WO2022253310A1

WO2022253310A1 - High-altitude rotating construction method for large venue steel canopy

Info

Publication number: WO2022253310A1
Application number: PCT/CN2022/096822
Authority: WO
Inventors: 黄晨光; 陈凯; 贾新卷; 桂峥嵘; 张在晨; 莫海钊; 季永新; 崔立会; 陈学朋; 蔡龙钰; 秦锴; 周靖康; 赵绪华
Original assignee: 中国建筑第四工程局有限公司
Priority date: 2021-06-04
Filing date: 2022-06-02
Publication date: 2022-12-08
Also published as: CN113235946B; CN113235946A

Abstract

Disclosed is a high-altitude rotating construction method for a large venue steel canopy, which relates to the technical field of architectural engineering. The steel canopy is divided into a roof canopy and a façade canopy, and the roof canopy is divided into n rotating structural units; after construction of a main concrete structure of a venue is complete, construction of the façade canopy begins; meanwhile, a horizontal joint supporting jig frame is mounted on a stand structure, lifting frames are mounted inside of the venue, and three horizontal contact beams are disposed at different elevations of a front lifting frame; after mounting of the horizontal joint supporting jig frame is complete, the façade canopy and the rotating structural units are assembled and provided with a limiting apparatus; and a lifting device is mounted on the lifting frames, the lifting devices and a core-penetrating oil cylinder are connected by using a fastening cable, the rotating structural units continue to be rotated and lifted to design elevations, welding rotating hinges are packaged, and then rod pieces between the rotating structural units are embedded and mounted. In the present invention, the amount of high-altitude work is significantly reduced, construction efficiency and the construction safety coefficient are improved, and construction quality is also ensured.

Description

A high-altitude rotating construction method for steel canopies of large venues

technical field

The invention relates to the technical field of construction engineering, in particular to a high-altitude rotating construction method for a large-scale stadium steel shed.

Background technique

In recent years, with the further development of large-scale public cultural venues in my country, steel canopies have emerged with new features such as complex structure types, novel shapes, large component sizes, heavy rod weights, large structural spans, and super high installation heights. At present, the common construction methods for the installation of steel canopies in large venues include high-altitude bulk method, strip or block installation method, high-altitude sliding method, overall hoisting method, overall lifting method, and overall jacking method.

The high-altitude bulk method refers to the method of assembling small units or parts (single rods and single nodes) directly at the design position. It is suitable for various types of grids with bolted joints, especially for difficult lifting situations. , its construction focus is to determine a reasonable assembly sequence, control the elevation and the position of the axis.

The high-altitude sliding method refers to the installation method in which the divided grid units are slid single (or one by one) on the pre-set slide rails to the design position and spliced into a whole. It is suitable for grids such as square pyramids placed upright, evacuated square pyramids placed upright, and quadrangular pyramids placed orthogonally in two directions. When sliding, the sliding unit should be guaranteed to be a geometrically invariant system.

To sum up, the high-altitude bulk method is the general assembly at the design position, and the high-altitude slip method is the cumulative sliding assembly at the design elevation. Both of these two installation methods require a large number of supporting tire frames, a large amount of high-altitude welding, a large amount of high-altitude hoisting work, and high requirements for precision control. After using these two installation methods, it is often necessary to invest a lot of time due to the constraints of the construction period. Manpower, material resources, etc., its construction quality and construction safety are also difficult to be guaranteed. The strip or block installation method and the overall hoisting method refer to hoisting the assembled unit to the design position with the help of lifting equipment. These two installation methods are affected by the lifting capacity and hoisting range of the hoisting equipment. The heavy capacity is also complementary to its own weight, and it has higher requirements on the carrying capacity of the walking track. The overall lifting method and the overall jacking method are generally applicable to regular multi-point support grids, and the overall jacking method is also affected by the stroke of the jacking equipment.

