CN210827478U - Deep foundation pit underground structure reverse construction method steel pipe column positioning device - Google Patents
Deep foundation pit underground structure reverse construction method steel pipe column positioning device Download PDFInfo
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- CN210827478U CN210827478U CN201921537047.6U CN201921537047U CN210827478U CN 210827478 U CN210827478 U CN 210827478U CN 201921537047 U CN201921537047 U CN 201921537047U CN 210827478 U CN210827478 U CN 210827478U
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Abstract
The utility model belongs to the technical field of the location construction technique and specifically relates to a deep foundation pit underground structure reverse construction method steel pipe column positioner, which comprises a base, a support frame movably arranged on the base, and a positioning component and an operation platform which are arranged on the support frame, wherein the operation platform is arranged above the positioning component, the positioning component is movably arranged on the support frame, a first operation hole matched with the diameter of a pile hole is arranged on the base, a second operation hole for the steel stand column to pass through is arranged on the operation platform, the positioning component comprises a positioning platform, a third operation hole arranged on the positioning platform, and a first cover plate and a second cover plate hinged with the positioning platform, the first cover plate and the second cover plate are respectively hinged at two opposite sides of the third operation hole, one side of the first cover plate close to the second cover plate is provided with a first gap, one side of the second cover plate close to the first cover plate is provided with a second gap, the steel upright post can be accurately positioned, and the requirement on positioning in the deep foundation pit reverse construction method is met.
Description
Technical Field
The utility model relates to a location construction technical field, concretely relates to deep basal pit underground structure reverse construction method steel-pipe column positioner.
Background
In the deep foundation pit basement structure reverse construction method, the structural columns of the common building need to be constructed before foundation pit excavation. When the structural column adopts a steel pipe column form, the integral structure is that a cast-in-place pile is arranged at the bottom of a foundation pit, a steel pipe upright is arranged above the bottom of the foundation pit, and the steel pipe upright is inserted into the cast-in-place pile at the bottom for about 3 m. In order to ensure the safety of the basement structure, the requirements of plane positioning and vertical allowable deviation of the steel pipe column in the reverse construction are extremely high, wherein the plane positioning error is not more than +/-10 mm, and the verticality allowable deviation is not more than L/300.
The construction method of the steel pipe column is comprehensively selected generally according to factors such as site conditions, pile diameter, pile length and the like, and the conventional construction method mainly comprises a column and reinforcement cage integral hoisting positioning method and a full-rotation full-casing drilling machine positioning method, wherein the column and reinforcement cage integral hoisting positioning method is usually used for temporary support construction of a foundation pit, if the column is used for the column construction of a permanent reverse construction method, the requirements of the steel pipe column serving as a structural column on the plane position precision and the verticality are difficult to meet, while the full-rotation full-casing drilling machine positioning method mainly aims at the steel column with a larger pipe diameter (D is more than 1.0m), the equipment has higher requirements on the site and needs to harden the site in advance, and the factors make the method have unobvious comprehensive economic benefits for positioning construction of the steel column with the pipe diameter not more than 1.0 m.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art not enough, the utility model provides a deep basal pit underground structure reverse construction method steel-pipe column positioner is applicable to the pipe diameter and is not more than 1.0 m's steel stand's location, and location easy operation can carry out accurate location to the steel stand, satisfies the requirement to the location in the deep basal pit reverse construction method.
The utility model provides a technical scheme that its technical problem adopted is:
the steel pipe column positioning device for the deep foundation pit underground structure reverse construction method comprises a base, a support frame movably arranged on the base, a positioning assembly and an operation platform, wherein the positioning assembly and the operation platform are arranged on the support frame, the operation platform is arranged above the positioning assembly, the positioning assembly is movably arranged on the support frame, a first operation hole matched with the diameter of a pile hole is formed in the base, a second operation hole for the steel stand column to pass through is formed in the operation platform, the positioning assembly comprises a positioning platform, a third operation hole formed in the positioning platform, a first cover plate and a second cover plate, the first cover plate and the second cover plate are hinged to two opposite side edges of the third operation hole respectively, a first notch is formed in one side, close to the second cover plate, of the first cover plate, a second notch is formed in one side, close to the first cover plate, when the first cover plate and the second cover plate are covered with the third operation hole, the first notch and the second notch form a positioning hole matched with the diameter of the steel pipe upright post.
