Full-sale shaft connecting hanging structure folding construction method

Abstract

The application discloses a full-sale shaft connecting hanging structure folding construction method, comprising the following steps: S1, measuring and laying out a line; S2, ground assembling; a plurality of stand columns are sequentially spliced in the length direction by using a pin shaft, a vertical frame beam and an inclined steel beam are connected on the first stand column, and the first stand column, the vertical frame beam and the inclined steel beam form a right-angled triangle; S3, carrying a truss beam installation; S4, folding lifting; S5, cable-stayed section correction welding; S6, loose hook; S7, overall correction welding. Beneficial effects are that the application can assemble a large number of high-altitude processes, greatly reduces the high-altitude operation of the operator, makes the fire retardant coating be sprayed in advance, avoids the high-altitude operation risk, saves the measure cost, and utilizes hoisting equipment to assist in folding and overturning and hoisting the whole hanging structure, greatly improves the work efficiency, and reduces the safety risk.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of steel structure, in particular to a full pin shaft connecting hanging structure folding construction method. BACKGROUND

[0002] At present, the full pin shaft connecting hanging structure sightseeing elevator is less used, since the pin shaft connection belongs to ideal hinge, the installation process of the rod needs to consider the rotation and stability of the pin shaft, which causes certain difficulty to the on-site installation. In the prior art, tasks involving high-altitude operation are often required, and the elevator components (such as elevator shaft, equipment, pin shaft, etc.) need to be hoisted to different floors or structural positions of the building by a crane or other lifting equipment. These positions are often high, possibly between floors or at the top of the elevator shaft. During installation, a large amount of installation work needs to be carried out at high altitudes, and the overall safety factor is low.

[0003] For comparison, the Chinese utility model patent with publication number CN215444669U discloses an elevator steel frame structure hoisting device, which comprises a first steel frame structure, a second steel frame structure and a locking piece. The first steel frame structure comprises a plurality of first connecting columns, at least one first connecting piece and an ear are arranged on the first connecting column, the first connecting piece is close to one end of the first connecting column, and a lifting rope or a lifting appliance can lift the first steel frame structure through the ear. The second steel frame structure is arranged above the first steel frame structure, the second steel frame structure comprises a plurality of second connecting columns, the second connecting columns correspond to the first connecting columns one by one, the second connecting columns are provided with second connecting pieces, the second connecting pieces correspond to the first connecting pieces, and the first connecting pieces and the second connecting pieces are fixedly connected through the locking piece.

[0004] In the above structure, the elevator inner steel frame structure is installed in a segmented installation manner. When installing each layer of the car, hoisting equipment is still needed to provide support for the steel frame structure, and the hoisting equipment may shake when hoisting the steel frame structure, i.e. a large amount of high-altitude operation is needed for each layer of the steel frame structure when it is unstable, which is low in safety. During the entire elevator installation process, the hoisting equipment is always in use, which is low in overall efficiency, and the hoisting equipment is difficult to arrange flexibly.

[0005] Therefore, it is a problem worth studying to provide a full pin shaft connecting hanging structure folding construction method. SUMMARY

[0006] In order to solve the above-mentioned problems in the prior art, the purpose of the present application is to complete the high-altitude assembly process on the ground, greatly improve the work efficiency, and reduce the safety risk.

[0007] The purpose of the present application is achieved as follows:

[0008] The application provides a folding construction method of a full-sale shaft connecting hanging structure, and comprises the following steps.

