CN116122579A - Hoisting method for bidirectional bending dome bracket - Google Patents

Abstract

The invention discloses a method for hoisting a two-way twisted dome bracket, and relates to the technical field of building construction methods. The method for hoisting a two-way twisted dome bracket includes the following steps: step 1: construction of a basement foundation pit; step 2: construction of a steel frame truss Step 3: installation of the roof structure, the step 2 also includes: after the installation of the main steel structure on both sides of the truss is completed, a stable frame system is formed, and at the same time the temporary support of the truss is installed in place and passed the inspection, the tower crane on site is used to start the truss Rod lifting. The present invention divides the truss into sections by considering factors such as the weight of the truss, the distribution position, the performance of the tower crane, and the transportation conditions. , to facilitate production and installation, try to avoid crossing and overlapping weld seams, reduce welding stress concentration and on-site welding volume.

Description

A method for hoisting two-way curved and twisted dome brackets

technical field

The invention relates to the technical field of building construction methods, in particular to a method for hoisting a two-way curved and twisted dome support.

Background technique

The hoisting of the dome structure of a building is an important part of the construction project, and it is also one of the most difficult and demanding parts in the building construction process. It is directly related to the progress of the project, the quality of the building and the cost of construction. The type structure refers to the suspended hemispherical space or area, which is usually built on the top of buildings such as public places and large venues. The steel structure dome means that all radial beams and ring beams of the dome are welded by steel pipes. Lightweight, fast installation, good seismic performance, less environmental pollution, etc., the steel structure dome has the advantages of large internal space, good strength and stability, and novel and beautiful shape. It not only forms a light and lively architectural form based on fresh, bright and modern, breaking the solemnity and dullness brought by the concrete box, but also pursues the majestic overall shape of the building, which is full of neoclassical French style.

In the existing technical scheme, a public number: CN111335649B is proposed, a hoisting method of a dome structure of a building, by pouring a hoisting support platform and an anchor platform in the building, and then building a ring beam support tower on the hoisting support platform and The ring beam supporting tower is anchored by steel cables, anchors and anchoring platforms, and then the ring beam bracket is built on the top of the ring beam supporting tower, and the ring beam sections are hoisted by the crane in stages, and each ring beam section is carried by the ring beam bracket. Then it is spliced on the ring beam bracket to form a ring beam.

In order to solve the problem that production and transportation equipment usually needs to be installed inside and on the top of the building, the dome structure is very complicated, so the difficulty of hoisting the dome structure becomes very difficult. The top shelf piece, so that one end of the top shelf piece is lapped on the ring beam, and the other end is connected with the building wall/frame body, and then the top shelf pieces are connected through the top shelf components to make it a whole top shelf, and it is connected with the ring beam. The beams are connected to form a dome structure, and then all auxiliary devices are removed to complete the hoisting of the building dome structure, but there will also be problems in the truss installation scheme due to the difference in the center of gravity, which will lead to the transportation of the truss structure And when hoisting, it cannot be deformed.

Contents of the invention

The present invention provides a method for hoisting a two-way curved and twisted dome support to solve the problems raised in the above-mentioned background technology.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A method for hoisting a two-way curved and twisted dome support, the method for hoisting a two-way curved and twisted dome support includes the following steps:

Step 1: Construction of basement pit;

Step 2: Steel frame truss construction;

Step 3: Installation of the roof structure.

Said step 2 also includes:

(1) After the main steel structure on both sides of the truss is installed to form a stable frame system, and the temporary support of the truss is installed in place and passed the inspection, use the on-site tower crane to start hoisting the truss members;

(2) Lay temporary support embedded parts before pouring concrete on the F1 floor;

(3) The trusses are hoisted in sequence from bottom to top, including the lower chord, upright column, upper chord, and diagonal bracing. At the same time, after the overall installation of the chord is in place, install the connecting steel beams between each truss to ensure the overall integrity of the truss during installation. stability;

(4) Components are positioned using a high-precision total station for measurement and positioning;

(5) The hoisting is carried out sequentially from west to east. After the truss chords are installed, the floor steel beams between the adjacent structures are installed immediately to ensure the lateral stability of the trusses during installation;

(6) All welding of the truss structure is completed, and the concrete pouring of the upper floor of the truss can only be carried out after the unloading is completed and the temporary support is removed.

