An integrated prefabricated pier column installation and adjustment cast-in-place device and construction method

Abstract

The present invention provides an integrated prefabricated pier column installation and adjustment cast-in-place device and construction method, the device includes four groups of installation and positioning mechanisms and template systems arranged on the four sides of the prefabricated pier column, the installation and positioning mechanism includes a base and an adjustment mechanism, the base includes a base crossbeam and a base longitudinal beam, the adjustment mechanism includes a vertical support, an oblique support and a fixed crossbeam, the fixed crossbeam is arranged near the side of the prefabricated pier column, the vertical support is vertically arranged between the fixed crossbeam and the base longitudinal beam, the oblique support is arranged between the base crossbeam and the fixed crossbeam, the template system includes a template, a slider, a movable crossbeam and a movable adjustment hydraulic rod, the slider is buckled on the base longitudinal beam, the movable crossbeam is connected to the slider, the movable crossbeam is perpendicular to the base longitudinal beam, the movable adjustment hydraulic rod is connected to the movable crossbeam and the base longitudinal beam, and the template is arranged on the movable crossbeam. The present invention takes into account both safety and economy, enhances construction convenience, and improves construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to an integrated prefabricated pier column installation and adjustment cast-in-place device and a construction method. Background Art

[0002] Prefabricated piers are prefabricated in factories, with short construction time on site, reduced occupation of site space, accelerated construction progress, and improved construction efficiency. Therefore, they are widely used in urban bridge construction. When prefabricated piers are installed on site, the adjustment of the plane position and elevation of the prefabricated piers mainly depends on the crane lifting and adjustment. The prefabricated piers are usually lifted by large lifting equipment and installed at the designed predetermined position on the top surface of the pier. During the installation and positioning of the prefabricated piers, the large lifting equipment will continue to work until the prefabricated piers are installed in place and accurately positioned. It is extremely inconvenient to adjust, and the construction quality is difficult to guarantee. The crane needs to cooperate all the time before the joint steel bars are connected and the piers are adjusted. The crane takes a long time and has a low utilization rate.

[0003] In the patent document with publication number CN202000251U, a connection method between a precast concrete column and a cap is disclosed. The connection method is: firstly, a groove is reserved on the cap, and then the precast concrete pier column is directly embedded in the groove. The patent does not involve the installation and positioning of the precast concrete pier column.

[0004] In the patent document with publication number CN102808375A, a hinged connection method between a portal steel frame and a cap is disclosed. The invention mainly provides a movable hinge support between the prefabricated steel column bottom plate and the cap plate. The movable hinge support has a simple structure, is easy to make, and can effectively transmit the internal force and deformation generated by the load. The patent also does not involve the installation and positioning of the prefabricated steel pier.

[0005] In the patent document with publication number CN104294753A, a connection method and construction method of a precast concrete hollow pier column and a cap are disclosed. The connection method is: firstly, a trapezoidal groove with a larger top and a smaller bottom is reserved on the top surface of the cap, and after the precast concrete hollow pier column is installed in place, it is temporarily positioned by bolts on the embedded parts, and then the reserved vertical prestressed steel bars and transverse prestressed steel bars are tensioned to connect the precast concrete hollow pier column and the cap as a whole.

[0006] In the patent document with publication number CN105442433A, a connection method of a prefabricated hollow bridge pier and a cap is disclosed. The connection method is: first, a cup mouth that can be embedded in the prefabricated hollow pier column is pre-set on the top surface of the cap, the prefabricated hollow pier column is embedded in the cup mouth, and the lower part is sleeved on the positioning pier on the top surface of the cap. At the same time, the shear member set on the surface of the prefabricated hollow pier body extends into the cup mouth, thereby forming a connection between the prefabricated hollow pier column and the cap. In this connection method, the prefabricated hollow pier column is positioned by the positioning pier set on the upper part of the cap, and the inner diameter of the prefabricated hollow pier is slightly larger than the outer diameter of the positioning pier, so that the prefabricated hollow pier can be smoothly placed in the cup mouth of the cap. Although the positioning pier can play a positioning role, it is still very difficult to accurately position the prefabricated hollow pier.