[0009] S1: measuring and laying out:

[0010] A horizontal reference line is arranged at each cable-stayed floor, and one or more lofting reference lines are arranged every n meters as vertical reference lines;

[0011] S2: ground assembling:

[0012] On the ground, a plurality of columns are sequentially connected by pins in the length direction, a vertical frame beam and an inclined steel beam are connected to the first column, and the first column, the vertical frame beam and the inclined steel beam form a right triangle, wherein the vertical frame beam is arranged at the movable end of the column and is perpendicular to the column, and a carrying truss beam is arranged on the vertical frame beam;

[0013] The column is rotationally connected with a horizontal steel beam, a steel wire rope is tied at the movable end of each horizontal steel beam, and the movable end of the steel wire rope is connected with the upper column or the inclined steel beam or the vertical frame beam according to the installation position of the horizontal steel beam after being hoisted;

[0014] S3: carrying truss beam assembling:

[0015] The carrying truss beam is provided with a hoisting point and a platform;

[0016] S4: folding hoisting:

[0017] The hoisting point is hoisted by using a hoisting device, and the plurality of columns are lifted in correspondence with the vertical reference lines, until the last column is separated from the ground;

[0018] S5: cable-stayed section correction welding:

[0019] The two end points a# and c# of the inclined steel beam are longitudinally lifted by 5-10 mm, the height of the b# end point is not changed, the two end points of the inclined steel beam are positioned according to the floor reference line, and then are welded and fixed;

[0020] S6: releasing the hook:

[0021] After the connection joints of the inclined steel beam are completely welded, the carrying truss beam is disassembled by using the hoisting device to hoist the hoisting point;

[0022] S7: overall correction welding:

[0023] The c# end point is taken as a base point to make a vertical reference line, the d# end point is corresponded to the vertical reference line, and the horizontal steel beam is fixed.

[0024] In the preferred embodiment, in step S1, n is 20-50 m.

[0025] In the preferred embodiment, in step S2, the cylindrical member is supported at the bottom of the column when the column is connected.

[0026] In the preferred embodiment, in step S2, the wooden block is used as a cushion at the lower part of the column when it is assembled, and the outer wall of the column is wrapped with a flexible fireproof cushion when it is assembled.

[0027] In the preferred embodiment, in step S2, the steel wire rope is connected with not less than 3 U-shaped bolt buckles at each end when it is tied.

[0028] In the preferred embodiment, in step S2, the column has multiple groups, and the multiple groups of columns are connected with transverse connecting beams.

[0029] In the preferred embodiment, the movable end of the steel wire rope on the transverse steel beam is connected with the vertical beam.

[0030] In the preferred embodiment, in step S2, the flat pole truss beam is welded with a lifting lug at the upper part and connected with the vertical steel beam through a few Chinese character connecting piece at the lower part.

[0031] In the preferred embodiment, in step S3, the flat pole truss beam is provided with a connecting hole corresponding to the few Chinese character connecting piece, and the connecting hole is an oblong hole.

[0032] In the preferred embodiment, in step S4, when each column is lifted to the vertical state, the column, the transverse steel beam and the steel wire rope are checked for no abnormalities before continuing to lift.

[0033] Positive beneficial effects:

[0034] (1) The high-altitude assembly process can be completed on the ground, and the overall structure only needs to be connected with the pre-buried structure in the high altitude. After the uppermost column structure is fixed, the lower column can be supported, the whole is more stable during operation, the work efficiency is greatly improved, and the safety risk is reduced.

[0035] (2) The construction method of the present application can easily turn over the component unit with a height of more than 20m on the ground, and the structure can be lifted section by section through the folding lifting method, greatly shortening the construction period.

[0036] (3) The present application can make the fireproof coating be sprayed in advance, avoid the risk of high-altitude operation, and save the measure cost.

[0037] (4) The present application adopts the ground lying assembly mode, improves the installation quality and precision of the structure, and greatly guarantees the safety.

[0038] (5), the present application can be inserted construction, assembled in advance in the prescribed time, reasonable arrangement of hoisting equipment, avoid the cross with other professional, the whole piece of hoisting method novel, safe and fast, at the same time, reduce the idle time of hoisting equipment, optimize the resource allocation and construction process. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 for the implementation process of the present application;

[0040] Figure 2 for the installation of the present application in the ground assembly of the middle pole, pole truss beam, oblique steel beam;

[0041] Figure 3 for the installation of the present application in the ground assembly of the middle pole, pole truss beam, oblique steel beam;

