A multifunctional auxiliary positioning device for prefabricated column grouting sleeve connection

Abstract

The present invention discloses a multifunctional auxiliary positioning device for connecting grouting sleeves of prefabricated columns, comprising a steel bar positioning device reserved at the top of a lower prefabricated column and a grouting sleeve positioning device reserved at the bottom of an upper prefabricated column. The steel bar positioning device reserved at the top of the lower prefabricated column and the grouting sleeve positioning device reserved at the bottom of the upper prefabricated column are all pre-buried during the production of prefabricated circular-section columns. When the grouting sleeves of the upper prefabricated columns and the lower prefabricated columns are connected at the construction site, the alignment between the grouting sleeves at the bottom of the upper prefabricated columns and the steel bars reserved at the top of the lower prefabricated columns is achieved through rapid positioning and alignment between the steel bar positioning device reserved at the top of the lower prefabricated columns and the grouting sleeve positioning device reserved at the bottom of the upper prefabricated columns, thereby improving the assembly efficiency of the components and also improving the shear bearing capacity at the joints of the components.

Description

Technical Field

[0001] The invention relates to a special-purpose building structure construction device, in particular to a multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves. Background Art

[0002] Grouting sleeve connection is a common means of mechanical connection of prefabricated structural steel bars. Its principle is to insert two steel bars into a special metal sleeve. The inner wall of the sleeve is provided with protruding ribs, and both ends of the sleeve are provided with grouting holes and grouting holes. During construction, high-strength micro-expansion grouting material is injected from the grouting hole to fill the gap between the sleeve and the steel bar. After the grouting material solidifies and hardens, force transmission between the steel bars at both ends of the sleeve is achieved. Its force transmission mechanism is that the axial force on the steel bar is transmitted to the sleeve through bonding force, friction force and mechanical bite force, and then transmitted to the steel bar at the other end through the sleeve. Compared with mechanical connection methods such as sleeve extrusion connection, tapered thread connection, and straight thread connection, sleeve grouting connection is more convenient to construct in places with dense steel bars, reduces the amount of wet concrete work on site, reduces on-site labor, and realizes green construction.

[0003] However, for the grouting sleeve connection of vertical components such as prefabricated columns and prefabricated shear walls, the steel bars that need to be connected between components are relatively dense, and there is a position deviation when the steel bars are tied in the two components. This makes it very inconvenient to insert a large number of reserved steel bars of one component into the reserved sleeve of another component one by one during the on-site construction process, and the assembly efficiency is very low. At the same time, the joint position of prefabricated columns and prefabricated shear walls is usually reserved at the floor elevation, which is the key part of the structure that bears shear force. The difficulty of vertical connection between prefabricated components is also easy to lead to problems such as barbaric construction on site and unqualified construction quality, leaving safety hazards to the project. For the grouting sleeve connection of rectangular section prefabricated parts, such as rectangular section columns and shear walls, the components can be adjusted by translation in the longitudinal and transverse directions during assembly to align the position between the steel bars and the grouting sleeves. For circular section columns, not only do they need to be translated in the longitudinal and transverse directions, but they also need to be rotated along the axis to align the position between the steel bars and the grouting sleeves. The difficulty of assembly is undoubtedly greatly increased. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a multifunctional auxiliary positioning device for prefabricated column grouting sleeve connection, which improves the assembly efficiency when connecting prefabricated circular section column grouting sleeves and at the same time, also improves the shear bearing capacity at the joints of the components.

