A method for positioning and erecting a dome framework

Abstract

This invention provides a method for fixed-point construction of a dome framework, comprising the following steps: Step S1, erecting a full-scale scaffold; Step S2, processing steel components, first cutting intersecting pipe ends, then joining steel components to the required length according to requirements, and labeling each steel component segment for sequential painting and hoisting; Step S3, laying out and measuring on the dome's foundation platform, and marking the anchor points of the longitudinal steel components; Step S4, hoisting a positioning and erection mechanism on the foundation platform, then using the hoisting and positioning and erection mechanism to assist in the sequential fixed-point hoisting of the longitudinal main steel components to the corresponding anchor points, and fixing the steel components to the corresponding anchor points during hoisting; Step S5, removing the positioning and erection mechanism. This invention can effectively improve the initial framework construction of the dome, promote the overall dome construction work, shorten the construction period, and accelerate the construction progress.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a method for fixed-point erection of a dome frame. Background Technology

[0002] With the development of building structures, various types of skylights (such as glass roofs and glass skylights) are increasingly being used and adopted. Currently, steel-structured glass skylights are commonly used to solve indoor lighting problems. Skylights are usually composed of a steel frame and glass.

[0003] Currently, spherical domes have a large number of steel components, making the construction process quite complicated, resulting in slow construction progress and a long construction period.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of the existing spherical dome, which has many components, a complicated construction process, slow construction progress, and a long construction period.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A method for fixed-point erection of a dome framework includes the following steps: Step S1, erecting a full-scale scaffold; Step S2, processing steel components, first cutting intersecting pipe ends, then joining steel components to the required length according to requirements, and labeling each steel component segment for sequential painting and hoisting; Step S3, laying out and measuring on the dome's foundation platform, and marking the anchor points of the longitudinal steel components; Step S4, hoisting and positioning the erection mechanism on the foundation platform, and then using the hoisting and positioning mechanism to assist the longitudinal main steel structure. The components are hoisted to their corresponding anchor points in sequence, and the steel components are fixed to the corresponding anchor points during hoisting; Step S5, the positioning and erection mechanism is removed. First, a crane is used to assist the workers in moving the positioning and erection mechanism from the interval between the meridian steel components to the roof, and then the positioning and erection mechanism is hoisted away from the roof; Step S6, the parallel steel components and other uninstalled steel components are installed between adjacent meridian steel components, and the final welding and fixing work is carried out; Step S7, the dome is erected, the glass is installed, and the scaffolding is dismantled.

[0008] In the dome frame fixed-point erection method described above, preferably, in step S4, the main steel component includes: a first keel, a second keel and a third keel, the first keel and the second keel intersect in a cross shape, and the second keel is broken in the middle and butt-welded to the middle part of the first keel.

[0009] Preferably, after the first keel and the second keel are assembled, the ring keel is installed immediately.

[0010] The center of the ring keel coincides with the intersection of the first keel and the second keel;

[0011] The third keel is butt-welded to the outer ring surface of the annular keel.

[0012] Preferably, the positioning and erection mechanism includes: a movable frame, a support arm, and a lift. The movable frame is provided in pairs, with the two movable frames positioned opposite each other at both ends of the support arm and offset from it, and the two movable frames are located on different sides.

[0013] Preferably, the elevator is installed on the mobile frame, and the lifting and lowering of the support arm is controlled by the elevator.

[0014] Preferably, the support arm includes a support plate and a side plate, wherein the support plate is arc-shaped to adapt to the shape of the main steel component;

[0015] The side plates are arranged in pairs, with the two side plates corresponding to each other on both sides of the tray along the length of the tray;

[0016] After the main steel component is erected and fixed, the position of the support arm is lowered by the elevator to prevent the newly erected main steel component from interfering with the support arm. Only then can the moving frame be pushed to rotate the support arm.

[0017] Preferably, the movable frame includes: a limiting plate, a base plate, and a support plate, wherein the limiting plate is U-shaped and the U-shaped groove of the limiting plate faces downward and is fastened to the base platform;

[0018] The U-shaped groove matches the thickness of the base platform, and the two side wings of the limiting plate extend downward so that the wall of the U-shaped groove contacts the side of the base platform.

[0019] Preferably, the base plate is horizontally disposed within the U-shaped groove, and the bottom surface of the base plate is a rolling surface, which is in close contact with the upper surface of the base platform.

[0020] Preferably, one end of the support plate is connected to the limiting plate, and the other end of the support plate extends above the base platform.

[0021] Preferably, the side plate has a notch in the middle to facilitate butt welding between the main steel components.