The further improvement of the technical solution of the present invention is that: said step 1 also includes:

S1: According to the building construction, carry out the construction of the basement concrete structure, and use the tower crane to install the underground steel column embedded parts and steel column sections, and then carry out the construction of the basement concrete;

S2: According to the bottom-up construction plan, the installation of the first-floor stiffened steel beams and the construction of the first-floor concrete, and the section-wise installation of the aboveground steel columns of the main building;

S3: The truss members are processed and manufactured in sections to reduce the length of the transported parts and facilitate the transportation of steel structural parts. The trusses are constructed on-site with temporary supports to assist in-situ high-altitude assembly.

The further improvement of the technical solution of the present invention lies in: the steel column is hoisted, installed with anchor bolts, the base plate is poured, and after the concrete of the base plate reaches the strength, the hoisting of the first stiff steel column is started, the steel column is positioned and adjusted, and the steel column is installed. After being in place, the foundation anchor bolts are poured twice.

The further improvement of the technical solution of the present invention lies in: before the hoisting, tie palm ropes at both ends of the truss rods as slip ropes, which is conducive to maintaining the balance of the rods in the air and improving installation efficiency. Hang it twice during the interview, about 5cm from the ground, and observe whether it is horizontal and skewed. After a trial lifting balance, it can be formally lifted.

The further improvement of the technical solution of the present invention is: before the hoisting, the dirt on the surface of the bar should be cleaned; the connecting plate and the friction surface that generate floating rust should be derusted before hoisting, and the welding positioning plate is welded on the end of the bar , Before hoisting the rods, pay attention to the positive and negative directions and horizontal direction of the rods, and clearly mark them to ensure correct installation.

The further improvement of the technical solution of the present invention lies in that: during the hoisting, the initial positioning of the components is completed under the observation of the total station through adjustment measures such as the tire frame, the reverse chain, the rigid support, and the jack, and the components are fixed by the temporary connecting plate. Fix it before hoisting the next member. The axis control of the truss member: mark the center line of each member before hoisting. The girder is leveled and corrected, and the rods can be corrected by means of jacks, chain hoists, etc. Once the calibration is in place, the positioning baffles will be welded and fixed at each connection node. The steel column and the truss upper chord are connected by conventional bolt welding nodes. Welded joints are used to connect with the truss upper chord and web, and high-strength bolts are used to connect the steel beam and truss corbels.

The further improvement of the technical solution of the present invention is that: said step 3 also includes:

A1: Assembly of roof reticulated shell and installation of lifting bracket

A2: Installation of roof reticulated shell embedded rods;

A3: Construction of concrete;

A4: Completion acceptance.

The further improvement of the technical solution of the present invention lies in: the roof components are processed and manufactured in sections, the roof is installed on the spot and adopts a construction scheme of overall lifting after ground assembly, the roof adopts a single-layer two-way mesh steel arch shell structure, and the two-way arch shell structure The curve is smooth, the primary and secondary beams of the roof are box-shaped members with gradual bending and torsion, and the cross-section is trapezoidal. Then, according to the requirements of the overall lifting project, combined with the characteristics of the hydraulic synchronous overall lifting technology, in order to ensure that the steel structure can be successfully lifted according to the design requirements.

