Pillared box-shaped steel frame landscape ribbon installation method

Abstract

The present application relates to a kind of column bracing box-shaped steel frame landscape ribbon installation method, comprising the following steps: column embedded part embedding, column embedded part embedding, jack installation in place, with hole support plate processing installation, rotatable hinged support installation, rotatable winch installation, one side hinged support rod installation, the other side hinged support rod installation, jack, winch removal, adjacent box-shaped steel frame unit installation, box-shaped connection steel frame welding completes installation work;Compared with traditional construction installation method, the present application can realize the accurate adjustment of angle and height of landscape ribbon in installation process by the developed liftable with hole support plate and rotatable hinged support technology, avoid the emergence of supplementary cutting;Using the combination mode of lifting system, rotatable winch and temporary support realizes the landscape ribbon construction operation of no support frame type, and in the specific implementation process of the present application, important equipment such as jack, winch can be reused.

Description

Technical Field

[0001] The invention belongs to the field of installation and construction of landscape streamers on roof steel structures, and in particular relates to a method for installing a column-supported box-shaped steel frame landscape streamer. Background Art

[0002] To enhance the aesthetics of buildings, adding landscape streamers to roofs is a popular element. Considering the durability and ease of installation of landscape streamers, architects often choose steel-structured landscape streamers. The corresponding load-bearing and force-transmitting components are structural columns. Therefore, the connection between the structural columns and the steel-structured landscape streamers is very important.

[0003] At present, the main connection construction methods between structural columns and landscape streamers include welding fixation, full-length support frame type and prefabricated two-way assembly type. The corresponding transition connection form is to embed a steel structure connector similar to a "claw" structure on the top of the column, and weld it to the connection point on the landscape streamer through a steel or steel pipe claw. However, in the actual construction process, there are often problems with the size errors of various prefabricated connection components that need to be supplemented and cut, resulting in delays in the construction period. In addition, full-length brackets need to be laid out when the landscape streamers are hoisted to temporarily stabilize the heavy landscape streamers. The layout of the brackets will bring many inconveniences to the construction workers and affect the construction progress. Moreover, the components are prefabricated in advance. The errors caused by the installation will lead to the cutting or lengthening of the landscape streamers, which will also affect the construction quality and progress.

[0004] Therefore, it is very important to find a method for installing column-supported box-type steel frame landscape streamers to ensure the installation quality of the landscape streamers, avoid the inconvenience caused by the layout of the whole hall brackets, and avoid the situation of cutting or compensation caused by insufficient installation accuracy. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for installing a column-supported box-shaped steel frame landscape streamer.

[0006] This column-supported box-shaped steel frame landscape streamer installation method includes the following construction steps:

[0007] Step 1: Cast a rigid column outside the steel pipe, cast a connecting column inside the pipe, and bury a fixed swivel at the head of the connecting column; multiple sets of jacks are arranged on the top of the rigid column through the annular steel plate;

[0008] Step 2: A support plate with holes is set on the jack, and mushroom-shaped bearings are symmetrically set in the middle axis direction of the long side of the support plate with holes;

[0009] Step 3: Double-join the hoop support on the perforated support plate, wrap the mushroom-shaped bearing and rotate around the mushroom-shaped bearing, and set a hinge support on the hoop support; double-join and bolt the hoop machine base on the connecting column, and the hoop machine base rotates around the embedded swivel head, and a winch is fixed on the hoop machine base;

[0010] Step 4: Lift the box-shaped steel frame, install a hinged support rod at one end of the hanging box-shaped steel frame, connect the hinged support rod and the winch through a steel wire rope, pull the other end of the hinged support rod to connect with the hinged support; set up a temporary support between the hinged support rod and the rigid column, and set up a box-shaped connecting steel frame between the hanging box-shaped steel frames.

[0011] Preferably, step one is to set a steel pipe, and then simultaneously pour concrete outside and inside the steel pipe to form a rigid column and a connecting column. The top of the steel pipe extends beyond the head of the rigid column by a certain distance. During the pouring of the connecting column, an embedded turntable is pre-buried in the head of the connecting column. The two ends of the embedded turntable are enlarged spheres, and the middle is a cylinder. One end of the embedded turntable is embedded in the connecting column, and the other end is exposed in the head of the connecting column; an annular steel plate is embedded in the top of the rigid column, and the inner diameter of the annular steel plate is equal to the outer diameter of the steel pipe, and the outer diameter is equal to the outer diameter of the rigid column; multiple groups of jacks are arranged on the annular steel plate.

