Spiral steel ladder and steel column seamless intersecting welding construction method based on BIM simulation

Abstract

The invention discloses a spiral steel ladder and steel column seamless intersecting welding construction method based on BIM simulation, and relates to the field of spiral steel ladder and steel column welding construction.The method comprises the following steps that (1) construction preparation is conducted, and a steel column simulation model is established; (2) checking a connecting steel beam; (3) BIM simulation of the spiral steel ladder; (4) component production and trailer transportation; (5) hoisting the spiral steel ladder; and (6) checking and accepting the spiral steel ladder. The method not only can ensure the construction quality of the joint, but also has the advantages of saving materials and labor, avoiding later repair and rework and the like, and is suitable for intersecting welding construction of the steel structure special-shaped component.

Description

Technical Field

[0001] The present invention relates to the field of spiral steel ladder and steel column welding construction, and in particular to a seamless intersecting welding construction method of a spiral steel ladder and a steel column based on BIM simulation. Background Art

[0002] With the development of industrial buildings, the application of steel structure buildings is becoming more and more common. Compared with traditional concrete buildings, steel structure buildings have higher strength and better earthquake resistance. Its main building material: steel can be recycled and reused, which can greatly reduce construction waste and conform to the development concept of green construction and prefabricated buildings. With the development of the economy, in order to meet the needs of various aspects such as the use function, structural safety performance, and appearance of buildings, the form of steel structures has also developed in a diversified way. Some special-shaped cross-sections and complex steel components are gradually used in some large-scale projects. During the construction process, the intersection lines of special-shaped components are extremely complex. If the components are slightly misaligned, they can only be cut on site, which wastes materials and must be repaired later. The repair work not only wastes a lot of manpower and materials, but also the appearance after the repair is usually flawed. The quality of the welds is difficult to control, and it is easy to retain quality risks. In view of this, it is urgent to propose a new welding construction method. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a construction method for seamlessly intersecting and welding spiral steel ladders and steel columns based on BIM simulation in response to the shortcomings of the above-mentioned existing technologies. This method can not only ensure the construction quality at the nodes, but also has the advantages of saving materials and labor, avoiding later repairs and rework, and has broad application prospects.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a construction method for seamlessly intersecting and welding a spiral steel ladder and a steel column based on BIM simulation, comprising the following steps: (1) Construction preparation, establishment of steel column simulation model; (2) Check the connecting steel beams; (3) BIM simulation of spiral steel ladder; (4) Component production and trailer transportation; (5) Spiral steel ladder hoisting; (6) Acceptance of spiral steel ladder.

[0005] Furthermore, in step (1), the key points for establishing the steel column simulation model are: Use a total station to comprehensively measure the positioning deviation, size deviation, and inclination deviation of the installed steel columns to determine the actual installation status of each steel column at the construction site; According to the design drawings and measurement data, a 1:1 simulation model of each steel column was established in Tekla according to the actual coordinates to accurately simulate the actual situation on the construction site.

[0006] Furthermore, in step (2), the key points for checking the connection of steel beams are: The previous spiral ladder and the spiral ladder to be installed are welded together into a whole through connecting steel beams welded to the steel columns. Therefore, the connecting steel beams need to be precisely checked. The size and position of the connecting steel beams are restored in Tekla based on the measured data to ensure that the interface of the spiral ladder to be installed and the connecting steel beams can be welded seamlessly or with only slight seams. A total station was used to measure the spatial position of the previous spiral steel ladder, and the installation status of the previous spiral steel ladder was restored in Tekla based on the measured results.

[0007] Furthermore, in step (3), the key points of the spiral steel ladder BIM simulation are: Based on the Tekla simulation model established based on the actual situation of the construction site, a BIM model of the spiral steel ladder was established according to the spiral steel ladder construction drawings; The middle part of each spiral steel ladder is connected to the steel column, and the end part is connected to the connecting steel beam; according to the collision situation of the components, the model design is optimized, and a 1mm gap is reserved between the spiral steel ladder model and the steel column and connecting steel beam to ensure that the spiral steel ladder can achieve seamless or micro-seam installation effect after production.