The first cover plate and the second cover plate are detachably connected with the positioning platform through hinges.
The upper surfaces of the first cover plate and the second cover plate are provided with hand-pulled handles.
The support frame is provided with a ladder stand, and the ladder stand is arranged from the bottom of the support frame to the operation platform.
The operation platform is provided with a guardrail, the guardrail is arranged along the circumferential direction of the edge of the operation platform, and one side of the guardrail close to the ladder stand is provided with a channel for an operator to go up and down the operation platform.
The support frame comprises a rectangular base at the bottom, four stand columns with the lower ends respectively fixedly arranged at four right angles of the rectangular base, and two T-shaped supports respectively connected with two opposite side edges of the rectangular base, the upper ends of the four stand columns are connected with an operation platform, and the positioning platform is arranged on the two supports.
The support frame further comprises an oblique beam, two ends of the oblique beam are respectively connected with the operation platform and the stand column, and the oblique beam, the operation platform and the stand column enclose a triangle.
Wherein the height of the guardrail is more than 1.2 m.
The utility model has the advantages that:
adopt the utility model discloses a device is applicable to the location that the pipe diameter is not more than 1.0 m's steel stand, and location easy operation can carry out accurate location to the steel stand, satisfies the requirement to the location in the deep basal pit reverse construction method.
Adopt the utility model discloses a when the device fixes a position the steel stand, through opening first apron and second apron, then adopt the crane to hang the steel stand and put to the support frame top, and transfer the steel stand, make the lower extreme of steel stand pass the second operation hole in proper order, enter in the downthehole steel reinforcement cage of stake behind third operation hole and the first operation hole, make the steel stand transfer to the design elevation, close first apron and second apron at last, because first breach and second breach constitute and steel pipe stand diameter assorted locating hole, therefore, first apron and second apron are close to the lateral wall butt steel stand of steel stand this moment, make the difficult slope that takes place of steel stand, reach the mesh of fixing a position the steel stand.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of the base of the present invention.
Description of reference numerals: 1. a base; 11. a first working hole; 2. a support frame; 21. a base; 22. a column; 23. a support; 24. a cross beam; 25. a reinforcing bar; 26. an oblique beam; 31. positioning the platform; 32. a third working hole; 33. a first cover plate; 331. a first notch; 34. a second cover plate; 341. a second notch; 4. an operation platform; 41. a second working hole; 5. a hinge; 6. a handle is pulled by hand; 7. climbing a ladder; 8. and (4) a guardrail.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The utility model discloses each technical feature in the creation can the interactive combination under the prerequisite that does not contradict conflict each other.
A steel pipe column positioning device for a deep foundation pit underground structure reverse construction method is shown in figure 1 and comprises a rectangular base 1, a support frame 2 movably arranged on the base 1, a positioning assembly arranged on the support frame 2 and a rectangular operation platform 4. The operation platform 4 is arranged above the positioning component, and the positioning component is movably arranged on the support frame 2.
As shown in fig. 2, a first operation hole 11 matched with the diameter of the pile hole is formed in the base 1. Specifically, for convenience of machining, the first operation hole 11 is a square hole, and the side length of the first operation hole 11 is equal to or slightly larger than the diameter of the pile hole.
During specific work, an operator firstly arranges the ground around the pile hole to be flat, then compacts the ground in the placing range of the base 1, finally adopts a crane to hoist the base 1 and hoist the base 1 to the position of the pile hole, enables the center point of the first working hole 11 of the base 1 to coincide with the circle center of the pile hole, completes the primary positioning of the base 1, and then hoists the reinforcement cage to the pile hole according to the designed elevation.
The supporting frame 2 comprises a rectangular base 21 at the bottom, four upright posts 22 with lower ends respectively fixedly arranged at four right angles of the rectangular base 21, and two T-shaped supports 23 respectively connected with two opposite sides of the rectangular base 21, the upper ends of the four upright posts 22 are connected with the operation platform 4, and the positioning assembly is arranged on the two supports 23.
Specifically, the length and width of base 21 equals the length and width of base 1, and support 23 includes crossbeam 24 and the vertical stiffener 25 that crossbeam 24 and base 21 are connected respectively at both ends with two adjacent stand 22 fixed connection respectively, the locating component activity is located on crossbeam 24.
