Overall sliding construction method for circular steel structure slope track
The overall sliding construction method of the circular steel structure slope track solved the construction problem in a narrow site, achieved low-cost and high-efficiency construction results, and improved construction safety and equipment automation.
Patent Information
- Application Number
- CN202511029985.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-10-10
AI Technical Summary
In construction, conventional methods make it difficult to construct circular steel structures in small sites, resulting in high construction costs, long construction periods, poor safety, and low levels of equipment automation.
The circular steel structure slope track overall sliding construction method is adopted. Through measurement and layout, pier casting and sliding track laying, circular steel structure assembly and overall sliding and installation, winches and jacks are used to achieve overall sliding of the steel structure, combined with sliding components and limit blocks to ensure safety and stability.
Effectively reduce construction costs, shorten construction period, improve equipment automation, ensure operational flexibility and safety, and improve construction efficiency.
Smart Images
Figure CN120759341A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building construction, and in particular to an integral sliding construction method for a circular steel structure slope track. Background Art
[0002] During construction, installing a skylight on a roof can achieve both aesthetic and practical effects. The skylight curtain wall framework is a spherical steel structure. After the main building is completed, the tower cranes have been removed. Therefore, there are two most direct methods for constructing the skylight steel structure. The first method is to use a truck crane to lift the steel structure components one by one into place and assemble them at the original design location. However, because the surrounding structures and the sunken plaza of the skylight have been completed, the crane can only be set up on the fire escape. However, due to the high location of the skylight, a large crane is required. However, the fire escape slab cannot bear the weight of the crane and the counterweight. Therefore, a back-up support is required at the bottom of the fire escape slab where the crane passes and works. The back-up support area is large, and the crane tonnage is large, which requires high rental costs. Therefore, this construction method is very expensive and time-consuming, making it unsuitable. The second method is to lift the steel structure components to the roof and then use poles to move the components to the designed location for assembly. Obviously, this method is complex to construct, slow, and has poor safety guarantees, so it is also unsuitable.
[0003] In summary, it is difficult to meet the economic and practical requirements of the project by adopting conventional direct methods. Summary of the Invention
[0004] In order to solve the above problems, the present invention provides a method for the overall sliding construction of a circular steel structure slope track, which solves the problem that large lifting machinery and equipment cannot enter the site for construction due to the small site. The construction cost is reduced and the construction period will be greatly shortened. It is efficient, economical, has a high degree of equipment automation, is convenient and flexible to operate, has good safety and high reliability.
[0005] In order to achieve the above object, the present invention adopts the following technical solution: a method for constructing an integral sliding of a circular steel structure slope track, comprising the following steps:
[0006] Step 1: Measure and lay out the lines. Use ink to draw the outer edges of two sliding tracks at the dome installation position according to the sliding track design drawing. Draw a line parallel to the sliding track at the center of the dome installation position as the sliding direction control line. Extend the sliding direction control line and select a point on the sliding direction control line as the center of the circle to draw the outline of the bottom circle of the circular steel structure. The area covered by the outline is used as the assembly area of the circular steel structure. On the outline of the circle, draw the center line of each pier according to the designed pier position.
[0007] Step two, the support pouring and the sliding track laying, the two layers of plastic cloth are laid as the isolation layer between the support and the floor of the assembly area, then pouring, the support for supporting the sliding track is poured along the outer edge line of the sliding track on the floor, and the adjacent supports for supporting the sliding track are spaced 1.5 m, the sliding track is erected on the support for supporting the sliding track, and the suspended section of the sliding track at the dome installation position adopts a plurality of triangular steel supports;
[0008] Step three, the assembly of the circular steel structure, the cross line positioning is adopted, the line hammer is hung at the intersection of the cross line
[0009] positioning to ensure that the center of the top ring of the circular steel structure coincides with the center point of the assembly area, the cross intersection vertical keel is assembled first, then the innermost ring keel is assembled, the remaining vertical keels are sequentially installed, after the vertical keels are installed, the remaining ring keels are accurately installed according to the position, all the keels are spot welded, and full welding is performed after the assembly inspection is qualified;
[0010] Step four, the integral sliding and installation of the circular steel structure, the winch is used as the traction equipment, the A8.3mm steel wire rope is used and connected with the winch and the circular steel structure respectively, a plurality of jacks are arranged at the peripheral part of the dome installation position, the circular steel structure is pulled to the dome installation position by the winch, then the circular steel structure is synchronously jacked up by the plurality of jacks, the sliding track is disassembled, then the jacks are lowered to the installation height, the circular steel structure is welded with the embedded part on the dome installation position, and finally the jacks are disassembled.
[0011] Preferably, the supports for supporting the sliding track in step two gradually decrease in height from the assembly area to the dome installation position, so as to ensure that the sliding track has a slope of 2% to 3%.
[0012] Preferably, the sliding track is further provided with a limiting block at both ends in step two.
[0013] Preferably, step four further comprises a sliding assembly setting, the sliding assembly is combined by the sliding support and the bearing and vertically erected on the sliding track, grease is used for lubrication, and the sliding assembly and the circular steel structure are fixed by steel cable.