[0012] Preferably, the processing method of the perforated support plate is to use a rectangular steel plate to process the perforated support plate, open a circular hole in the middle of the rectangular steel plate, and perform a circumferential cutting along 45 degrees at the middle opening to form an annular slope. The formed annular slope is welded to the steel pipe, and at the same time, two mushroom-shaped bearings are welded and fixed symmetrically in the upper and lower directions of the central axis of the long side of the perforated support plate for the installation of a rotatable hinge support. After the processing of the perforated support plate is completed, a trapezoidal main rib is welded along the center of the long side of the perforated support plate and a rectangular main rib is welded along the center of the short side. The inner ends of the long sides of the trapezoidal main ribs and the rectangular main ribs extend to the annular slope, and the outer ends extend to the outside of the perforated support plate. The trapezoidal main ribs, the rectangular main ribs and the steel pipes are welded and fixed, and the height of the trapezoidal main ribs is the same as that of the rectangular main ribs; the short sides of the trapezoidal main ribs extend to the side of the rigid column; two transverse secondary ribs are welded along the orthogonal direction of the trapezoidal main ribs, and the transverse secondary ribs are welded to the inner side of the short sides of the trapezoidal main ribs. The transverse secondary ribs are at the same height as the trapezoidal main ribs. The jacks are arranged at the intersection of the trapezoidal main ribs and the transverse secondary ribs below the perforated support plate and at the bottom of the rectangular main ribs.

[0013] Preferably, in step three, the installation method of the hoop support is specifically as follows: according to the shape of the mushroom-shaped bearing on the support plate with holes, the hoop support is processed, the hoop support is a symmetrical double-split type, the hoop support is connected and fixed by multiple sets of tension screws, and a mushroom head hollow structure is formed in the middle after the double splicing, the mushroom head size is consistent with the upper end of the mushroom-shaped bearing, and the hoop support rotates around the mushroom-shaped bearing on the support plate with holes; multiple sets of bolt holes are evenly opened around the upper part of the hoop support for bolting and fixing the support base plate; when the hoop support is on the mushroom-shaped bearing The outer side is bolted with tension screws, and the tension joint in the middle of the hoop support is welded to form a butt weld; the double-jointed hoop support is provided with a support base plate, which is a rectangular steel plate. The plane size of the support base plate is consistent with the double-jointed hoop support, and bolt holes are correspondingly provided on the support base plate and the hoop support; at the same time, a hinged support is welded at the center of the support base plate; after the tension welding of the hoop support is completed, the support base plate is fixed to the hoop support by bolting, and the hinged support rotates around the mushroom-shaped bearing with the hoop support.

[0014] Preferably, in step three, transverse tensioning holes and vertical bolt holes are provided on the clamp machine base, and the clamp machine base is double-bolted by tensioning screws on both sides of the embedded swivel at the top of the connecting column. A mushroom head hollow structure consistent with the shape of the upper end of the embedded swivel is formed in the middle of the clamp machine base after double splicing; after the clamp machine base is fixed by tensioning bolts, the winch is bolted to the clamp machine base by bolts, and the winch rotates around the embedded swivel with the clamp machine base.

[0015] Preferably, in step four, the box-shaped steel frame is installed and fixed by a unit-type hoisting method, and two concave joints are provided in the longitudinal direction of the end of the box-shaped steel frame, and two concave joints are provided orthogonally in the transverse direction. The concave joints are in the shape of a right-angled trapezoid, shorter at the top and longer at the bottom, and concave at the connecting side surface; a hinge support is welded below the intersection of the transverse concave joint and the box-shaped steel frame, and hinged support rods are respectively installed and hinged below the two hinge supports at both ends of the box-shaped steel frame. Ear plates with holes are welded at the upper 1 / 4 to 1 / 3 of the hinged support rod for the installation and fixation of temporary supports; a tower crane is used as a lifting system to transport the box-shaped steel frame unit to the upper part of the connecting column, and the longitudinal direction of the box-shaped steel frame unit is adjusted to be consistent with the center direction of the long side of the support plate with holes; a winch is connected to the ear plate with holes on the hinged support rod on one side by a steel wire rope, and the winch is started to connect one end of the hinged support rod to the rotatable hinge support on the support plate with holes.

[0016] Preferably, a pair of perforated ear plates are symmetrically embedded on both sides of the upper part of the rigid column head. After the hinged support rod connected to one end of the box-shaped steel frame is connected to the hinged support, the jack is started to adjust the height of the perforated support plate, and a temporary support is used to connect and fix the perforated ear plate at the lower part of the hinged support rod and the perforated ear plate on one side of the rigid column. Fix the hinged support rod on one side, and then remove the corresponding steel strand. At this time, the lifting system is still in working condition. Rotate the winch to the direction of the hinged support rod on the other side, and use the steel strand to connect the winch to the perforated ear plate on the other side of the hinged support rod again. Use the winch again to move the hinged support rod on the other side closer to and connect it to the hinge support on the perforated support plate on the other side; and install the temporary support on the other side. After that, remove the steel strand and move the lifting system to the installation operation position of the adjacent box-shaped steel frame unit.