The further improvement of the technical solution of the present invention lies in: according to the roof load transmission route, the original supporting structure is used as the lifting point as much as possible, the supporting structure includes a proximal lifting bracket and a distal lifting bracket, and the lifting bracket includes a column The roof bracket, the top of the column top bracket is provided with a beam, the top of one end of the beam is provided with a hydraulic oil pump, the bottom of the hydraulic oil pump is provided with a lifting point, the bottom of the lifting point is provided with a roof, and the column The bottom of the top bracket is provided with a steel column, the side of the steel column is fixedly installed with a reinforcement support, and the top of the other end of the reinforcement support is provided with a steel beam, and one end of the steel beam is provided on the top of one side of the steel column, so The distal lifting bracket includes a column, one side of the bottom of the column is fixedly connected with a lateral support, the top of the column is fixedly installed with a lifting beam, the bottom of the lifting beam is arranged on the top of the lateral support, and the lifting The top of one end of the beam is provided with a hydraulic hoist, the bottom of the hydraulic hoist extends to the bottom of the lifting beam to provide a hanging point, the side of the other end of the lifting beam is fixedly connected with a rear tie rod, and the bottom of the rear tie rod The backing plate is fixedly installed, the bottom of the backing plate is provided with a beam plate frame, and one end of the bottom of the lifting beam is provided with a diagonal brace, and the lifting points arranged should satisfy that the roof deformation and stress are within the controllable range of the relevant specifications. According to the characteristics of the roof structure, the lifting point is set on the floor structure at the same height, the floor steel column and steel beam are the main force-transmitting components of the roof structure, and the lifting bracket is set at the top of the steel column, which is evenly arranged according to the overall roof structure. , a total of sixteen promotion points are set.

The further improvement of the technical solution of the present invention is: the hydraulic lifting equipment is installed on the lifting frame, and after the installation is in place and passed the inspection, the synchronous overall lifting of the roof is started, and the computer is used to control the hydraulic synchronous lifting. The flexible steel strands are load-bearing, Lifting oil cylinder cluster, computer control, and hydraulic synchronous lifting principle. After the roof is lifted in place, install the steel beams and embedded sections connecting with the main structure. After all components are installed, lift and unload the roof and remove the lifting bracket. .

Owing to adopting above-mentioned technical scheme, relative to the prior art, the technical progress of the present invention is:

The invention provides a method for hoisting a two-way bending and torsion dome support. The truss is segmented by considering factors such as truss weight, distribution position, tower crane performance, and transportation conditions. At the same time, in order to prevent the deformation of components during transportation, the principle of component segmentation must be met. At the same time, in order to prevent deformation of components during transportation, the on-site welding should ensure the welding operation space, which is convenient for production and installation, and try to avoid crossing and overlapping of welding seams and reduce welding stress. Centralized and on-site welding volume.

The invention provides a method for hoisting two-way bending and torsion dome brackets. Sixteen lifting points are arranged evenly according to the roof as a whole, which facilitates on-site installation and ensures safe hoisting. When the truss sections are manufactured in the factory, they should The upper surface of the segment or the upper flange is provided with hoisting holes or welding lugs. The distance from the hoisting point to the end of the segment is generally 1/4 of the total length of the component. Since corbels are set on the chord segment, the position of the hoisting point should be based on The position of the center of gravity should be properly adjusted so that the object has sufficient stability during the lifting process to avoid accidents.

The invention provides a hoisting method for a two-way bending and torsion dome support, which adopts the computer-controlled hydraulic synchronous lifting technology, adopts the new principle of flexible steel strand load-bearing, lifting oil cylinder cluster, computer control, and hydraulic synchronous lifting, and the lifting system has a millimeter-level fine-tuning function , can realize vertical precise positioning in the air, high degree of automation, convenient and flexible operation, good safety, high reliability, wide adaptability, strong versatility, small equipment, light weight, large carrying capacity, especially suitable for small spaces Or carry out large-tonnage component lifting indoors.

The invention provides a method for hoisting a two-way bending and torsion dome bracket. The bottom of the hoisting point is set on the top of the roof, and the wheel eye hydraulic oil pump performs hydraulic movement to achieve the function of hydraulic hoisting, and the supporting steel beams and steel columns are connected with reinforced supports. To achieve the function of reinforcing the support, the bracket is lifted from the far end, and the four corners of the roof are hoisted with the lifting point to facilitate the stable stretching of the roof, and the support connection between the diagonal brace and the lateral support is used to improve the fixing of the lifting bracket The reinforcement of the rear tie rod and the back plate increases the safety performance of the device, facilitates the convenient processing of the device, is conducive to increasing the stability of the device, and increases the safety performance of the staff.