[0014] Preferably, in step four, in order to ensure that the circular steel structure does not deform during the sliding process, 6 φ8.3mm steel wires are pulled on the ring keel at the bottom of the circular steel structure along the center of the ring keel, and the symmetric point positions are fixed by screwing and bayonet.
[0015] Compared with the prior art, the construction method has the beneficial effects that: the round steel structure is pre-processed in the assembling area, so that the overall installation size is guaranteed, and the installation can be adjusted at any time, the workers install on the flat ground, the welding is performed on the flat ground, the welding quality can be effectively guaranteed, the round steel structure is pulled by using a winch through the laid sliding rail, the problem that large hoisting mechanical equipment cannot enter the site for construction due to a small site is solved, the construction cost can be effectively reduced, the construction period is shortened, and the operation is convenient, flexible, safe, and reliable. BRIEF DESCRIPTION OF DRAWINGS
[0016] The application will be further described below with reference to the drawings:
[0017] Fig. 1 The construction method flowchart of the application is shown in the figure;
[0018] Fig. 2 The sliding rail assembly schematic diagram of the application is shown in the figure;
[0019] Fig. 3 The structure schematic diagram of the support pier of the application is shown in the figure;
[0020] In the figure: 1, dome installation position; 2, assembling area; 3, sliding rail; 4, installation support; 5, support pier; 6, triangular steel. DETAILED DESCRIPTION
[0021] To make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.
[0022] The technical scheme of the application will be described in detail below with specific embodiments. The following specific embodiments can be combined or replaced according to actual conditions, and the same or similar concepts or processes can not be described in some embodiments.
[0023] Embodiment 1
[0024] As shown in the figure, the application provides a round steel structure slope rail overall sliding construction method, which comprises the following steps: Figs. 1 to 3
[0025] Step one, measure the release, according to the design of the sliding track 3 in the dome installation position with ink pop out two sliding track 3 outside the line, in the center of the dome installation position 1 pop out a sliding track 3 parallel line, as the sliding direction control line, the sliding direction control line extension, and select the sliding direction control line on a point as the center of the circle, pop out the contour line of the bottom of the circular steel structure circle, to cover the area as the circular steel structure assembly area 2, on the contour line of the circle according to the design of the pier 5 position pop out each pier 5 position center line; through the extension of the sliding direction control line, with a point on the sliding direction control line as the center to make the circular steel structure assembly area 2, to facilitate the alignment of the circular steel structure after the assembly is completed with the dome installation position 1, reduce the difficulty of alignment steps; optionally, when the terrain first can't make the assembly area 2 along the extension direction of the sliding direction control line, optional suitable position as the assembly area 2, after the assembly is completed, move to the sliding track;
[0026] Step two, pier 5 pouring and sliding track 3 laying, the assembly area between the pier 5 and the floor is laid with two layers of plastic cloth as the isolation layer, and then pouring is carried out, which facilitates the removal of the pier 5 in the assembly area and reduces the influence on the floor. The pier 5 for supporting the sliding track 3 is poured on the floor along the outer edge line of the sliding track 3, and the adjacent piers 5 for supporting the sliding track 3 are spaced 1.5 m apart. The track position and spacing not only consider the stability and safety of the structure during sliding, but also most importantly consider that the deformation of the steel track when crossing the light well meets the construction requirements. Therefore, the distance between the sliding track 3 and the inner edge of the dome installation position 1 is 1.35 m, and the distance between the piers 5 at the lower part of the corresponding two sections of the sliding track 3 is also arranged correspondingly. The sliding track 3 is erected on the pier for supporting the sliding track 3, and the suspended section of the sliding track 3 in the dome installation position is supported by a plurality of triangular steels 6;
[0027] Step three, assembly of the circular steel structure, positioning is carried out by using cross line, hanging line hammer at the intersection of the cross line
[0028] to ensure that the center of the top ring of the circular steel structure coincides with the center point of the assembly area 2. The cross vertical keel is assembled first, then the innermost ring keel is installed, and the remaining vertical keels are installed in turn. After the vertical keels are installed, the remaining ring keels are installed accurately according to the position. All the keels are spot welded, and full welding is carried out after the assembly is inspected and qualified. After the welding of the circular steel structure is completed, corrosion prevention, rust prevention and fire prevention are carried out, and fluorocarbon spraying treatment is carried out. The rust removal quality of the steel member should reach Sa2.5 level. The primer is epoxy zinc-rich primer, the intermediate paint is epoxy cloud iron anti-rust paint, and the topcoat is dark gray polyurethane topcoat. The film thickness is required to be greater than 125 microns (excluding fire retardant paint). Before painting, quality inspection should be carried out by the quality inspection department and the inspection certificate should be filled in. The surface of the steel structure is painted with fire retardant paint, and the compatibility test with the topcoat is carried out. The fire retardant grade is two levels;
[0029] Step four, the whole slip of the circular steel structure and installation, the winch is used as the traction equipment, the steel wire rope uses A8.3mm steel wire rope and is connected with the winch and the circular steel structure respectively, a plurality of jacks are arranged at the 1st periphery of the dome installation position, the circular steel structure is pulled to the 1st periphery of the dome installation position by the winch, then the circular steel structure is jacked up by the plurality of jacks synchronously, the sliding track is disassembled, then the jacks are lowered to the installation height, the circular steel structure is welded with the embedded part on the 1st periphery of the dome installation position, and finally the jacks are disassembled; in the embodiment, the maximum weight of the circular steel structure is considered to be 20 tons, the sliding friction coefficient is 0.006, the maximum traction force is 0.012 tons, a JM3 winch is selected as the traction equipment, the steel wire rope uses A8.3mm steel wire rope, and the minimum breaking tension is 53KN.
