Discussion on the design of metallurgical industry building renovation project

Metallurgical industrial buildings is an important part of business productivity. The sustainable development of enterprises requires enterprises to improve and update their production processes and equipment, which inevitably involves the transformation of existing buildings. Doing a good job in the design of metallurgical industrial building renovation projects is the key to reducing the amount of renovation works, shortening the construction period, and saving civil construction investment.

1 metallurgical industry building renovation project design features  　　

Metallurgical industrial buildings are not only large, crowded, but also complex, with heavy load, high temperature, large dust, complex corrosive medium factors, frequent water and steam effects. 

(1) Subject to the limitations of the original plant space, underground structures and production pipelines, the technical status of the original plant should be thoroughly and carefully investigated and tested before the transformation and design, and a correct evaluation should be made. When designing the design, the bearing capacity of the original structure should be fully considered, the amount of reconstruction work should be reduced as much as possible, the construction period should be shortened, and the investment in transformation should be saved. 

(2) The selection of the structure and the selection of materials should consider the overall economic effects. In order to shorten the construction period and shorten the production stoppage time, the structural selection and material selection of the renovation project should be combined with its own characteristics, economic benefits, supply of materials and materials, and the principle of optimal economic effect should be carried out. It is not necessary to be too rigid about the individual components or the structure itself. Cost. It is reasonable to use metal structures or other structures that are simple and feasible in the renovation project ( component anti-corrosion treatment should be in place at the same time ) .

(3) Strive to make the structural strength and rigidity of the reconstructed part balanced with the original structure, and pay attention to the structural integrity after the transformation. The metallurgical industry building renovation project stresses that the old and new structures after the transformation are strong, the service life is equivalent, the stiffness is balanced, and the structural integrity is not affected. If you do not pay attention to this point, the rigidity of individual components after reconstruction and reinforcement is too large, not only uneconomical, but will cause stress concentration and damage in the earthquake, resulting in adverse consequences. 

(4) Minimize the amount of underground works. Metallurgical Industry Building Renovation project site complex, the venue is small, if we dig trenches for the laying of underground pipe replacement or CAPE, the situation is bound to worsen the construction site, sometimes thus endangering the superstructure or the adjacent building (structure) building The safety of things. In order to reduce the amount of underground engineering, it is considered to replace some newly added pipe networks with overhead, and at the same time make full use of the carrying capacity of the original buildings, so that the new pipe network is carried by the original buildings. 

(5) The overall transformation of metallurgical industrial buildings should take into account the needs of long-term development. Large-scale reconstructions such as overhaul or in situ reconstruction should fully consider the continued development of future production processes and make buildings sufficiently adaptable. To this end, the span and column spacing should be appropriately increased to increase the load reserve to ensure a certain flexibility of the reconstructed building. In the future technological transformation of enterprises, the plant should be changed as little as possible or not, so as to avoid unnecessary waste.

2 problems calling for attention 

2.1 Do a good job in data collection before design 　　

In addition to collecting general hydrogeology, meteorology, construction machinery, component manufacturing capabilities, process equipment and design requirements for various disciplines, it is also necessary to collect information related to the reconstructed buildings.

The main data items are as follows: 

  (1) The relationship between the layout, specifications, dimensions, depth of the underground pipeline and the size of the reconstructed building. 

(2) The relative elevation of the floor of the reconstructed building and the adjacent production workshop and the absolute elevation of each workshop floor. 

  (3) Deformation records of the original building after use, including: settlement observation records of the building since its construction and production; column inclination measurement records; crane track adjustment records; crane beam surface, crane beam and beef leg surface on each axis The absolute elevation value; the absolute elevation value of the chord at the ends and across the chord. 

(4) Maintenance inspection records of the original buildings; records of the use and update of major equipment in the workshop. 

(5) Civil construction drawings and as-built drawings of the original buildings, including construction drawings and as-built drawings for future maintenance and renovation. 

(6) When the above information cannot be collected, the original building and its components shall be measured, including the flat, section size, elevation and reinforcement and steel specifications.  　　

The adequacy of the data collection work directly affects whether the process of the renovation project can be established, whether the equipment can be placed, whether the length of the renovation period and the construction can continue in the future, the designer should pay enough attention.

2.2 Give full play to the role of civil engineering in the renovation project The determination of metallurgical enterprise transformation project is often restricted by the site, underground pipe network and original buildings. The key is to adopt new technology and new equipment in the transformation under the existing conditions of mutual restraint. The use of old buildings can meet the requirements of the production process.  　　

The professional division of labor in the current renovation engineering design is getting more and more fine, and the professionalism is getting stronger and stronger. Therefore, it is necessary to rely on the close cooperation of various professions to give full play to the role of each major in the transformation project. In the limited layout and space to meet the requirements of various professions, there will often be contradictions, and these contradictions will often be reflected in the design work of civil engineering. Since the civil engineering profession first finds problems and contradictions in the design work, it can point out the contradictions to each profession and propose ideas for resolving contradictions for reference by various professions.  For example: Shandong Aluminum Industry Company (referred to Shanlv) by the end of 2001 clinker in one of the broken system overhaul project is the North station clinker hoist transformation. The original design of the mechanical profession is to increase the width of the hoist hopper and increase the amount of clinker lifting per unit time of the hoist, requiring the civil engineering professional to cross + 8.00m , + 20.00m The hoist hole of the floor is used to dismantle the beam and expand the hole. After the civil workers collected and checked the information, they found that + 8.00m Floor structure after renovation, slab bearing structure has changed and expanded the hole required for the entire Demolition + 8.00m The re-arrangement of the floor beam structure will inevitably affect the normal operation of the Nantai clinker hoist and skirt-type transmission equipment. Obviously the program will not work. After various professional discussions and arguments, the possibility of increasing the width of the hoist hopper was denied, and it was decided to increase the height of the hoisting hopper. To this end, in addition to strengthening the close cooperation of various professions and paying attention to the role of various professions, the civil engineering profession should participate in the research, discussion and decision of major issues and technological solutions in the renovation project as soon as possible. 

2.3 adapt to local conditions Full use of the site conditions  　　

Metallurgical enterprises need to transform industrial buildings. The site has been used and expanded for many years and is very crowded. The general plan and the plane design of the plant should be combined with the requirements of the process transformation, the compact layout according to local conditions, the full use of the site conditions, the multi-functional comprehensive use space, and the adjustment of the layout of the interior of the plant, in order to make the transformed plane as reasonable, regular and use as possible. Convenient and economical use of land, the old factory will be transformed into a new workshop with good conditions.

2.3 rational use of old industrial buildings  　　

The metallurgical enterprise transformation project is closely related to the production efficiency of the enterprise. As the designer of industrial building renovation project, it should make full and reasonable use of old industrial buildings, avoid large-scale demolition and unloading as much as possible, actively apply advanced technology, advanced technology, new building materials, and strengthen and partially replace the load-bearing structure of old industrial buildings. The method is rebuilt on site to meet the needs of new production processes, so that the reconstruction can achieve the goal of less investment, short construction period and high efficiency.

3 Conclusion 