[0005] The present invention is implemented as follows: the present invention discloses a multifunctional auxiliary positioning device for connecting grouting sleeves of prefabricated columns, including a steel bar positioning device for fixing on the top of the lower prefabricated column and a grouting sleeve positioning device for fixing on the bottom of the upper prefabricated column. The steel bar positioning device includes a first bottom plate, a first steel bar positioning hole is provided on the first bottom plate for the reserved steel bars of the top of the lower prefabricated column to pass through, a positioning column is fixed on the upper end of the first bottom plate, the plane projection of the positioning column is a rectangle, a left horizontal plane is provided on the left side of the upper end face of the positioning column, a right horizontal plane is provided on the right side of the upper end face of the positioning column, the left horizontal plane is higher than the right horizontal plane, and the upper end of the positioning column is fixed with a positioning column. A middle horizontal plane is provided between the left horizontal plane and the right horizontal plane. The height of the middle horizontal plane is higher than that of the left horizontal plane. The middle horizontal plane and the right horizontal plane are connected by the right vertical plane. The grouting sleeve positioning device includes a second bottom plate. The second bottom plate is provided with a second steel bar positioning hole for the reserved steel bars of the top of the lower prefabricated column to pass through and a positioning hole for the positioning column to pass through. The second steel bar positioning holes on the second bottom plate are respectively connected with the grouting sleeves reserved at the bottom of the upper prefabricated column in a one-to-one correspondence. A positioning seat is provided at the upper end of the second bottom plate. The positioning seat is provided with a positioning cavity for loosely matching with the positioning column. The positioning cavity of the positioning seat is connected with the positioning hole on the second bottom plate.

[0006] Furthermore, the second base plate of the grouting sleeve positioning device is fixed to the bottom of the upper prefabricated column, the positioning seat at the upper end of the second base plate extends into the reserved hole at the bottom of the upper prefabricated column, and the second steel bar positioning holes on the second base plate are respectively connected to the grouting sleeves reserved at the bottom of the upper prefabricated column.

[0007] Furthermore, the first bottom plate of the steel bar positioning device is fixed to the top of the lower prefabricated column, and the reserved steel bars at the top of the lower prefabricated column extend upward after passing through the first steel bar positioning hole of the first bottom plate.

[0008] Furthermore, shear-resistant steel bars are fixed to the lower end of the base plate, and the shear-resistant steel bars extend vertically downward and are fixed in the tops of the prefabricated columns of the lower layer.

[0009] Further, the positioning column is surrounded by four upright inner side plates, and the four inner side plates are vertically fixed on the first bottom plate and form a rectangle, wherein the first inner side plate of the four inner side plates is parallel to and spaced from the second inner side plate, the first inner side plate and the second inner side plate are both rectangular plates, and the height H1 of the first inner side plate is higher than the height H2 of the second inner side plate, and the third inner side plate of the four inner side plates is parallel to and spaced from the fourth inner side plate, and a first horizontal plane with a height of H1 is provided on a side of the upper end surface of the third inner side plate close to the first inner side plate, and the upper end surface of the third inner side plate is close to the second inner side plate. A second horizontal plane with a height of H2 is provided on one side of the fourth inner plate, a first horizontal plane with a height of H1 is provided on the side of the upper end surface of the fourth inner plate close to the first inner plate, a second horizontal plane with a height of H2 is provided on the side of the upper end surface of the fourth inner plate close to the second inner plate, and a third horizontal plane with a height of H3 is provided on the upper end surface of the fourth inner plate between the first horizontal plane and the second horizontal plane. The height H3 of the third horizontal plane is higher than the height H1 of the first inner plate, and the third horizontal plane is connected to the second horizontal plane through a first vertical plane; the third horizontal plane is connected to the first horizontal plane through a second vertical plane.

[0010] Furthermore, the cross section of the positioning column is square, and a hoisting hole is formed on the positioning column.

[0011] Furthermore, the positioning seat is surrounded by four upright outer plates, which are vertically fixed on the second bottom plate and form a rectangle, and a positioning cavity for the positioning column to be inserted and matched is formed in the middle of the four outer plates; wherein the four outer plates are all rectangular plates.

[0012] Furthermore, a top plate is fixed to the upper ends of the four outer plates, and the height of the four outer plates is greater than the height of the positioning column.

[0013] Furthermore, the cross section of the positioning seat is square.

