Construction method of steel structure interlayer

Abstract

The invention relates to the technical field of building construction, in particular to a construction method of a steel structure interlayer, which comprises the following steps of: carrying out regional division on the steel structure interlayer to be constructed to form a plurality of interlayer subareas; sequentially splicing a plurality of interlayer partitions on a floor slab surface corresponding to the existing structure, and lifting steel structure units of the spliced interlayer partitions in place by using a lifting mechanism; and the steel structure units in place are fixedly connected with the existing structure, and construction of one layer of steel structure interlayer is completed after all the interlayer subareas are connected. The steel structure interlayer is selected to be spliced on the floor slab surface in a partitioned mode, the operation difficulty of workers can be lowered, the construction operation progress is accelerated, and the construction quality of the interlayer is improved; and meanwhile, line production construction can be carried out on all the partitions, the construction quality can be improved, the construction period can be shortened, and all resources can be reasonably utilized on the premise that construction safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to a construction method for a steel structure mezzanine. Background Technology

[0002] Currently, with urban expansion, economic development, and improved living standards, more and more large-scale public buildings are emerging, and super high-rise buildings are common in cities of all tiers. Adding a steel mezzanine to a concrete structure as an equipment layer can meet the overall aesthetic requirements of the building while reducing the space occupied by equipment in public areas. However, the limited working space within the concrete structure increases the difficulty of constructing the steel mezzanine. Using individual, disassembled components for assembly results in a large workload and slow installation progress, leading to a long construction period. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a construction method for steel structure mezzanine, which solves the problems of small construction space, high construction difficulty, large workload, slow installation progress and long construction period of existing steel structure mezzanine construction.

[0004] The technical solution to achieve the above objectives is:

[0005] This invention provides a construction method for a steel structure mezzanine, used to install the steel structure mezzanine on an existing structure. The construction method includes the following steps:

[0006] The steel structure mezzanine to be constructed is divided into multiple mezzanine zones.

[0007] Multiple mezzanine sections are divided on the floor slab corresponding to the existing structure and assembled sequentially. The steel structure units of the assembled mezzanine sections are then lifted into place using a lifting mechanism.

[0008] The steel structure units are connected and fixed to the existing structure. Once all mezzanine sections are connected, the construction of the first-floor steel structure mezzanine is completed.

[0009] A further improvement of the construction method of the steel structure mezzanine of the present invention is that, before assembling the steel structure units of the mezzanine partition, a formwork is first set up in the corresponding area on the floor slab, and the formwork is placed at the connection node between the steel hanging column and the steel beam in the steel structure unit.

[0010] A further improvement of the construction method of the steel structure mezzanine of the present invention is that, during the construction of the existing structure, connecting embedded parts are pre-embedded at the positions of the steel hanging columns in the steel structure mezzanine.

[0011] After the steel column is lifted into place, it is welded and fixed to the corresponding connecting embedded parts.

[0012] A further improvement of the construction method of the steel structure mezzanine of the present invention is that a connecting lug is provided at the top of the steel hanging column, and the connecting lug is used to connect with the lifting mechanism;

[0013] After the steel column is lifted into place, the connecting lug is fitted onto the outside of the connecting embedded part, and the connecting lug is welded and fixed to the connecting embedded part.

[0014] A further improvement of the construction method of the steel structure mezzanine of the present invention is that, while assembling the steel structure unit of the current mezzanine section, the support frame of the next mezzanine section is simultaneously erected.

[0015] While lifting the steel structure unit of the current mezzanine zone, the steel structure unit of the next mezzanine zone is assembled simultaneously, thus forming a continuous construction process between the support of the jigs, the assembly of the steel structure units and the lifting of each mezzanine zone.

[0016] A further improvement of the construction method of the steel structure mezzanine of the present invention is that, before lifting the steel structure unit, a lifting mechanism is set on the upper floor slab. The lifting mechanism includes a movable lifting support frame, an electric hoist set on the top of the lifting support frame, a lifting beam connected to the electric hoist, and at least two lifting ropes connected to the lifting beam.

[0017] After moving the lifting support frame of the lifting mechanism to the corresponding position, the lifting support frame is fixed.

[0018] At least two lifting ropes are passed through the reserved holes in the upper floor slab and connected to the corresponding steel structure unit, and then the electric hoist is used to lift the steel structure unit into place.

[0019] A further improvement to the construction method of the steel structure mezzanine of the present invention is that the steel beams in the steel structure unit that are connected to the existing structure are installed by lifting and then installing them.

[0020] A further improvement to the construction method of the steel structure mezzanine of the present invention is that corbels are set at corresponding parts of the existing structure, and the corbels are connected to the steel beams that are lifted and then installed in the steel structure unit.

