the driving motor drives the threaded rod III to rotate, under the action of the threads, the threaded rod III drives the circular moving plate to move upwards, then the steel wire rope and the clamping rope are tensioned, a triangle is formed among the steel wire rope, the square lattice column and the riveting component, certain stability is achieved among the supports, and the arc inner template of the sinking well is adjusted through the steel wire rope and the clamping rope;

s6: when the arc-shaped inner formwork is required to be dismantled, the outer formwork is normally dismantled, when the arc-shaped inner formwork is dismantled, workers stand on a working platform and cooperate with a crane to dismantle the arc-shaped inner formwork, after dismantling, personnel withdraw, the riveting component is withdrawn, soil body excavation and annular open caisson block sinking construction in the annular open caisson block are carried out, a cylindrical supporting pile foundation in the middle of the annular open caisson block cannot be damaged in excavation, the above procedures are circulated until the open caisson sinks in place, the cylindrical supporting pile foundation in the middle is chiseled off after the annular open caisson block is sealed, then the open caisson bottom layer is poured, and open caisson construction is completed.

Compared with the prior art, the open caisson construction formwork and the construction method thereof provided by the invention have the following beneficial effects:

1. by arranging the supporting mechanism, the supporting mechanism can be used for carrying out effective construction simply and effectively during sedimentation construction, and manpower and resources are saved by adopting a supporting mode in the open caisson;

2. by arranging the telescopic mechanism, the arc-shaped inner template can be simply and effectively mounted and dismounted, and is convenient for constructors to adjust as required;

3. according to the invention, by arranging the positioning mechanism, the square lattice column can be simply and effectively stably placed on the cylindrical supporting pile foundation by the positioning mechanism, open caisson construction is carried out by adopting a synchronous sinking mode, and the working efficiency is improved.

Drawings

To facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic front sectional view illustrating a caisson construction formwork and a construction method thereof according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a partial top view of the present invention;

FIG. 3 is an enlarged schematic view of portion A of FIG. 1;

FIG. 4 is an enlarged schematic view of portion B of FIG. 1;

FIG. 5 is an enlarged schematic view of a portion C of FIG. 1;

FIG. 6 is an enlarged view of portion D of FIG. 4;

FIG. 7 is an assembly view of the concave block, the lateral travel bar, the arcuate clamp plate and the first spring of the present invention;

FIG. 8 is an assembly view of a circular connecting block and a cross-shaped fixture block in the present invention;

FIG. 9 is an enlarged schematic view of section E in FIG. 1;

FIG. 10 is a schematic top view of the circular moving plate of the present invention;

fig. 11 is a schematic structural view of a square lattice column according to the present invention.

In the figure: 1. a ring-shaped open caisson block; 2. cylindrical supporting pile foundation; 3. a vertical type connecting column; 4. an annular outer ring; 5. a square lattice column; 501. a vertical angle iron; 502. transverse steel saving; 503. oblique section steel; 6. an arc-shaped inner template; 7. a circular connecting block; 8. a cross-shaped fixture block; 9. a hydraulic cylinder; 10. a first square moving block; 11. a first hinge block; 12. a second hinge block; 13. a hinged lever; 14. a first threaded rod; 15. a square fixing block; 16. a second square moving block; 17. a concave block; 18. a transverse travel bar; 19. an arc-shaped splint; 20. a first spring; 21. a vertical positioning rod; 22. a second square mounting groove; 23. a second threaded rod; 24. a trapezoidal fixture block; 25. a third hinge block; 26. a drive motor; 27. a third threaded rod; 28. a wire rope; 29. clamping a cable; 30. a circular moving plate; 31. and (6) a square mounting plate.

