A device for adjusting the elevation of a cuphead foundation insert precast concrete column

Abstract

The utility model relates to a kind of elevation adjusting device of cup mouth foundation inner plug prefabricated concrete column, belong to the field of fabricated building structure construction technology.The utility model is equipped with hexagonal head inner and outer through wire hollow screw rod, anchor bolt, gasket and other structure assembly elevation adjusting mechanism, and is installed in cooperation with pre-embedded steel column foot and prefabricated concrete column, make up the deficiency in conventional construction method, solve the defect problem of prefabricated concrete column in cup mouth foundation elevation, perpendicularity adjustment, through the linkage between pre-embedded anchor bolt, elevation adjusting mechanism and steel column foot, realize the fine three-dimensional adjustment of plane positioning, elevation, perpendicularity, after installation adjustment, using fixed nut instant locking, avoid the secondary deviation caused by subsequent construction process, solve the core pain point problem of traditional construction method poor precision, low efficiency.

Description

Technical Field

[0001] This utility model relates to an elevation adjustment device for a precast concrete column inserted into a cup-shaped foundation, belonging to the field of prefabricated building structure construction technology. Background Technology

[0002] With the increasing industrialization of prefabricated buildings, the application of prefabricated form with precast concrete columns inserted into the cup-shaped foundation is also increasing, which puts forward higher requirements for the hoisting and construction of prefabricated components.

[0003] The positioning, elevation, and verticality control of precast concrete columns are key control items during their construction. In conventional construction methods, the positioning control of precast concrete columns is affected by the positioning of the foundation construction, the accuracy of the cross-sectional dimensions of the precast components, and the positioning during hoisting. The elevation and verticality control of precast concrete columns are affected by the elevation of the bottom of the foundation cup, the thickness of the grouting and leveling inside the cup, and the accuracy of the length of the precast components.

[0004] However, the positioning, elevation, and verticality control of traditional precast concrete columns within the foundation cup rely on manual adjustments. The elevation of the precast concrete column is adjusted by leveling the grout at the bottom of the foundation cup, and the positioning and verticality are adjusted by temporary wedges at the cup opening. This often has the following drawbacks:

[0005] 1) Repeatedly striking the wedge block can easily cause the column to shift, resulting in low positioning accuracy;

[0006] 2) Each column needs to be measured and fine-tuned one by one, which is too time-consuming and inefficient;

[0007] 3) Loose wedges before grouting the bottom of the foundation cup can easily cause elevation deviation;

[0008] 4) Uneven grout layer thickness can easily lead to deviations in column top elevation;

[0009] 5) Multiple rounds of elevation re-measurement and grouting are required, making the process complex. Utility Model Content

[0010] To address the aforementioned problems, this utility model provides an elevation adjustment device for a precast concrete column inserted into a cup-shaped foundation. The device includes an embedded steel column base installed in the cup-shaped foundation and supporting the precast concrete column. The embedded steel column base is equipped with an elevation adjustment mechanism, which includes:

[0011] A hexagonal head hollow screw with internal and external threads is fitted to a pre-embedded steel column base by a fixing nut. The lower hexagonal head at the bottom of the hexagonal head hollow screw is located at the bottom elevation of the cup.

[0012] Anchor bolts are used to fit the internal threads of hexagonal head hollow threaded rods with internal and external threads.

[0013] The upper washer is fitted between the fixing nut and the pre-embedded steel column base;

[0014] The lower washer is assembled between the pre-embedded steel column base and the lower hexagonal head of the hexagonal head hollow threaded rod.

[0015] Furthermore, the pre-embedded steel column base includes a steel base plate and a square steel tube disposed in the middle of the steel base plate. The diameter of the square steel tube is smaller than the length of any side of the steel base plate. The steel base plate protrudes from the bottom outer periphery of the square steel tube to form an annular panel. Multiple elongated elliptical holes are distributed on the annular panel. The hexagonal head hollow screw with internal and external threads is fitted into the elongated elliptical holes by a fixing nut.

[0016] Furthermore, stiffening ribs connect the annular panel to the square steel tube.

[0017] Furthermore, the precast concrete column is provided with a plurality of rectangularly distributed longitudinal steel bars, which are welded to the side of the square steel pipe.