[0030] Further, the support pier 5 for supporting the sliding track 3 in the step two is gradually reduced in height from the assembly area 2 to the dome installation position 1, so that the sliding track 3 has a slope of 2% to 3%. The slope can facilitate the smooth sliding of the circular steel structure, reduce the traction force of the winch, and prolong the service life of the equipment.
[0031] Further, the sliding track 3 is also provided with a limiting block at both ends to prevent the circular steel structure from sliding out of the track due to improper operation and causing loss.
[0032] Further, the step four further includes a sliding assembly, which is composed of a sliding support and a bearing and is vertically arranged on the sliding track and is lubricated with butter, and the sliding assembly and the circular steel structure are fixed by steel cables. By arranging the sliding assembly, the sliding assembly and the sliding track 3 are in contact and friction during the sliding process, and the circular steel structure does not contact the sliding track 3, which effectively avoids the wear of the circular steel structure.
[0033] Further, in the step four, to ensure that the circular steel structure does not deform during the sliding process, 6 φ8.3mm steel wire ropes are pulled together along the center of the ring keel at the bottom of the circular steel structure, and are tightened by bolts and sockets to fix the symmetric points to prevent the deformation of the circular steel structure during the sliding process.
[0034] In addition to the above preferred embodiments, the present application also has other embodiments, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application belong to the scope of the present application.
Claims
1. A method for the overall sliding construction of a circular steel structure slope track, characterized in that: The following steps are involved: Step 1: Measure and lay out the lines. Use ink to draw the outer edges of two sliding tracks at the dome installation position according to the sliding track design drawing. Draw a line parallel to the sliding track at the center of the dome installation position as the sliding direction control line. Extend the sliding direction control line and select a point on the sliding direction control line as the center of the circle to draw the outline of the bottom circle of the circular steel structure. The area covered by the outline is used as the assembly area of the circular steel structure. On the outline of the circle, draw the center line of each pier according to the designed pier position. Step 2: Casting piers and laying sliding tracks. Two layers of plastic sheeting are laid between the piers and the floor slab in the assembly area as an isolation layer before casting. Piers for supporting the sliding tracks are cast on the floor slab along the outer edge of the sliding tracks, with adjacent piers for supporting the sliding tracks spaced 1.5m apart. The sliding tracks are installed on the piers for supporting the sliding tracks. Several triangular steel supports are used for the suspended section of the sliding tracks at the dome installation position. Step 3: Assemble the circular steel structure using cross lines for positioning. Position the plumb bob to ensure that the center of the top ring of the circular steel structure coincides with the center of the assembly area. First assemble the cross-shaped vertical keels, then install the innermost ring keel, and then install the remaining vertical keels in sequence. After the vertical keels are installed, accurately install the remaining ring keels according to the position. All keels are spot welded, and full welding is performed after the assembly inspection is passed; Step 4: The circular steel structure is slid and installed as a whole. A winch is used as the traction equipment. The steel wire rope is A8.3mm steel wire rope and is respectively connected to the winch and the circular steel structure. Several jacks are set around the dome installation position. The circular steel structure is pulled to the dome installation position by the winch, and then the circular steel structure is lifted synchronously by several jacks. The sliding track is removed, and then the jacks are lowered to the installation height. The circular steel structure is welded to the embedded parts on the dome installation position, and finally the jacks are removed.
2. The method for integral sliding construction of a circular steel structure slope track according to claim 1, characterized in that: In the second step, the piers used to support the sliding track gradually decrease in height from the assembly area toward the dome installation position, ensuring that the sliding track has a slope of 2% to 3%.
3. The method for integral sliding construction of a circular steel structure slope track according to claim 1, characterized in that: In the step 2, limit blocks are further provided at both ends of the sliding track.
4. The method for integral sliding construction of a circular steel structure slope track according to claim 1, characterized in that: The step four also includes setting up a sliding assembly. The sliding assembly is composed of a sliding bracket and a bearing, and is vertically mounted on a sliding track. Grease is used for lubrication. The sliding assembly and the circular steel structure are fixed with steel cables.
5. The method for integral sliding construction of a circular steel structure slope track according to claim 1, characterized in that: In step 4, to ensure that the circular steel structure does not deform during the sliding process, six φ8.3mm steel wire ropes are tied along the center of the annular keel at its bottom and tightened with bolts and bayonets to fix the symmetrical points.