[0014] The beneficial effects of the present invention are as follows: since the steel bar positioning device reserved at the top of the lower prefabricated column and the grouting sleeve positioning device reserved at the bottom of the upper prefabricated column of the multifunctional auxiliary equipment of the present invention are both embedded in advance during the production of the prefabricated circular section column, when the grouting sleeves of the upper prefabricated column and the lower prefabricated column are connected by grouting sleeves at the construction site, the alignment between the grouting sleeve at the bottom of the upper prefabricated column and the steel bar reserved at the top of the lower prefabricated column is achieved through rapid positioning and alignment between the steel bar positioning device reserved at the top of the lower prefabricated column and the grouting sleeve positioning device reserved at the bottom of the upper prefabricated column, thereby improving the assembly efficiency of the components and also improving the shear bearing capacity at the joints of the components.

[0015] Compared with the prior art, the present invention has the following four advantages:

[0016] 1. During the production of components, the steel bar positioning device and the grouting sleeve positioning device are pre-buried. The positioning holes on the steel bar positioning device and the grouting sleeve positioning device can effectively improve the accuracy of the steel bar arrangement of the prefabricated components;

[0017] 2. During the component hoisting process, the translational adjustment and alignment between the steel bar positioning device and the grouting sleeve positioning device can effectively avoid the rotation adjustment of the circular cross-section column, thereby realizing the rapid one-to-one alignment between the steel bars and the grouting sleeves of the upper and lower prefabricated columns, which can effectively improve the assembly efficiency of the grouting sleeve connection of the upper and lower prefabricated columns;

[0018] 3. The bottom plate of the steel bar positioning device is provided with shear steel bars anchored at the top of the lower prefabricated column, and the grouting sleeve positioning device is directly anchored at the bottom of the upper prefabricated column. After the two are assembled, they form an integral structure, which can be used as a structural shear key at the joint of the upper and lower columns, thereby improving the shear bearing capacity of the structure;

[0019] 4. The steel bar positioning device is embedded in the top of the column, and a hoisting hole is reserved. It can be used as a hoisting device for the component. There is no need to set up additional hooks and other devices in the component. At the same time, there is no need to remove it after the hoisting is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the pre-embedded steel bar positioning device for the top of the lower prefabricated circular-section column of the present invention;

[0021] Figure 2 for Figure 1 AA section view;

[0022] Figure 3 for Figure 1 BB section view;

[0023] Figure 4 is a schematic diagram of the third inner side plate;

[0024] Figure 5 It is a schematic diagram of a positioning device for pre-embedded grouting sleeves at the bottom of an upper prefabricated circular-section column of the present invention;

[0025] Figure 6 for Figure 5 CC section view;

[0026] Figure 7 for Figure 5 DD section view;

[0027] Figure 8 is a schematic diagram of the top plate;

[0028] Fig. 9 It is a schematic diagram of the state of the hoisting position 1 during the hoisting process of the upper prefabricated column and the lower prefabricated column of the present invention;

[0029] Fig.10 It is a schematic diagram of the state of the hoisting position 2 during the hoisting process of the upper prefabricated column and the lower prefabricated column of the present invention;

[0030] Fig.11 It is a schematic diagram of the state of the hoisting position 3 during the hoisting process of the upper prefabricated column and the lower prefabricated column of the present invention;

[0031] Fig.12 It is a schematic diagram of the state of hoisting position 4 during the hoisting process of the upper prefabricated columns and the lower prefabricated columns of the present invention.

