Synchronous integral jacking device for heavy steel structure

Abstract

The invention discloses a synchronous integral jacking device for a heavy steel structure, which belongs to the technical field of building construction and comprises a plurality of base mechanisms adaptively assembled on the ground according to a to-be-constructed heavy steel structure, and a jacking mechanism is assembled in the middle of the top end of each base mechanism. A plurality of standard knot supporting mechanisms are assembled at the top end of the base mechanism and located on the outer side of the jacking mechanism, a jacking supporting mechanism is assembled at the top end of the uppermost standard knot supporting mechanism, and the adjacent standard knot supporting mechanisms and the uppermost standard knot supporting mechanism and the jacking supporting mechanism are assembled in a sleeving mode; the connection mode between the jacking supporting mechanism and the uppermost standard knot supporting mechanism and the connection mode between the adjacent standard knot supporting mechanisms are changed into sleeve connection from flange connection, and compared with the prior art, operation can be simplified, and the construction period can be shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a synchronous integral jacking device for a heavy steel structure. Background Art

[0002] Large-span grids or trusses are efficient load-bearing systems used in building structures to achieve ultra-large space coverage. Their core lies in achieving large-span load-bearing through the spatial combination of rods.

[0003] At present, the construction of large-span grids or trusses generally adopts the overall lifting method. This method requires the use of a jacking device. With the help of the power provided by the jacking device, the assembled grids or trusses are accurately lifted to the designed installation height and put into place.

[0004] Chinese patent application No. 202323155081.6 discloses a recyclable jacking support device, including a base, a hydraulic lifting mechanism is arranged on the top of the base, a plurality of superimposed standard section mechanisms are arranged on the outside of the hydraulic lifting mechanism on the top of the base, and a jacking section mechanism is arranged on the top of the standard section mechanism. When the device is jacked, the steel grid is hoisted onto the jacking section mechanism, jacked by the hydraulic lifting mechanism, and the standard section mechanism is installed below, and then jacked and installed again until the steel grid is jacked to the designed height and stopped.

[0005] The above device has the following problems: the top support section mechanism is connected to the uppermost standard section mechanism and the adjacent standard section mechanisms through flanges. The connection structure requires the installation of several screws during installation and the removal of several screws during disassembly, which is cumbersome and prolongs the construction period.

[0006] In view of this, a heavy steel structure synchronous integral jacking device is designed to solve the above problems. Summary of the Invention

[0007] In order to solve the problems raised in the above background technology, the present invention provides a heavy steel structure synchronous integral jacking device, which has the characteristics of simplifying operation and shortening construction period.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a synchronous integral jacking device for heavy steel structures, comprising: a plurality of base mechanisms adapted and assembled on the ground according to the heavy steel structure to be constructed, a jacking mechanism being assembled in the middle of the top of the base mechanism, a plurality of standard section support mechanisms being assembled at the top of the base mechanism located on the outside of the jacking mechanism, a jacking support mechanism being assembled at the top of the topmost standard section support mechanism, and adjacent standard section support mechanisms and the topmost standard section support mechanism and the jacking support mechanism being socketed and assembled.

[0009] Furthermore, the base mechanism includes a cross-shaped lifting base fixed to the concrete surface by bolts, and the four corners of the lifting base are respectively provided with plug-in slots, and the plug-in slots are plugged with plug-ins.

[0010] Furthermore, the standard section support mechanism includes four first columns, wherein the first columns are fixedly connected to first mounting seats on the upper and lower sides of the adjacent two first columns, respectively; a first cross bar is provided between the two first mounting seats at parallel positions on two adjacent first columns; a first oblique bar is provided between the two first mounting seats at diagonal positions on two adjacent first columns, the first cross bar is close to the first mounting seat, and the first oblique bar is away from the first mounting seat; a first pin is connected between the first mounting seat, the first cross bar and the first oblique bar, and a sleeve is sleeved on the top end of the first column;

[0011] The bottom ends of the four first uprights of the lowest standard section support mechanism are fixed to the top of the insert plate by bolts;

[0012] The bottom ends of the four first columns of the other standard section support mechanisms are inserted into the interior of the lower sleeve.