[0042] Figure 4 for the installation of the present application in the ground assembly of the middle pole, pole truss beam, oblique steel beam;

[0043] Figure 5 for the installation of the present application in the ground assembly of the middle pole, pole truss beam, oblique steel beam;

[0044] Figure 6 for the structure of the present application of pole truss beam;

[0045] Figure 7 for the installation of the present application in the ground assembly of the middle pole, pole truss beam, oblique steel beam;

[0046] Figure 8 for the installation of the present application in the ground assembly of the middle pole, pole truss beam, oblique steel beam;

[0047] The reference signs are as follows: pole 1, horizontal steel beam 2, oblique steel beam 3, vertical steel beam 4, pole truss beam 5, pin shaft 6, steel wire rope 7, hoisting steel wire 8, ground 9. DETAILED DESCRIPTION

[0048] The present application is further described below in conjunction with the drawings and examples.

[0049] Referring to Figures 1-8 The present application provides a full pin shaft 6 connecting hanging structure folding construction method, comprising the following steps:

[0050] S1: measurement and line laying:

[0051] Review the steel structure measurement control network, measure the detailed axis and refer to the axis measured by civil engineering, to ensure the uniformity of the axis used by two professionals;

[0052] Recheck the installed embedded part deviation and elevation position, form data, so as to provide basis for the installation of elevator;

[0053] The horizontal reference line is set in advance on each cable-stayed floor, and one or more lofting reference lines are set every n meters as the longitudinal reference;

[0054] Wherein n is 20-50m, preferably n is 50m, and the lofting reference line is selected from a 0.9mm steel wire.

[0055] S2: ground assembly:

[0056] In the selection of the assembly site, the assembly site is selected within the coverage of the tower crane, and the assembly does not affect the normal traffic of the construction road. According to the assembly length and width, a suitable size of the site is selected. The site is horizontally flat, and the longitudinal direction can be a slope or locally have a part of the height difference. When there is a height difference, a fulcrum needs to be set at the node rotation position. At the same time, the assembly site also needs to reserve a walking space for the forklift and other tools.

[0057] Referring to Figures 2-3 As shown in the figure, a plurality of columns are sequentially spliced along the length direction on the ground 9 by using the pin shaft 6. When the columns are spliced, the bottom surface can be padded with a wooden square. Before splicing, fireproof paint can be sprayed, and the column can be wrapped with a flexible fireproof pad to prevent the paint from being damaged during assembly.

[0058] The vertical girder and the inclined steel beam 3 are connected on the first column. The first column, the vertical girder and the inclined steel beam 3 form a right triangle. The vertical girder is located at the movable end of the column and is arranged perpendicularly to the column. The vertical girder is provided with a shoulder pole truss beam 5.

[0059] The horizontal steel beam 2 is rotatably connected to the column. The steel wire rope 7 is tied at the movable end of each horizontal steel beam 2. According to the installation position of the horizontal steel beam 2 after hoisting, the movable end of the steel wire rope 7 is connected with the upper column 1 or the inclined steel beam 3 or the vertical girder.

[0060] When connecting the column, the vertical girder, the inclined steel beam 3 and other related components, in order to ensure that the gap between the ear plate of the column and the connecting piece is not greater than 1mm, a ring-shaped pad is symmetrically added between the ear plates. The thickness is determined according to the gap between the ear plates. The pad within 5mm is purchased as a finished product. The pad greater than 5mm is made of steel plate and painted with anti-rust paint. When installing the pin shaft 6, the pin shaft 6 is punched with a punch of the same diameter. The pin shaft 6 punch and the pin shaft 6 are connected together by bolts. The back is gently knocked with a rubber hammer. The ring-shaped pad is placed while knocking, which improves the efficiency of the punching.

[0061] Further, the column has a plurality of groups, and the plurality of columns are connected by a horizontal connecting beam.

