CN217811023U - Guide frame for positioning construction of foundation pit support structure upright post pile and lattice post - Google Patents
Guide frame for positioning construction of foundation pit support structure upright post pile and lattice post Download PDFInfo
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- CN217811023U CN217811023U CN202221460245.9U CN202221460245U CN217811023U CN 217811023 U CN217811023 U CN 217811023U CN 202221460245 U CN202221460245 U CN 202221460245U CN 217811023 U CN217811023 U CN 217811023U
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Abstract
The utility model discloses a leading truck that is used for foundation ditch envelope upright post stake and lattice column location to be under construction, this leading truck is equipped with horizontally top frame and horizontally bottom frame the central authorities of leading truck are equipped with the guiding hole around the guiding hole top frame with respectively be equipped with four along circumference equipartition, along the spacing bolt of radial extension on the bottom frame, every be connected with the nut that two intervals set up on the spacing bolt, the nut rigid coupling is on the leading truck. The utility model discloses using the principle of confirming a straight line two points, can making steel reinforcement cage and lattice column accuracy take one's place, be located the stake hole inboard through making spacing hole simultaneously, touch with stake hole pore wall when avoiding steel reinforcement cage to transfer, and then make stake hole pore wall avoid the disturbance, stake hole pore wall is stable when guaranteeing steel reinforcement cage to transfer, has solved stand stake steel reinforcement cage and has transferred the difficult problem of disturbance pore wall and steel reinforcement cage and lattice column location.
Description
Technical Field
The utility model relates to a foundation ditch enclosure construction technical field, especially a leading truck that is used for foundation ditch enclosure upright post stake and lattice column location construction.
Background
The upright post piles and the lattice posts are used as a part of an enclosure structure and are widely applied to underground engineering such as subway station foundation pits. With the vigorous development of the subway construction industry in China, the construction of the upright post piles and the lattice columns is more and more common, the construction conditions of the upright post piles and the lattice columns are more and more complicated, and in the construction process of the upright post pile reinforcement cage and the lattice columns, on one hand, the position accuracy of the reinforcement cage and the lattice columns connected with the reinforcement cage and the lattice columns are required to be ensured, the operation is convenient for operators to operate, once the position of the lattice columns is inaccurate in the construction process, the position of a support system is directly influenced, and the stress of the whole enclosure structure is influenced, so that the actual stress of the structure is greatly different from the design stress, and the safety risk is brought to the engineering; on the other hand, the shaking amplitude is large in the process of lowering the steel reinforcement cage, the hole wall is disturbed, hole collapse is possibly caused, and unnecessary trouble is brought to engineering. How to ensure that the steel reinforcement cage and the lattice column connected with the steel reinforcement cage are accurately positioned in the construction and the operation of an operator is convenient is a key node for lattice column construction. The existing conventional method has the defects of poor stability of the adopted guide structure, low positioning precision and troublesome installation and disassembly, and importantly, the stability of the hole wall when the reinforcement cage is lowered cannot be ensured, so that the economic benefit and the social benefit of the conventional method are not obvious. Meanwhile, the lattice column can be cut off after the construction of the station is finished, so that the positioning accuracy of the lattice column is not paid enough attention by general constructors, but the lattice column is a vertical stressed component of a horizontal support and is a very important part, so that the positioning accuracy of the lattice column is necessarily improved.
Disclosure of Invention
The utility model discloses a solve the technical problem that exists among the known art and provide a leading truck that is used for foundation ditch enclosure structure stand post stake and lattice column location construction, can not cause the disturbance to the pore wall when not only can guaranteeing that the steel reinforcement cage transfers, can also guarantee that the stand post stake is accurate rather than the lattice column location that is connected to the construction to it is simple and convenient to be under construction.
The utility model discloses a technical scheme who takes for solving the technical problem that exists among the well-known technique is: the utility model provides a leading truck that is used for foundation ditch envelope upright post stake and lattice column location to be under construction, this leading truck is equipped with horizontally top frame and horizontally bottom frame the central authorities of leading truck are equipped with the guiding hole around the guiding hole top frame with respectively be equipped with four along circumference equipartition, along the spacing bolt of radial extension on the bottom frame, every be connected with the nut of two intervals settings on the spacing bolt, the nut rigid coupling is on the leading truck.
The top frame and the bottom frame both adopt a structure shaped like a Chinese character 'jing', the guide hole is shaped like a Chinese character 'kou', and four limiting bolts are respectively and vertically arranged on four sides of the guide hole.
The main body of the guide frame is formed by welding double-spliced channel steel.
