Movable high-precision jig frame for on-site assembly of steel pipe columns in cover-excavation top-down construction method
By designing a movable high-precision tire frame and using the bracket and roller bearing structure, the problems of low on-site assembly accuracy and construction efficiency of steel pipe columns are solved, and high-precision support and inspection under different ground conditions are achieved, and construction efficiency is improved.
Patent Information
- Application Number
- CN202420949622.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In deep foundation pit construction, the on-site assembly accuracy of steel pipe columns is difficult to ensure, especially when the temporary construction site and the ground is unstable, the conventional tire frame production methods are cumbersome and inconvenient to move multiple times, resulting in low construction efficiency and difficult to control.
A movable high-precision tire frame with a cover excavation method is designed on site assembled by steel pipe columns. It adopts a combination of bracket structure and roller bearings to provide flexible support point adjustment, ensure the verticality and axis accuracy of the steel pipe columns, and passes through the movable groove. Steel and roller bearings are easy to assemble and inspect.
It realizes high-precision support and multi-directional inspection of steel pipe columns, reduces the amount of moving, improves construction efficiency, and can be used stably under different ground conditions, ensuring the accuracy requirements of steel pipe columns.
Smart Images
Figure CN222206347U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation pit engineering construction, in particular to a movable high-precision tire frame for on-site assembly of steel pipe columns using a cover-and-excavation reverse construction method. Background Art
[0002] With the continuous development and innovation of construction technology, many super-large and super-deep foundation pits have emerged in the construction of urban subways and the development of underground space. How to ensure the safe and effective construction of deep foundation pits? At present, the cover-excavation reverse construction method is the safest and most effective method for deep foundation pit construction. The so-called cover-excavation reverse construction method is to carry out reverse construction of the beams and slabs below the ground from top to bottom after the construction of the foundation pit retaining structure and steel pipe columns is completed. Therefore, the installation accuracy of the steel pipe columns as permanent structures is beyond doubt, and must meet the accuracy error requirements allowed by the design. The current design requires that the verticality of the steel column does not exceed 0.1%, and the center error does not exceed 15mm. This requires that the processing accuracy of the steel pipe columns in the factory or the installation accuracy of the on-site construction must take reliable construction measures to ensure this accuracy.
[0003] The design length of steel pipe columns is often more than 50 meters, but due to the limitation of transportation length, steel pipe columns can only be processed into the length allowed for transportation in the factory. After being transported to the site, they are assembled as a whole. The assembly method is either welding or flange bolt connection. In order to ensure the accuracy of the steel pipe column after assembly, it is required to have an assembly frame with a certain accuracy during splicing to ensure the accuracy of the steel pipe column. The conventional frame manufacturing method is to use a fixed door-shaped steel frame on a certain hardened concrete floor with expansion bolts or ground pre-embedded welding to fix it, and use horizontal steel channels to level and weld to provide vertical support points, and weld vertical channels on the left and right to control the axial line. This method is complicated to construct, especially when the construction site is a temporary site and the site cannot be provided for a long time. It needs to be moved many times, and each move must be re-erected, which is very time-consuming and laborious. Utility Model Content
[0004] The purpose of the utility model is to provide a combined steel pipe column frame, which is easy to use, can greatly improve work efficiency, and can effectively adjust the error accuracy of the spliced steel pipe columns.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a movable high-precision tire frame assembled on-site by a cover-and-excavation reverse construction method steel pipe column, including a tire frame body, the tire frame body including a bracket transverse bottom channel steel, the two ends of the bracket transverse bottom channel steel are connected with the bracket longitudinal bottom channel steel, the middle of the bracket longitudinal bottom channel steel is vertically arranged with a bracket vertical support channel steel, and a bracket vertical oblique support channel steel is arranged between the two ends of the bracket longitudinal bottom channel steel and the top of the bracket vertical support channel steel, and the top of the junction of the bracket vertical oblique support channel steel and the bracket vertical support channel steel is connected with the bracket upper support transverse channel steel.
[0006] Furthermore, the upper supporting transverse channel steel is connected and installed with a movable channel steel, and a roller bearing is installed on the upper surface of the movable channel steel.
[0007] Furthermore, it also includes a vertical top support screw rod, which passes through the upper supporting transverse channel steel and is connected to the movable channel steel, and the lower end of the vertical top support screw rod is fixed to the inner side surface of the upper supporting transverse channel steel through a vertical top support screw rod nut.
[0008] Furthermore, two roller bearings are provided.