For the steel canopy of large-scale venues with large component size, heavy weight of rods, large structural span and super high installation height, especially the steel canopy with super long cantilever giant ribbed space folded plate grid structure, the existing steel canopy is used The canopy installation method has been difficult to meet the installation requirements of this type of steel structure engineering, so it is necessary to provide a high-altitude rotary construction method for large-scale venue steel canopies.

Contents of the invention

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A high-altitude rotary construction method for a large-scale stadium steel canopy, comprising the following steps:

S1: Divide the steel shed into a roof shed and a facade shed, and divide the roof shed into n rotating structural units;

S2: After the construction of the main concrete structure of the stadium is completed, the construction of the facade cover canopy will start. Set up three horizontal connecting beams at different elevations;

S3: After the installation of the horizontal support frame is completed, assemble the facade cover shed and the rotating structural unit on the horizontal support frame and set a limit device;

S4: Install lifting equipment on the front lifting frame and the rear lifting frame, and connect the lifting equipment and the through-hole oil cylinder with a buckle cable;

S5: After all the rotating installation procedures are ready, release the limit device set when assembling the rotating structural unit horizontally;

S6: Continue to rotate and lift the rotating structural unit to the design elevation according to the planned lifting speed, and at the same time, continuously adjust the position of the through-hole cylinder on the lifting frame;

S7: After all the rotating structural units are lifted to the design elevation and the corresponding limit devices are installed, the rods between the rotating structural units are interlocked and installed by using the lifting equipment;

S8: After the installation of all embedded rods is completed, remove the limit device installed when the rotation is installed in place, and complete the system conversion of the steel canopy.

Further, the façade canopy in step S1 is installed by high-altitude bulk method.

Further, the division of the rotating structural units in the step S1 is symmetrical, and it is ensured that each of the rotating structural units is a geometrically invariable system and stable in a plane.

Further, the three transverse connecting beams in step S2 are called the low zone horizontal connecting beams, the middle zone horizontal connecting beams and the high zone horizontal connecting beams sequentially from bottom to top.

Further, in the step S3, two hinges are arranged at the connection between each rotating structural unit and the facade canopy, and the two hinges are arranged on the same level and are concentric and coaxial.

Further, in step S3, a suitable pulling point is selected in the rotating structural unit, and the pulling point includes a rear pulling point and two front pulling points, and the two front pulling points are on the same elevation and reach The distances between the centers of the two hinges are equal.

Further, in step S4, the length of the buckle connected to the rotating structural unit is the same, and it is ensured that the buckle acting on the rotating structural unit is always kept vertical and in one plane.

Further, monitoring instruments are installed on the rotating system composed of the rotating structural unit and the façade canopy.

Further, in the step S5, after the limit device of the rotating structural unit is assembled horizontally and assembled, check whether the rotating system is complete and good; The rotating structural unit is tested to be rotated and lifted by 100mm and left to stand for one day.

Further, in step S6, the rotating structural units are installed using a rotating and lifting construction method, and the rods between the rotating structural units are installed using hoisting equipment.

The beneficial effects of the present invention are:

The present invention utilizes the structure form of the stand in the field, and installs the horizontal support tire frame along the structure form of the stand, which significantly reduces the installation height of the horizontal support tire frame;

The invention assembles the rotating structural unit at low altitude, which significantly reduces the workload at high altitude, improves the construction efficiency and construction safety factor, and also ensures the construction quality;

The present invention always keeps the buckle cable vertically upward, avoiding the generation of horizontal force and affecting the safety and stability of the lifting frame;

In the present invention, the time for rotating the rotating structural unit to be in place is short, the rotating angle is large, and the rotating height is high, and the rotating structural unit has large space size and heavy weight.

Description of drawings

Figure 1 is a schematic diagram of the elevation of the steel canopy divided into a roof canopy and a facade canopy.

Fig. 2 is a schematic plan view of the steel canopy divided into a roof canopy and a facade canopy.

Fig. 3 is a schematic plan view of the roof shed divided into rotating structural units.

Fig. 4 is a schematic cross-sectional view of the rotating structural unit in a lying state and in a rotating state.