[0017] Preferably, after the hinged support rods on both sides of the box-shaped steel frame are supported by temporary supports, the primary and secondary ribs of the hinged support are welded, and the rotatable hinged support is fixed and then the primary ribs and secondary ribs of the support are welded; the primary ribs of the support are welded to the clamp support and the support base plate directly above the trapezoidal main rib along the long side direction of the perforated support plate, and the bottom of the primary ribs of the support are welded to the perforated support plate; the secondary ribs of the support are welded to the clamp support and the support base plate along the short side direction of the perforated support plate, and the bottom of the secondary ribs of the support are also welded to the perforated support plate; the support leg plate is welded between the trapezoidal main rib and the annular steel plate to replace the jack; the upper part of the support leg plate is welded to the intersection of the trapezoidal main rib and the transverse secondary rib, and the lower part is welded to the annular steel plate, and then the jack is unloaded and removed, and the winch and the clamp machine base are removed from top to bottom, and then the embedded swivel exposed at the top of the connecting column is cut off; the removed winch and jack are reused in the installation operation of the adjacent box-shaped steel frame unit.

[0018] Preferably, after all the box-type steel frame units are installed, the sizes of the longitudinal and transverse box-type connecting steel frames are determined according to the spatial coordinates between adjacent concave connecting grooves. The end shape of the box-type connecting steel frame is consistent with the concave connecting groove. The end of the box-type connecting steel frame is in the shape of an inverted right-angled trapezoid, which is longer at the top and shorter at the bottom, and is convex at the side surface of the connection. The box-type connecting steel frames are hoisted and welded in sequence using a lifting system, and the box-type connecting steel frames are butt-welded to the concave connecting grooves. After all the longitudinal and transverse box-type connecting steel frames are hoisted and welded, the temporary supports are collectively removed to complete the installation of the column-supported box-type steel frame landscape streamers.

[0019] The column-supported box-shaped steel frame landscape streamer is obtained by any of the above-mentioned methods.

[0020] The beneficial effects of the present invention are:

[0021] 1) Compared with the welded fixed steel structure landscape streamer construction method, the present invention proposes an articulated landscape streamer connection structure. Through the developed liftable perforated support plate and rotatable hinge support technology, the landscape streamer can be accurately adjusted in angle and height during installation, avoiding the need for patching and cutting. It not only has significant technical benefits, but also saves construction time and manpower.

[0022] 2) Compared with the temporary fixing method of landscape streamers with a full-floor support frame, the present invention utilizes a combination of a lifting system, a rotatable winch and a temporary support to achieve the construction of landscape streamers without a support frame. At the same time, during the specific implementation of the present invention, important equipment such as jacks and winches can be reused. Therefore, the present invention not only has outstanding technical benefits, but also saves equipment costs and has considerable economic advantages.

[0023] 3) Compared with the prefabricated two-way assembly technology, the present invention first performs the installation operation of the box-shaped steel frame units in one direction. After the installation of the box-shaped steel frame units in one direction is completed, the measuring equipment is used to measure the entire size of the box-shaped connecting steel frames in the other direction, and the corresponding box-shaped connecting steel frames are manufactured one by one and numbered. This avoids the occurrence of inappropriate component sizes due to installation errors during the prefabricated two-way assembly process, and also avoids the need to patch or cut the prefabricated box-shaped steel frame components, thereby improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the installation flow chart of column-supported box-shaped steel frame landscape streamers;

[0025] Figure 2 This is a cross-sectional view of the embedded construction of column embedded parts;

[0026] Figure 3 This is a top view of the embedded construction of column embedded parts;

[0027] Figure 4 This is a cross-sectional view of the jack being installed in place;

[0028] Figure 5 This is a top view of the jack installed in place;

[0029] Figure 6 This is a cross-sectional view of the installation of the support plate with holes;

[0030] Figure 7 This is a side cross-sectional view of the installation of the support plate with holes;

[0031] Figure 8 is a top view of the support plate with holes;

[0032] Figure 9 This is a top view of the perforated support plate after installation;

[0033] Figure 10 This is a cross-sectional view of the installation of the rotatable hinge support;

[0034] Figure 11 It is a top view of the hoop support;

[0035] Figure 12 It is a top view of the support base plate;

[0036] Figure 13 This is a top view of the support base plate installed on the hoop support;

[0037] Figure 14 This is a top view of the installation of the rotatable hinge support;

[0038] Figure 15 This is a cross-sectional view of the installation of a rotatable winch;

[0039] Figure 16 It is a plan view of a rotatable winch mounted on a connecting column;

[0040] Figure 17 This is a top view of the rotatable winch installation;

[0041] Figure 18 This is a schematic diagram of the installation of the hinged support rod on one side;

[0042] Figure 19 This is a schematic diagram of the installation of the hinged support rod on the other side;

[0043] Figure 20 This is a schematic diagram of the welding plane of the primary and secondary ribs of the hinged support;

[0044] Figure 21 This is a schematic diagram after the jack and winch are removed;

[0045] Figure 22 This is a schematic diagram of the installation of adjacent box-shaped steel frame units;

[0046] Figure 23 This is a schematic diagram after the temporary support is removed and the installation work is completed;