[0007] In summary, the existing technologies all require repeated adjustment of the verticality of the prefabricated piers, which cannot be accurately positioned and affects the construction efficiency. Summary of the invention

[0008] The present invention provides an integrated prefabricated pier column installation and adjustment cast-in-place device and a construction method, which can take into account both safety and economy, is of great significance for the installation and construction of prefabricated pier columns, speeds up the construction speed, and reduces the occupation of machinery.

[0009] The technical scheme of the present invention is: an integrated prefabricated pier column installation and adjustment cast-in-place device, comprising four groups of installation and positioning mechanisms and template systems arranged on four sides of the prefabricated pier column, the installation and positioning mechanism comprising a base and an adjustment mechanism, the base comprising a base crossbeam and a base longitudinal beam, the base longitudinal beam being arranged at both ends of each side of the prefabricated pier column and being perpendicular to the side, the base crossbeam being arranged at the tail end of the base longitudinal beam away from the side of the prefabricated pier column and being perpendicular to the base longitudinal beam, the adjustment mechanism comprising a vertical support, an oblique support and a fixed crossbeam, the fixed crossbeam being arranged near the side of the prefabricated pier column, the vertical support being arranged vertically between the fixed crossbeam and the base longitudinal beam, the oblique support being arranged between the base crossbeam and the fixed crossbeam, the template system comprising a template, a slider, a movable crossbeam and a movable adjustment hydraulic rod, the slider being buckled on the base longitudinal beam, the movable crossbeam being fixedly connected to the slider, the movable crossbeam being perpendicular to the base longitudinal beam, one end of the movable adjustment hydraulic rod being connected to the movable crossbeam, and the other end being connected to the base longitudinal beam, the template being arranged on the movable crossbeam, and the template being located on the side of the prefabricated pier column and having a gap therebetween.

[0010] According to a further solution, the number of the fixed cross beams, the base longitudinal beams, the base cross beams, and the vertical braces of each group of the installation and positioning mechanism is 2, and the diagonal braces are arranged in two rows.

[0011] In a further solution, at least three columns are arranged in each row of the diagonal braces disposed on the long sides of the prefabricated pier columns, and at least two columns are arranged in each row of the diagonal braces disposed on the short sides of the prefabricated pier columns.

[0012] According to a further solution, four columns are arranged in each row of the diagonal braces arranged on the long sides of the prefabricated pier columns.

[0013] In a further solution, the fixed crossbeams are arranged in parallel along the vertical direction, and a plurality of mounting holes are evenly arranged on the fixed crossbeams located below, and reserved holes are arranged at corresponding positions of the prefabricated piers, and fixing rods are passed through the mounting holes and the reserved holes, so that the entire device is connected to the prefabricated piers as a whole, thereby improving stability and reliability. In a further solution, the two ends of the vertical brace are respectively connected to the base longitudinal beam and the fixed crossbeam through a movable hinge II, and the diagonal brace is connected to the base crossbeam and the fixed crossbeam through a movable hinge II. In a further solution, the two ends of the movable adjustment hydraulic rod are respectively connected to the movable crossbeam and the base longitudinal beam through a movable hinge III.

[0014] According to a further solution, the vertical brace and the diagonal brace each include a movable rod disposed at both ends, an extension rod disposed in the middle, and a telescopic hydraulic rod disposed on the movable rod, and both ends of the telescopic hydraulic rod are respectively connected to the movable rods at both ends through a movable hinge I.

[0015] In a further solution, the cross-sectional dimension of the movable rod is greater than the cross-sectional dimension of the extension rod, and the extension rod is sleeved in the movable rod.

[0016] In a further solution, a slot is provided inside the movable rod to fix the position of the extension rod.