Description of drawings

Fig. 1 is a flowchart of the present invention;

Fig. 2 is the subsection transportation hoisting flowchart of the present invention;

Fig. 3 is the installation flowchart of roof structure of the present invention;

Fig. 4 is the structural representation of beam plate frame of the present invention;

Fig. 5 is a schematic structural view of the proximal lifting bracket of the present invention;

6 is a schematic structural view of the distal lifting bracket of the present invention;

Fig. 7 is a schematic diagram of the state when the roof of the present invention is lifted;

Fig. 8 is a schematic diagram of the overall assembled structure of the roof of the present invention;

Figure 9 is a front view of the overall outline of the roof of the present invention;

Fig. 10 is a schematic diagram of an oblique 45° angle of the overall outline of the roof of the present invention.

In the figure: 1. beam frame; 2. near-end lifting bracket; 21. beam; 22. hydraulic oil pump; 23. steel beam; 24. steel column; 25. reinforcement support; 26. column top bracket; 27. hanging point ;3, far-end lifting bracket; 30, column; 31, lifting beam; 32, hydraulic hoist; 33, hanging point; 34, diagonal brace; 35, lateral support; 36, rear tie rod; 4. Roof; 41. Edge beam; 42. Corner main beam; 43. Center main beam; 44. Assembled side beam; 45. Lifting point.

Implementation

Below in conjunction with embodiment the present invention is described in further detail:

Example

As shown in Figures 1-6, the present invention provides a method for hoisting a two-way twisted dome bracket. The method for hoisting a two-way twisted dome bracket includes the following steps:

Step 1: Construction of basement pit;

Step 2: Steel frame truss construction;

Step 3: Installation of the roof structure;

Step 1 also includes: S1: According to the building construction, carry out the construction of the concrete structure of the basement, and use the tower crane to install the underground steel column embedded parts and steel column sections, and then carry out the construction of the basement concrete, S2: According to the bottom-up The construction plan includes the installation of stiff steel beams on the first floor and the construction of concrete on the first floor, and the installation of steel columns above the ground in the main building. S3: use truss components to process and manufacture them in sections to reduce the length of transported parts and facilitate the convenience of steel structural parts. Transportation and truss construction on site adopt temporary support to assist in-situ assembly at high places, steel column hoisting, installation with anchor bolts, base plate pouring, after the base plate concrete curing reaches strength, the first section of stiff steel column hoisting, steel column positioning and adjustment , After the steel column is installed in place, the anchor bolts are poured twice.

In this example, the construction of the basement concrete structure is carried out through building construction, and the installation of the underground steel column embedded parts and steel column segments is carried out by using the tower crane, and then the construction of the basement concrete is carried out. The bottom-up construction plan is carried out. The installation of the stiff steel beams on the first floor and the construction of the concrete on the first floor, the installation of the steel columns above the ground in the main building, are processed and manufactured in sections using truss members to facilitate the transportation of steel structural parts, and the construction of the trusses on site adopts temporary supports to assist in-situ height Assembled at the first floor slab, install supporting embedded parts before pouring the first floor slab, and install temporary support after the construction of the first floor slab is completed and the curing reaches strength.