Detailed Description

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, and fig. 11 in combination, wherein fig. 1 is a schematic front cross-sectional structural view of a caisson construction formwork and a construction method thereof according to a preferred embodiment of the present invention; FIG. 2 is a schematic view of a partial top view of the present invention; FIG. 3 is an enlarged schematic view of portion A of FIG. 1; FIG. 4 is an enlarged schematic view of portion B of FIG. 1; FIG. 5 is an enlarged schematic view of the portion C in FIG. 1; FIG. 6 is an enlarged view of the portion D in FIG. 4; FIG. 7 is an assembly view of the concave block, the lateral travel bar, the arcuate clamp plate and the first spring of the present invention; FIG. 8 is an assembly view of a circular connecting block and a cross-shaped fixture block in the present invention; FIG. 9 is an enlarged schematic view of section E of FIG. 1; FIG. 10 is a schematic top view of the circular moving plate of the present invention; fig. 11 is a schematic structural view of a square lattice column according to the present invention. The open caisson construction template and the construction method thereof comprise a ring-shaped open caisson block 1 arranged in a soil layer, wherein a cylindrical supporting pile foundation 2 is arranged in the ring-shaped open caisson block 1, a plurality of vertical connecting columns 3 are arranged on the outer side of the ring-shaped open caisson block 1, the vertical connecting columns 3 are distributed in a ring array, the vertical connecting columns 3 are fixedly sleeved with a same ring-shaped outer ring 4, the ring-shaped outer ring 4 is matched with the ring-shaped open caisson block 1, and a supporting mechanism, a telescopic mechanism and a positioning mechanism are arranged in the ring-shaped open caisson block 1;

the supporting mechanism comprises a square lattice column 5, the square lattice column 5 comprises four vertical angle steels 501, a plurality of transverse section steels 502 and a plurality of inclined section steels 503, the square lattice column 5 is formed by assembling the four vertical angle steels 501, the plurality of transverse section steels 502 and the plurality of inclined section steels 503, the square lattice column 5 is arranged in an annular open caisson block 1, eight arc-shaped inner formworks 6 are arranged in the annular open caisson block 1, the eight arc-shaped inner formworks 6 are distributed in an annular array manner, an annular outer formwork is arranged outside the annular open caisson block 1 and matched with the arc-shaped inner formworks 6, a plurality of triangular supporting frames are arranged on the annular outer formwork, the arc-shaped inner formworks 6 are in contact with the inner wall of the annular open caisson block 1, a circular connecting block 7 is sleeved on the square lattice column 5 in a sliding manner, eight cross-shaped clamping blocks 8 are arranged on the circular connecting block 7 in a sliding manner, a first square mounting groove is formed in one side, away from the circular connecting block 7, of the cross-shaped fixture block 8, a hydraulic cylinder 9 is fixedly mounted on the inner wall of the bottom of the first square mounting groove, a first square moving block 10 is fixedly mounted on an output shaft of the hydraulic cylinder 9, one side of the first square moving block 10 extends out of the corresponding first square mounting groove and is fixedly provided with a first hinge block 11, a second hinge block 12 is fixedly mounted on one side of the cross-shaped fixture block 8 and is located below the corresponding first hinge block 11, riveting assemblies are hinged to the first hinge block 11 and the second hinge block 12, the two riveting assemblies are matched with each other, each riveting assembly comprises a plurality of hinge rods 13, the corresponding two hinge rods 13 are mounted in a crossed manner, and a first threaded rod 14 is rotatably mounted on the circular connecting block 7;

as shown in fig. 1 and 4, the telescopic mechanism includes eight square fixed blocks 15, the eight square fixed blocks 15 are respectively and fixedly mounted on eight arc-shaped inner formworks 6, a square moving block two 16 is arranged on each square fixed block 15, two hinge blocks three 25 are fixedly mounted on one side of each square moving block two 16 away from the corresponding square fixed block 15, the two hinge blocks three 25 are respectively hinged to the corresponding two hinge rods 13, a square mounting groove two 22 is formed in one side of each square moving block two 16 close to the square fixed block 15, the square mounting groove two 22 is slidably connected with the corresponding square fixed block 15, a threaded rod two 23 is rotatably mounted in the square mounting groove two 22, the bottom end of the threaded rod two 23 extends out of the square mounting groove two 22, a trapezoidal clamping block 24 is rotatably mounted at the top end of the threaded rod two 23, and a trapezoidal clamping groove is formed in the bottom of the square fixed block 15, the trapezoidal clamping grooves are matched with the corresponding trapezoidal clamping blocks 24.