[0032] In the accompanying drawings, 1 is a steel bar positioning device, 11 is a first bottom plate, 111 is a first steel bar positioning hole, 12 is a positioning column, 121 is a first inner plate, 122 is a second inner plate, 123 is a third inner plate, 124 is a fourth inner plate, 125 is a lifting hole, 126 is a left horizontal plane, 127 is a right horizontal plane, 128 is a middle horizontal plane, 129 is a first vertical plane, 13 is a shear steel bar, 2 is a grouting sleeve positioning device, 21 is a second bottom plate, 211 is a second steel bar positioning hole, 212 is a positioning hole, 22 is a positioning seat, 221 is an outer plate, 222 is a positioning cavity, and 223 is a top plate. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 12The present embodiment discloses a multifunctional auxiliary positioning device for connecting grouting sleeves of prefabricated columns, comprising a steel bar positioning device 1 for fixing on the top of the lower prefabricated column and a grouting sleeve positioning device 2 for fixing on the bottom of the upper prefabricated column. The steel bar positioning device 1 comprises a first bottom plate, the first bottom plate is provided with a first steel bar positioning hole for passing the reserved steel bars of the top of the lower prefabricated column, a positioning column is fixed to the upper end of the first bottom plate, the positioning column is rectangular, a left horizontal plane is provided on the left side of the upper end face of the positioning column, a right horizontal plane is provided on the right side of the upper end face of the positioning column, the left horizontal plane is higher than the right horizontal plane, and the upper end face of the positioning column is located between the left horizontal plane and the right horizontal plane A middle horizontal plane is provided, and the height of the middle horizontal plane is higher than that of the left horizontal plane. The middle horizontal plane is connected to the right horizontal plane by a first vertical plane, and the middle horizontal plane is connected to the left horizontal plane by a second vertical plane. The grouting sleeve positioning device 2 includes a second bottom plate, and the second bottom plate is provided with a second steel bar positioning hole for the reserved steel bars of the top of the lower prefabricated column to pass through and a positioning hole for the positioning column to pass through. The second steel bar positioning holes on the second bottom plate are respectively connected with the grouting sleeves reserved at the bottom of the upper prefabricated column in a one-to-one correspondence. A positioning seat is provided at the upper end of the second bottom plate, and the positioning seat is provided with a positioning cavity for gap matching with the positioning column, and the positioning cavity of the positioning seat is connected with the positioning hole on the second bottom plate.

[0035] Furthermore, the second base plate of the grouting sleeve positioning device 2 is fixed to the bottom of the upper prefabricated column, the positioning seat at the upper end of the second base plate extends into the reserved hole at the bottom of the upper prefabricated column, and the second steel bar positioning holes on the second base plate are respectively connected to the grouting sleeves reserved at the bottom of the upper prefabricated column.

[0036] Furthermore, the first bottom plate of the steel bar positioning device 1 is fixed to the top of the lower prefabricated column, and the reserved steel bars at the top of the lower prefabricated column extend upward after passing through the first steel bar positioning hole of the first bottom plate.

[0037] Furthermore, shear-resistant steel bars are fixed to the lower end of the base plate, and the shear-resistant steel bars extend vertically downward and are fixed in the tops of the prefabricated columns of the lower layer.

[0038] Further, the positioning column is surrounded by four upright inner plates, and the four inner plates are vertically fixed on the first bottom plate and form a rectangle, wherein the first inner plate 121 and the second inner plate 122 of the four inner plates are parallel and spaced apart, the first inner plate and the second inner plate are both rectangular plates, and the height H1 of the first inner plate 121 is higher than the height H2 of the second inner plate 122, the third inner plate and the fourth inner plate of the four inner plates are parallel and spaced apart, the upper end surface of the third inner plate is close to the first inner plate and is provided with a first horizontal plane with a height of H1, and the upper end surface of the third inner plate is close to the first inner plate. A second horizontal plane with a height of H2 is provided on the side near the second inner plate, a first horizontal plane with a height of H1 is provided on the side near the upper end surface of the fourth inner plate near the first inner plate, a second horizontal plane with a height of H2 is provided on the side near the upper end surface of the fourth inner plate near the second inner plate, and a third horizontal plane with a height of H3 is provided on the upper end surface of the fourth inner plate between the first horizontal plane and the second horizontal plane. The height H3 of the third horizontal plane is higher than the height H1 of the first inner plate, and the third horizontal plane is connected to the second horizontal plane via a first vertical plane; the third horizontal plane is connected to the first horizontal plane via a second vertical plane.

[0039] Furthermore, the cross section of the positioning column is square, and a hoisting hole is formed on the positioning column.