[0018] Furthermore, the center positioning of the anchor bolts is consistent with the center positioning of the elongated elliptical hole in the annular panel; the center positioning of the steel base plate is consistent with the center positioning of the bottom of the cup-shaped foundation.

[0019] Furthermore, the length of any side of the steel base plate is less than the width of the cup bottom of the cup rim foundation.

[0020] Furthermore, the upper part of the anchor bolt extends through the top of the hexagonal head hollow threaded rod.

[0021] The beneficial effects of this utility model are:

[0022] This utility model uses a hexagonal head hollow screw with internal and external threads, anchor bolts, washers, and other structural components to form an elevation adjustment mechanism. This mechanism works in conjunction with pre-embedded steel column bases and precast concrete columns to overcome the shortcomings of conventional construction methods. It solves the problems of elevation and verticality adjustment of precast concrete columns within the cup-shaped foundation. Through the linkage between the pre-embedded anchor bolts, the elevation adjustment mechanism, and the steel column base, precise three-dimensional adjustment of planar positioning, elevation, and verticality is achieved. After installation and adjustment, a fixing nut is used for immediate locking, avoiding secondary deviations caused by subsequent construction procedures. This solves the core pain points of poor accuracy and low efficiency in traditional construction methods. Attached Figure Description

[0023] Figure 1 (a) and (b) are schematic diagrams of the overall structure assembly in one embodiment of this utility model;

[0024] Figure 2 This is an exploded view of the overall structure in one embodiment of the present invention;

[0025] Figure 3(a) and (b) are side sectional views of the overall structure in one embodiment of this utility model;

[0026] In the diagram: 1. Cup-shaped foundation; 2. Anchor bolts; 3. Hexagonal head hollow threaded rods; 4. Lower washer; 5. Long oval hole; 6. Upper washer; 7. Fixing nut; 8. Embedded steel column base; 8-1. Steel base plate; 8-2. Stiffening ribs; 8-3. Square steel pipe; 9. Precast concrete column; 10. Longitudinal reinforcement bars inside the column; 11. Gap between cups. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example 1

[0031] like Figures 1-3 As shown, this utility model provides an elevation adjustment device for a precast concrete column inserted into a cup-shaped foundation. It includes an embedded steel column base 8 installed on the cup-shaped foundation 1 and supporting the precast concrete column 9. The embedded steel column base 8 is equipped with an elevation adjustment mechanism, which includes a hexagonal head hollow threaded rod 3, an anchor bolt 2, an upper washer 6, and a lower washer 4. Wherein:

[0032] The pre-embedded steel column base 8 includes a steel base plate 8-1 and a square steel tube 8-3 set in the middle of the steel base plate 8-1. The diameter of the square steel tube 8-3 is smaller than the length of any side of the steel base plate 8-1. The steel base plate 8-1 protrudes from the bottom outer periphery of the square steel tube 8-3 to form an annular panel. Four elongated elliptical holes 5 are distributed on the annular panel. The hexagonal head hollow screw 3 with internal and external through threads is engaged with the elongated elliptical holes 5 by a fixing nut 7.

[0033] Furthermore, a stiffening rib 8-2 connects the annular panel to the square steel tube 8-3. Multiple rectangularly distributed longitudinal reinforcing bars 10 are provided inside the precast concrete column 9, and these longitudinal reinforcing bars 10 are welded to the side of the square steel tube 8-3. The length of any side of the steel base plate 8-1 is less than the width of the cup bottom of the cup-shaped foundation 1.

[0034] Preferably, the longitudinal direction of the elongated elliptical hole 5 is along the side length direction of the steel base plate 8-1. The longitudinal length of the elongated elliptical hole 5 is 10mm to 25mm greater than the outer diameter of the hexagonal head hollow screw 3, and the short width is 2mm to 5mm greater than the outer diameter of the hexagonal head hollow screw 3, so as to have a certain planar position adjustment gap. The net distance from the outer edge of the elongated elliptical hole 5 to the outer edge of the steel base plate 8-1 is at least equal to the outer diameter of the hexagonal head hollow screw 3, and the net distance from the inner edge of the elongated elliptical hole 5 to the outer side of the square steel tube 8-3 is at least sufficient to meet the tightening operation space requirements of the hexagonal head hollow screw 3 and the fixing nut 7.