As shown in fig. 5 and 7, the positioning mechanism includes a concave block 17, the concave block 17 is disposed on the cylindrical supporting pile foundation 2, the top of the concave block 17 is fixedly connected with the square lattice column 5, three round through connection holes one are disposed on the concave block 17, a transverse moving rod 18 is slidably mounted in the round through connection holes one, both ends of the transverse moving rod 18 extend out of the round through connection holes one, one end of the transverse moving rod 18 close to the cylindrical supporting pile foundation 2 is fixedly mounted with an arc-shaped clamping plate 19, a first spring 20 is slidably mounted on the transverse moving rod 18, one end of the first spring 20 is fixedly connected with the arc-shaped clamping plate 19, the other end of the first spring 20 is fixedly connected with one side inner wall of the concave block 17, a first limit chute is disposed on the top inner wall and the bottom inner wall of the round through connection holes one, a vertical positioning rod 21 is slidably mounted in the first limit chute, first ball has all been nested to the one end that two perpendicular type locating levers 21 that correspond are close to each other, circular clamping groove has all been seted up to the top and the bottom of transverse movement pole 18, circular clamping groove and the first ball looks adaptation that corresponds, equal fixed mounting has the second spring on the one side inner wall that two spacing spout one phase kept away from each other, the one end that two second springs are close to each other respectively with two perpendicular type locating levers 21 fixed connection.

As shown in fig. 9 and 10, be equipped with square mounting panel 31 on the square lattice column 5, the top fixed mounting of square mounting panel 31 has driving motor 26, fixed mounting has three 27 threaded rods on driving motor 26's the output shaft, threaded sleeve is equipped with circular movable plate 30 on three 27 threaded rods, be equipped with eight wire rope 28 on the circular movable plate 30, the one end that circular movable plate 30 was kept away from to wire rope 28 is connected with the card cable 29, be equipped with first ring on the card cable 29, first ring fixed mounting is on the square fixed block 15 that corresponds.

As shown in fig. 2 and 3, a first bar-shaped block is installed on the first 14 threaded rod in a threaded manner, one side of the first bar-shaped block is fixedly connected with a corresponding vertical angle steel 501, a first threaded hole is formed in the vertical angle steel 501, the first threaded hole is in threaded connection with the first 14 threaded rod, the same first fixing rod is fixedly installed on the inner wall of the top of the first square installation groove and the inner wall of the bottom of the first square installation groove, the first 10 sliding blocks are sleeved on the corresponding first fixing rods in a sliding manner, a cross-shaped buckling groove is formed in the top of the circular connecting block 7, an opening is formed in the inner wall of one side of the cross-shaped buckling groove, and the cross-shaped buckling groove is in sliding connection with a corresponding cross-shaped clamping block 8.

As shown in fig. 3, spacing spout two has been seted up on one side inner wall of square mounting groove two 22, slidable mounting has the second slide bar in the spacing spout two, 24 fixed connection of trapezoidal fixture block of second slide bar and corresponding, the second screw hole has been seted up on the bottom inner wall of square mounting groove two, second screw hole and two 23 threaded connection of threaded rod, the sliding sleeve is equipped with the third spring on threaded rod two 23, the top and the trapezoidal fixture block 24 fixed connection of third spring, the bottom of third spring and the bottom inner wall fixed connection of square mounting groove two, square through hole has been seted up at the top of circular connecting block 7, square through hole and 5 sliding connection of square lattice column.

s1: firstly, constructing a cylindrical support pile foundation 2 at the center of an open caisson to be constructed, wherein the diameter of the cylindrical support pile foundation 2 can be 100cm, the length of the cylindrical support pile foundation 2 is deeper than the depth of an annular open caisson block 1 by more than 1.5 times, the cylindrical support pile foundation 2 and the bearing capacity required by an arc-shaped inner template 6 can be determined according to the soil condition, the embedded depth of the cylindrical support pile foundation 2 is not less than 100cm, and then selecting the shape of a square lattice column 5 and carrying out welding construction on the square lattice column 5;

s2: then, mounting a circular connecting block 7 on the square lattice column 5, hanging telescopic riveting components around the circular connecting block 7, determining the number of the telescopic riveting components according to the diameter of the annular open caisson block 1 and the blocking condition of the inner arc-shaped inner template 6 of the cylindrical support pile foundation 2, and mounting two or more riveting components on each arc-shaped inner template 6 according to requirements;