The utility model has the advantages and positive effects be: two spacing holes of adjustable size that utilize two sets of spacing bolts to form on the leading truck control stand stake steel reinforcement cage and lattice column and go into the stake hole down, use the principle that two points confirm a straight line, can make steel reinforcement cage and lattice column be accurate to take one's place, simultaneously through making spacing hole be located the stake downthehole side, touch with stake hole pore wall when avoiding steel reinforcement cage to transfer, and then make stake hole pore wall avoid the disturbance, stake hole pore wall is stable when guaranteeing that the steel reinforcement cage transfers, the difficult problem of disturbance pore wall and steel reinforcement cage and lattice column location has been solved to stand stake steel reinforcement cage transfer. Adopt simultaneously the utility model discloses the construction is simple and convenient, is convenient for improve construction quality, reduces construction cost for the construction progress.
Drawings
Fig. 1 is a schematic plan view of the present invention;
fig. 2 is a schematic elevation view of the utility model when the reinforcement cage is lowered;
FIG. 3 is a schematic view of the lattice column of the present invention in elevation when connected to the reinforcement cage;
fig. 4 is a schematic elevation view of the lattice column of the present invention when it is lowered.
In the figure: 1. a guide frame; 1-1, a top frame; 1-2, a bottom frame; 1-3, a guide hole; 1-4, a limit bolt; 1-5, a nut; 2. square wood; 3. a reinforcement cage; 4. a lattice column; 5. a guide post; 6. a long bolt; 7. 8, a flange.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments will be illustrated in detail with reference to the accompanying drawings:
referring to fig. 1 to 4, a guide frame for positioning construction of foundation pit support structure upright column piles and lattice columns is provided with a horizontal top frame 1-1 and a horizontal bottom frame 1-2, a guide hole 1-3 is provided in the center of the guide frame, four circumferentially uniformly distributed and radially extending limit bolts 1-4 are respectively provided around the guide hole 1-3, on the top frame 1-1 and the bottom frame 1-2, each limit bolt 1-4 is connected with two nuts 1-5 arranged at intervals, and the nuts 1-5 are fixedly connected to the guide frame.
In this embodiment, the top frame 1-1 and the bottom frame 1-2 are both of a cross-shaped structure, the guide holes 1-3 are in a square shape, and four limit bolts 1-4 are respectively vertically arranged on four sides of the guide holes 1-3, so that construction is facilitated. The main body of the guide frame is formed by welding double-spliced channel steel, the main manufacturing materials are channel steel and bolts, the channel steel and the bolts are common materials on site, the guide frame suitable for being manufactured automatically can be manufactured according to piles with different diameters, and the guide frame is convenient to manufacture. The method for positioning and constructing the foundation pit enclosure structure upright column piles and the lattice columns by applying the guide frame comprises the following steps:
1) Forming holes
Determining the hole forming center of the upright post pile on the ground, embedding the pile casing to determine the pile position, and then performing the hole forming operation of the pile hole.
Specifically, in this embodiment, the central point position of a column pile is firstly released on the ground by using a total station, then eight control piles are uniformly distributed circumferentially around the central point, then a casing is embedded, when the casing is embedded, the total station is used for monitoring that the intersection point of the central line of the casing and a'm' -shaped fastening pile of the control pile is on a vertical line so as to ensure that the central line of the casing and the central line of the column pile coincide, ensure that the pile position is accurate, and then perform pile hole forming operation.
2) Guide frame mounting
Referring to fig. 1 to 4, a guide frame 1 is installed around the pile hole, the guide frame 1 is horizontally supported by a square timber 2, and the horizontal supporting surface of the square timber 2 is higher than the top surface of the casing 3.
When the guide frame is installed, the total station is utilized to monitor that the center line of the guide hole and the intersection point of the 'meter' -shaped fastening pile of the control pile are on the same plumb line, so that the guide holes 1-3 are superposed with the center line of the pile hole, and the guide frame is accurately positioned.
3) Column pile reinforcement cage and lattice column manhole
3.1 Before the column pile cage 3 is lowered, the upper and lower sets of limit bolts 1-4 are adjusted so that the limit hole defined by them is located inside the pile hole, and a gap is left between the limit hole and the cage, which in this embodiment is 1.5cm. The clearance can be specifically determined according to the installation accuracy requirement.
3.2 Hoisting the reinforcement cage 3 by a crane, inserting the reinforcement cage 3 into the pile hole after passing through the limiting holes respectively defined by the upper and lower groups of limiting bolts until the height of the reinforcement cage 3 above the ground is equal to the connecting length between the reinforcement cage and the lattice column plus the set length, and supporting the reinforcement cage 3 by a penetrating bar, please refer to fig. 2. In this embodiment, the set length is 50cm. The height of the steel reinforcement cage 3 exposed out of the ground is larger than the connection length of the steel reinforcement cage and the lattice column, so that subsequent connection construction operation is facilitated.
The principle that two points are used for determining a straight line is utilized, the limiting hole formed by surrounding of the upper limiting bolt and the lower limiting bolt is utilized to control the installation precision of the steel reinforcement cage, the steel reinforcement cage can be accurately positioned, meanwhile, the limiting hole is located on the inner side of the pile hole, the steel reinforcement cage can be prevented from touching the wall of the pile hole when being placed, the wall of the pile hole is prevented from being disturbed, and the stability of the wall of the pile hole when the steel reinforcement cage is placed is guaranteed.