[0062] Preferably, the transverse steel beam 2 and the transverse connecting beam adopt a sleeve structure, that is, the structure of the transverse steel beam 2 and the transverse connecting beam is composed of two sections, one end of the opposite ends of the two sections is a sleeve, and the other end is a screw rod, a rod-shaped connecting structure is formed by the threaded connection of the sleeve and the screw rod, and the length can be adjusted by adjusting the length of the sleeve screw during size checking, so as to ensure the transverse distance size.

[0063] In another embodiment, a cylindrical member is supported at the bottom of the column before the column is installed and connected, so that the column can be moved during hoisting of the device.

[0064] Referring to Figure 4 As shown in the figure, after the assembly inspection and acceptance, in order to ensure the in-situ installation of the transverse steel beam 2, the transverse steel beam 2 is connected with the upper vertical column 1 or the inclined steel beam 3 by a steel wire rope 7, the length of the steel wire rope 7 is calculated according to the position of the transverse steel beam 2 after installation, and each end is connected by not less than three U-shaped bolt buckles.

[0065] S3: installation of the pole truss beam:

[0066] The pole truss beam 5 is composed of two or more parallel rod structures during production, a plurality of rod members are connected between the parallel rod structures to form the pole truss beam 5, a lifting lug hoisting point is arranged at the upper part of the pole truss beam 5, and a connecting hole is arranged at the lower part, and the connecting hole can be connected with the character-shaped connecting piece through a bolt;

[0067] Specifically, H-shaped steel, lifting lugs, and character-shaped hanging plates are prepared in advance, and blanking, assembly, and welding are completed. The pole is 6 / 14.3m long and 1.5m wide, and is a planar truss structure. The cross section adopts HW200*200, and the material is Q235B. The lifting lug is welded at the upper part of the pole truss beam 5, and the lower part is connected with the vertical steel beam 4 through the character-shaped connecting piece.

[0068] Referring to Figure 6 As shown in the figure, so as to be connected with the vertical truss beam through the character-shaped connecting piece, the connecting hole is an oblong hole, which is convenient for corresponding connection with the hole on the character-shaped connecting piece, a platform is arranged on the upper surface of the pole truss beam 5 to facilitate personnel operation, and after hoisting, the inclined steel beam 3 and the vertical truss beam can be conveniently welded and fixed.

[0069] The pole truss beam 5 is installed by using a tower crane or other lifting equipment. There are four hoisting points on the pole truss beam 5. The size of the lifting lug and the diameter of the hoisting steel wire 8 are calculated according to the hoisting weight. For uneven gravity center, a hand-operated hoist corresponding to the rated weight is used for adjustment to make the structure stable.

[0070] When connecting the spreader truss beam 5 and the vertical beam, use "U"-shaped connectors to fix them securely, ensuring the bolts are tightened firmly with at least 2 strands of bolt exposed. Calculate the adjustment length of the hand-operated hoist based on the length of the hoisting wire 8 and the position of the center of gravity, ensuring the length meets the balance requirements before hoisting.

[0071] S4: Folding lifting mechanism:

[0072] See Figure 7 As shown, after the assembly dimensions have passed inspection and safety measures have been checked, lifting begins. During lifting, the hook is raised slowly, and the boom is slightly rotated in coordination with the trolley. The lifting equipment is used to lift the lifting point, allowing the first section to rise slowly. After checking the members and wire ropes (7) for any abnormalities, lifting continues, section by section, aligning each column with the longitudinal reference point, until the last section is lifted off the ground (9). Note that the trolley and boom must be moved in real-time according to the assembly position. After each column section is lifted off the ground (9), it should remain stationary for 2-5 minutes before slowly resuming lifting.

[0073] S5: Straightening welding of the inclined section:

[0074] Based on the characteristics of the suspension structure system, fixing the inclined tie section first can meet the requirements for hook release, thereby reducing the tower crane's usage time and improving work efficiency.

[0075] See Figure 8 As shown, during installation, raise points a# and c# by 5-10mm, while keeping the coordinates of point b# unchanged. After positioning and fixing points a# and b# according to the floor reference point, straighten point 4# using a chain hoist to ensure that the verticality meets the requirements. After positioning the two ends of the inclined steel beam 3, weld and fix them, that is, perform welding operations on points a# and c#. Note that before welding is completed, the hoisting steel wire 8 must be under stress.