[0009] Furthermore, a horizontal top support thread nut is fixedly installed on one end of the upper supporting transverse channel steel, a horizontal top support screw rod is installed on the horizontal top support thread nut, and the horizontal top support screw rod is connected to the movable channel steel.
[0010] Furthermore, a vertical baffle is provided on the side connected to the movable channel steel and the horizontal supporting screw rod.
[0011] Furthermore, the horizontal bottom channel steel of the bracket, the longitudinal bottom channel steel of the bracket, the vertical supporting channel steel of the bracket, the horizontal channel steel of the upper supporting portion of the bracket, and the vertical oblique supporting channel steel of the bracket are all connected by welding.
[0012] The beneficial technical effects of the utility model are:
[0013] (1) The utility model is composed of a plurality of movable independent units, each of which provides the support points required for the spliced steel pipe columns. The support points of each unit can be flexibly and accurately adjusted in the vertical and horizontal directions to ensure that the support points of the steel pipe columns are on the same horizontal plane and on one axis, and the support is provided with symmetrical roller support points, which can make the steel pipe columns flip, facilitate welding or flange bolt connection of the steel pipe columns, and provide quality inspection of multiple surfaces of the steel pipe columns;
[0014] (2) The tire frame of the utility model will not be affected by the height difference of the ground and the influence of the ground being hardened when in use;
[0015] (3) The utility model has a reasonable structural design, is easy to install, and can be reused as a tool, greatly reducing the workload of each move;
[0016] (4) The components provided in the present invention can adjust the elevation and axis of the support points with high precision, thereby ensuring the error accuracy of the spliced steel pipe columns. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0018] Figure 1 It is a schematic diagram of the use of the tire frame of the utility model;
[0019] Figure 2 It is a right side view of the tire frame of the utility model;
[0020] Figure 3 This is a front view of the tire frame of the utility model;
[0021] Figure 4 It is a top view of the tire frame of the utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the tire frame of the utility model;
[0023] Figure 6 It is a structural schematic diagram of the vertical supporting screw nut in the utility model.
[0024] Among them: A steel pipe column; C tire frame; 1 bracket horizontal bottom channel steel; 2 bracket longitudinal bottom channel steel; 3 bracket vertical support channel steel; 4 bracket upper support horizontal channel steel; 5 bracket vertical oblique support channel steel; 6 movable channel steel; 7 roller bearing; 8 vertical top support screw nut; 9 vertical top support screw; 10 horizontal top support thread nut; 11 horizontal top support screw. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Embodiment 1:
[0027] like Figure 1-2As shown, the movable high-precision tire frame for on-site assembly of steel pipe columns by the cover-excavation reverse construction method includes a tire frame body, the tire frame body includes a bracket transverse bottom channel steel 1, the two ends of the bracket transverse bottom channel steel 1 are connected to the bracket longitudinal bottom channel steel 2, the middle of the bracket longitudinal bottom channel steel 2 is vertically provided with a bracket vertical support channel steel 3, the bracket vertical oblique support channel steel 5 is provided between the two ends of the bracket longitudinal bottom channel steel 2 and the top of the bracket vertical support channel steel 3, and the top of the junction of the bracket vertical oblique support channel steel 5 and the bracket vertical support channel steel 3 is connected to the bracket upper support transverse channel steel 4. The above components 1-5 constitute the main frame of the tire frame, which is processed by Q235 channel steel and adopts a bench-type structure to form a stable structure. The function of the main frame is to provide the supporting force required for assembly on the one hand, and to have a certain height on the other hand to prevent the ring plates at the two ends of the steel pipe column from contacting the ground. The upper support transverse channel steel 4 is connected and installed with a movable channel steel 6, and the upper surface of the movable channel steel 6 is installed with a roller bearing 7.
[0028] Embodiment 2:
[0029] like Figure 1 to Figure 6 As shown, a movable high-precision tire frame assembled on-site by a cover-and-dig reverse method steel pipe column includes a tire frame body, wherein the tire frame body includes a bracket transverse bottom channel steel 1, and the two ends of the bracket transverse bottom channel steel 1 are connected with the bracket longitudinal bottom channel steel 2, and the bracket vertical support channel steel 3 is vertically arranged in the middle of the bracket longitudinal bottom channel steel 2, and the bracket vertical oblique support channel steel 5 is arranged between the two ends of the bracket longitudinal bottom channel steel 2 and the top of the bracket vertical support channel steel 3, and the bracket upper support transverse channel steel 4 is connected to the top of the junction of the bracket vertical oblique support channel steel 5 and the bracket vertical support channel steel 3. The supporting transverse channel steel 4 is connected and installed with a movable channel steel 6, and a roller bearing 7 is installed on the upper surface of the movable channel steel 6. It also includes a vertical top support screw rod 9, which passes through the upper supporting transverse channel steel 4 and is connected to the movable channel steel 6. The lower end of the vertical top support screw rod 9 is fixed to the inner side of the upper supporting transverse channel steel 4 through a vertical top support screw rod nut 8. Two roller bearings 7 are provided, and the bracket transverse bottom channel steel 1, the bracket longitudinal bottom channel steel 2, the bracket vertical support channel steel 3, the bracket upper support transverse channel steel 4, and the bracket vertical oblique support channel steel 5 are all welded.