[0013] Furthermore, the jacking mechanism includes a jack fixedly connected to the middle of the top of the jacking base, the output end of the jack is fixedly connected to a jacking seat, and the four corners of the jacking seat are respectively connected to pull rods through pins;

[0014] The bottom end of the tie rod is connected to the jacking support mechanism in the initial stage;

[0015] The bottom end of the pull rod is connected to the first oblique rod, the first cross rod and the first mounting seat through the first pin in the jacking stage.

[0016] Further, the jacking support mechanism includes four second columns, the second columns are fixedly connected to the second mounting seats respectively near the upper and lower side walls of the two adjacent second columns, a third cross bar is provided between the two second mounting seats at parallel positions on two adjacent second columns, a fourth oblique bar is provided between the two second mounting seats at diagonal positions on two adjacent second columns, the third cross bar is close to the second mounting seat, and the fourth oblique bar is away from the second mounting seat, a second pin shaft is connected between the fourth oblique bar, the third cross bar and the second mounting seat, a second bolt ball is fixedly connected to the top end of the second column, a second cross bar is fixed between two adjacent second bolt balls, a second oblique bar is fixed to the top end of the second bolt ball, the four second oblique bars form an umbrella shape, a first bolt ball is fixed at the intersection of the four second oblique bars, four third oblique bars are fixed to the top end of the first bolt ball at equal intervals along the circumferential direction, and the four third oblique bars form an inverted umbrella shape;

[0017] The bottom ends of the four second uprights are fixed to the top of the insert plate by bolts in the initial stage;

[0018] The bottom end of the pull rod is connected to the fourth oblique rod, the third cross rod and the second mounting seat through the second pin in the initial stage;

[0019] The bottom ends of the four second columns are inserted into the lower sleeve during the jacking stage.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention changes the connection mode between the jacking support mechanism and the uppermost standard section support mechanism and the adjacent standard section support mechanisms from flange to sleeve connection, which can simplify the operation and shorten the construction period compared with the existing technology.

[0022] 2. The present invention changes the connection mode between the lowest standard section support mechanism and the base mechanism from bolt connection to plug connection, which can simplify the operation and shorten the construction period compared with the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the present invention;

[0024] Figure 2 It is a top view of the base mechanism of the present invention;

[0025] Figure 3 For the present invention Figure 2 Cross-sectional view in the AA direction;

[0026] Figure 4 This is a front view of the standard section support mechanism of the present invention;

[0027] Figure 5 This is a front view of the jacking mechanism of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the present invention;

[0029] Figure 7 This is a schematic diagram of the cable and measurement control of the present invention;

[0030] In the figure: 1, base mechanism; 101, lifting base; 102, insert plate slot; 103, insert plate;

[0031] 2. Standard section support mechanism; 201. First column; 202. First mounting seat; 203. Sleeve; 204. First crossbar; 205. First diagonal bar; 206. First pin;

[0032] 3. Lifting mechanism; 301. Jack; 302. Top seat; 303. Pull rod;

[0033] 4. Lifting support mechanism; 401. Second column; 402. Second mounting seat; 403. Second crossbar; 404. Second diagonal bar; 405. Third diagonal bar; 406. First bolt ball; 407. Second bolt ball; 408. Third crossbar; 409. Fourth diagonal bar; 410. Second pin shaft. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0035] The present invention provides the following technical solutions: a synchronous integral jacking device for heavy steel structures, comprising: a plurality of base mechanisms 1 adapted and assembled on the ground according to the heavy steel structure to be constructed, a jacking mechanism 3 being assembled in the middle of the top of the base mechanism 1, a plurality of standard section support mechanisms 2 being assembled at the top of the base mechanism 1 and located outside the jacking mechanism 3, a jacking support mechanism 4 being assembled at the top of the topmost standard section support mechanism 2, and adjacent standard section support mechanisms 2 and the topmost standard section support mechanism 2 and the jacking support mechanism 4 being socketed and assembled.

[0036] Specifically, the base mechanism 1 includes a cross-shaped lifting base 101 fixed to a concrete surface by bolts. Four corners of the lifting base 101 are respectively provided with inserting plate slots 102 , and inserting plates 103 are inserted into the inserting plate slots 102 .