[0040] Furthermore, the positioning seat is surrounded by four upright outer plates, which are vertically fixed on the second bottom plate and form a rectangle, and a positioning cavity for the positioning column to be inserted and matched is formed in the middle of the four outer plates; wherein the four outer plates are all rectangular plates.

[0041] Furthermore, a top plate is fixed to the upper ends of the four outer plates, and the height of the four outer plates is greater than the height of the positioning column.

[0042] Furthermore, the cross section of the positioning seat is square.

[0043] The implementation method of the present invention is as follows:

[0044] 1. The lower prefabricated columns have been installed in place. When the upper prefabricated columns are hoisted, they are kept in a vertical state under the action of their own weight. The initial position of the upper prefabricated columns is shown in the hoisting position 1 or hoisting position 2 in the attached figure. If the position is as shown in the hoisting position 2 in the attached figure, it is directly adjusted to the hoisting position 3. If the position relationship is as shown in the hoisting position 1 in the attached figure, it is first adjusted from the hoisting position 1 to the hoisting position 2.

[0045] 2. In the lifting position 1 state, when the upper prefabricated column moves downward, the grouting sleeve positioning device 2 is first limited by the higher left horizontal plane of the steel bar positioning device 1 and cannot continue to move downward. At this time, the upper prefabricated column is translated to the left, and the grouting sleeve positioning device 2 is limited by the first vertical plane of the steel bar positioning device 1 and cannot continue to move to the left. At this time, the position of the upper prefabricated column is as shown in the lifting position 2 in the attached figure.

[0046] 3. In the lifting position 2 state, the upper prefabricated column continues to move downward, and the grouting sleeve positioning device 2 is first limited by the lower right horizontal plane of the steel bar positioning device 1 and cannot continue to move downward. At this time, the upper prefabricated column is translated to the right, and the grouting sleeve positioning device 2 is limited by the left side of the positioning column of the steel bar positioning device 1 and cannot continue to move to the right. At this time, the position of the upper prefabricated column is as shown in the lifting position 3 of the attached figure. At this time, the steel bar positioning device 1 and the grouting sleeve positioning device 2 have achieved center alignment, which means that the reserved steel bars and grouting sleeves of the upper and lower prefabricated columns are also aligned one by one.

[0047] 4. In the lifting position 3 state, the upper prefabricated columns continue to move downward to complete the assembly between the upper prefabricated columns and the lower prefabricated columns, and implement the subsequent casing grouting construction process.

[0048] Note: The number and diameter of the positioning holes of the first bottom plate in the steel bar positioning device 1 should match the number and diameter of the longitudinal steel bars of the prefabricated column. The number and diameter of the positioning holes of the second bottom plate in the grouting sleeve positioning device 2 should match the grouting sleeves that match the longitudinal steel bars of the prefabricated column. The four inner plates in the steel bar positioning device 1 are welded to the first bottom plate. The inner size of the square formed by the four inner plates (minus the wall thickness of the parts) is a+△a (△a is the reserved gap for component assembly, which can be 1-2mm). The four outer plates in the grouting sleeve positioning device 2 are welded to the second bottom plate. The outer size of the square formed by the four outer plates (including the wall thickness of the parts) is a. The bottom of the square formed by the four outer plates is sealed by top plate welding. Before hoisting the component, lubricating oil should be applied between the contact surfaces of the steel bar positioning device 1 and the grouting sleeve positioning device 2 to reduce surface friction and improve the convenience during assembly.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves, characterized in that: The invention comprises a steel bar positioning device (1) for fixing on the top of a lower prefabricated column and a grouting sleeve positioning device (2) for fixing on the bottom of an upper prefabricated column, wherein the steel bar positioning device (1) comprises a first bottom plate, wherein the first bottom plate is provided with a first steel bar positioning hole for allowing a reserved steel bar at the top of the lower prefabricated column to pass through, wherein a positioning column is fixed at the upper end of the first bottom plate, wherein the plane projection of the positioning column is a rectangle, wherein a left horizontal plane is provided on the left side of the upper end surface of the positioning column, and a right horizontal plane is provided on the right side of the upper end surface of the positioning column, wherein the left horizontal plane is higher than the right horizontal plane, and wherein the upper end surface of the positioning column is located between the left horizontal plane and the right horizontal plane. There is a middle horizontal plane, the height of the middle horizontal plane is higher than the left horizontal plane, the middle horizontal plane is connected to the right horizontal plane through the right vertical plane, the grouting sleeve positioning device (2) comprises a second bottom plate, the second bottom plate is provided with a second steel bar positioning hole for passing the reserved steel bars of the top of the lower prefabricated column and a positioning hole for passing the positioning column, the second steel bar positioning holes on the second bottom plate are respectively connected with the grouting sleeves reserved at the bottom of the upper prefabricated column in a one-to-one correspondence, the upper end of the second bottom plate is provided with a positioning seat, the positioning seat is provided with a positioning cavity for gap matching with the positioning column, and the positioning cavity of the positioning seat is connected with the positioning hole on the second bottom plate.