[0047] In the figure: 1-rigid column; 2-ear plate with holes; 3-annular steel plate; 4-steel pipe; 5-embedded swivel; 6-jack; 7-mushroom-shaped bearing; 8-support plate with holes; 81-annular slope; 9-trapezoidal main rib; 91-rectangular main rib; 10-transverse secondary rib; 11-hoop support; 111-butt weld; 12-support base plate; 13-tension screw; 14-bolt; 15-hinge support; 16-hoop machine base; 17-winch; 18-steel strand; 19-hinge support rod; 20-box-type steel frame; 21-concave joint; 22-hoisting system; 23-temporary support; 24-support main rib; 25-support secondary rib; 26-bolt hole; 27-mushroom head; 28-leg plate; 29-box-type connecting steel frame; 30-connecting column. DETAILED DESCRIPTION

[0048] The present invention will be further described below with reference to the following examples. The following examples are provided only to facilitate understanding of the present invention. It should be noted that, without departing from the principles of the present invention, it is possible for a person skilled in the art to make various modifications to the present invention, and such improvements and modifications fall within the scope of the claims of the present invention.

[0049] Example 1

[0050] As an example, Figures 1 to 23 As shown, a column-supported box-shaped steel frame landscape streamer installation method includes the following construction steps:

[0051] Step 1: Embedding of column embedded parts:

[0052] Construction of rigid column 1: reference Figure 2 and Figure 3 , drawing on the construction method of steel pipe 4 concrete column, the construction of the rigid column 1 is carried out. During construction, a pair of ear plates 2 with holes are symmetrically embedded on both sides of the upper part of the column head to facilitate the installation of temporary support 23 in the later stage; at the same time, an annular steel plate 3 is embedded on the top of the rigid column 1. The inner diameter of the annular steel plate 3 is equal to the outer diameter of the steel pipe 4, and the outer diameter is equal to the outer diameter of the rigid column 1.

[0053] Connection column 30 construction: reference Figure 2 and Figure 3 During the construction of the rigid column 1, the steel pipe 4 is appropriately extended and extends beyond the column head by a certain distance, and then concrete is poured inside and outside the pipe simultaneously to form the rigid column 1 and the connecting column 30. During the pouring process of the connecting column 30, an embedded turntable 5 is pre-buried at its head. The two ends of the embedded turntable 5 are enlarged spheres and the middle is a cylinder. One end is embedded in the connecting column 30 and the other end exposes the column head.

[0054] Jack 6 is installed in place: Reference Figure 4 and Figure 5 After all the embedded parts of the column are embedded, multiple sets of jacks 6 are arranged on the annular steel plate 3 to prepare for the installation and adjustment of the perforated support plate 8. The jacks 6 need to be arranged at the intersection of the trapezoidal main rib 9 and the transverse secondary rib 10 below the perforated support plate 8 and at the bottom of the rectangular main rib 91.

[0055] Step 2: Processing and installation of the perforated support plate 8:

[0056] Processing of support plate with holes 8: Reference Figures 6 to 9, use a rectangular steel plate to process the perforated support plate 8, open a circular hole in the middle of the rectangular steel plate, and make a 45° circumferential cut at the middle opening to form an annular slope 81. The aperture of the formed annular slope 81 is slightly larger than the outer diameter of the steel pipe 4, so that a certain gap is retained between the perforated support plate 8 and the steel column, which is convenient for later welding and fixing. At the same time, two mushroom-shaped bearings 7 are symmetrically welded and fixed in the direction of the central axis of the long side of the perforated support plate 8, which is convenient for the later installation of the rotatable hinge support 15;

[0057] Welding of trapezoidal main rib 9 and rectangular main rib 91: Reference Figures 6 to 9 After the processing of the perforated support plate 8 is completed, the trapezoidal main rib 9 is welded along the center of the long side of the perforated support plate 8, and the rectangular main rib 91 is welded along the center of the short side. The inner ends of the long sides of the trapezoidal main rib 9 and the rectangular main rib 91 extend to the annular slope 81, and the outer ends extend to the outer edge of the perforated support plate 8. In this way, there is a certain gap between the trapezoidal main rib 9 and the rectangular main rib 91 and the steel pipe 4, which is convenient for later welding and fixing; the height of the trapezoidal main rib 9 is consistent with that of the rectangular main rib 91; the short side of the trapezoidal main rib 9 extends to the side of the rigid column 1.

[0058] Transverse secondary rib 10 welding: reference Figures 6 to 9 After the trapezoidal main rib 9 and the rectangular main rib 91 are welded, two transverse secondary ribs 10 are welded along the orthogonal direction of the trapezoidal main rib 9. The transverse secondary ribs 10 are welded on the inner side of the short side of the trapezoidal main rib 9 and are at the same height as the trapezoidal main rib 9.

[0059] Installation of support plate with holes 8: Reference Figure 6 , insert the prepared perforated support plate 8 into the connecting column 30 from top to bottom along the outside of the connecting column 30 until the bottom connects with the jack 6.