During specific work, the support frame 2 is hung on the base 1 by using a crane, the periphery of the base 21 of the support frame 2 is aligned with the periphery of the base 1, then the levelness of the support frame 2 is measured by using a level gauge, and the position of the support frame 2 is adjusted to enable the support frame 2 to be in a horizontal state. During adjustment, sand or concrete can be filled in the corresponding position between the base 21 of the support frame 2 and the base 1 according to the measuring result of the level meter, the lower position of the support frame 2 is lifted up according to the requirement to make the support frame 2 finally be in a horizontal state, and the subsequent positioning accuracy of the steel upright column 22 is favorably improved. The reinforcing rod 25 is beneficial to improving the strength of the whole structure, so that the positioning assembly is not easy to vibrate when the steel upright column 22 is positioned, and the positioning accuracy is improved.
In order to further improve the overall strength of the support frame 2 and the stability of the operation platform 4, the support frame 2 further comprises an oblique beam 26 with two ends respectively connected with the operation platform 4 and the upright post 22, the oblique beam 26, the operation platform 4 and the upright post 22 enclose a triangle, the triangle structure is more stable, and the stability of the operation platform 4 is more favorably improved.
Wherein, offer the second operation hole 41 that supplies steel stand 22 to pass on the operation platform 4, it is concrete, for convenient processing, second operation hole 41 is square hole, just the length of side of second operation hole 41 is greater than the diameter of steel stand 22, makes things convenient for the staff to fix a position and observe steel stand 22.
The positioning assembly comprises a positioning platform 31 movably arranged on the support 23, a third operation hole 32 arranged on the positioning platform 31, and a first cover plate 33 and a second cover plate 34 hinged to the positioning platform 31, wherein the first cover plate 33 and the second cover plate 34 are respectively hinged to two opposite side edges of the third operation hole 32, a first notch 331 is formed in one side, close to the second cover plate 34, of the first cover plate 33, a second notch 341 is formed in one side, close to the first cover plate 33, of the second cover plate 34, and when the third operation hole 32 is covered by the first cover plate 33 and the second cover plate 34, the first notch 331 and the second notch 341 form a positioning hole matched with the diameter of the steel pipe upright column 22.
During specific work, a worker firstly positions the steel upright column 22, measures the central point of the steel upright column 22 through a total station on the work platform 4, and then adjusts the position of the positioning platform 31 according to the measurement result, so that the central point of the third work hole 32 on the positioning platform 31 coincides with the central point of the steel upright column 22 and is positioned on the same vertical line, and the positioning work of the steel upright column 22 is completed. Then, the first cover plate 33 and the second cover plate 34 are opened, then the steel upright column 22 is hoisted to the upper side of the support frame 2 by adopting a crane, the steel upright column 22 is lowered, the lower end of the steel upright column 22 sequentially penetrates through the second operation hole 41, the third operation hole 32 and the first operation hole 11 and then enters the steel reinforcement cage in the pile hole, the steel upright column 22 is lowered to the designed elevation, and finally the first cover plate 33 and the second cover plate 34 are closed. After the steel upright column 22 is accurately positioned, in order to ensure that the positioning assembly and the support frame 2 do not shift during subsequent operation, the positioning platform 31 and the cross beam 24 are welded and fixed, meanwhile, the base 21 and the base 1 of the support frame 2 are welded and fixed, and in order to facilitate subsequent separation of the positioning platform 31, the support frame 2, the base 21 and the base 1, a multipoint fixing welding method is adopted in a welding mode, so that the welding area is small, the disassembly is convenient, the device can be used for multiple times as required, and the cost is saved.
Specifically, the first cover plate 33 and the second cover plate 34 are detachably connected to the positioning platform 31 through hinges 5. Hinge 5 connected mode makes first apron 33 and second apron 34 can dismantle with location platform 31 respectively and is connected, the staff can have the first apron 33 of the first breach 331 of different diameter sizes according to the diameter design of steel stand 22, and with the symmetrical second apron 34 of first apron 33, when fixing a position the steel stand 22 of different diameters, accessible hinge 5 changes the first apron 33 and the second apron 34 of different specifications, make the device can be applicable to and fix a position the steel stand 22 of multiple diameter, application scope is wider.