[0017] The scheme further comprises that the movable hinge I, movable hinge II and movable hinge III each comprise clamping plates arranged on both sides, a rotating plate arranged in the middle and a latch connecting the rotating plate and the clamping plates; the other end of the rotating plate is connected to the vertical support, the diagonal support, the movable adjustment hydraulic rod and the telescopic hydraulic rod; the clamping plates are fixed on the base longitudinal beam, the base cross beam, the fixed cross beam, the movable cross beam and the movable rod.

[0018] On the other hand, the present invention provides an integrated prefabricated pier column installation and adjustment cast-in-place construction method, the steps of which are

[0019] include:

[0020] 1. According to the installation position of the prefabricated pier, four sets of installation positioning mechanisms and template systems are respectively arranged on the sides of the prefabricated pier, leaving gaps;

[0021] 2. Use a crane to lift and drop the prefabricated pier column to the preset position, insert the fixing rod into the installation hole of the fixed beam and the reserved hole of the prefabricated pier column, and when the temporary support at the bottom of the prefabricated pier column falls on the pedestal, use the telescopic hydraulic rod to adjust the diagonal brace and vertical brace to adjust the elevation and plane position of the prefabricated pier column. After meeting the requirements, fix the telescopic hydraulic rod, fix the diagonal brace and vertical brace, and release the prefabricated pier column by the crane, and the workers carry out the connection of steel bars and other construction;

[0022] 3. After the steel bar connection is completed, operate the movable and adjustable hydraulic rod of the formwork system to move the formwork to the predetermined position, fix the movable and adjustable hydraulic rod to cast the cast-in-place section concrete, and after the cast-in-place section concrete reaches the designed strength, retract all the movable and adjustable hydraulic rods and telescopic hydraulic rods to separate the entire device from the prefabricated pier column, and the installation of the prefabricated pier column is completed.

[0023] The advantages of the present invention are as follows: the present invention can take into account both safety and economy, is of great significance for the installation and construction of prefabricated piers, speeds up the construction speed, and reduces the occupation of machinery; and the present invention can be disassembled and retracted through movable connections, which facilitates the transportation and installation of various components, further enhances the convenience of construction, and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a schematic diagram of the three-dimensional structure of an integrated prefabricated pier column installation and adjustment cast-in-place device according to the present invention;

[0025] FIG2 is a front view of an integrated prefabricated pier column installation and adjustment cast-in-place device according to the present invention;

[0026] FIG3 is a left side view of an integrated prefabricated pier column installation and adjustment cast-in-place device according to the present invention;

[0027] FIG4 is an enlarged schematic diagram of the A in FIG2 of an integrated prefabricated pier column installation and adjustment cast-in-place device of the present invention;

[0028] FIG5 is a schematic diagram of a slider structure of an integrated prefabricated pier column installation and adjustment cast-in-place device according to the present invention;

[0029] FIG6 is a schematic diagram of the diagonal brace and vertical brace structure of an integrated prefabricated pier column installation and adjustment cast-in-place device according to the present invention;

[0030] FIG7 is a schematic diagram of a movable hinge structure of an integrated prefabricated pier column installation and adjustment cast-in-place device according to the present invention;

[0031] Among them: 1. Prefabricated pier, 2. Installation and positioning mechanism, 3. Formwork system, 4. Fixed rod, 5. Fixed beam, 6. Active hinge I, 7. Telescopic hydraulic rod, 8. Diagonal brace, 9. Active hinge II, 10. Base longitudinal beam, 11. Base cross beam, 12. Formwork, 13. Slider, 14. Active beam, 15. Mobile and adjustable hydraulic rod, 16. Active hinge III, 17. Vertical brace, 18. Active rod, 19. Extension rod, 20. Clamp, 21. Latch, 22. Rotating plate. DETAILED DESCRIPTION

[0032] The present invention is described clearly and completely below in conjunction with the accompanying drawings so that those skilled in the art can fully implement the present invention without having to make any creative work.