[0022] Beneficial effects: This invention can effectively improve the initial keel construction work of the dome, promote the construction of the overall dome, shorten the construction period, and speed up the construction progress. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein:

[0024] Figure 1 This is a schematic diagram of the dome of the present invention;

[0025] Figure 2 This is a schematic diagram of the welding between the second keel and the first keel structure of the present invention;

[0026] Figure 3 This is an overall schematic diagram of the positioning and erection structure of the present invention;

[0027] Figure 4 This is a top view of the positioning and erection structure of the present invention;

[0028] Figure 5 This is a front view of the positioning and erection structure of the present invention;

[0029] Figure 6 This is a bottom view of the base plate structure of the present invention;

[0030] Figure 7 This is a schematic diagram of step S4.8 of the present invention.

[0031] In the diagram: 1. Foundation platform; 2. Anchor point; 3. First keel; 4. Second keel; 5. Third keel; 6. Ring keel; 7. Lifting platform; 8. Support plate; 9. Side plate; 10. Limiting plate; 11. Base plate; 12. Support plate; 13. Connecting plate; 14. Carrier plate. Detailed Implementation

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art are within the scope of protection of the present invention.

[0033] In the description of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0035] Example

[0036] Step S1: Erect full-courtyard scaffolding;

[0037] Step S2, steel component processing: First, cut the intersecting pipe openings, then connect the steel components to the required length according to the requirements, and label each steel component so that the steel components can be painted and hoisted in sequence.

[0038] Step S2.1: Use software to complete the data such as the length and intersection line of the steel components and generate the cutting drawing;

[0039] Step S2.2: The unfolded diagram of the intersection line is drawn on a transparent plastic film at a 1:1 scale using a computer to create a template for inspection. The template is marked with the pipe fitting number. During inspection, the template is placed tightly against the pipe opening of the intersection line according to the "top, bottom, left, right" line markings to check the degree of fit. A designated person is assigned to check the length in the drawing to inspect each cut rod and fill in the record.

[0040] Step S2.3: Since the length of the purchased steel pipes is generally 12m, some steel components need to be extended by butt joints.

[0041] Step S3, refer to Figure 1 On the foundation platform 1 of the dome, the line was laid out and the anchor point 2 of the steel component along the meridian was marked.

[0042] Step S4, refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 The positioning and erection mechanism is hoisted on the foundation platform 1. Then, the main steel components in the longitudinal direction are hoisted and erected sequentially at the corresponding anchor points 2 using the hoisting and positioning and erection mechanism. During the hoisting and erection, the steel components are fixed to the corresponding anchor points 2.

[0043] Step S4.1, the positioning and erection mechanism includes: a movable frame, a support arm and a lift 7. The movable frame is a pair, and the two movable frames are positioned opposite each other at both ends of the support arm and are offset from it. The two movable frames are set on different sides, which is to facilitate the subsequent overall rotation of the positioning and erection mechanism.

[0044] Step S4.2, the support arm includes: a support plate 8 and a side plate 9. The support plate 8 is arc-shaped to adapt to the shape of the main steel component. The side plates 9 are arranged in pairs, with the two side plates 9 corresponding to each other on both sides of the support plate 8 along the length direction of the support plate 8. The two ends of the support arm face the anchor point 2 on the foundation platform 1. The middle part of the side plate 9 is provided with a notch so that the main steel components can be butt welded together.

[0045] Step S4.3, the movable frame includes: a limiting plate 10, a base plate 11, and a support plate 12. The limiting plate 10 is U-shaped, with the U-shaped groove of the limiting plate 10 facing downwards and fastened to the base platform 1. The U-shaped groove matches the thickness of the base platform 1. The base plate 11 is horizontally positioned inside the U-shaped groove. The bottom surface of the base plate 11 is a rolling surface, which is in close contact with the upper surface of the base platform 1. The two side wings of the limiting plate 10 extend downwards so that the wall of the U-shaped groove contacts the side of the base platform 1. Thus, the traveling trajectory of the rolling surface of the base plate 11 is consistent with the surface of the base platform 1 through the limiting plate 10, preventing the movable frame from detaching from the base platform 1. One end of the support plate 12 is welded and fixed to the limiting plate 10, and the other end of the support plate 12 extends towards the upper middle part of the base platform 1. The support plate 12 is arc-shaped, and its curvature is consistent with that of the support plate 8.