2. The multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves according to claim 1 is characterized in that: The second base plate of the grouting sleeve positioning device (2) is fixed to the bottom of the upper prefabricated column, the positioning seat at the upper end of the second base plate extends into the reserved hole at the bottom of the upper prefabricated column, and the second steel bar positioning holes on the second base plate are respectively connected to the grouting sleeves reserved at the bottom of the upper prefabricated column in a one-to-one correspondence.

3. The multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves according to claim 1 is characterized in that: The first bottom plate of the steel bar positioning device (1) is fixed to the top of the lower prefabricated column, and the reserved steel bars at the top of the lower prefabricated column extend upward after passing through the first steel bar positioning hole of the first bottom plate.

4. The multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves according to claim 1 or 3, characterized in that: The lower end of the bottom plate is fixed with shear-resistant steel bars, which extend vertically downward and are fixed in the tops of the prefabricated columns of the lower layer.

5. The multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves according to claim 1, characterized in that: The positioning column is surrounded by four upright inner plates, and the four inner plates are vertically fixed on the first bottom plate and form a rectangle, wherein the first inner plate of the four inner plates is parallel to and spaced from the second inner plate, the first inner plate and the second inner plate are both rectangular plates, and the height H1 of the first inner plate is higher than the height H2 of the second inner plate, the third inner plate of the four inner plates is parallel to and spaced from the fourth inner plate, a first horizontal plane with a height of H1 is provided on one side of the upper end surface of the third inner plate close to the first inner plate, and the upper end surface of the third inner plate is close to one side of the second inner plate A second horizontal plane with a height of H2 is provided, a first horizontal plane with a height of H1 is provided on the side of the upper end surface of the fourth inner side plate close to the first inner side plate, a second horizontal plane with a height of H2 is provided on the side of the upper end surface of the fourth inner side plate close to the second inner side plate, the upper end surface of the fourth inner side plate is located between the first horizontal plane and the second horizontal plane and a third horizontal plane with a height of H3 is provided, the height H3 of the third horizontal plane is higher than the height H1 of the first inner side plate, the third horizontal plane is connected to the second horizontal plane by a first vertical plane; the third horizontal plane is connected to the first horizontal plane by a second vertical plane.

6. The multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves according to claim 1 or 5, characterized in that: The cross section of the positioning column is square; and a hoisting hole is provided on the positioning column.

7. The multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves according to claim 1, characterized in that: The positioning seat is surrounded by four upright outer plates, which are vertically fixed on the second bottom plate and form a rectangle, and a positioning cavity for the positioning column to be inserted and matched is formed in the middle of the four outer plates; wherein the four outer plates are all rectangular plates.

8. The multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves according to claim 7, characterized in that: A top plate is fixed to the upper ends of the four outer plates, and the height of the four outer plates is greater than the height of the positioning column.

9. The multifunctional auxiliary positioning device for connecting prefabricated column grouting sleeves according to claim 1 or 7, characterized in that: The cross section of the positioning seat is square.

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