[0021] A further improvement of the construction method of the steel structure mezzanine of the present invention is that, when setting up the lifting mechanism, the position of the lifting mechanism is arranged according to the structural shape of the steel structure unit to be lifted, and the number of lifting mechanisms is set according to the lifting weight of the steel structure unit to be lifted.

[0022] A further improvement of the construction method of the steel structure sandwich in this invention is that the area is divided according to the shape of the steel structure sandwich and the lifting weight.

[0023] The beneficial effects of the construction method for the steel structure sandwich layer of the present invention are as follows:

[0024] The steel structure mezzanine of this invention is assembled in sections on the floor slab, which reduces the difficulty of operation for workers, speeds up the construction process, and improves the construction quality of the mezzanine. At the same time, each section can be constructed in a continuous flow manner, which can improve the construction quality, shorten the construction cycle, and ensure the rational use of various resources while ensuring construction safety.

[0025] The steel structure units of each section of the steel structure mezzanine of the present invention are lifted and positioned using a lifting mechanism, which makes construction simple and convenient. After the steel structure unit of one section is lifted, it can be moved to the position of the next section to carry out the corresponding steel structure unit lifting operation.

[0026] This invention effectively solves the technical problems of small construction space, difficulty in ensuring quality, high construction difficulty and long construction period in steel structure mezzanine construction. Attached Figure Description

[0027] Figure 1 This is a flowchart of the construction method for the steel structure sandwich layer of the present invention.

[0028] Figure 2 This is a top view of the steel structure sandwich layer in the construction method of the steel structure sandwich layer of the present invention.

[0029] Figure 3 This is a schematic diagram of the structural division of the steel structure mezzanine area in the construction method of the steel structure mezzanine of the present invention.

[0030] Figure 4 This is a schematic diagram of the structure of the steel structure mezzanine construction method of the present invention, in which the connecting embedded parts and steel hanging columns are set at the upper floor slab.

[0031] Figure 5 This is a schematic diagram of the connection between the lifting mechanism and the steel hanging column in the construction method of the steel structure mezzanine of the present invention.

[0032] Figure 6 This is a schematic diagram of the lifting mechanism for hoisting the steel column into place in the construction method of the steel structure mezzanine of the present invention.

[0033] Figure 7 This is a structural schematic diagram showing the location of the steel structure unit and the lifting mechanism in the first mezzanine area of ​​the steel structure mezzanine construction method of the present invention.

[0034] Figure 8 This is a schematic diagram of the steel beams installed after the steel structure unit is lifted and connected to the existing structure in the construction method of the steel structure mezzanine of the present invention. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] See Figure 1 This invention provides a construction method for steel structure mezzanine floors. It employs techniques such as assembling the steel structure mezzanine in sections on the ground or floor slab, using movable, independent lifting support frames for section lifting and positioning, and connecting each section of the steel structure mezzanine to the main structure as a whole. These measures effectively solve a series of technical problems associated with steel structure mezzanine construction, including limited construction space, difficulty in ensuring quality, complex construction operations, and long construction periods. This results in a scientific, economical, and efficient method for the section lifting and installation of steel structure mezzanine floors, achieving a series of significant engineering benefits. The construction method for steel structure mezzanine floors of this invention will be described below with reference to the accompanying drawings.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0038] See Figure 1 The flowchart illustrates the construction method of the steel structure sandwich layer of the present invention. The following is in conjunction with... Figure 1 The construction method of the steel structure sandwich layer of the present invention will be described.

[0039] like Figure 1 As shown, the construction method of the steel structure mezzanine of the present invention is used to install the steel structure mezzanine on an existing structure. The construction method includes the following steps:

[0040] Execute step S101 to divide the steel structure mezzanine to be constructed into multiple mezzanine zones; then execute step S102.

[0041] Execute step S102, divide the existing structure into multiple mezzanine partitions on the floor slab, assemble them sequentially, and use a lifting mechanism to lift the assembled steel structure units of the mezzanine partitions into place; then execute step S103.

[0042] Execute step S103 to connect and fix the positioned steel structure unit to the existing structure. Once all mezzanine partitions are connected, the construction of the first-floor steel structure mezzanine is completed.

[0043] The steel structure mezzanine of this invention is used for installation on existing structures, forming equipment installation space on the existing structures, and can add an equipment mezzanine area of ​​approximately 2000m². 2 The existing structure is preferably an existing concrete structure. This invention uses segmented assembly on the ground or floor slab before lifting and installing it in place, which can realize segmented assembly, lifting and installation fixation.

[0044] Furthermore, the areas are divided according to the shape of the steel structure mezzanine and the lifting weight.