Example

As shown in Figures 1-6, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, Step 2 also includes: (1) After the main steel structures on both sides of the truss are installed, a stable frame system is formed At the same time, after the temporary support of the truss is installed in place and passed the inspection, use the on-site tower crane to start hoisting the truss members. (2) Bury the temporary support embedded parts before pouring concrete on the F1 floor. (3) The truss is in the order from bottom to top Hoist the lower chord, column, upper chord, and diagonal bracing in sequence, and after the chord is installed in place, install the connecting steel beams between the trusses to ensure the overall stability of the truss during installation. (4) The components are positioned using high The precision total station is used for measurement and positioning. (5) Hoisting is carried out sequentially from west to east. After the truss chords are installed, the floor steel beams between the adjacent structures are installed immediately to ensure the lateral stability of the truss installation. ( 6) The welding of the truss structure is completed, the unloading is completed and the temporary support is removed, and the concrete on the upper floor of the truss can be poured; before hoisting, the palm ropes are tied at both ends of the truss rods as slip ropes, which is conducive to maintaining the balance of the rods in the air. To improve the installation efficiency, after the hoisting steel wire rope is tied, try hoisting twice on the ground, about 5cm above the ground, to observe whether it is level and skewed, and the formal hoisting can only be done after the hoisting is balanced. Before hoisting, the dirt on the surface of the rod should be cleaned ; Derust the connecting plate and friction surface that produces floating rust before hoisting, and weld the welding positioning plate to the end of the rod. Before hoisting the rod, pay attention to the positive and negative directions and horizontal direction of the rod, and clearly mark it to ensure The installation is correct. When hoisting, the preliminary positioning of the components is completed under the observation of the total station through adjustment measures such as tire frames, chains, steel supports, and jacks, and the components are fixed with temporary connecting plates, and then the next component is carried out. The hoisting and axis control of truss rods: mark the center line of each rod before hoisting. When the rods are in place, ensure that the center line is aligned with the axis on the steel column corbel, and use a self-made simple beam calibration device for leveling and correction. The parts can be corrected by means of jacks, chain hoists, etc. Once the calibration is in place, the positioning baffles will be welded and fixed at each connection node. The steel column and the truss upper chord are connected by conventional bolt welding nodes, and the steel column is connected with the truss upper chord and web. Welded joints are used, and high-strength bolts are used to connect steel beams and truss corbels.

In this embodiment, after the installation of the main steel structures on both sides of the truss is completed, a stable frame system is formed. At the same time, after the temporary support of the truss is installed in place and passed the inspection, the on-site tower crane is used to start the hoisting of the truss rods. The truss installation scheme adopts in-situ Assembled at high altitude, the central and southern trusses are divided into two to three sections, and the columns and diagonal stays are hoisted in natural sections. A large-span truss, the truss is connected to the corbels of the steel columns on both sides, and the trusses are connected by floor steel beams, the A~B axes of the southern podium hall intersect with the 4~7 axes, and 2 large-span vierendeel trusses are set on the F2~F3 floors , the trusses are docked with the steel column corbels on both sides, and the trusses are connected by steel beams. The RA~RC axes on the southwest side of the podium intersect the R1~R3 axes, and a large-span cantilevered arc-shaped composite truss is set on the F2~F3 floors. The trusses and The corbels of the steel columns on both sides are butted, and the trusses are hoisted in sequence from bottom to top, including the lower chord, upright column, upper chord, and diagonal bracing. Overall stability during truss installation.