[0008] Furthermore, in step (4), the key points of component production are: The steel structure processing plant produces spiral steel ladders and supporting parts based on the Tekla simulation model and the actual situation of the construction site.

[0009] Furthermore, in step (5), the key points of the spiral steel ladder hoisting operation are: Before using a truck crane for lifting, the machine must be tested in advance to ensure that the machine is in good performance; After the spiral steel ladder is delivered to the site, the installation personnel and the truck crane shall be immediately organized to carry out the hoisting operation; the general contractor, the supervision company and other relevant departments shall be notified in advance of the hoisting operation; During hoisting, a safety cordon should be set up to prevent other construction workers from entering the hoisting site, and special personnel should be arranged at the main entrances and exits for supervision; Welding personnel must be equipped with safety helmets, safety belts, and safety ropes, and take a boom truck to the top of the upper steel ladder and position themselves. After the spiral ladder is hoisted to the designated position, they must straighten it and then weld.

[0010] Furthermore, in step (6), the key points for the acceptance of the spiral steel ladder are: The main body of the spiral steel ladder is all first-class welded seams; the spiral steel ladder weld acceptance shall not have defects such as incomplete welding, root shrinkage, undercut and poor joints, and shall not have defects such as surface pores, slag inclusion cracks and arc scratches.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The method of the present invention can reduce the construction difficulty of the hoisting operation and avoid the situation where the special-shaped steel structure components cannot be installed normally; (2) By adopting the method of the present invention, prefabricated steel structure components do not need to be cut on site, thus saving materials and labor; (3) By adopting the method of the present invention, the installation gaps at the intersections of special-shaped steel structure components are seamless or micro-seams, eliminating the need for later repair and rework, thereby reducing construction costs; (4) The method of the present invention can ensure the construction quality at the nodes of special-shaped components of steel structures, which is conducive to improving the overall level of on-site construction quality; the present invention is suitable for the intersecting welding construction of special-shaped components of steel structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a simulation model of a steel column in an embodiment of the present invention; Figure 2 To improve the connecting steel beam model in the embodiment of the present invention; Figure 3 This is a schematic diagram of the intersecting connection in the middle of the spiral steel ladder model in an embodiment of the present invention. DETAILED DESCRIPTION

[0013] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings and embodiments. Obviously, the embodiments described are only some embodiments, not all embodiments. Based on this embodiment, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] This embodiment provides a construction method for seamlessly intersecting and welding a spiral steel ladder and a steel column based on BIM simulation, comprising the following steps: (1) Construction preparation, establishment of steel column simulation model; (2) Check the connecting steel beams; (3) BIM simulation of spiral steel ladder; (4) Component production and trailer transportation; (5) Spiral steel ladder hoisting; (6) Acceptance of spiral steel ladder.

[0015] Specifically, in step (1), the key points for establishing the steel column simulation model are: Use a total station to comprehensively measure the positioning deviation, size deviation, and inclination deviation of the installed steel columns to determine the actual installation status of each steel column at the construction site; According to the design drawings and measurement data, a 1:1 (model size is 1:1 ratio) simulation model of each steel column is established in Tekla according to the actual coordinates to accurately simulate the actual situation on the construction site, such as Figure 1 shown.

[0016] Specifically, in step (2), the key points for checking the connection of steel beams are: The previous spiral ladder and the spiral ladder to be installed are welded together into a whole through connecting steel beams welded to the steel columns. Therefore, the connecting steel beams need to be precisely checked. The size and position of the connecting steel beams are restored in Tekla based on the measured data to ensure that the interface of the spiral ladder to be installed and the connecting steel beams can be welded seamlessly or with only slight seams. Use a total station to measure the spatial position of the previous spiral steel ladder, and restore the installation status of the previous spiral steel ladder in Tekla based on the measured results, such as Figure 2 shown.