[0060] Step 3: Install the rotatable hinge support 15:

[0061] Hoop support 11 tension welding: reference Figure 10 、 Figure 11 and Figure 14 According to the shape of the mushroom-shaped bearing 7 on the perforated support plate 8, the hoop support 11 is processed. The hoop support 11 is a symmetrical double-split type, and is connected and fixed by setting multiple groups of pulling holes inside. After double splicing, a hollow mushroom head 27 is formed in the middle, and its size is consistent with that of the mushroom-shaped bearing 7, which facilitates the free rotation of the hoop support 11 on the perforated support plate 8 after the hoop is connected; at the same time, multiple groups of bolt holes 26 are evenly opened around the upper part of the hoop support 11, which is convenient for the later bolting and fixation of the support base plate 12; after the hoop support 11 is bolted to the perforated support plate 8 on the outside of the mushroom-shaped bearing 7 through the pulling screw 13, welding is performed at the position of the middle pulling seam to form a butt weld 111, thereby strengthening the hoop force of the hoop support 11.

[0062] Support base plate 12 bolt connection: reference Figure 10 、 Figures 12 to 14 The support base plate 12 is a rectangular steel plate, and its plane size is consistent with the double-jointed clamp support 11. The bolt hole 26 is also set on the support base plate 12 at the position consistent with the position of the bolt hole 26 set on the clamp support 11; at the same time, a hinge support 15 is welded at the center position of the support base plate 12; then after the clamp support 11 is tensioned and welded, the processed support base plate 12 is fixed to the clamp support 11 by bolting with bolts 14, and then the free rotation of the hinge support 15 is realized through the mushroom-shaped bearing 7.

[0063] Installation of rotatable winch 17:

[0064] Clamp base 16 tension bolt connection: reference Figures 15 to 17 , similar to the connection and fixing principle of the clamp support 11 in 4.1, the clamp machine base 16 is also provided with horizontal tensioning holes and vertical bolt holes 26, and the clamp machine base 16 is bolted by tensioning screws 13 on both sides of the embedded swivel 5 at the top of the connecting column 30. The clamp machine base 16 after double splicing also forms a hollow mushroom head 27 in the middle thereof that is consistent with the shape of the embedded swivel 5; the clamp machine base 16 is only tensioned and bolted, and the middle seam is not welded, which is convenient for later dismantling and reuse.

[0065] Winch 17 bolting: Reference Figures 15 to 17 After the clamp machine base 16 is bolted and fixed, the winch 17 is bolted to the clamp machine base 16 using the bolts 14. The free rotation of the winch 17 can be achieved by embedding the swivel 5, which is convenient for flexible operation.

[0066] Step 4: Install the hinged support rod 19 on one side

[0067] Box steel frame 20 units lifting: reference Figure 18The box-shaped steel frame 20 is installed and fixed by a unit-type hoisting method. Two concave connecting grooves 21 are provided at the end of the box-shaped steel frame 20 of a unit in the longitudinal direction, and two concave connecting grooves 21 are provided orthogonally in the transverse direction to facilitate the installation and welding of the longitudinal and transverse box-shaped connecting steel frames 29 in the later stage; the concave connecting groove 21 is in the shape of a right-angled trapezoid, which is short on the top and long on the bottom, and is concave on the side surface of the connection; a hinge support 15 is welded below the intersection of the transverse concave connecting groove 21 and the box-shaped steel frame 20, and then two hinge support rods 19 that have been processed are installed under the two hinge supports 15. The upper part of the hinge support rod 19 A pair of perforated ear plates 2 are welded at 1 / 4 to 1 / 3 to facilitate the installation and fixation of the temporary support 23 in the later stage; a tower crane is used as the lifting system 22 to transport a processed box-shaped steel frame 20 unit to the upper part of the connecting column 30, and the spatial position and posture of the box-shaped steel frame 20 unit, the perforated support plate 8 and the rotatable hinge support 15 are adjusted. The longitudinal direction of the box-shaped steel frame 20 unit is kept consistent with the center direction of the long side of the perforated support plate 8 as much as possible, so that the rotatable hinge support 15 can be fine-tuned to meet the installation accuracy requirements of the hinge support rod 19, preparing for the installation of the hinge support rod 19 on one side.

[0068] Winch 17 rotation auxiliary adjustment: reference Figure 18 , rotate and adjust the winch 17 that has been adjusted into place, use the steel strand 18 to connect the winch 17 to the perforated ear plate 2 on one side of the hinged support rod 19, start the winch 17, and gradually move the one side of the hinged support rod 19 closer to the rotatable hinge support 15 on the perforated support plate 8. Through continuous fine-tuning of the rotatable hinge support 15, the one side of the hinged support rod 19 is connected.

[0069] Adjust the height of the perforated support plate 8: Figure 18 According to the connected side hinge rod 19, start the jack 6 to adjust the height of the perforated support plate 8, and then combine the fine adjustment of the rotatable hinge support 15 to further assist in adjusting the spatial position and posture of the side hinge rod 19 to meet the corresponding accuracy requirements.