Example

As shown in Figures 1-6, on the basis of Example 1, the present invention provides a technical solution: preferably, Step 3 also includes: A1: assembling the roof reticulated shell and installing the lifting bracket; A2: roof Installation of reticulated shell embedded rods; A3: Concrete construction; A4: Completion acceptance; the roof adopts a single-layer two-way grid steel arch shell structure, the two-way arch shell structure has smooth curves, and the primary and secondary beams of the roof are box-shaped with gradual bending and torsion The section form of the component is trapezoidal, and according to the requirements of the overall lifting project, combined with the characteristics of the hydraulic synchronous overall lifting technology, in order to ensure that the steel structure can be successfully lifted according to the design requirements, according to the roof load transmission route, the original support structure should be used as much as possible for lifting. The lifting point, the supporting structure includes a near-end lifting bracket 2 and a far-end lifting bracket 3, the lifting bracket 2 includes a column top bracket 26, the top of the column top bracket 26 is provided with a beam 21, and the top of one end of the beam 21 is provided with a hydraulic oil pump 22. The bottom of the oil pump 22 is provided with a hoisting point 27, the bottom of the hoisting point 27 is provided with a roof 4, the bottom of the column top bracket 26 is provided with a steel column 24, the side of the steel column 24 is fixedly installed with a reinforcement support 25, and the other end of the reinforcement support 25 The top of the steel beam 23 is provided with a steel beam 23, and one end of the steel beam 23 is arranged on the top of the steel column 24 side. Lifting beam 31 is fixedly installed, and the bottom of lifting beam 31 is arranged on the top of lateral support 35, and the top of lifting beam 31 one end is provided with hydraulic lifter 32, and the bottom of hydraulic lifter 32 and extends to the bottom of lifting beam 31 is provided with The hanging point 33, the side of the other end of the lifting beam 31 is fixedly connected with a rear tie rod 36, the bottom of the rear tie rod 36 is fixedly equipped with a backing plate 37, the bottom of the backing plate 37 is provided with a beam plate frame 1, and one end of the lifting beam 31 bottom is provided with There are diagonal braces 34, and the lifting points arranged should meet the requirement that the roof deformation and stress are within the controllable range of relevant specifications. According to the characteristics of the roof structure, the lifting points are set on the floor structure at the same height, and the steel columns and steel beams of the floors are the roof structure. The main force transmission component of the structure, the lifting bracket is set at the top of the steel column, and is evenly arranged according to the roof as a whole. A total of sixteen lifting points are set. , hoisting cylinder clusters, computer control, hydraulic synchronous lifting new principles, combined with modern construction technology, after assembling tens of thousands of tons of components on the ground, they are lifted to the predetermined position and installed in place, realizing large-tonnage, large-span, and large-area construction. Super-large components are hoisted synchronously at ultra-high altitudes. The computer-controlled hydraulic synchronous hoisting system consists of steel strands and hoisting cylinder clusters, hydraulic pump stations, sensor detection, computer control, and remote monitoring systems.

In this embodiment, the roof components are processed and manufactured in sections, and the roof is installed on-site using a construction scheme of overall lifting after ground assembly. Considering factors such as the weight of the roof components, the distribution position, the performance of the tower crane, and transportation conditions, the roof components are carried out. Segmentation, the roof installation scheme adopts the overall assembly of the ground and then uses a synchronous hydraulic hoist to lift it into place, and then according to the characteristics of the roof structure, the lifting points are set on the floor structure of the same height, and are evenly arranged according to the overall roof, and a total of 16 are set. For the lifting point, the roof adopts a single-layer two-way grid steel arch shell structure, and the two-way arch shell structure has a smooth curve. The cantilever distance is divided into two types: the proximal end of the middle part and the far end of the corner part. The original support structure is used as the lifting point, and the lifting point 27 is set on the top of the roof, and the hydraulic oil pump 22 is used for hydraulic movement to drive the lifting point 27 up. , and cooperate with the reinforced support 25 to connect the supporting steel beam 23 and the steel column 24, then lift the bracket 3 from the far end, cooperate with the hanging point 33 to lift the four corners of the roof, so as to facilitate the stable stretching of the roof, and cooperate with the diagonal brace 34 Connect with the support of the lateral support 35 to improve the fixity of the lifting bracket, and use the reinforcement of the rear tie rod 36 and the back plate 37 to increase the safety performance of the device and facilitate the convenient processing of the device. The lifting points should meet the deformation of the roof And the stress is within the controllable range of the relevant specifications, and then the hydraulic synchronous lifting is controlled by the computer. The computer-controlled hydraulic synchronous lifting system consists of steel strands and lifting cylinder clusters, hydraulic pump stations, sensor detection, computer control and remote monitoring systems, etc. Consists of several parts for lifting installation.