Fig. 5 is a schematic diagram of a rotating structural unit.

Fig. 6 is a schematic diagram of the plane layout of the lifting frame, the hinge, the embedded rod, and the lifting point.

Among them, in the figure:

1-roof canopy; 2-facade canopy; 3-rotating structural unit; - rear lifting frame; 10 - buckle lock; 11 - lifting equipment; 12 - horizontal connecting beam in low area; 13 - horizontal connecting beam in middle area; 14 - horizontal connecting beam in high area.

Detailed ways

The technical solutions of the present invention will be further described below through the accompanying drawings and embodiments.

Example 1

In order to improve the construction efficiency and safety factor of the steel canopy for large-scale venues, reduce the amount of high-altitude work, and ensure the construction quality, the present invention provides a high-altitude rotary construction method for the steel canopy of large-scale venues, which will be described in detail below in conjunction with accompanying drawings 1-6 and embodiments Specific implementation of the program.

A high-altitude rotary construction method for a large-scale stadium steel canopy, the steps of which are as follows:

S1: As shown in Figure 1-2, according to the structural characteristics and stress forms of the steel canopy, the steel canopy is divided into a roof canopy 1 and a facade canopy 2; the roof canopy 1 is divided into 8 rotating structural units 3, The divided 8 rotating structural units 3 are symmetrical, and ensure that the rotating structural units 3 are geometrically invariable systems and stable in the plane, and then number the rotating structural units 3 as 1# unit, Units 2#, ..., 8#, as shown in Figure 3; wherein, the rotating structural unit 3 in the roof shed 1 is installed by a rotating and lifting construction method, and the facade shed 2 is installed by a high-altitude bulk method.

S2: After the construction of the main concrete structure of the stadium is completed, the construction of the facade cover 2 starts, and at the same time, the horizontal support frame 4 is installed on the stand structure, and the lifting frame is installed in the field. The lifting frame includes the front lifting frame 8 and Rear lifting frame 9; in order to save the construction period, after the concrete main structure of the stadium is constructed to a certain storey height, in the area of the concrete main structure that has been constructed, the facade cover shed 2, the horizontal support tire frame 4 and the Describe the construction of the lifting frame.

S3: After the installation of the horizontal support frame 4 is completed, assemble the facade cover shed 2 and the rotating structural unit 3 on the horizontal support frame 4 and set a corresponding limit device, as shown in Figure 4 shown; after the completion of the construction of the facade canopy 2 and the rotary structure unit 3, two hinges 5 are set at the connection between the rotary structure unit 3 and the facade canopy 2, and the two hinges 5 are set on the same elevation, and ensure that the two hinges are concentric and coaxial, and at the same time select a suitable lifting point on the reasonable position of the rotating structural unit 3, and the pulling point is on the same elevation and reaches The distances between the centers of the two hinges 5 are equal, and then the lifting device is installed on the lifting point. In this embodiment, two front pull points 6 and one rear pull point 7 are selected at the reasonable position of the rotating structural unit, and the front pull devices installed on the two front pull points 6 are set at the same elevation and the same distance to the line connecting the centers of the two hinges.

S4: After the lifting frame is installed, install lifting equipment on the lifting frame, and then use the buckle cable 10 to connect the lifting device and the through-the-center oil cylinder. The length of the buckle cable 10 connected to the rotating structural unit 3 is consistent, and ensure The buckle cable 10 acting on the rotating structural unit 3 is always kept vertical and in one plane, so as to ensure that the rotating structural unit 3 is lifted synchronously during the rotation, and at the same time avoid generating horizontal force and affecting the lifting frame. stability. In addition, a monitoring instrument is installed on the rotating system composed of the rotating structural unit 3 and the façade canopy 2 to dynamically monitor the changes of the rotating system during the rotating installation process. In this embodiment, 8 groups of lifting frames are arranged in total, and each group of lifting frames includes a front lifting frame 8 and a rear lifting frame 9, and a group of lifting frames is arranged on each of the rotating structural units 3, and the front lifting frames Three horizontal connecting beams are set at different elevations on the frame 8, which are called the low area horizontal connecting beam 12, the middle area horizontal connecting beam 13, and the high area horizontal connecting beam 14 from bottom to top. The purpose of setting three horizontal connecting beams It is to enhance the overall stability of the front lifting frame. The reason for arranging the rear lifting frame 9 is that each of the rotating structural units 3 has three connection nodes with the facade cover 2, the connection nodes on both sides are provided with hinges 5, and the middle nodes are disconnected. The opened bar is relatively long and heavy, and the rear lifting frame 9 is set to pull the disconnected bar to reduce the self-weight deformation of the bar, as shown in Figure 4 .