[0017] Specifically, in step (3), the key points of the spiral steel ladder BIM simulation are: Based on the Tekla simulation model established based on the actual situation of the construction site, a BIM model of the spiral steel ladder was established according to the spiral steel ladder construction drawings; The middle of each spiral steel ladder is connected to the steel column. Figure 3 As shown, the ends are connected with the connecting steel beams; according to the collision situation of the components, the model design is optimized, and a 1mm gap is reserved between the spiral steel ladder model and the steel columns and connecting steel beams to ensure that the spiral steel ladder can achieve seamless or micro-seam installation effect after production.

[0018] Specifically, in step (4), the key points of component production are: The steel structure processing plant produces spiral steel ladders and supporting parts based on the Tekla simulation model and the actual situation of the construction site; For the emergency command and display center of the Sany Xiangqiong (Hainan) Intelligent Manufacturing Industrial Park project, there are ten spiral steel ladders that spiral upward. The spiral steel ladders have a double helix structure, with two ladders in each run. One set of ladders is produced at a time and transported to the site for installation.

[0019] Specifically, in step (5), the key points for hoisting the spiral steel ladder are: Before using a truck crane for lifting, the machine must be tested in advance to ensure that the machine is in good performance; After the spiral steel ladder is delivered to the site, the installation personnel and the truck crane shall be immediately organized to carry out the hoisting operation; the general contractor, the supervision company and other relevant departments shall be notified in advance of the hoisting operation; During hoisting, a safety cordon should be set up to prevent other construction workers from entering the hoisting site, and special personnel should be arranged at the main entrances and exits for supervision; Welding personnel must be equipped with safety helmets, safety belts, and safety ropes, and take a boom truck to the top of the upper steel ladder and position themselves. After the spiral ladder is hoisted to the designated position, they must straighten it and then weld.

[0020] Specifically, in step (6), the key points for the acceptance of spiral steel ladders are: The Emergency Command and Exhibition Center has a high independent height, unique shape, and great potential safety hazards in construction quality. The main body of the steel structure spiral steel ladder is all first-class welded; The welds of spiral steel ladders shall not have defects such as incomplete welding, root shrinkage, undercut and poor joints; nor shall they have defects such as surface pores, slag inclusion cracks and arc scratches.

[0021] Benefit Analysis 1. Economic benefits Taking the emergency command and exhibition center of the Hunan-Qiong Advanced Manufacturing Industry Park as an example, if the original construction method is used, each spiral steel ladder needs to be cut on the ground before hoisting, which increases the average labor and machinery costs by 3,000 yuan. After the hoisting is completed, it needs to be repaired, and the average repair material consumption is 2,200 yuan, and the repair costs 6,500 yuan for labor and machinery. If this method is used, each spiral ladder can be saved by 11,700 yuan, with a total cost saving of 117,000 yuan.

[0022] According to the above analysis, the present invention achieves the effect of seamless welding between spiral steel ladders and steel columns by adopting BIM simulation. The prefabricated steel structure components do not need to be cut on site, and no later repair and rework are required. It saves at least 117,000 yuan in project costs, has good promotion value, and has obvious economic benefits.

[0023] 2. Social benefits The present invention is suitable for the construction using intersecting welding of special-shaped steel structure components, which reduces the construction difficulty of hoisting operations and avoids the situation where special-shaped steel structure components cannot be installed normally. Prefabricated steel structure components do not need to be cut on site, and no later repair and rework is required, which reduces construction costs and ensures the construction quality at the nodes of special-shaped steel structure components. It is beneficial to the improvement of the overall level of on-site construction quality and provides a feasible construction method of seamless intersecting welding of spiral steel ladders and steel columns based on BIM simulation for similar projects, which has good promotion value and social benefits.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A seamless intersecting welding construction method for spiral steel ladders and steel columns based on BIM simulation is characterized by: The following steps are involved: (1) Construction preparation, establishment of steel column simulation model; (2) Check the connecting steel beams; (3) BIM simulation of spiral steel ladder; (4) Component production and trailer transportation; (5) Spiral steel ladder hoisting; (6) Acceptance of spiral steel ladder.

