by Ø greatly reduce potential construction safety hazards, and there is no welding and painting pollution on the construction site.
If the elevation is increased, the volume and mass of the frame will become larger, resulting in unstable center of gravity and inconvenient transportation.
Advantages: the refined BIM model solves all errors before installation, and can be installed without drawings in the assembly stage.
Ø it can operate in parallel with other disciplines, with fast overall construction period and significantly improved construction quality.
Development Mode of assembly machine room at the present stage 1.1 traditional assembly machine room traditional assembly machine room optimizes all pipes in the machine room through BIM design, and generates processing drawings by pipe sections.
Considering the installation efficiency and convenience, modular components have high industrialized production efficiency, which is conducive to the later transportation, assembly, overhaul and maintenance of the equipment.
After the connection of each group of modules, the construction of the whole machine room is completed.
Each group of steel structure frames can be quickly connected to each group of modules through bolt connection.
Two modular assembly room implementation process modular assembly room – the implementation of the program needs to start from three aspects: standardized design stage, standardized module resolution stage and standardized component design stage.
Ø modular assembly requires high civil engineering quality of the machine room, and the flatness shall meet the equipment installation requirements.
Advantages: modular and standardized design, standardized disassembly, assembly, and industrial production.
At the same time, the cost of section steel will be greatly increased.
In the later installation process, due to the influence of the technical level of constructors, similar assembly processes and accumulated errors affect the commissioning efficiency and increase the later operation and maintenance workload.
The main content of this study is to standardize the disassembly of the inlet pipe section, outlet pipe section and main pipe section of the pump unit module through enterprise level standardized design, standardize the design of the split components, and then mass prefabricate and produce in the factory, so as to be suitable for the on-site construction of most fabricated machine rooms.
Implementation process: divide all machine room pipes and fittings into standard functional modules according to functional modules, such as water pump module, air conditioning host module, etc.
The factory produces pipes and fittings according to the drawings, and numbers all pipes according to the assembly sequence.
Each group of modules adopts steel structure support as the frame.
The first mock exam is not only confined to the air conditioning room, but also the fire pump house.
Ø in the design of components and spare parts, each project needs to be customized separately.
At the same time, standardized design is divided into enterprise level and project level.
Ø various types of equipment modules will cause more waste of steel and put forward higher requirements for structural bearing capacity.
By comparing the above two prefabricated machine room solutions, there is no unified standard in design, production and construction, which needs to be customized separately for different projects, so it is impossible to make all projects universal.
Ø effectively realizing the advantages of energy saving and consumption reduction has promoted the development of electromechanical installation industry to a certain extent.
However, the industry benchmark enterprises are actively responding to the relevant national policy guidance and increasing investment, from the initial trial stage to the current in-depth application stage, One assembled machine room after another is presented to us, and the construction speed of the machine room is constantly refreshed.
Disadvantages: customized design is still required for each project, and a unified quality standard cannot be formed.
Modular assembly of the processed components, such as water pump module inlet and outlet pipe group, etc.
Through the application of BIM Technology in practical projects, we have explored and studied the problems existing in the design, production and construction of the assembled machine room, and developed an overall solution of modular assembled machine room based on BIM, BIM Technology is used to carry out standardized disassembly, standardized design and industrial production of various pipeline equipment modules in complex and compact equipment room.
In the past two years, the prefabricated construction has gradually extended to the complex equipment room, which is the place where the mechanical and electrical installation engineering equipment and pipelines are most concentrated, and the prefabrication and assembly is very difficult.
Advantages: the machine room is divided into several modules for assembly.
I.
Finally, it is transported to the site for installation and construction.
Ø material prefabrication, no processing on site, saving time and materials.
are combined into a group of prefabricated modules, and then mechanically connected with another group of modules through one group of modules, The rapid assembly of the machine room can be realized, but according to the actual situation of the assembly construction site and R & D investment, it does not have the ability to fully realize modular assembly.
After transportation to the site, the construction can be completed only by assembling each module, which will be described one by one below..
The design cost and production cost are relatively high, so it is impossible to produce large-scale industrialization.
Through standardized product components, the installation efficiency can be greatly improved and the installation cost can be reduced.
Location and numbering of on-site assembly pipeline Figure 1.2 modular assembly machine room according to the type selection, quantity, system classification of water pumps and equipment layout in the machine room, 2-3 water pumps, pipelines, accessories, valve components, damping blocks, etc.
Modular assembly in the factory.
Ø non standard pipe section design can be prefabricated after frequent on-site measurement.
Ø fast construction cycle and high efficiency of assembly installation.
Ø for equipment with large volume and weight such as air conditioning host, it can not be transported after modularization, and it is difficult to put it in place on site.
The computer room of the living pumping house can be unified modular design, production and installation.
Disadvantages: BIM’s detailed design is quite arbitrary and needs to be customized for each project, which can not form a unified quality standard.
Ø due to the modular design, the elevation of the main pipe section becomes too low and the overall pipeline of the machine room is depressed, which does not comply with the principle of mechanical and electrical installation and pipe top installation.
There are many on-site assembly parts, which are easy to be disordered during assembly, and the quality of pure manual method is low.
The decomposition module is divided into components, the separated pipeline components are standardized, and the direct cost is reduced through industrial production.