s3: when the annular open caisson block 1 is subjected to settlement construction, if the inner formwork of the annular open caisson block 1 is required to be supported, firstly, the riveting components are stretched in place, working platforms are erected at the end parts of the two riveting components, personnel stand on the platforms and are provided with cranes to connect the arc-shaped inner formwork 6 with the corresponding two telescopic riveting components, or the personnel can fix the arc-shaped inner formwork 6 of the open caisson by using screws according to requirements, the open caisson arc-shaped inner formwork 6 is adjusted by using a steel wire rope 28 and a clamping cable 29, then the square lattice column 5 is placed on the cylindrical supporting pile foundation 2 by using a crane, then reinforcing steel bars are bound or processed segment reinforcing steel bars are hoisted, then an outer formwork and a support thereof are installed, concrete pouring is carried out after the inner formwork and the outer formwork are corrected, and after a certain time, the inner formwork and the outer formwork are solidified;

s4: when the support is needed, the hydraulic cylinder 9 is directly started, an output shaft of the hydraulic cylinder 9 drives a first square moving block 10 to move, the first square moving block 10 drives a first hinge block 11 to move, the rivet component is extended to drive the arc-shaped inner template 6 to move under the mutual cooperation of the first square moving block and a second hinge block 12, when the arc-shaped inner template 6 is in contact with the inner wall of the annular open caisson block 1, the hydraulic cylinder 9 is stopped to be started, when the height of the circular connecting block 7 needs to be adjusted, a first threaded rod 14 is directly rotated at the beginning, and under the action of the threads, the first threaded rod 14 drives the circular connecting block 7 to move upwards;

s5: when the second square moving block 16 needs to be disassembled, the second threaded rod 23 is directly rotated, the second threaded rod 23 drives the second trapezoidal clamping block 24 to move under the action of the threads, when the second trapezoidal clamping block 24 is separated from the second trapezoidal clamping groove, the second square moving block 16 can be disassembled from the second square fixing block 15, the second square moving block can be installed through reverse operation, after supporting, the driving motor 26 is directly started, the third threaded rod 27 is driven by an output shaft of the driving motor 26 to rotate, the third threaded rod 27 drives the circular moving plate 30 to move upwards under the action of the threads, then the steel wire rope 28 and the clamping rope 29 are tensioned, a triangle is formed among the steel wire rope 28, the square lattice column 5 and the riveting component, certain stability is achieved among the supports, and the sinking arc inner template 6 is adjusted through the steel wire rope 28 and the clamping rope 29;

s6: when the arc-shaped inner formwork 6 needs to be dismantled, the outer formwork is normally dismantled, when the arc-shaped inner formwork is dismantled, workers stand on a working platform and cooperate with a crane to dismantle the arc-shaped inner formwork 6, after dismantling, personnel withdraw the workers, the riveting assembly is withdrawn, soil excavation in the annular open caisson block 1 and sinking construction of the annular open caisson block 1 are carried out, the cylindrical supporting pile foundation 2 in the middle of the annular open caisson block 1 cannot be damaged in the excavation, the above processes are circulated until the open caisson sinks in place, the cylindrical supporting pile foundation 2 in the middle is chiseled after the annular open caisson block 1 is sealed, then the open caisson bottom layer is poured, and open caisson construction is completed.

It should be noted that, the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the technology of the design principle, the settings of the power mechanism, the power supply system, the control system, and the like of the device are not completely described, but on the premise that the skilled person understands the principle of the present invention, the details of the power mechanism, the power supply system, and the control system can be clearly known, the control mode of the application document is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the skilled person in the art;

the standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, and the structure and the principle of the parts are known by technical manuals or conventional experimental methods for technicians in the field.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made herein without departing from the spirit and scope of the invention, which is defined in the appended claims and their equivalents as expressed in the claims which follow, and are intended to be covered by the claims.

Claims

1. The open caisson construction template is characterized by comprising an annular open caisson block arranged in a soil layer, wherein a cylindrical supporting pile foundation is arranged in the annular open caisson block, a plurality of vertical connecting columns are arranged on the outer side of the annular open caisson block and distributed in an annular array manner, the vertical connecting columns are fixedly sleeved with a same annular outer ring, the annular outer ring is matched with the annular open caisson block, and a supporting mechanism, a telescopic mechanism and a positioning mechanism are arranged in the annular open caisson block;

telescopic machanism is including eight square fixed blocks, and eight square fixed blocks are fixed mounting respectively on eight arc inner formworks, be equipped with square movable block two on the square fixed block, square movable block two keeps away from one side fixed mounting who corresponds square fixed block has two articulated pieces three, and two articulated pieces are articulated mutually with two hinge bars that correspond respectively, square movable block two has been seted up near one side of square fixed block square mounting groove two, square mounting groove two and the square fixed block sliding connection who corresponds, threaded rod two is installed to two internal rotations of square mounting groove, the bottom of threaded rod two extends to square mounting groove two outside, the top of threaded rod two is rotated and is installed trapezoidal fixture block, trapezoidal draw-in groove has been seted up to the bottom of square fixed block, trapezoidal draw-in groove and the trapezoidal fixture block looks adaptation that corresponds.