[0076] S6: Loosen hook:

[0077] After all the connecting joints of the inclined steel beam 3 are welded, the Z-shaped connecting parts on the spreader truss beam 5 are removed, and the lifting point of the lifting equipment is used to dismantle the spreader truss beam 5.

[0078] Specifically, after all the connecting joints of the cable-stayed section are welded, the hooks are slowly released until the hoisting steel wire 8 is no longer under stress. During the process, the structure is observed for any abnormalities or deformations. After confirming that everything is correct, the connecting bolts are unscrewed, the steel wire is placed in the tool bag, and the flat beam truss beam 5 is dismantled using a tower crane and used for the installation of the next set of suspended structures.

[0079] S7: Overall straightening welding:

[0080] See Figure 8As shown, the d# end point is straightened with a chain, a vertical reference is made based on the c# end point, and the verticality of c#-d# is ensured to meet the requirements; then, the remaining each beam is fixed one by one. Note that considering the shrinkage deformation after welding, the verticality deviation between c# and d# points deviates to the outside.

[0081] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A full-sale shaft connecting hanging structure folding construction method, characterized in that, The method comprises the following steps: S1: measuring the wire: Set a horizontal reference line on each cable-stayed floor, and set one or more lofting reference lines as vertical references every n meters; S2: ground assembly: On the ground, multiple columns are sequentially connected by pin shafts in the length direction, a vertical frame and an inclined steel beam are connected to the first column, and the first column, the vertical frame and the inclined steel beam form a right triangle, wherein the vertical frame is arranged perpendicularly to the column at the movable end of the column, and a horizontal truss beam is arranged on the vertical frame; A horizontal steel beam is rotatably connected to the column, a steel wire rope is tied at the movable end of each horizontal steel beam, and the movable end of the steel wire rope is connected to the upper stand or the inclined steel beam or the vertical frame according to the installation position of the horizontal steel beam after being lifted; S3: horizontal truss beam installation: A lifting point and a platform are arranged on the horizontal truss beam; S4: folding lifting: Using a lifting device to lift the lifting point, the multiple columns are lifted in sections corresponding to the vertical references until the last column is separated from the ground; S5: cable-stayed section correction welding, the columns have multiple groups, and the multiple groups of columns are connected by horizontal connecting beams; S6: loose hook: After the connection joints of the inclined steel beam are completely welded, the horizontal truss beam is disassembled by using a lifting device to lift the lifting point; S7: overall correction welding.

2. The method according to claim 1, wherein the full-sale connection hanging structure is folded. In step S1, n is 20-50m.

3. A method of erecting a full-sale connection hanging structure according to claim 1 or 2, wherein In step S2, when the columns are connected, a cylindrical member is supported at the bottom of the column.

4. The method according to claim 1 or 2, wherein In step S2, when assembling, wooden boards are used for padding under the column, and flexible fireproof padding is wrapped around the outer wall of the column during assembly.

5. The method of claim 4, wherein the method further comprises: In step S2, when the steel wire rope is tied, no less than three U-shaped bolt buckle connections are provided at each end.

6. The method of claim 1, wherein the method further comprises: The movable end of the steel wire rope on the horizontal steel beam is connected to the vertical frame.

7. The method of claim 1, wherein the method further comprises: In step S2, lifting lugs are welded to the upper part of the horizontal truss beam, and the lower part is connected to the vertical steel beam through a few Chinese character connecting pieces.

8. The method of claim 1, wherein the method further comprises: In step S3, the horizontal truss beam is provided with a connecting hole corresponding to the few Chinese character connecting pieces, and the connecting hole is a long circular hole.

9. The method of claim 1, wherein the method further comprises: In step S4, when each column is lifted to a vertical state, the column, the horizontal steel beam and the steel wire rope are checked for abnormalities before continuing to lift.

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