[0037] Specifically, the standard section support mechanism 2 includes four first columns 201, and the first columns 201 are fixed with first mounting seats 202 on the upper and lower sides near the side walls of two adjacent first columns 201 respectively. A first cross bar 204 is provided between the two first mounting seats 202 at parallel positions on two adjacent first columns 201, and a first oblique bar 205 is provided between the two first mounting seats 202 at diagonal positions on two adjacent first columns 201. The first cross bar 204 is close to the first mounting seats 202, and the first oblique bar 205 is away from the first mounting seats 202. A first pin 206 is connected between the first mounting seats 202, the first cross bar 204 and the first oblique bar 205, and a sleeve 203 is sleeved on the top of the first column 201;

[0038] The bottom ends of the four first uprights 201 of the lowest standard section support mechanism 2 are fixed to the top of the inserting plate 103 by bolts;

[0039] The bottom ends of the four first columns 201 of the other standard section support mechanisms 2 are inserted into the lower sleeve 203 .

[0040] Specifically, the lifting mechanism 3 includes a jack 301 fixed to the middle of the top of the lifting base 101, the output end of the jack 301 is fixed to a top seat 302, and the four corners of the top seat 302 are connected to pull rods 303 through pins;

[0041] The bottom end of the pull rod 303 is connected to the jacking support mechanism 4 in the initial stage;

[0042] The bottom end of the pull rod 303 is connected to the first oblique rod 205 , the first cross rod 204 and the first mounting seat 202 through the first pin shaft 206 during the jacking stage.

[0043] Specifically, the jacking support mechanism 4 includes four second columns 401, and the second columns 401 are fixed with second mounting seats 402 on the upper and lower sides of the two adjacent second columns 401, respectively. A third cross bar 408 is provided between the two second mounting seats 402 at parallel positions on the two adjacent second columns 401, and a fourth oblique bar 409 is provided between the two second mounting seats 402 at diagonal positions on the two adjacent second columns 401. The third cross bar 408 is close to the second mounting seats 402, the fourth oblique bar 409 is away from the second mounting seats 402, and the fourth oblique bar 409 is provided between the second mounting seats 402 and the third cross bar 408. 09. A second pin 410 is connected between the third crossbar 408 and the second mounting seat 402. A second bolt ball 407 is fixed to the top of the second column 401. A second crossbar 403 is fixed between two adjacent second bolt balls 407. A second oblique rod 404 is fixed to the top of the second bolt ball 407. The four second oblique rods 404 form an umbrella shape. A first bolt ball 406 is fixed at the intersection of the four second oblique rods 404. Four third oblique rods 405 are fixed to the top of the first bolt ball 406 at equal intervals along the circumferential direction. The four third oblique rods 405 form an inverted umbrella shape.

[0044] The bottom ends of the four second uprights 401 are fixed to the top of the inserting plate 103 by bolts in the initial stage;

[0045] The bottom end of the pull rod 303 is connected to the fourth oblique rod 409, the third cross rod 408 and the second mounting seat 402 via the second pin 410 in the initial stage;

[0046] The bottom ends of the four second columns 401 are inserted into the lower sleeve 203 during the jacking stage.

[0047] A jacking method for a heavy steel structure synchronous integral jacking device comprises the following steps:

[0048] Level the site;

[0049] Laying out lines, setting support points for grid or truss assembly and measurement control points;

[0050] According to the coordinates of the layout, concrete is poured on the ground below the jacking base 101 to harden it;

[0051] Install the jacking base 101 on the concrete surface;

[0052] Install the jack 301 in the middle of the jacking base 101;

[0053] The four second columns 401 of the jacking support mechanism 4 are respectively installed on the top of the four plug-in plates 103 by bolts, and the four plug-in plates 103 are respectively inserted into the four plug-in plate slots 102;

[0054] The eight third cross bars 408 of the jacking support mechanism 4 are respectively arranged between two second mounting seats 402 adjacent to the two second uprights 401 and parallel to each other, with the upper and lower third cross bars 408 being parallel;

[0055] The eight fourth oblique rods 409 of the jacking support mechanism 4 are respectively arranged between two second mounting seats 402 at diagonal positions adjacent to the two second upright posts 401, and the two fourth oblique rods 409 cross each other;

[0056] Move the bottom ends of the four pull rods 303 to the positions of the second mounting seats 402 below the four second uprights 401 of the jacking support mechanism 4;

[0057] The fourth oblique rod 409, the third cross rod 408 and the second mounting seat 402 or the pull rod 303, the fourth oblique rod 409, the third cross rod 408 and the second mounting seat 402 are connected through the eight second pins 410 of the jacking support mechanism 4;