[0035] In some embodiments, the planar dimensions of the square steel tube 8-3 are consistent with the rectangular outer dimensions enclosed by the longitudinal reinforcing bars 10 inside the precast concrete column 9, so as to ensure that the longitudinal reinforcing bars 10 inside the column can be welded to the side of the square steel tube 8-3; the vertical height of the square steel tube 8-3 is at least required to meet the requirement of the sum of the height of the stiffening rib 8-2 and the welding height of the longitudinal reinforcing bars 10 inside the column.

[0036] In some embodiments, the steel base plate 8-1 is a rectangular plate, and the maximum dimension of each side of the steel base plate 8-1 is at least 25mm smaller than the bottom dimension of the cup base 1, so as to meet the requirement of being installed on the bottom of the cup base 1 and having a certain planar position adjustment gap; the minimum dimension of each side of the steel base plate 8-1 should meet the requirement that the stiffening rib 8-2 and the square steel tube 8-3 can be welded and fixed thereon.

[0037] In some embodiments, before the reinforcement binding of the precast concrete column 9 is completed and the concrete is poured, the longitudinal reinforcement 10 inside the column is welded to the side of the square steel tube 8-3 in the steel column base 8. During welding, the center of the precast concrete column 9 and the steel column base 8 should be aligned. Then, the concrete of the precast concrete column 9 is poured, cured and reaches the design strength. The bottom elevation of the concrete pouring is higher than the surface elevation of the stiffening rib 8-2, so as to reserve space for the tightening and installation of the hexagonal head hollow threaded rod 3 and the fixing nut 7 in the later stage.

[0038] The hexagonal head hollow screw 3 with internal and external threads is fitted to the pre-embedded steel column base 8 through a fixing nut 7. The top and bottom of the hexagonal head hollow screw 3 are respectively provided with an upper hexagonal head and a lower hexagonal head, wherein the lower hexagonal head is located at the bottom elevation of the cup;

[0039] Anchor bolts 2 are fitted into the internal threads of hexagonal head hollow threaded rods 3. Furthermore, the number of anchor bolts 2 is consistent with the number of elongated elliptical holes 5. The anchor bolts 2 are installed, positioned, and their exposed threads protected before the reinforcement binding of the cup-shaped foundation 1 is completed and before concrete pouring. The center positioning of the anchor bolts 2 is consistent with the center positioning of the elongated elliptical holes 5 on the annular panel, and the center positioning of the steel base plate 8-1 is consistent with the center positioning of the cup bottom of the cup-shaped foundation 1. The exposed length of the anchor bolts 2 meets the requirements for the length of the hexagonal head hollow threaded rods 3 and their adjustable length. Then, the concrete pouring and curing of the cup-shaped foundation 1 are carried out until the design strength is achieved. Furthermore, the upper part of the anchor bolts 2 protrudes from the top of the hexagonal head hollow threaded rods 3.

[0040] Furthermore, the upper and lower hexagonal heads of the hexagonal head hollow screw 3 have external threads, the specifications of which match the internal thread specifications of the fixing nut 7, to ensure that the fixing nut 7 can be screwed into the hexagonal head hollow screw 3; the external thread of the anchor bolt 2 matches the internal thread of the hexagonal head hollow screw 3, to ensure that the hexagonal head hollow screw 3 can be screwed into the anchor bolt 2. The length of the hexagonal head hollow screw 3 meets the requirements of the sum of the thickness of the steel base plate 8-1 and the fixing nut 7, and allows for vertical adjustment.

[0041] Upper washer 6 is fitted between the fixing nut 7 and the embedded steel column base 8; lower washer 4 is fitted between the embedded steel column base 8 and the lower hexagonal head of the hexagonal head hollow screw 3. The bore diameters of lower washer 4 and upper washer 6 match the outer diameter of the hexagonal head hollow screw 3.