[0030] Embodiment 3:
[0031] like Figure 1 to Figure 6As shown, a movable high-precision tire frame assembled on-site by a cover-and-dig reverse method steel pipe column includes a tire frame body, wherein the tire frame body includes a bracket transverse bottom channel steel 1, and the two ends of the bracket transverse bottom channel steel 1 are connected with the bracket longitudinal bottom channel steel 2, and the middle of the bracket longitudinal bottom channel steel 2 is vertically provided with a bracket vertical support channel steel 3, and a bracket vertical oblique support channel steel 5 is arranged between the two ends of the bracket longitudinal bottom channel steel 2 and the top of the bracket vertical support channel steel 3, and the top of the junction of the bracket vertical oblique support channel steel 5 and the bracket vertical support channel steel 3 is connected with a bracket upper support transverse channel steel 4, and the upper support transverse channel steel 4 is connected and installed with a movable channel steel 6, and a roller bearing 7 is installed on the upper surface of the movable channel steel 6, and also includes a vertical top support screw rod 9, and the vertical top support The screw rod 9 passes through the upper supporting transverse channel steel 4 and is connected with the movable channel steel 6. The lower end of the vertical top supporting screw rod 9 is fixed to the inner side of the upper supporting transverse channel steel 4 through the vertical top supporting screw rod nut 8. Two roller bearings 7 are provided. A horizontal top supporting threaded nut 10 is fixedly installed at one end of the upper supporting transverse channel steel 4. A horizontal top supporting screw rod 11 is installed on the horizontal top supporting threaded nut 10. The horizontal top supporting screw rod 11 is connected to the movable channel steel 6. A vertical baffle is provided on the side connected to the movable channel steel 6 and the horizontal top supporting screw rod 11. The horizontal bottom channel steel 1 of the bracket, the longitudinal bottom channel steel 2 of the bracket, the vertical supporting channel steel 3 of the bracket, the upper supporting transverse channel steel 4 of the bracket, and the vertical oblique supporting channel steel 5 of the bracket are all welded.
[0032] The functions and working principles of the various components in the above-mentioned embodiments are as follows: the movable channel steel 6 is an up-and-down, left-and-right movable structure. Under the supporting action of the vertical supporting screw rod 9, the required height can be adjusted up and down, and under the supporting action of the supporting screw rod 11, the central axis position can be adjusted left and right to meet the elevation and axis requirements required for splicing steel pipe columns; one end of the vertical supporting screw rod 9 is supported on the lower inner surface of the movable channel steel 6 with two rollers on the surface that can be moved up and down, left and right, and the other end is inserted into the vertical supporting screw rod nut 8 embedded and welded with the upper supporting horizontal channel steel 4, and the required support point elevation is provided in the vertical direction through the supporting force of the vertical supporting screw rod 9 and the stroke of the vertical supporting screw rod 9; the roller bearing 7 is used for the spliced steel The steel pipe column supported by the splicing or bolt connection of the pipe column can be turned over and rolled, which is convenient for construction, and also ensures the straightness of the spliced steel pipe column in all directions. In addition, the two roller bearings 7 are on both sides of the steel pipe column, which can prevent the steel pipe column from sliding on the tire frame, ensuring construction safety. The bearing seats of the two roller bearings 7 are respectively fixed and welded at both ends after the top surface of the movable channel steel 6 is evenly divided, and the center line of the two rollers is used as the central axis of the bracket; there is a certain thread distance inside the top support thread nut 10, which can make the top support screw rod 11 adjust left and right. The top support screw rod 11 can be fine-tuned under the action of the top support thread nut 10, which can push the movable channel steel 6 and the roller bearing 7 to move left and right, thereby realizing the precise adjustment of the steel pipe column. The utility model is composed of a plurality of movable independent units, which respectively provide the support points required for the splicing of steel pipe columns. The support points of each unit body can be flexibly and accurately adjusted in the vertical and horizontal directions to ensure that the support points of the steel pipe column are on the same horizontal plane and on an axis, and the support is equipped with symmetrical roller support points, which can make the steel pipe column flip over, facilitate welding or flange bolt connection of the steel pipe column, and provide quality inspection of multiple surfaces of the steel pipe column; the tire frame will not be affected by the height difference of the ground and the influence of the ground hardening when in use; the utility model has a reasonable structural design, convenient installation, tool-like reuse, and greatly reduces the workload of each move; the components provided in the utility model can perform high-precision adjustment on the elevation and axis of the support points, ensuring the error accuracy of the spliced steel pipe columns.