[0033] The specific implementation of the present invention is as follows: As shown in FIGS. 1-7 , an integrated prefabricated pier column installation and adjustment cast-in-place device comprises four sets of installation and positioning mechanisms 2 and a template system 3 arranged on four sides of a prefabricated pier column 1.

[0034] The installation and positioning mechanism 2 includes a base and an adjustment mechanism. The base includes a base cross beam 11 and a base longitudinal beam 10. The base longitudinal beam 10 is arranged at both ends of each side of the prefabricated pier 1 and is perpendicular to the side. The base cross beam 11 is arranged at the tail end of the base longitudinal beam 10 away from the side of the prefabricated pier 1 and is perpendicular to the base longitudinal beam 10. The adjustment mechanism includes a vertical support 17, a diagonal support 8 and a fixed cross beam 5. The fixed cross beam 5 is arranged near the side of the prefabricated pier 1. The vertical support 17 is vertically arranged between the fixed cross beam 5 and the base longitudinal beam 10.

[0035] The diagonal brace 8 is arranged between the base crossbeam 11 and the fixed crossbeam 5. The formwork system 3 includes a formwork 12, a slider 13, a movable crossbeam 14 and a movable adjustment hydraulic rod 15. The slider 13 is formed by bending a steel plate at both ends and is inverted on the base longitudinal beam 10. The movable crossbeam 14 is fixedly connected to the slider 13. The movable crossbeam 14 is perpendicular to the base longitudinal beam 10. One end of the movable adjustment hydraulic rod 15 is connected to the movable crossbeam 14, and the other end is connected to the base longitudinal beam 10. The formwork 12 is arranged on the movable crossbeam 14. The slider 13 moves to drive the movable crossbeam 14 and thus drives the formwork 12 to move. The formwork 12 is located on the side of the prefabricated pier and is provided with a gap therebetween. The gap of nearly 1m is the cast-in-place part. When the steel bars are connected, the formwork 12 slides outward to provide a working space for the workers to operate. After adjustment, it slides to the side of the prefabricated pier. After the formwork 12 is fixed, concrete can be cast-in-place.

[0036] In the present invention, the number of the fixed cross beam 5 , the base longitudinal beam 10 , the base cross beam 11 , and the vertical brace 17 of each group of the installation and positioning mechanism 2 is 2, and the diagonal braces 8 are arranged in two rows.

[0037] The present invention further provides that at least three columns are arranged in each row of the diagonal braces 8 on the long side of the prefabricated pier 1, and at least two columns are arranged in each row of the diagonal braces 8 on the short side of the prefabricated pier 1. When the prefabricated pier 1 has a square cross-section, the same number of diagonal braces 8 on each side is provided as required, without distinguishing between the short side and the long side.

[0038] In the present invention, four columns are arranged in each row of the diagonal braces 8 arranged on the long sides of the prefabricated pier column 1 .

[0039] The present invention further comprises that the fixed beams 5 are arranged in parallel along the vertical direction, and a plurality of mounting holes are evenly arranged on the fixed beams 5 located below, and reserved holes are arranged at corresponding positions of the prefabricated pier columns 1, and fixing rods 4 are passed through the mounting holes and the reserved holes, so that the entire device is connected to the prefabricated pier columns 1 as a whole, thereby improving stability and reliability.

[0040] In the present invention, both ends of the vertical support 17 are respectively connected to the base longitudinal beam 10 and the fixed beam 5 through a movable hinge II9, and both ends of the diagonal support 8 are respectively connected to the base beam 11 and the fixed beam 5 through a movable hinge II9.

[0041] In the present invention, two ends of the movable adjustment hydraulic rod 15 are respectively connected to the movable cross beam 14 and the base longitudinal beam 10 through a movable hinge III 16 .

[0042] In the present invention, the vertical support 17 and the diagonal support 8 each include a movable rod 18 at both ends, an extension rod 19 in the middle, and a telescopic hydraulic rod 7 on the movable rod 18 , and both ends of the telescopic hydraulic rod 7 are connected to the movable rod 18 at both ends through a movable hinge Ⅰ6 .