Further, in order to facilitate the opening or replacement of the first cover plate 33 and the second cover plate 34 by the worker, the upper surfaces of the first cover plate 33 and the second cover plate 34 are provided with hand-pulled handles 6.
Furthermore, in order to facilitate the worker to get on and off the work platform 4, the support frame 2 is provided with a ladder stand 7, and the ladder stand 7 is arranged from the bottom of the support frame 2 to the work platform 4.
In order to improve the device's security, protection staff's safety effectively avoids the staff to fall from work platform 4, be equipped with guardrail 8 on work platform 4, guardrail 8 is followed work platform 4 sets up along circumference, one side that guardrail 8 is close to cat ladder 7 is equipped with the passageway that supplies work personnel to go up work platform 4 from top to bottom.
Specifically, the height of the guardrail 8 is larger than 1.2m, so that the safety of the device is improved.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (8)
1. Deep basal pit underground structure reverse construction method steel-pipe column positioner, its characterized in that: comprises a base, a support frame movably arranged on the base, a positioning component and an operation platform which are arranged on the support frame, the operation platform is arranged above the positioning component, the positioning component is movably arranged on the supporting frame, the base is provided with a first operation hole matched with the diameter of the pile hole, the operation platform is provided with a second operation hole for the steel upright post to pass through, the positioning assembly comprises a positioning platform, a third operation hole arranged on the positioning platform, a first cover plate and a second cover plate which are hinged with the positioning platform, the first cover plate and the second cover plate are respectively hinged on two opposite side edges of the third operation hole, a first notch is arranged on one side of the first cover plate close to the second cover plate, a second notch is arranged on one side of the second cover plate close to the first cover plate, when the first cover plate and the second cover plate are covered with the third working hole, the first notch and the second notch form a positioning hole matched with the diameter of the steel pipe upright post.
2. The deep foundation pit underground structure reverse construction method steel pipe column positioning device of claim 1, characterized in that: the first cover plate and the second cover plate are detachably connected with the positioning platform through hinges.
3. The deep foundation pit underground structure reverse construction method steel pipe column positioning device of claim 1, characterized in that: the upper surfaces of the first cover plate and the second cover plate are both provided with a hand-pull handle.
4. The deep foundation pit underground structure reverse construction method steel pipe column positioning device of claim 1, characterized in that: the support frame is equipped with the cat ladder, the cat ladder sets up to work platform from the bottom of support frame.
5. The deep foundation pit underground structure reverse construction method steel pipe column positioning device of claim 4, characterized in that: the operation platform is provided with a guardrail, the guardrail is arranged along the circumferential direction of the edge of the operation platform, and one side of the guardrail close to the crawling ladder is provided with a channel for an operator to go up and down the operation platform.
6. The deep foundation pit underground structure reverse construction method steel pipe column positioning device of claim 1, characterized in that: the support frame comprises a rectangular base at the bottom, four stand columns with the lower ends respectively fixedly arranged at four right angles of the rectangular base, and two T-shaped supports respectively connected with two opposite side edges of the rectangular base, wherein the upper ends of the four stand columns are connected with an operation platform, and the positioning platform is arranged on the two supports.
7. The deep foundation pit underground structure reverse construction method steel pipe column positioning device of claim 6, characterized in that: the support frame also comprises an oblique beam, two ends of the oblique beam are respectively connected with the operation platform and the upright post, and the oblique beam, the operation platform and the upright post enclose a triangle.
8. The deep foundation pit underground structure reverse construction method steel pipe column positioning device of claim 5, characterized in that: the height of the guardrail is more than 1.2 m.
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| CN201921537047.6U CN210827478U (en) | 2019-09-12 | 2019-09-12 | Deep foundation pit underground structure reverse construction method steel pipe column positioning device |
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| CN201921537047.6U CN210827478U (en) | 2019-09-12 | 2019-09-12 | Deep foundation pit underground structure reverse construction method steel pipe column positioning device |
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| CN210827478U true CN210827478U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485424A (en) * | 2019-09-12 | 2019-11-22 | 深圳市工勘岩土集团有限公司 | Deep basal pit underground structure contrary sequence method steel pipe column positioning device and positioning construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485424A (en) * | 2019-09-12 | 2019-11-22 | 深圳市工勘岩土集团有限公司 | Deep basal pit underground structure contrary sequence method steel pipe column positioning device and positioning construction method |
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