[0033] The practical operation specific steps of the utility model are:
[0034] (1) The number of independent unit brackets required for steel pipe column splicing is completed;
[0035] (2) The independent unit bracket is transported to the construction site;
[0036] (3) Select the site according to the length and width of the assembled steel pipe column within a certain margin range;
[0037] (4) Place the independent unit brackets in sequence on an axis according to the required quantity and spacing;
[0038] (5) Accurately adjust the elevation and axis of the unit bracket, set up the theodolite, and use the theodolite to project an axis; perform high-precision fine-tuning of the beam left and right under the action of the screw 5; adjust the central axis of each unit bracket to be consistent with the center line of the theodolite;
[0039] (6) Set up a level; perform high-precision fine-tuning of the crossbeam up and down under the support of the vertical support screw 9; make the top surface elevation of each support roller of each unit bracket at the same elevation;
[0040] (7) The above work completes the erection of each unit bracket of the steel pipe column splicing frame.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. The movable high-precision tire frame for on-site assembly of steel pipe columns by the cover-excavation reverse construction method is characterized by: The tire frame comprises a tire frame body, wherein the tire frame body comprises a support transverse bottom channel steel (1), the two ends of the support transverse bottom channel steel (1) are connected to the support longitudinal bottom channel steel (2), a support vertical support channel steel (3) is vertically arranged in the middle of the support longitudinal bottom channel steel (2), a support vertical oblique support channel steel (5) is arranged between the two ends of the support longitudinal bottom channel steel (2) and the top of the support vertical support channel steel (3), and the top of the joint between the support vertical oblique support channel steel (5) and the support vertical support channel steel (3) is connected to the support upper support transverse channel steel (4).
2. The high-precision movable frame for on-site assembly of steel pipe columns by the cover-and-excavation reverse construction method according to claim 1 is characterized in that: The upper supporting transverse channel steel (4) is connected and installed with a movable channel steel (6), and a roller bearing (7) is installed on the upper surface of the movable channel steel (6).
3. The high-precision movable frame for on-site assembly of steel pipe columns by the cover-and-dig reverse construction method according to claim 2 is characterized in that: It also includes a vertical top support screw rod (9), which passes through the upper supporting transverse channel steel (4) and is connected to the movable channel steel (6), and the lower end of the vertical top support screw rod (9) is fixed to the inner side surface of the upper supporting transverse channel steel (4) through a vertical top support screw rod nut (8).
4. The high-precision movable frame for on-site assembly of steel pipe columns by the cover-and-cut reverse construction method according to claim 2 is characterized in that: Two roller bearings (7) are provided.
5. The high-precision movable frame for on-site assembly of steel pipe columns by the cover-excavation reverse construction method according to any one of claims 2 to 4, characterized in that: A horizontal top support screw nut (10) is fixedly mounted on one end of the upper supporting transverse channel steel (4), a horizontal top support screw rod (11) is mounted on the horizontal top support screw nut (10), and the horizontal top support screw rod (11) is connected to the movable channel steel (6).
6. The high-precision movable frame for on-site assembly of steel pipe columns by the cover-and-dig reverse construction method according to claim 5 is characterized in that: A vertical baffle is provided on the side connected to the movable channel steel (6) and the horizontal supporting screw rod (11).
7. The high-precision movable frame for on-site assembly of steel pipe columns by the cover-and-cut reverse construction method according to claim 1 is characterized in that: The bracket transverse bottom channel steel (1), the bracket longitudinal bottom channel steel (2), the bracket vertical support channel steel (3), the bracket upper support transverse channel steel (4), and the bracket vertical oblique support channel steel (5) are all connected by welding.
Citation Information
Cited By
Non-linear S-shaped wide and thick plate factory modularization rapid building construction method
CN121047433A