[0046] Step S4.3.1: A connecting plate 13 extends horizontally from the upper front of the side plate 9 adjacent to the support plate 12. An L-shaped carrier plate 14 extends downward from the bottom of the support plate 12. The horizontal panel of the carrier plate 14 corresponds to the connecting plate 13 above. The elevator 7 is fixed on the horizontal panel. The elevator 7 can use an electric telescopic rod. The output end of the elevator 7 is connected to the lower plate surface of the connecting plate 13. The elevator 7 is used to control the vertical displacement of the support arm. By setting the connecting plate 13 at the upper front of the side plate 9, the downward movement distance of the support arm can be increased so that the support arm can be completely freed from the restriction of the main steel component.

[0047] Step S4.4: Hoist the main steel components, which include the first keel 3, the second keel 4, and the third keel 5. Move the rolling surface of the base plate 11 along the foundation platform 1 to rotate the entire positioning and erection mechanism so that the end of the support arm corresponds to the anchor point 2 of the first keel 3 on the foundation platform 1. Adjust the height of the support arm by using the elevator 7, and then hoist the first keel 3 directly onto the support plate 8 of the support arm. The side plates 9 on both sides of the support arm restrict the first keel 3 from tilting to one side, ensuring the stability of the first keel 3. At the same time, there is no need to assign a special person to straighten the first keel 3, reducing manpower consumption. At this time, the height of the support arm is just right so that the positioning ends of the first keel 3 at both ends contact the corresponding anchor points 2. Therefore, after the first keel 3 is hoisted, it can be positioned directly.

[0048] Step S4.5: Lowering the second keel 4. First, use the lift 7 to lower the support arm until the first keel 3 is completely detached from the support arm. Then, push the moving plate to rotate the support arm counterclockwise, aligning the end of the support arm with the anchor point 2 of the second keel 4 on the foundation platform 1. Next, adjust the height of the support arm using the lift 7, and use a crane to directly lower the second keel 4 onto the support plate 8 of the support arm. The side plates 9 on both sides of the support arm prevent the second keel 4 from tilting to one side, ensuring its stability. This also eliminates the need for dedicated personnel to straighten the second keel 4, reducing manpower consumption. At this point, the height of the support arm... This also allows the positioning ends of the second keel 4 to contact the corresponding anchor points 2. Therefore, after the second keel 4 is hoisted, it can be positioned directly. The second keel 4 is split in two. The second keel 4 and the middle of the first keel 3 can be welded together. The notch reserved in the middle of the side plate 9 is to prevent interference from the first keel 3 and the subsequent ring keel 6, which would prevent normal operation. Because the erection height of the main steel components is consistent, it is necessary to ensure that when the last third keel 5 is installed, the notch reserved in the middle of the side plate 9 still meets the requirement that the height of the support arm is consistent with the height when the first keel 3 is installed.

[0049] Step S4.6: Install the ring keel 6. The ring keel 6 should be prepared in advance and placed at the top of the scaffolding, as this position is also the closest to the installation position of the ring keel 6 on the dome. Since the first keel 3 and the second keel 4 intersect in a cross shape, the ring keel 6 needs to be divided into four parts and placed at the four corners formed by the intersection of the first keel 3 and the second keel 4, so that the two ends of each part of the ring keel 6 are butt welded to the first keel 3 and the second keel 4 respectively.

[0050] Step S4.7: Hoist the third keel 5. First, use the lift 7 to lower the support arm until the second keel 4 is completely detached from the support arm. Then, push the moving plate to rotate the support arm counterclockwise until it is aligned with the nearest anchor point 2. Ensure that the end of the support arm corresponds to the anchor point 2 to prevent readjustment after hoisting the third keel 5. Then, adjust the height of the support arm using the lift 7 and use a crane to hoist the third keel 5 directly onto the support plate 8 of the support arm. The side plates 9 on both sides of the support arm restrict the third keel 5 from tilting to one side, ensuring its stability. This also eliminates the need for a dedicated person to straighten the third keel 5, reducing manpower consumption. At this time, the height of the support arm is just right so that the positioning ends of the third keel 5 are in contact with the corresponding anchor points 2. Therefore, the third keel 5 can be positioned directly after hoisting it.

[0051] Step S4.8, refer to Figure 7The repositioning of the positioning and erection mechanism: After the anchor point 2 of the adjacent first keel 3 is fixed to the third keel 5, there are still some areas where the third keel 5 has not been erected. With the assistance of a crane, the positioning and erection mechanism is first suspended in the air and removed from the restriction of the foundation platform 1. Then it is moved to the area where the third keel 5 has not been installed so that the remaining part can be erected again.