[0043] In the present invention, the cross-sectional dimension of the movable rod 18 is greater than the cross-sectional dimension of the extension rod 19 , and the extension rod 19 is sleeved in the movable rod 18 .

[0044] In the present invention, a slot is provided inside the movable rod 18 to fix the position of the extension rod 19 .

[0045] The present invention further comprises: movable hinges I6, II9 and III16 each comprising a clamping plate 20 arranged on both sides, a rotating plate 22 arranged in the middle, and a latch 21 connecting the rotating plate 22 and the clamping plate 20; the other end of the rotating plate 22 is connected to the vertical support 17, the diagonal support 8, the movable adjustment hydraulic rod 15 and the telescopic hydraulic rod 7; the clamping plate 20 is fixed to the base longitudinal beam 10, the base cross beam 11, the fixed cross beam 5, the movable cross beam 14 and the movable rod 18, driving the rotation of each component; after each movable hinge is disassembled, the diagonal support 8 and the vertical support 17 can be folded for easy transportation.

[0046] On the other hand, the present invention provides an integrated prefabricated pier column installation and adjustment cast-in-place construction method, the steps of which are

[0047] include:

[0048] 1. According to the installation position of the prefabricated pier 1, four sets of installation positioning mechanisms 2 and formwork systems 3 are respectively arranged on the sides of the prefabricated pier 1, and gaps are left as construction gaps;

[0049] 2. Use a crane to lift the prefabricated pier 1 and drop it to the preset position, and insert the fixing rod 4 into the fixed beam.

[0050] 5 and the reserved hole of the prefabricated pier 1. When the temporary support at the bottom of the prefabricated pier 1 falls on the cap, the telescopic hydraulic rod 7 is used to adjust the diagonal brace 8 and the vertical brace 17 to adjust the elevation and plane position of the prefabricated pier 1. After meeting the requirements, the telescopic hydraulic rod 7 is fixed, the diagonal brace 8 and the vertical brace 17 are fixed, the crane releases the prefabricated pier 1, and the workers carry out the connection of the steel bars and other construction;

[0051] 3. After the steel bar connection is completed, operate the movable and adjustable hydraulic rod 15 of the formwork system 3 to move the formwork 12 to the predetermined position, fix the movable and adjustable hydraulic rod 15 to pour the cast-in-place section concrete, and after the cast-in-place section concrete reaches the designed strength, retract all the movable and adjustable hydraulic rods 15 and the telescopic hydraulic rod 7 to separate the entire device from the prefabricated pier 1, and the installation of the prefabricated pier 1 is completed.