[0058] The four second bolt balls 407 of the lifting support mechanism 4 are respectively installed on the top of the four second columns 401, and the four second oblique rods 404 are respectively installed on the four second bolt balls 407. The four second oblique rods 404 form an umbrella shape, and the first bolt ball 406 is installed at the intersection position. The four third oblique rods 405 are installed on the top of the first bolt ball 406 as the nodes of the grid or truss to be lifted;

[0059] Several jacks 301 are connected in series and controlled by a hydraulic pump station controlled by a PLC control system. The extension and retraction of the jacks 301 are controlled by data collected by displacement sensors;

[0060] Assemble the grid or truss and inspect it after completion, checking the size and node connection quality to ensure that they are correct;

[0061] Lift the assembled grid or truss to the node of the grid or truss to be lifted;

[0062] Observe statically to see if the grid or truss has significant deformation after the stress state changes, whether there are cracks or severe deformation at each node, and whether the rods are deformed or twisted;

[0063] If the above conditions exist, reset the grid or truss to repair it, repeat the above lifting and static observation steps until the above conditions no longer exist and prepare for reservation;

[0064] Remove the bolts between the four second columns 401 of the jacking support mechanism 4 and the four inserting plates 103;

[0065] Control the jacks 301 to rise synchronously for one stroke, until the lower chord ball is about 2.5m off the ground. Let it stand for 24 hours, and observe the deformation of the grid or truss again. At the same time, observe whether there is any oil leakage from the jacks 301, observe whether all the jacks 301 are under stress in the working state, and check whether the PLC control system is normal.

[0066] If the above situation exists, control the jack 301 to release the pressure, reset the grid or truss and the jack 301, and repair it. At the same time, repair the PLC control system. Repeat the above jacking and static observation steps until the above situation no longer exists. After multiple parties sign to confirm the inspection results, prepare for formal jacking.

[0067] The four first columns 201 of the standard section support mechanism 2 are respectively installed on the top of the four inserting plates 103 by bolts;

[0068] The eight first crossbars 204 of the standard section support mechanism 2 are respectively arranged between two first mounting seats 202 adjacent to the two first uprights 201 and parallel to each other, with the upper and lower first crossbars 204 being parallel;

[0069] The eight first oblique rods 205 of the standard section support mechanism 2 are respectively arranged between two first mounting seats 202 at diagonal positions adjacent to the two first upright posts 201, and the two first oblique rods 205 cross each other;

[0070] Move the bottom ends of the four pull rods 303 to the positions of the first mounting seats 202 below the four first uprights 201 of the standard section support mechanism 2;

[0071] The first oblique rod 205, the first cross rod 204 and the first mounting seat 202 or the pull rod 303, the first oblique rod 205, the first cross rod 204 and the first mounting seat 202 are connected through the eight first pins 206 of the standard section support mechanism 2;

[0072] Sleeve the four sleeves 203 of the standard section support mechanism 2 onto the tops of the four first columns 201;

[0073] Remove the four second pins 410 of the lifting support mechanism 4 to disengage the four pull rods 303;

[0074] The jack 301 is controlled to release pressure, and the bottom ends of the four second columns 401 of the jacking support mechanism 4 are inserted into the four sleeves 203 of the standard section support mechanism 2, and the force is transmitted to the jacking support mechanism 4 and the standard section support mechanism 2;

[0075] Observe statically to see if the grid or truss has significant deformation after the stress state changes, whether there are cracks or severe deformation at each node, and whether the rods are deformed or twisted;

[0076] If the above situation exists, reset the grid or truss to repair it, and repeat the above lifting and static observation steps until the above situation no longer exists;

[0077] Move the bottom ends of the four pull rods 303 to the positions of the first mounting seats 202 below the four first uprights 201 of the standard section support mechanism 2;

[0078] Connect the pull rod 303, the first diagonal rod 205, the first cross bar 204 and the first mounting seat 202 through the four first pins 206 of the standard section support mechanism 2, and lift again;

[0079] Repeat the above steps and add guy ropes when the jacking reaches 7m, and stop when the jacking reaches the designed height;

[0080] Measure the deflection and geometric dimensions of the grid or truss after it is in place, and make records and assessments;

[0081] Welded connection with surrounding grids or trusses;

[0082] Separate the jack 301 from the lifting support point, release the pressure, and let it stand for 24 hours;

[0083] After the grid or truss is stable, the standard section support mechanism 2 is removed from bottom to top, and then the jacking support mechanism 4 is removed, and the jacking work is completed.