[0052] Step S5: Remove the positioning and erection mechanism. First, use a crane to assist the workers in moving the positioning and erection mechanism from the meridian to the gap of the steel components to the roof. Then, lift the positioning and erection mechanism off the roof.

[0053] Step S6: Install the weft steel members and other uninstalled steel members between adjacent meridian steel members, and perform the final butt welding fixation operation.

[0054] Step S7: After the dome is erected and the glass is installed, the scaffolding covering the entire atrium is removed.

[0055] When constructing the dome, apart from the first keel 3 being a single piece, the second keel 4 and the third keel 5 are both disassembled parts that have been split in two. If traditional methods are used for hoisting, alignment, and welding, it will inevitably consume a great deal of labor, making the construction process cumbersome and time-consuming. However, by implementing this construction method, the time spent on hoisting, aligning, and welding the main steel components can be greatly reduced, and the manpower requirement will not increase. In terms of both cost and time, this construction method has obvious positive benefits.

[0056] It is understood that the above description is merely exemplary and the embodiments of this application do not limit the scope of the application.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention shall be within the scope of protection of the pending claims of the present invention.

Claims

1. A method for fixed-point construction of a dome framework, characterized in that, Includes the following steps: Step S1: Erect full-courtyard scaffolding; Step S2, steel component processing: First, cut the intersecting pipe openings, then connect the steel components to the required length according to the requirements, and label each steel component so that the steel components can be painted and hoisted in sequence. Step S3: Lay out the lines and measure on the foundation platform of the dome, and mark the anchor points of the steel components along the meridian. Step S4: The positioning and erection mechanism is hoisted onto the foundation platform. Then, the main steel components along the meridian are hoisted and erected sequentially at the corresponding anchor points using the hoisting and positioning and erection mechanism. During the hoisting and erection process, the steel components are fixed to the corresponding anchor points. The positioning and erection mechanism includes: a movable frame, a support arm, and a lift. The movable frame is provided in pairs, with the two movable frames positioned opposite each other at both ends of the support arm and offset from it, and the two movable frames are positioned on different sides. The lifting platform is installed on the mobile frame, and the lifting and lowering of the support arm is controlled by the lifting platform; The support arm includes a support plate and a side plate, wherein the support plate is arc-shaped to adapt to the shape of the main steel component; The side plates are arranged in pairs, with the two side plates corresponding to each other on both sides of the tray along the length of the tray; After the main steel component is erected and fixed, the position of the support arm is lowered by the elevator to prevent the newly erected main steel component from interfering with the support arm. Only then can the moving frame be pushed to rotate the support arm. Step S5: Remove the positioning and erection mechanism. First, use a crane to assist the workers in moving the positioning and erection mechanism from the meridian to the gap of the steel components to the roof, and then lift the positioning and erection mechanism off the roof. Step S6: Install the weft steel members and other uninstalled steel members between adjacent meridian steel members, and perform the final butt welding fixation operation. Step S7: The dome is erected and the glass is installed. After that, the scaffolding in the courtyard is removed.

2. The method for fixed-point construction of a dome frame according to claim 1, characterized in that, In step S4, the main steel component includes: a first keel, a second keel, and a third keel. The first keel and the second keel intersect in a cross shape, and the second keel is broken in the middle and welded to the middle part of the first keel.

3. The method for fixed-point construction of a dome frame according to claim 2, characterized in that, After the first keel and the second keel are assembled, the ring keel is then installed. The center of the annular keel coincides with the intersection of the first keel and the second keel; The third keel is butt-welded to the outer ring surface of the annular keel.

4. The method for fixed-point construction of a dome frame according to claim 1, characterized in that, The mobile frame includes: a limiting plate, a base plate, and a support plate. The limiting plate is U-shaped, and the U-shaped groove of the limiting plate is facing downwards and fastened to the base platform. The U-shaped groove matches the thickness of the base platform, and the two side wings of the limiting plate extend downward so that the wall of the U-shaped groove contacts the side of the base platform.

5. The method for fixed-point construction of a dome frame according to claim 4, characterized in that, The base plate is horizontally positioned within the U-shaped groove, and the bottom surface of the base plate is a rolling surface that is in close contact with the upper surface of the base platform.

6. The method for fixed-point construction of a dome frame according to claim 4, characterized in that, One end of the support plate is connected to the limiting plate, and the other end of the support plate extends above the base platform.

7. The method for fixed-point construction of a dome frame according to claim 1, characterized in that, The side plate has a notch in the middle to allow for butt welding between the main steel components.

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