[0070] One side temporary support 23 hoisting fixation: reference Figure 18 After the hinged support rod 19 on one side is connected and adjusted into place, a temporary support 23 is used to connect and fix the hinged support rod 19 on one side through the perforated ear plate 2 at the lower part of the hinged support rod 19 and the perforated ear plate 2 on one side of the rigid column 1, so that the hinged support rod 19 on one side is firmly fixed.

[0071] Installation of hinged support rod 19 on the other side:

[0072] Auxiliary adjustment of winch 17 and jack 6: Figure 19As shown, after the hinged support rod 19 on one side is connected and the temporary support 23 is hoisted and fixed, the corresponding steel strand 18 is removed. At this time, the lifting system 22 is still in working condition, and the winch 17 is rotated to the direction of the hinged support rod 19 on the other side. The steel strand 18 is used again to connect the winch 17 to the perforated ear plate 2 on the hinged support rod 19 on the other side. The winch 17 is used again to gradually move the hinged support rod 19 on the other side closer to the rotatable hinge support 15 on the perforated support plate 8 on the other side. The hinged support rod 19 on the other side is connected by continuous fine-tuning of the rotatable hinge support 15. Simultaneously, according to step 6.3, the spatial position and posture of the hinged support rods 19 on both sides are all adjusted to meet the installation accuracy requirements.

[0073] The temporary support 23 on the other side is hoisted and fixed: Figure 19 As shown, the hinged support rod 19 on the other side is fixed, and then the steel strand 18 between the winch 17 and the hinged support rod 19 on the other side is removed, and the lifting system 22 is removed. The removed lifting system 22 can be used for the installation operation of the adjacent box-shaped steel frame 20 unit.

[0074] Hinge support 15 primary and secondary rib welding: reference Figure 20 As shown, after the hinge rods 19 on both sides are firmly fixed, the primary and secondary ribs of the rotatable hinge support 15 are welded to fix the rotatable hinge support 15 so that it cannot be rotated again; the primary and secondary rib welding is divided into the welding of the support main ribs 24 and the welding of the support secondary ribs 25; the support main ribs 24 are welded to the hoop support 11 and the support base plate 12 on both sides directly above the trapezoidal main ribs 9 along the long side direction of the perforated support plate 8, and the bottom is welded to the perforated support plate 8; the support secondary ribs 25 are welded to the hoop support 11 and the support base plate 12 on both sides along the short side direction of the perforated support plate 8, and the corresponding bottom is also welded to the perforated support plate 8.

[0075] Removal of jack 6 and winch 17:

[0076] Gap welding: Reference Figure 21 After the welding of the primary and secondary ribs of the hinge support 15 is completed, welding is first performed in the gaps between the perforated support plate 8, the trapezoidal primary rib 9 and the rectangular primary rib 91 and the steel pipe 4 to form an annular slope weld 81 and a vertical weld around the steel pipe 4.

[0077] The leg plate 28 is welded to replace the jack 6 one by one: Figure 21 After the gap welding is completed, the support leg plates 28 are welded between the trapezoidal main ribs 9 and the annular steel plate 3 to replace the jacks 6 one by one; the upper part of the support leg plates 28 is welded at the intersection of the trapezoidal main ribs 9 and the transverse secondary ribs 10, and the lower part is welded on the annular steel plate 3, and then the jacks 6 can be unloaded and removed.

[0078] Reuse after dismantling the jack 6 and the winch 17: Figure 21After the jack 6 is removed, the hoist 17 and the clamp base 16 are removed from top to bottom, and then the embedded turntable 5 exposed at the top of the connecting column 30 is cut off; the removed hoist 17 and jack 6 are reused in the installation operation of the adjacent box-shaped steel frame 20 unit.

[0079] Installation of 20 adjacent box steel frames: Figure 22 As shown, the installation work of the adjacent box-shaped steel frame 20 units is repeated.

[0080] The box-shaped connecting steel frame 29 is welded and installed:

[0081] Longitudinal and transverse box-shaped connecting steel frame 29 hoisting and welding: reference Figure 23 After all the box-shaped steel frame 20 units are installed, the spatial coordinates of the adjacent concave connecting grooves 21 in the adjacent box-shaped steel frames 20 are measured by a three-dimensional scanner. The dimensions of the longitudinal and transverse box-shaped connecting steel frames 29 are determined according to the spatial coordinates between the adjacent concave connecting grooves 21, and each box-shaped connecting steel frame 29 is numbered so as not to be confused during installation. The end shape of the box-shaped connecting steel frame 29 is consistent with the concave connecting groove 21. The end of the box-shaped connecting steel frame 29 is in the shape of an inverted right-angled trapezoid, which is longer at the top and shorter at the bottom, and is convex at the side surface of the connection. The longitudinal and transverse box-shaped connecting steel frames 29 are hoisted and welded in sequence using the lifting system 22. When the box-shaped connecting steel frame 29 is butt-welded to the concave connecting groove 21, the commonly used temporary spot welding fixing technology of the butt plate is used to assist in ensuring the installation and welding accuracy of the box-shaped connecting steel frame 29.