2. The open caisson construction formwork of claim 1, wherein the positioning mechanism comprises a concave block, the concave block is arranged on a cylindrical supporting pile foundation, the top of the concave block is fixedly connected with a square lattice column, the concave block is provided with a first three circular through connecting holes, the first circular through connecting holes are internally provided with a transverse moving rod in a sliding manner, two ends of the transverse moving rod extend out of the first circular through connecting holes, one end of the transverse moving rod close to the cylindrical supporting pile foundation is fixedly provided with an arc-shaped clamping plate, the transverse moving rod is slidably sleeved with a first spring, one end of the first spring is fixedly connected with the arc-shaped clamping plate, the other end of the first spring is fixedly connected with one side inner wall of the concave block, the top inner wall and the bottom inner wall of the first circular through connecting holes are respectively provided with a first limiting sliding groove, the first limiting sliding groove is internally provided with a vertical positioning rod, first ball has all been nested to the one end that two perpendicular type locating levers that correspond are close to each other, circular clamping groove has all been seted up to transverse shifting rod's top and bottom, circular clamping groove and the first ball looks adaptation that corresponds, equal fixed mounting has the second spring on the one side inner wall that two spacing spout one phase kept away from each other, the one end that two second springs are close to each other respectively with two perpendicular type locating lever fixed connection.

3. The open caisson construction template of claim 2, wherein a square mounting plate is arranged on the square lattice column, a driving motor is fixedly arranged at the top of the square mounting plate, a third threaded rod is fixedly arranged on an output shaft of the driving motor, a circular moving plate is sleeved on the third threaded rod, eight steel wire ropes are arranged on the circular moving plate, a clamping rope is connected to one end, far away from the circular moving plate, of each steel wire rope, a first circular ring is arranged on each clamping rope, and the first circular rings are fixedly arranged on the corresponding square fixing blocks.

4. The open caisson construction formwork of claim 3, wherein a first bar-shaped block is installed on the first threaded rod in a threaded manner, one side of the first bar-shaped block is fixedly connected with a corresponding vertical angle steel, a first threaded hole is formed in the vertical angle steel, the first threaded hole is in threaded connection with the first threaded rod, the same first fixing rod is fixedly installed on the inner wall of the top and the inner wall of the bottom of the first square installation groove, the first square moving block is slidably sleeved on the corresponding first fixing rod, a cross-shaped buckling groove is formed in the top of the circular connecting block, an opening is formed in the inner wall of one side of the cross-shaped buckling groove, and the cross-shaped buckling groove is slidably connected with a corresponding cross-shaped clamping block.

5. The open caisson construction formwork of claim 4, wherein a second limiting sliding groove is formed in an inner wall of one side of the second square mounting groove, a second sliding rod is slidably mounted in the second limiting sliding groove, the second sliding rod is fixedly connected with a corresponding trapezoid clamping block, a second threaded hole is formed in an inner wall of the bottom of the second square mounting groove, the second threaded hole is in threaded connection with a second threaded rod, a third spring is sleeved on the second threaded rod in a sliding mode, the top end of the third spring is fixedly connected with the trapezoid clamping block, the bottom end of the third spring is fixedly connected with the inner wall of the bottom of the second square mounting groove, a square through hole is formed in the top of the circular connecting block, and the square through hole is in sliding connection with the square lattice column.

6. A construction method of a caisson construction formwork, comprising the caisson construction formwork of claim 5 and the steps of:

s1: firstly, constructing a cylindrical support pile foundation at the center of an open caisson to be constructed, wherein the diameter of the cylindrical support pile foundation can be 100cm, the length of the cylindrical support pile foundation is more than 1.5 times deeper than the depth of an annular open caisson block, the cylindrical support pile foundation can be determined according to the soil texture condition and the bearing capacity required by an arc-shaped inner template, the embedded depth of the cylindrical support pile foundation is not less than 100cm, and then selecting the shape of a square lattice column and carrying out welding construction on the square lattice column;