[0045] When assembling steel structures in sections, the main considerations are the shape of the steel structure mezzanine in different areas, the overall lifting weight, and the connection relationship with the concrete structure. For example... Figure 2 and Figure 3 As shown, a steel sandwich structure is illustrated. Figure 3 The diagram shows that the steel structure mezzanine has been divided into seven zones, namely the first mezzanine zone to the seventh mezzanine zone.

[0046] Furthermore, before assembling the steel structure units of the mezzanine partition, a formwork is first set up in the corresponding area on the floor slab, and the formwork is placed at the connection node between the steel hanging column and the steel beam in the steel structure unit.

[0047] Preferably, the formwork is made of welded steel lattice frame, and the height of the formwork is 1.2m to facilitate the work of construction workers.

[0048] Furthermore, while assembling the steel structure units of the current mezzanine section, the jig support for the next mezzanine section is simultaneously carried out.

[0049] While lifting the steel structure unit of the current mezzanine zone, the steel structure unit of the next mezzanine zone is assembled simultaneously, thus forming a continuous construction process between the support of the jigs, the assembly of the steel structure units and the lifting of each mezzanine zone.

[0050] Assembling the floor slab in sections reduces the difficulty of construction operations for workers, speeds up the construction process, and improves the construction quality of the steel structure mezzanine. At the same time, each section can be constructed in a continuous flow manner, which improves construction quality, shortens the construction cycle, and allows for more rational allocation of resources while ensuring construction safety.

[0051] The construction of the seven mezzanine zones can be carried out in the following order: first mezzanine zone, second mezzanine zone, third mezzanine zone, fourth mezzanine zone, seventh mezzanine zone, fifth mezzanine zone, and sixth mezzanine zone.

[0052] Furthermore, such as Figure 4 As shown, during the construction of the existing structure, a connecting embedded part 12 is pre-embedded at the position of the steel hanging column in the steel structure mezzanine; the connecting embedded part 12 is embedded in the upper floor slab 11.

[0053] After the steel column 21 is lifted into place, the steel column 21 is welded and fixed to the corresponding connecting embedded part 12.

[0054] Furthermore, a connecting lug 23 is provided at the top of the steel column 21, and the connecting lug 23 is used to connect with the lifting mechanism;

[0055] Combination Figure 6As shown, after the steel column 21 is lifted into place, the connecting ear plate 23 is fitted onto the outside of the connecting embedded part 12, and the connecting ear plate 23 is welded and fixed to the connecting embedded part 12.

[0056] In one specific embodiment of the present invention, such as Figure 5 As shown, before lifting the steel structure unit, a lifting mechanism is set on the upper floor slab. The lifting mechanism includes a movable lifting support frame 241, an electric hoist 242 set on the top of the lifting support frame 241, a lifting beam 243 connected to the electric hoist 242, and at least two lifting ropes 244 connected to the lifting beam 243.

[0057] After moving the lifting support frame 241 of the lifting mechanism to the corresponding position, fix the lifting support frame 241.

[0058] At least two lifting ropes 244 are passed through the reserved holes on the upper floor slab 11 and connected to the corresponding steel structure units, and then the steel structure units are lifted into place by the electric hoist 242.

[0059] Furthermore, the lifting rope 244 is connected and fixed to the connecting ear plate 23. After the connecting ear plate 23 is welded and fixed to the corresponding connecting embedded part 12, the connection between the lifting rope 244 and the connecting ear plate 23 is then released.

[0060] Furthermore, when setting up the lifting mechanism, the positions of the lifting mechanisms are arranged according to the structural shape of the steel structure unit to be lifted, and the number of lifting mechanisms is set according to the lifting weight of the steel structure unit to be lifted. For example... Figure 7 As shown, a lifting mechanism is installed at position A of the steel structure unit 20 in the first mezzanine partition.

[0061] Preferably, a movable, independent lifting support frame is used for segmented lifting and positioning. This involves installing a movable, independent lifting support frame one level above the lifting layer. Electric hoists are mounted on the support frame for lifting the steel structure mezzanine. Each electric hoist has a steel spreader beam underneath, which divides the hoist's wire rope into two for synchronous lifting. The two wire ropes under the spreader beam are fixed to the hanging column ear plates of the steel structure mezzanine through pre-drilled circular holes in the structural floor slab. As the electric hoists lift, the segmented lifting and positioning of the steel structure mezzanine is completed. The lifting capacity of the electric hoist is selected based on the weight of each segment of the steel structure mezzanine. The support frame adopts a modular installation type, with column specifications of 0.5m and 1m length, which can be combined and selected according to different lifting heights to meet various needs. It is also easy to assemble, disassemble, and move. The pre-drilled holes in the floor slab are round holes, preferably 40mm in diameter, and are pre-drilled using PVC pipes before concrete pouring.