The above has generally described the present invention in detail, but some modifications or improvements can be made on the basis of the present invention, which are obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims (10)

1. A hoisting method of a bidirectional bending dome bracket is characterized by comprising the following steps of: the hoisting method of the bidirectional bending dome bracket comprises the following steps:

step one: constructing a basement foundation pit;

step two: constructing a steel truss frame;

step three: installing a roof structure;

the second step further comprises:

(1) After the main steel structures on two sides of the truss are installed, a stable frame system is formed, and the truss is temporarily supported and installed in place and is inspected to be qualified, and then the truss rod is hoisted by using a field tower crane;

(2) Burying a temporary support embedded part before pouring concrete on the F1 layer building surface;

(3) The lower chord member, the upright posts, the upper chord member and the diagonal braces are sequentially hoisted according to the sequence from bottom to top, and after the chord members are integrally installed in place, the girder connecting beams among the trusses are installed, so that the integral stability of the trusses in the installation process is ensured;

(4) The component positioning adopts a high-precision total station to perform measurement positioning;

(5) Hoisting is sequentially carried out from the west to the east, floor steel beams between adjacent structures are installed immediately after the truss chord members are installed, and lateral stability of the truss during installation is ensured;

(6) And (3) after all truss structures are welded, unloading is finished, and concrete pouring is performed on floors on the upper part of the truss after the temporary support is removed.

2. The method for hoisting the bidirectional bending dome bracket according to claim 1, wherein the method comprises the following steps: the first step further comprises:

s1: according to the building construction, the construction of the basement concrete structure is carried out, the tower crane is utilized to install the embedded parts of the underground steel columns and the steel column sections, and then the construction of the basement concrete is carried out;

s2: according to a bottom-up construction scheme, the installation of a first-layer stiff steel beam and the construction of first-layer concrete are carried out, and the installation of the ground steel column sections of a main building is carried out;

s3: the truss members are manufactured in a segmented mode, the length of the conveying member is reduced, steel structural members are convenient to convey, and temporary support is adopted for supporting and assisting in assembling at the high position in site construction of the truss.

3. The method for hoisting the bidirectional bending dome bracket according to claim 2, wherein the method comprises the following steps: the steel column hoisting is installed by using foundation bolts, the bottom plate is poured, after the bottom plate concrete maintenance reaches the strength, the first section of stiff steel column hoisting is started, the steel column is positioned and adjusted, and after the steel column is installed in place, the foundation bolts are poured for the second time.

4. The method for hoisting the bidirectional bending dome bracket according to claim 1, wherein the method comprises the following steps: before hoisting, palm ropes are tied at two ends of the truss rod pieces to serve as sliding ropes, after hoisting steel wire ropes are bound, hoisting is tested twice on the ground, about 5cm away from the ground, whether the truss rod pieces are horizontal or not is observed, whether the truss rod pieces are inclined or not is judged, and formal hoisting is carried out after test hoisting is balanced.

5. The method for hoisting the bidirectional bending dome bracket according to claim 1, wherein before hoisting, dirt on the surface of the rod piece is cleaned; the connecting plate and the friction surface which generate the floating rust are derusted before being lifted, the welding positioning plate is welded at the end part of the rod piece, the front and back directions and the horizontal directions of the rod piece are required to be noted before the rod piece is lifted, and the accurate installation is ensured.

6. The method for hoisting the bidirectional bending dome bracket according to claim 1, wherein the method comprises the following steps: during hoisting, the components are initially positioned under the observation of the total station by adjusting measures such as a jig frame, a chain block, a rigid support and a jack, the components are fixed by a temporary connecting plate, then the next component is hoisted, and the axis of the truss rod is controlled: each rod piece marks a central line before hoisting, the central line is ensured to be aligned with the axis on the Ji Gangzhu bracket when the rod piece is in place, the self-made simple beam corrector is used for leveling correction, the rod piece correction can be realized by means of a jack, a chain block and the like, once correction is in place, the positioning baffle plates are welded and fixed at each connecting node, the steel column is connected with the truss upper chord member by adopting a conventional bolt welding node, the steel column is connected with the truss upper chord member and the web member by adopting a welding node, and the steel beam is connected with the truss bracket by adopting a high-strength bolt.