[0082] Temporary support 23 removed, installation completed: Reference Figure 23 After all the longitudinal and transverse box-shaped connecting steel frames 29 are hoisted and welded, the temporary supports 23 around the rigid columns 1 are collectively removed to complete all the installation work of the column-supported box-shaped steel frame landscape streamers.

Claims

1. A method for installing a column-supported box-shaped steel frame landscape streamer, characterized in that: The construction steps include: Step 1: Cast a rigid column outside the steel pipe, cast a connecting column inside the pipe, and bury a fixed swivel at the head of the connecting column; multiple sets of jacks are arranged on the top of the rigid column through the annular steel plate; Step 2: A support plate with holes is set on the jack, and mushroom-shaped bearings are symmetrically set in the middle axis direction of the long side of the support plate with holes; Step 3: Double-join the hoop support on the perforated support plate, wrap the mushroom-shaped bearing and rotate around the mushroom-shaped bearing, and set a hinge support on the hoop support; double-join and bolt the hoop machine base on the connecting column, and the hoop machine base rotates around the embedded swivel head, and a winch is fixed on the hoop machine base; The fourth step is to lift the box-shaped steel frame, install a hinged support rod at one end of the hanging box-shaped steel frame, connect the hinged support rod and the winch through a steel strand, and pull the other end of the hinged support rod to connect with the hinged support; set a temporary support between the hinged support rod and the rigid column, and set a box-shaped connecting steel frame between the hanging box-shaped steel frame; the first step is specifically to set a steel pipe, and then simultaneously pour concrete outside and inside the steel pipe to form a rigid column and a connecting column. The top of the steel pipe exceeds the head of the rigid column by a certain distance. During the pouring of the connecting column, an embedded rotating head is pre-buried in the head of the connecting column. The two ends of the embedded rotating head are enlarged spheres and the middle is a cylinder. One end of the embedded rotating head is embedded in the connecting column, and the other end exposes the head of the connecting column; an annular steel plate is embedded in the top of the rigid column. The inner diameter of the annular steel plate is equal to the outer diameter of the steel pipe, and the outer diameter is equal to the outer diameter of the rigid column; multiple sets of jacks are arranged on the annular steel plate; In step three, the installation method of the hoop support is specifically as follows: according to the shape of the mushroom-shaped bearing on the support plate with holes, the hoop support is processed. The hoop support is a symmetrical double-piece type. The hoop support is connected and fixed by multiple sets of tension screws. After the double-piece, a mushroom head hollow structure is formed in the middle. The size of the mushroom head is consistent with the upper end of the mushroom-shaped bearing. The hoop support rotates around the mushroom-shaped bearing on the support plate with holes; multiple sets of bolt holes are evenly opened around the upper part of the hoop support for bolting and fixing the support base plate; wait for the hoop support to be on the outside of the mushroom-shaped bearing Through the tension screw bolt connection, welding is performed at the position of the tension joint in the middle of the hoop support to form a butt weld; the hoop support after double splicing is provided with a support base plate, which is a rectangular steel plate, and the plane size of the support base plate is consistent with the hoop support after double splicing, and bolt holes are correspondingly provided on the support base plate and the hoop support; at the same time, a hinged support is welded at the center position of the support base plate; after the tension welding of the hoop support is completed, the support base plate is fixed to the hoop support by bolting, and the hinged support rotates around the mushroom-shaped bearing with the hoop support; In step 4, the box-shaped steel frame is installed and fixed by a unit-type hoisting method. Two concave connecting grooves are provided in the longitudinal direction of the end of the box-shaped steel frame, and two concave connecting grooves are provided orthogonally in the transverse direction. The concave connecting grooves are in the shape of a right-angled trapezoid, shorter at the top and longer at the bottom, and concave at the connecting side surfaces; a hinge support is welded below the intersection of the transverse concave connecting groove and the box-shaped steel frame, and hinged support rods are respectively installed and hinged below the two hinge supports at both ends of the box-shaped steel frame. Ear plates with holes are welded at the upper 1 / 4 to 1 / 3 of the hinged support rods for the installation and fixation of temporary supports; a tower crane is used as a lifting system to transport the box-shaped steel frame unit to the upper part of the connecting column, and the longitudinal direction of the box-shaped steel frame unit is adjusted to be consistent with the center direction of the long side of the support plate with holes; a winch is connected to the ear plate with holes on the hinged support rod on one side by a steel wire rope, and the winch is started to connect one end of the hinged support rod to the rotatable hinge support on the support plate with holes.