[0062] Furthermore, such as Figure 8As shown, the steel beam 22, which is connected to the existing structure in the steel structure unit, is installed by lifting and then installing it.

[0063] Corbels are installed at corresponding locations in the existing structure, and the corbels are connected to the steel beams that are lifted and then installed in the steel structure unit.

[0064] After each segment of the steel structure mezzanine is in place, it is connected to the main structure as a whole. The main process involves welding the steel hanging columns and embedded parts of the steel structure after the steel structure mezzanine is lifted into place. Other steel beams in the segment area that overlap with the concrete structure brackets are installed and fixed. The segment of the steel structure mezzanine forms a stable system, and the next segment of the steel structure mezzanine can be lifted.

[0065] The construction method of this invention adopts technical measures such as assembling steel structure mezzanine in sections on the ground, setting up movable independent lifting support frames for lifting and positioning the sections, and connecting each section of the steel structure mezzanine to the main structure as a whole after positioning. This effectively solves a series of technical problems such as small construction space, difficulty in ensuring quality, high construction difficulty, and long construction period for steel structure mezzanine. It forms a scientific, economical and efficient construction method for segmented lifting and installation of steel structure mezzanine, and has achieved a series of significant engineering benefits.

[0066] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A construction method for a steel structure mezzanine, used to install a steel structure mezzanine on an existing structure, characterized in that, The construction method includes the following steps: The steel structure mezzanine to be constructed is divided into multiple mezzanine zones. Multiple mezzanine sections are divided on the floor slab corresponding to the existing structure and assembled sequentially. The steel structure units of the assembled mezzanine sections are then lifted into place using a lifting mechanism. The steel structure units are connected and fixed to the existing structure. Once all mezzanine sections are connected, the construction of the first-floor steel structure mezzanine is completed.

2. The construction method for the steel structure mezzanine as described in claim 1, characterized in that, Before assembling the steel structure units of the mezzanine partition, a formwork is first set up in the corresponding area on the floor slab, and the formwork is placed at the connection node between the steel hanging column and the steel beam in the steel structure unit.

3. The construction method for the steel structure mezzanine as described in claim 1, characterized in that, During the construction of the existing structure, connecting embedded parts are pre-embedded at the locations of the steel hanging columns in the steel structure mezzanine; After the steel column is lifted into place, it is welded and fixed to the corresponding connecting embedded parts.

4. The construction method for the steel structure mezzanine as described in claim 3, characterized in that, A connecting lug is provided at the top of the steel column, and the connecting lug is used to connect with the lifting mechanism; After the steel column is lifted into place, the connecting lug is fitted onto the outside of the connecting embedded part, and the connecting lug is welded and fixed to the connecting embedded part.

5. The construction method for the steel structure mezzanine as described in claim 1, characterized in that, While assembling the steel structure units of the current mezzanine section, the formwork support for the next mezzanine section is simultaneously constructed. While lifting the steel structure unit of the current mezzanine zone, the steel structure unit of the next mezzanine zone is assembled simultaneously, thus forming a continuous construction process between the support of the jigs, the assembly of the steel structure units and the lifting of each mezzanine zone.

6. The construction method for the steel structure mezzanine as described in claim 1, characterized in that, Before lifting the steel structure unit, a lifting mechanism is set on the upper floor slab. The lifting mechanism includes a movable lifting support frame, an electric hoist on the top of the lifting support frame, a lifting beam connected to the electric hoist, and at least two lifting ropes connected to the lifting beam. After moving the lifting support frame of the lifting mechanism to the corresponding position, the lifting support frame is fixed. At least two lifting ropes are passed through the reserved holes in the upper floor slab and connected to the corresponding steel structure unit, and then the electric hoist is used to lift the steel structure unit into place.

7. The construction method for the steel structure mezzanine as described in claim 1, characterized in that, The steel beams in the steel structure unit that are connected to the existing structure are installed by lifting them before installation.

8. The construction method for the steel structure mezzanine as described in claim 7, characterized in that, Corbels are installed at corresponding locations in the existing structure, and the corbels are connected to the steel beams that are lifted and then installed in the steel structure unit.

9. The construction method for the steel structure mezzanine as described in claim 1, characterized in that, When setting up the lifting mechanism, the position of the lifting mechanism is arranged according to the structural shape of the steel structure unit to be lifted, and the number of lifting mechanisms is set according to the lifting weight of the steel structure unit to be lifted.

10. The construction method of the steel structure mezzanine as described in claim 1, characterized in that, The areas are divided according to the shape of the steel structure mezzanine and the lifting weight.

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