2. The method for seamlessly intersecting and welding a spiral steel ladder and a steel column based on BIM simulation according to claim 1 is characterized in that: In step (1), the key points for establishing the steel column simulation model are: Use a total station to comprehensively measure the positioning deviation, size deviation, and inclination deviation of the installed steel columns to determine the actual installation status of each steel column at the construction site; According to the design drawings and measurement data, a 1:1 simulation model of each steel column was established in Tekla according to the actual coordinates to accurately simulate the actual situation on the construction site.

3. The method for seamlessly intersecting and welding a spiral steel ladder and a steel column based on BIM simulation according to claim 2 is characterized in that: In step (2), the key points for checking the connection of steel beams are: The previous spiral ladder and the spiral ladder to be installed are welded together into a whole through connecting steel beams welded to the steel columns. Therefore, the connecting steel beams need to be precisely checked. The size and position of the connecting steel beams are restored in Tekla based on the measured data to ensure that the interface of the spiral ladder to be installed and the connecting steel beams can be welded seamlessly or with only slight seams. A total station was used to measure the spatial position of the previous spiral steel ladder, and the installation status of the previous spiral steel ladder was restored in Tekla based on the measured results.

4. The method for seamlessly intersecting and welding a spiral steel ladder and a steel column based on BIM simulation according to claim 3 is characterized in that: In step (3), the key points of BIM simulation of spiral steel ladder are: Based on the Tekla simulation model established based on the actual situation of the construction site, a BIM model of the spiral steel ladder was established according to the spiral steel ladder construction drawings; The middle part of each spiral steel ladder is connected to the steel column, and the end part is connected to the connecting steel beam; according to the collision situation of the components, the model design is optimized, and a 1mm gap is reserved between the spiral steel ladder model and the steel column and connecting steel beam to ensure that the spiral steel ladder can achieve seamless or micro-seam installation effect after production.

5. The method for seamlessly intersecting and welding a spiral steel ladder and a steel column based on BIM simulation according to claim 4 is characterized in that: In step (4), the key points of component production are: The steel structure processing plant produces spiral steel ladders and supporting parts based on the Tekla simulation model and the actual situation of the construction site.

6. The method for seamlessly intersecting and welding a spiral steel ladder and a steel column based on BIM simulation according to claim 5 is characterized in that: In step (5), the key points for the installation of the spiral steel ladder are: Before using a truck crane for lifting, the machine must be tested in advance to ensure that the machine is in good performance; After the spiral steel ladder is delivered to the site, the installation personnel and the truck crane shall be immediately organized to carry out the hoisting operation; the general contractor and the relevant departments of the supervision company shall be notified in advance of the hoisting operation; During hoisting, a safety cordon should be set up to prevent other construction workers from entering the hoisting site, and special personnel should be arranged at the main entrances and exits for supervision; Welding personnel must be equipped with safety helmets, safety belts, and safety ropes, and take a boom truck to the top of the upper steel ladder and position themselves. After the spiral ladder is hoisted to the designated position, they must straighten it and then weld.

7. The method for seamlessly intersecting and welding a spiral steel ladder and a steel column based on BIM simulation according to claim 6 is characterized in that: In step (6), the key points for the acceptance of spiral steel ladders are: The main body of the spiral steel ladder is all first-class welded seams; the spiral steel ladder weld acceptance shall not have defects such as incomplete welding, root shrinkage, undercut and poor joints, and shall not have surface pores, slag inclusion cracks and arc scratches.

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