S5: After all the preparations for the rotating installation process are completed, release the limit device set when assembling the rotating structural unit 3 horizontally, and check the rotation after the limit device on the rotating structural unit 3 is assembled horizontally. Whether the system is complete and good; after checking that the rotating system is intact, in the case of no wind or light wind and good weather, start to try to rotate and lift the rotating structural unit by 100mm and let it stand for a day; in this embodiment, test according to group symmetry Rotating and rotating structural units, among which 1# unit and 5# unit belong to group A, 3# unit and 7# unit belong to group B, 2# unit, 4# unit, 6# unit and 8# unit belong to group C, In the process of trial rotation and lifting, try rotating and lifting groups A, B, and C in sequence.

S6: After the rotating and lifting stage to be tested is over, continue to rotate and lift the rotating structural unit 3 to the design elevation according to the proposed lifting speed; in the rotating and lifting stage in this embodiment, rotate and lift groups A, B, and C in sequence , at the same time, since the front lifting frame 8 is provided with three transverse connecting beams, and the rotating structural unit 3 falls in the front lifting frame 8, during the rotation lifting process, the horizontal connecting beams need to be dismantled . The process of reinstallation. The specific implementation method is that when the rotating structural unit 3 is rotated and lifted close to the horizontal connecting beam 13 in the middle area, it is removed, and then the rotating structural unit 3 is rotated and lifted. After the unit 3 is rotated and lifted higher than the horizontal connecting beam 13 in the middle area, the horizontal connecting beam 13 in the middle area is reinstalled, and the horizontal connecting beam 14 in the high area is also dismantled and reinstalled according to this step, and the If the horizontal connecting beam 12 in the low area is lower than the rotating structural unit 3, this step does not need to be carried out; in addition, it is necessary to constantly adjust the position of the through-hole oil cylinder on the front and rear lifting frames so that it is in the radial direction of the corresponding lifting point. The sliding distance is consistent to ensure that the buckle cable 10 is always kept vertically pulled.

S7: After the rotating structural unit 3 is rotated and lifted to the design elevation, a limit device is installed to prevent the rotating structural unit 3 from swinging in the air. At the same time, the hinge 5 is packaged and welded so that the rotating structural unit 3 and The joints of the outer canopy are complete to ensure that the nodes meet the structural force requirements; after the sealing and welding of the hinge 5 is completed, the rods between the rotating structural units 3 are interlocked and installed with lifting equipment.

S8: After all the embedded rods are installed, remove the limit device installed when the rotary installation is in place, release the lifting force step by step according to the proposed unloading method, and complete the system conversion of the steel canopy, and after the system conversion of the steel canopy is completed , remove the temporary support measures.

The present invention utilizes the structure form of the stand in the stadium, and installs the horizontal support tire frame 4 along the structure form of the stand, which significantly reduces the installation height of the horizontal support tire frame 4; and assembles the rotating structural unit 3 at low altitude, which significantly reduces the amount of high-altitude operations , which improves the construction efficiency and construction safety factor, and also ensures the construction quality; during various lifting and rotating installation processes, the buckle cable 10 is always pulled vertically upwards, avoiding the generation of horizontal force and affecting the safety and stability of the lifting frame .

The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention in any way, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to within the scope of the technical solutions of the present invention.