3.3 Hoisting the lattice column 4 and inserting the reinforcement cage 3 to the designed connection position to fix the reinforcement cage 3 and the lattice column 4 together, see fig. 3.
3.4 Continue lowering the reinforcement cage 3 to all of the openings, see figure 1.
3.5 The upper and lower groups of limit bolts 1-4 are continuously adjusted to ensure that the clearance between the upper and lower limit holes and the lattice column 4 which are surrounded by the upper and lower groups of limit bolts reaches the design value. In this embodiment, the design value is 3-5cm, which facilitates column position adjustment. The design value may be specifically determined according to the mounting accuracy requirement.
The principle is the same as that of step 3.2).
3.6 Lower the lattice column 4 to a predetermined height with the top of the lattice column exposed from the ground, and put the bar on the lattice column 4, see fig. 4. In the present embodiment, the set height is 1m.
3.7 Hoisting the guide post 5 and fixedly connecting the guide post 5 and the lattice post 4 together, wherein the length of the guide post 5 is greater than or equal to the distance from the designed top elevation of the lattice post 4 to the top of the guide frame, in the embodiment, the length of the guide post 5 is equal to the distance from the designed top elevation of the lattice post 4 to the top of the guide frame, and the material is saved. The guide post 5 and the lattice column 4 are fixedly connected together by oppositely pulling an upper flange and a lower flange through a long bolt 6, the upper flange 7 is connected to the outer side of the lower part of the guide post 5, and the lower flange 8 is connected to the outer side of the upper part of the lattice column 4. The connecting structure is convenient for the removal of the subsequent guide post 5 and convenient for construction.
3.8 Continue lowering the lattice column 4 to the design position.
4) Pouring upright post pile concrete
After the steel reinforcement cage 3 and the lattice column 4 are placed, the guide pillar 5 and the pile casing are connected together, then the concrete guide pipe is placed to a pile hole of the upright pile, and concrete is poured. When concrete is poured, the lattice column is fixedly connected to the pile casing, the position of the lattice column is not influenced by the construction such as concrete pouring, and the construction precision of the lattice column can be greatly improved.
In the embodiment, the guide post 5 and the casing are connected together by steel bars.
5) Demolish guide frame and guide pillar
After the concrete reaches the design strength, the connection between the guide pillar 5 and the lattice column 4 is released, the connection between the guide pillar 5 and the protective cylinder is released, the guide pillar 5 is recovered, the guide frame 1 is moved to a lower hole position, and the guide pillar and the guide frame can be reused. In this embodiment, the method for removing the guide pillar 5 includes cutting off the long bolt 6 between the guide pillar 5 and the lattice column 4 after the concrete reaches the designed strength, cutting off the connecting steel bar between the guide pillar 5 and the casing, and recovering the guide pillar.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the scope of the present invention.
Claims (3)
1. The utility model provides a leading truck that is used for foundation ditch envelope upright post stake and lattice column location to be under construction, its characterized in that, this leading truck is equipped with horizontally top frame and horizontally bottom frame the central authorities of leading truck are equipped with the guiding hole around the guiding hole the top frame with respectively be equipped with four along circumference equipartition, along radial extending's spacing bolt on the bottom frame, every be connected with the nut of two intervals settings on the spacing bolt, the nut rigid coupling is on the leading truck.
2. The guide frame for positioning and constructing the foundation pit support structure upright post pile and the lattice post as claimed in claim 1, wherein the top frame and the bottom frame are both of a structure shaped like a Chinese character 'jing', the guide hole is shaped like a Chinese character 'kou', and four limit bolts are respectively and vertically arranged on four sides of the guide hole.
3. The guide frame for positioning and constructing the foundation pit support structure upright post piles and the lattice posts according to claim 1, wherein the main body of the guide frame is formed by welding double-spliced channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221460245.9U CN217811023U (en) | 2022-06-10 | 2022-06-10 | Guide frame for positioning construction of foundation pit support structure upright post pile and lattice post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221460245.9U CN217811023U (en) | 2022-06-10 | 2022-06-10 | Guide frame for positioning construction of foundation pit support structure upright post pile and lattice post |
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| Publication Number | Publication Date |
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| CN217811023U true CN217811023U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221460245.9U Active CN217811023U (en) | 2022-06-10 | 2022-06-10 | Guide frame for positioning construction of foundation pit support structure upright post pile and lattice post |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012425A (en) * | 2022-06-10 | 2022-09-06 | 中国建筑第六工程局有限公司 | Positioning construction method for foundation pit support structure upright column pile and lattice column |
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2022
- 2022-06-10 CN CN202221460245.9U patent/CN217811023U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012425A (en) * | 2022-06-10 | 2022-09-06 | 中国建筑第六工程局有限公司 | Positioning construction method for foundation pit support structure upright column pile and lattice column |
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