7. The method for hoisting the bidirectional bending dome bracket according to claim 1, wherein the method comprises the following steps: the third step further comprises:

a1: assembling a roof reticulated shell and installing a lifting bracket;

a2: installing a roof net shell embedded rod piece;

a3: constructing concrete;

a4: and (5) completion acceptance.

8. The method for hoisting the bidirectional bending dome bracket according to claim 7, wherein the method comprises the following steps: the roof component is manufactured in a sectional manner, the construction scheme of integrally lifting the roof after ground assembly is adopted in field installation of the roof, the roof adopts a single-layer bidirectional grid steel arch shell structure, the curve of the bidirectional arch shell structure is smooth, the main beam and the secondary beam of the roof are gradually-changed bent box-shaped components, the section form is a trapezoid section, and then the steel structure is lifted according to the design requirement by adopting a hydraulic synchronous integral lifting technology according to the integral lifting engineering requirement;

the hydraulic lifting equipment is arranged on the lifting frame, after the hydraulic lifting equipment is arranged in place and is inspected to be qualified, synchronous integral lifting of the roof is started, the principle of computer control hydraulic synchronous lifting, flexible steel strand bearing, lifting oil cylinder clusters, computer control and hydraulic synchronous lifting is utilized, after the roof is lifted in place, the steel beam and the block are connected between the installation and the main structure, lifting and unloading of the roof are carried out after all components are installed, and the lifting support is removed.

9. The method for hoisting the bidirectional bending dome bracket according to claim 7, wherein the method comprises the following steps: according to the roof load transmission route, the original supporting structure is adopted as a lifting hanging point, the supporting structure comprises a proximal lifting support (2) and a distal lifting support (3), the lifting support (2) comprises a column top support (26), the top of the column top support (26) is provided with a cross beam (21), the top of one end of the cross beam (21) is provided with a hydraulic oil pump (22), the bottom of the hydraulic oil pump (22) is provided with an upper hanging point (27), the bottom of the upper hanging point (27) is connected with a roof (4), the bottom of the column top support (26) is provided with a steel column (24), the side surface of the steel column (24) is fixedly provided with a reinforcing support (25), the top of the other end of the reinforcing support (25) is provided with a steel beam (23), one end of the steel beam (23) is arranged at the top of one side of the steel column (24), the distal lifting support (3) comprises a stand column (30), one side of the bottom of the stand column (30) is fixedly connected with a lateral support (35), the top of the stand column (30) is fixedly provided with a lifting beam (31), the bottom of the stand column (30) is provided with a lifting beam (31), the top of the top (31) is provided with a hydraulic lifting machine (31), the bottom of hydraulic elevator (32) and extend to the bottom of hoist beam (31) and be provided with down hoisting point (33), the side fixedly connected with back pull rod (36) of hoist beam (31) other end, the bottom fixed mounting of back pull rod (36) has back stiffening plate (37), the bottom of back stiffening plate (37) is provided with Liang Banjia (1), the one end of hoist beam (31) bottom is provided with bracing (34), and the hoisting point of laying should satisfy roof deformation and stress and be in relevant standard controllable scope, according to roof structural feature, the hoisting point sets up on the floor structure of same height, and floor steel column and girder steel are the main power transmission component of roof structure, and the hoisting support sets up in steel column post roof position, evenly arranges according to the roof is whole, totally sets up sixteen hoisting points.

10. The method for hoisting the bidirectional bending dome bracket according to claim 9, wherein the method comprises the following steps: the roof (4) is formed by encircling four groups of edge sealing beams (41), a plurality of groups of corner girders (42) are fixedly connected between two adjacent groups of edge sealing beams (41), a plurality of groups of spliced center girders (43) are connected between the corner girders (42), spliced side girders (44) are welded at the tops of the corner girders (42) and the center girders (43), a group of arc-shaped dome structures are integrally formed by the edge sealing beams (41), the corner girders (42), the center girders (43) and the spliced side girders (44), and lifting points (45) fixedly connected with the lower lifting points (33) are welded at the tops of the edge sealing beams (41).

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