Installation of three-dimensional parking space fo

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Installation of Lianjiang large mechanical three-dimensional parking lot

installation of Lianjiang large mechanical three-dimensional parking lot dggtey

installation of Lianjiang large mechanical three-dimensional parking lot it is understood that the tower uses more than 1500 giant prefabricated beams, 1.5 million rivets, 12000 steel castings, with a total weight of 7000 tons, which took 250 workers 17 months to build

Kuala Lumpur twin towers

Kuala Lumpur twin towers are located in meizhilu, the center of Kuala Lumpur. They are 88 floors high. They are the installation steel structure of today's

lianjiang large mechanical three-dimensional parking space, which is divided into light steel and heavy steel. There is no unified standard for judgment, and many experienced designers or project managers often cannot fully explain it, so they can comprehensively consider and judge it with some data

installation quality control

sound insulation technology light steel structure fills glass wool between inner and outer walls and floor joists, effectively preventing the audio part transmitted through the air. For the impact sound transmitted through solids, the following structural treatment is made: for the household wall, two wall columns are used to form two walls with intermediate gaps; For the small keel of the fixed gypsum board used for the ceiling, the elastic structure with small grooves is used to effectively reduce the solid sound transmission between floors

construction technology

connection method

welding connection

bolt connection

rivet connection

heavy steel structure

1. Lifting weight of plant truss: ≥ 25 tons

2. Steel consumption per square meter: ≥ 50kg/㎡

light steel structure

refers to the use of round steel and less than L4, but the industrial transformation capacity of technical achievements is still less than 5 × 4 and L56 × thirty-six × 4 light steel structure made of angle steel. There is no such thing as Chongqing Iron and Steel Co., Ltd. in national specifications and technical documents

code for design of steel structures GBJ has been abolished since December 1st, 2003. At present, the code for design of steel structures GB

equipment steel structure

equipment steel structure refers to the steel structure part of large equipment. According to the experience of technicians, the following structures should be classified into the category of equipment steel structure: tower steel structure of bridge erecting machine, crane lifting girder, crane body, large equipment support, etc, It belongs to the installation support of precision, material and connection

lianjiang large machinery three-dimensional parking space. The sling and lanyard play a stabilizing role on the mast at the same time

it is understood that the Millennium Dome covers an area of 73 hectares and a total cost of 1.25 billion US dollars, including a series of exhibition and performance venues, as well as shopping malls, restaurants, bars and so on

1. The steel structure has light self weight

2. The steel structure has high reliability

3. The vibration resistance (earthquake) of steel Good impact resistance

4. High industrialization of steel structure manufacturing

5. Steel structure can be assembled accurately and quickly

6. Large indoor space of steel structure

7. It is easy to make a sealed structure

8. Steel structure is prone to corrosion

9. Poor fire resistance of steel structure

10. Steel structure can be recycled

11. Short construction period of steel structure


1. Carbon structure steel: Q195, Q215, Q235, q255 Q275 and other

2. Low alloy high-strength structural steel

3. High quality carbon structural steel and alloy structural steel

4. Special purpose steel


there is indeed no unified standard for judging the structure as heavy steel and light steel structure, and many experienced designers or project managers often cannot fully understand it, but we can comprehensively consider and judge it with some data:

load capacity, It is suitable for areas with seismic intensity of more than 8 degrees unless special specifications of yield point or other special experiments are done. "Liaozengtai, chairman of Wanhua Chemical Group Co., Ltd., said that Wanhua chemical Yantai Industrial Park, which is expected to be built by Wanhua Group with a total investment of 70billion yuan

wind resistance

steel structure building has light weight, high strength, good overall rigidity and strong deformation capacity. The self weight of the building is only five times that of the brick concrete structure, which can resist the hurricane of 70 meters per second, so that life and property can be effectively protected


the residential structure of light steel structure is all composed of cold-formed thin-walled steel member system, and the steel bones are made of super anti-corrosion high-strength cold-rolled galvanized sheet, which effectively avoids the influence of corrosion of steel plates in the process of construction and use, and increases the service life of light steel members. The service life of the structure can reach 100 years

thermal insulation

the thermal insulation material used is mainly glass fiber cotton, which has good thermal insulation effect. The thermal insulation board used for the external wall effectively avoids the "cold bridge" phenomenon of the wall, and achieves a better thermal insulation effect. The thermal resistance value of R15 insulation cotton with a thickness of about 100mm can be equivalent to a brick wall with a thickness of 1m

sound insulation

sound insulation effect is an important index for evaluating residential buildings. The windows installed with light steel system adopt hollow glass, which has good sound insulation effect, and the sound insulation reaches more than 40 db; The sound insulation effect of the wall composed of light steel keel and thermal insulation material gypsum board can be as high as 60 dB


the construction quality problems of steel structure engineering will continue to develop and change with the external changes and the extension of time, and the quality defects will gradually manifest. For example, due to the change of stress in the weld of steel members, the original weld without cracks will produce cracks: delayed cracks can be produced due to the action of hydrogen activity in the weld after welding. In addition, if the member is overloaded for a long time, the steel member will have bending deformation under the arch, resulting in hidden dangers

(IV) frequent

because modern buildings in China are mainly concrete structures, managers and technicians engaged in construction are relatively unfamiliar with the fabrication and construction technology of steel structures, and specific construction personnel mainly migrant workers do not understand the scientific construction methods of steel structure engineering, resulting in frequent accidents in the construction process

steel structures are prone to corrosion

steel structures must be protected, especially thin-walled members. Therefore, steel structures should not be used for buildings in highly corrosive media. The steel structure shall be thoroughly derusted before painting, and the paint quality and coating thickness shall meet the requirements of relevant specifications. In the design, damp and rain leakage of the structure shall be avoided, and the dead corner of inspection and maintenance shall be avoided as far as possible in the structure. Newly built steel structures are generally rebuilt at regular intervals

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