[0052] The preferred embodiments of the present invention are described above. It should be pointed out that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any simple modifications, equivalent changes and modifications made to the above embodiments by any technician familiar with the art based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An integrated prefabricated pier column installation and adjustment cast-in-place device, characterized in that: The invention comprises four groups of installation and positioning mechanisms and template systems arranged on four sides of the prefabricated pier column, the installation and positioning mechanisms comprise a base and an adjustment mechanism, the base comprises a base crossbeam and a base longitudinal beam, the base longitudinal beam is arranged at both ends of each side of the prefabricated pier column and is perpendicular to the side, the base crossbeam is arranged at the tail end of the base longitudinal beam away from the side of the prefabricated pier column and is perpendicular to the base longitudinal beam, the adjustment mechanism comprises a vertical support, an oblique support and a fixed crossbeam, the fixed crossbeam is arranged near the side of the prefabricated pier column, the vertical support is vertically arranged between the fixed crossbeam and the base longitudinal beam, the oblique support is arranged between the base crossbeam and the fixed crossbeam, the template system comprises a template, a slider, a movable crossbeam and a movable adjustment hydraulic rod, the slider is inverted on the base longitudinal beam, the movable crossbeam is fixedly connected to the slider, the movable crossbeam is perpendicular to the base longitudinal beam, one end of the movable adjustment hydraulic rod is connected to the movable crossbeam, and the other end is connected to the base longitudinal beam, the template is arranged on the movable crossbeam, and the template is located at the side of the prefabricated pier column and has a gap therebetween; The fixed crossbeams are arranged in parallel along the vertical direction, and a plurality of mounting holes are evenly arranged on the fixed crossbeams located below. Pre-set holes are arranged at corresponding positions of the prefabricated piers. Fixing rods are passed through the mounting holes and the pre-set holes to connect the entire device with the prefabricated piers as a whole, thereby improving stability and reliability; the two ends of the vertical brace are respectively connected to the base longitudinal beam and the fixed crossbeam through movable hinges II, and the diagonal brace is connected to the base crossbeam and the fixed crossbeam through movable hinges II; the two ends of the movable adjustment hydraulic rod are respectively connected to the movable crossbeam and the base longitudinal beam through movable hinges III; The vertical brace and the diagonal brace both include movable rods arranged at both ends, an extension rod arranged in the middle, and a telescopic hydraulic rod arranged on the movable rod. The two ends of the telescopic hydraulic rod are respectively connected to the movable rods at both ends through a movable hinge I; the movable hinge I, movable hinge II, and movable hinge III all include clamping plates arranged on both sides, a rotating plate arranged in the middle, and a pin connecting the rotating plate and the clamping plate. The other end of the rotating plate is connected to the vertical brace, the diagonal brace, the movable adjustment hydraulic rod, and the telescopic hydraulic rod. The clamping plate is fixed on the base longitudinal beam, the base cross beam, the fixed cross beam, the movable cross beam, and the movable rod.

2. The integrated prefabricated pier column installation and adjustment cast-in-place device according to claim 1, characterized in that: The number of fixed crossbeams, base longitudinal beams, base crossbeams and vertical braces of each group of the installation and positioning mechanism is 2, and the diagonal braces are arranged in two rows. Each row of the diagonal braces arranged on the long side of the prefabricated pier column is arranged with at least 3 columns, and each row of the diagonal braces arranged on the short side of the prefabricated pier column is arranged with at least 2 columns.

3. The one-piece prefabricated pier column installation and adjustment cast-in-place device according to claim 2, characterized in that: Each row of the diagonal braces arranged on the long sides of the prefabricated pier columns is provided with 4 columns.

4. The integrated prefabricated pier column installation and adjustment cast-in-place device according to claim 3, characterized in that: The cross-sectional dimension of the movable rod is greater than the cross-sectional dimension of the extension rod, and the extension rod is sleeved in the movable rod.

5. The one-piece prefabricated pier column installation and adjustment cast-in-place device according to claim 4, characterized in that: A clamping slot is arranged inside the movable rod to clamp and fix the position of the extension rod.

6. A method for installing and adjusting cast-in-place construction of an integrated prefabricated pier column using the device of claim 5, the steps comprising: 1) According to the installation position of the prefabricated pier, four sets of installation positioning mechanisms and template systems are respectively arranged on the sides of the prefabricated pier, leaving gaps; 2) Use a crane to lift and drop the prefabricated pier column to the preset position, insert the fixing rod into the installation hole of the fixed beam and the reserved hole of the prefabricated pier column, and when the temporary support at the bottom of the prefabricated pier column falls on the pedestal, use the telescopic hydraulic rod to adjust the diagonal brace and vertical brace to adjust the elevation and plane position of the prefabricated pier column. After meeting the requirements, fix the telescopic hydraulic rod, fix the diagonal brace and vertical brace, and release the prefabricated pier column by the crane, and the workers carry out the connection construction of the steel bars; 3) After the steel bar connection is completed, operate the movable and adjustable hydraulic rod of the formwork system to move the formwork to the predetermined position, fix the movable and adjustable hydraulic rod to cast the cast-in-place section concrete, and after the cast-in-place section concrete reaches the designed strength, retract all the movable and adjustable hydraulic rods and the telescopic hydraulic rods to separate the entire device from the prefabricated pier column, and the installation of the prefabricated pier column is completed.

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