Claims

A high-altitude rotary construction method for a large-scale stadium steel canopy, characterized in that it includes the following steps:

S1: dividing the steel shed into a roof shed (1) and a facade shed (2), and dividing the roof shed (1) into n rotating structural units (3);

S2: After the construction of the main concrete structure of the stadium is completed, the construction of the façade canopy (2) starts, and at the same time, the horizontal support frame (4) is installed on the stand structure, and the front lifting frame (8) and the rear lifting frame are installed in the venue. Frame (9), and three horizontal connecting beams are set at different elevations of the front lifting frame (8);

S3: After the horizontal support frame (4) is installed, assemble and install the facade cover (2) and the rotating structural unit (3) on the horizontal support frame (4) Limiter;

S4: Install the lifting device (11) on the front lifting frame (8) and the rear lifting frame (9), and connect the lifting device (11) and the through-hole oil cylinder with a buckle cable (10);

S5: After all the rotating installation procedures are ready, release the limit device set when assembling the rotating structural unit (3) horizontally;

S6: Continue to rotate and lift the rotating structural unit (3) to the design elevation according to the planned lifting speed, and at the same time, continuously adjust the position of the through-hole oil cylinder on the lifting frame;

S7: After all the rotating structural units (3) are lifted to the design elevation and the corresponding limit devices are installed, the hinges are packaged and welded, and then the rods between the rotating structural units (3) are interlocked and installed by lifting and hoisting equipment pieces;

S8: After the installation of all embedded rods is completed, remove the limit device installed when the rotation is installed in place, and complete the system conversion of the steel canopy.
A high-altitude rotary construction method for a large-scale stadium steel canopy according to claim 1, characterized in that the facade canopy (2) in step S1 is installed by high-altitude bulk method.
A high-altitude rotary construction method for a large-scale stadium steel canopy according to claim 2, characterized in that the division of the rotary structural units (3) in the S1 step is symmetrical, and it is ensured that each of the rotary structural units (3) is The geometrically invariable system is stable in the plane.
According to claim 3, a high-altitude rotary construction method for large-scale stadium steel sheds, it is characterized in that, the three transverse connecting beams described in the step S2 are called the low zone horizontal connecting beam (12), the middle zone successively from bottom to top. Horizontal connecting beam (13) and high zone horizontal connecting beam (14).
The high-altitude rotary construction method for a large-scale stadium steel canopy according to claim 4, characterized in that, in the step S3, two joints are arranged at the connection between each said rotary structural unit (3) and said facade canopy (2). A hinge (5), the two hinges (5) are arranged on the same level and are concentric and coaxial.
According to claim 5, a high-altitude rotary construction method for large-scale stadium steel sheds, characterized in that, in the step S3, a suitable lifting point is selected in the rotating structural unit (3), and the lifting point includes a post-lifting point (7) and two front pull points (6), the two front pull points (6) are on the same elevation and have equal distances to the center line of the two hinges.
A high-altitude rotary construction method for large-scale stadium steel sheds according to claim 6, characterized in that, in the step S4, the lengths of the buckles (10) connected to the rotary structural units (3) are the same, and the effect is ensured. The buckle cable (10) on the rotating structural unit (3) is always kept vertical and in one plane.
The high-altitude rotating construction method of a large-scale stadium steel canopy according to claim 7, characterized in that monitoring instruments are installed on the rotating system composed of the rotating structural unit (3) and the facade canopy (2).
According to claim 8, a high-altitude rotary construction method for large-scale stadium steel sheds, it is characterized in that, in step S5, after the limit device of the rotary structural unit (3) is assembled horizontally and assembled, it is checked whether the rotary system is Complete and good; after the rotating system is inspected intact, in good weather, the rotating structural unit (3) is lifted by 100mm for trial rotation and left to stand for a day.
A high-altitude rotary construction method for large-scale stadium steel sheds according to claim 9, characterized in that the rotary structural unit (3) in step S6 is installed by a rotary lifting construction method, and the distance between the rotary structural units (3) The rods are hoisted and installed by hoisting equipment.