[0084] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A synchronous integral jacking device for heavy steel structures, characterized in that: include: According to the heavy steel structure to be constructed, a plurality of base mechanisms (1) are adapted and assembled on the ground. A jacking mechanism (3) is assembled at the middle of the top of the base mechanism (1). A plurality of standard section support mechanisms (2) are assembled at the top of the base mechanism (1) outside the jacking mechanism (3). A jacking support mechanism (4) is assembled at the top of the top standard section support mechanism (2). Adjacent standard section support mechanisms (2) and the top standard section support mechanism (2) are sleeved and assembled with the jacking support mechanism (4).

2. A heavy steel structure synchronous integral jacking device according to claim 1, characterized in that: The base mechanism (1) comprises a cross-shaped lifting base (101) fixed on a concrete surface by bolts, and the lifting base (101) is provided with inserting plate slots (102) at four corners, and inserting plates (103) are inserted into the inserting plate slots (102).

3. The synchronous integral jacking device for heavy steel structures according to claim 2, characterized in that: The standard section support mechanism (2) comprises four first columns (201), wherein the first columns (201) are fixedly connected with first mounting seats (202) on the upper and lower sides close to the side walls of two adjacent first columns (201), a first cross bar (204) is provided between two first mounting seats (202) at parallel positions on two adjacent first columns (201), a first oblique bar (205) is provided between two first mounting seats (202) at diagonal positions on two adjacent first columns (201), the first cross bar (204) is close to the first mounting seat (202), and the first oblique bar (205) is away from the first mounting seat (202), a first pin shaft (206) is connected between the first mounting seat (202), the first cross bar (204) and the first oblique bar (205), and a sleeve (203) is sleeved on the top end of the first column (201); The bottom ends of the four first uprights (201) of the lowest standard section support mechanism (2) are fixed to the top of the inserting plate (103) by bolts; The bottom ends of the four first upright posts (201) of the other standard section support mechanisms (2) are inserted into the interior of the lower sleeve (203).

4. The synchronous integral jacking device for heavy steel structures according to claim 3, characterized in that: The lifting mechanism (3) includes a jack (301) fixedly connected to the middle of the top of the lifting base (101), the output end of the jack (301) is fixedly connected to a top seat (302), and the four corners of the top seat (302) are respectively connected to pull rods (303) through pins; The bottom end of the pull rod (303) is connected to the jacking support mechanism (4) in the initial stage; The bottom end of the pull rod (303) is connected to the first oblique rod (205), the first cross rod (204) and the first mounting seat (202) through the first pin shaft (206) during the lifting stage.

5. The heavy steel structure synchronous integral jacking device according to claim 4, characterized in that: The lifting support mechanism (4) comprises four second columns (401), wherein the second columns (401) are fixedly connected with second mounting seats (402) on the upper and lower sides close to the side walls of two adjacent second columns (401), a third cross bar (408) is provided between two second mounting seats (402) at parallel positions on two adjacent second columns (401), a fourth oblique bar (409) is provided between two second mounting seats (402) at diagonal positions on two adjacent second columns (401), the third cross bar (408) is close to the second mounting seats (402), the fourth oblique bar (409) is away from the second mounting seats (402), and the fourth oblique bar (409) is provided between the second mounting seats (402). ), a second pin shaft (410) is connected between the third cross bar (408) and the second mounting seat (402), a second bolt ball (407) is fixed to the top of the second column (401), a second cross bar (403) is fixed between two adjacent second bolt balls (407), a second oblique rod (404) is fixed to the top of the second bolt ball (407), the four second oblique rods (404) form an umbrella shape, a first bolt ball (406) is fixed at the intersection of the four second oblique rods (404), four third oblique rods (405) are fixed to the top of the first bolt ball (406) at equal intervals along the circumferential direction, and the four third oblique rods (405) form an inverted umbrella shape; The bottom ends of the four second uprights (401) are fixed to the top of the inserting plate (103) by bolts in the initial stage; In the initial stage, the bottom end of the pull rod (303) is connected to the fourth oblique rod (409), the third cross rod (408) and the second mounting seat (402) through the second pin shaft (410); The bottom ends of the four second uprights (401) are inserted into the interior of the lower sleeve (203) during the jacking stage.

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