[0042] In some embodiments, the number of hexagonal head hollow threaded rods 3, lower washers 4, elongated elliptical holes 5, upper washers 6, and fixing nuts 7 is the same as the number of anchor bolts 2. The hexagonal head hollow threaded rods 3 are screwed onto the anchor bolts 2 up to the bottom elevation of the cup-shaped foundation 1. The lower washers 4 are placed in, and the precast concrete column 9 integral component of the embedded steel column foot 8 is hoisted and its center is aligned with the center of the cup-shaped foundation 1. The integral component is lowered so that the hexagonal head hollow threaded rods 3 and anchor bolts 2 are inserted into the elongated elliptical holes 5 of the steel column foot 8. Then, the upper washers 6 are placed in, and the fixing nuts 7 are initially tightened.

[0043] Furthermore, by simultaneously tightening all the hexagonal hollow screws 3 with internal and external threads using the upper hexagonal head, the elevation of the precast concrete column 9 and the steel column base 8 is passively adjusted. By asynchronously tightening the hexagonal hollow screws 3 on opposite sides using the upper hexagonal head, the verticality of the precast concrete column 9 is passively adjusted. By using the adjustment gap between the elongated elliptical hole 5 and the hexagonal hollow screws 3 with internal and external threads, the relative position of the precast concrete column 9 and the cup-shaped foundation 1 is finely adjusted using temporary wedges and other tools. After the elevation, verticality, and planar positioning of the precast concrete column 9 are precisely adjusted, the fixing nut 7 is finally tightened to achieve the function of temporary fixing of the precast concrete column during the construction stage.

[0044] Furthermore, the gap 11 between the column and the cup is filled with fine stone concrete with a strength grade one level higher than that of the cup foundation 1. The bottom is filled and compacted first, then the surrounding area is filled and compacted. After curing, it reaches the design strength, thus achieving the purpose of fixing the cup foundation 1 and the precast concrete column 9.

[0045] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A device for adjusting the elevation of a precast concrete column inserted into a cup-shaped foundation, characterized in that, Includes a pre-embedded steel column base (8) set on the cup-shaped foundation (1) and supporting the precast concrete column (9), wherein the pre-embedded steel column base (8) is provided with an elevation adjustment mechanism, the elevation adjustment mechanism including: The hexagonal head hollow screw (3) with internal and external threads is fitted to the pre-embedded steel column base (8) by a fixing nut (7). The lower hexagonal head of the hexagonal head hollow screw (3) is located at the bottom elevation of the cup. Anchor bolt (2) fits into the internal thread of a hexagonal head hollow screw (3); The upper washer (6) is assembled between the fixing nut (7) and the pre-embedded steel column base (8); The lower washer (4) is assembled between the pre-embedded steel column base (8) and the lower hexagonal head of the hexagonal head hollow screw rod (3) with internal and external through threads.

2. The elevation adjustment device according to claim 1, characterized in that, The pre-embedded steel column base (8) includes a steel base plate (8-1) and a square steel tube (8-3) set in the middle of the steel base plate (8-1). The diameter of the square steel tube (8-3) is smaller than the side length of any side of the steel base plate (8-1). The steel base plate (8-1) is exposed from the bottom outer periphery of the square steel tube (8-3) to form an annular panel. Multiple elongated elliptical holes (5) are distributed on the annular panel. The hexagonal head hollow screw (3) with internal and external through threads is fitted into the elongated elliptical holes (5) by a fixing nut (7).

3. The elevation adjustment device according to claim 2, characterized in that, The annular panel is connected to the square steel tube (8-3) by a stiffening rib (8-2).

4. The elevation adjustment device according to claim 3, characterized in that, The precast concrete column (9) is provided with a plurality of rectangularly distributed longitudinal steel bars (10), which are welded to the side of the square steel pipe (8-3).

5. The elevation adjustment device according to claim 4, characterized in that, The center positioning of the anchor bolt (2) is consistent with the center positioning of the elongated elliptical hole (5) of the annular panel; the center positioning of the steel base plate (8-1) is consistent with the center positioning of the cup bottom of the cup base (1).

6. The elevation adjustment device according to claim 5, characterized in that, The length of any side of the steel base plate (8-1) is less than the width of the cup bottom of the cup base (1).

7. The elevation adjustment device according to claim 6, characterized in that, The upper part of the anchor bolt (2) extends through the top of the hexagonal head hollow threaded rod (3).

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