2. The method for installing a column-supported box-shaped steel frame landscape streamer according to claim 1, characterized in that: The processing method of the perforated support plate is to use a rectangular steel plate to process the perforated support plate, open a circular hole in the middle of the rectangular steel plate, and perform a 45° circumferential cutting at the middle opening to form an annular slope. The formed annular slope is welded to the steel pipe, and at the same time, two mushroom-shaped bearings are welded and fixed symmetrically in the upper and lower sides of the central axis direction of the long side of the perforated support plate for the installation of the rotatable hinge support. After the processing of the perforated support plate is completed, a trapezoidal main rib is welded along the center of the long side of the perforated support plate and a rectangular main rib is welded along the center of the short side. The trapezoidal main rib is welded along the center of the long side of the perforated support plate. The inner ends of the long sides of the trapezoidal main ribs and the rectangular main ribs extend to the annular slope, and the outer ends extend to the outer edge of the perforated support plate. The trapezoidal main ribs, the rectangular main ribs and the steel pipes are welded and fixed, and the height of the trapezoidal main ribs is the same as that of the rectangular main ribs; the short sides of the trapezoidal main ribs extend to the side of the rigid column; two transverse secondary ribs are welded along the orthogonal direction of the trapezoidal main ribs, and the transverse secondary ribs are welded to the inner side of the short sides of the trapezoidal main ribs. The transverse secondary ribs are at the same height as the trapezoidal main ribs. The jacks are arranged at the intersection of the trapezoidal main ribs and the transverse secondary ribs below the perforated support plate and at the bottom of the rectangular main ribs.

3. The method for installing a column-supported box-shaped steel frame landscape streamer according to claim 1, characterized in that: In step three, horizontal tensioning holes and vertical bolt holes are provided on the clamp machine base, and the clamp machine base is double-bolted by tensioning screws on both sides of the embedded swivel at the top of the connecting column. A mushroom head hollow structure consistent with the shape of the upper end of the embedded swivel is formed in the middle of the clamp machine base after double splicing; after the clamp machine base is fixed by tensioning bolts, the winch is bolted to the clamp machine base with bolts, and the winch rotates around the embedded swivel with the clamp machine base.

4. The method for installing a column-supported box-shaped steel frame landscape streamer according to claim 3, characterized in that: A pair of perforated ear plates are symmetrically embedded on both sides of the upper part of the rigid column head. After the hinged support rod connected to one end of the box-shaped steel frame is connected to the hinged support, start the jack to adjust the height of the perforated support plate, and use temporary support to connect and fix the perforated ear plate at the lower part of the hinged support rod and the perforated ear plate on one side of the rigid column. Fix the hinged support rod on one side, and then remove the corresponding steel strand. At this time, the lifting system is still in working condition. Rotate the winch to the direction of the hinged support rod on the other side, and use the steel strand to connect the winch to the perforated ear plate on the other side of the hinged support rod again. Use the winch again to move the hinged support rod on the other side closer to and connect the hinged support on the perforated support plate on the other side; and install the temporary support on the other side. After that, remove the steel strand and move the lifting system to the installation operation position of the adjacent box-shaped steel frame unit.

5. The method for installing a column-supported box-shaped steel frame landscape streamer according to claim 2, characterized in that: After the hinged support rods on both sides of the box-shaped steel frame are supported by temporary supports, the primary and secondary ribs of the hinged support are welded. After the rotatable hinged support is fixed, the primary ribs and secondary ribs of the support are welded; the primary ribs of the support are welded to the clamp support and the support base plate directly above the trapezoidal main rib along the long side direction of the perforated support plate, and the bottom of the primary ribs of the support are welded to the perforated support plate; the secondary ribs of the support are welded to the clamp support and the support base plate along the short side direction of the perforated support plate, and the bottom of the secondary ribs of the support are also welded to the perforated support plate; the support leg plate is welded between the trapezoidal main rib and the annular steel plate to replace the jack; the upper part of the support leg plate is welded to the intersection of the trapezoidal main rib and the transverse secondary rib, and the lower part is welded to the annular steel plate, and then the jack is unloaded and removed, and the winch and clamp machine base are removed from top to bottom, and then the embedded swivel exposed at the top of the connecting column is cut off; the removed winch and jack are reused in the installation work of the adjacent box-shaped steel frame units.

6. The column-supported box-shaped steel frame landscape streamer installation method according to claim 1 is characterized in that: After all the box-type steel frame units are installed, the sizes of the longitudinal and transverse box-type connecting steel frames are determined according to the spatial coordinates between adjacent concave joints. The end shape of the box-type connecting steel frame matches the concave joint. The end of the box-type connecting steel frame is in the shape of an inverted right-angled trapezoid, which is longer on the top and shorter on the bottom, and is convex on the side surface of the joint. The box-type connecting steel frames are hoisted and welded in sequence using the lifting system, and the box-type connecting steel frames are butt-welded to the concave joints. After all the longitudinal and transverse box-type connecting steel frames are hoisted and welded, the temporary supports are collectively removed to complete the installation of the column-supported box-type steel frame landscape streamers.

7. Pillar-supported box-shaped steel frame landscape streamer, characterized by: Obtained by the method according to any one of claims 1 to 6.

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