In the prefabricated building, there are wood structure, there are steel structure factory buildings, their characteristics are different, below, let's take a look at the two kinds of structure of prefabricated housing are what the difference!

One, steel structure and wood structure residential in the economic difference

Steel structure housing economy is greater obstacles hindering the development of the steel structure housing, according to the development level of our existing steel structure, steel structure residential construction cost around 10% to 20% higher than the reinforced concrete residential, but the steel structure housing a concrete structure can save 30% on the basis of cost, and the steel structure housing to room rate is 7% to 10% higher concrete housing, In addition, the construction period of steel structure housing can be reduced by about 30%.

With RESPECT TO THE TIMBER STRUCTURE HOUSE THAT DOMESTIC IMPORTS AT PRESENT, COST PRICE SHOULD BE IN 4000 TO 8000 YUAN PER SQUARE METER GENERALLY, VISIBLE SHOULD BE FAR HIGHER THAN THE COST OF ORDINARY REINFORCED CONCRETE AND MASONRY BUILDING, THIS IS DIFFICULT TO ACCEPT TO GENERAL DEVELOPER AND ORDINARY USER. However, with the rapid development of Chinese economy, the gradual formation and growth of high income group, they mean the maturity of consumption and the improvement of life quality, this "warm" green environmental protection housing, which merges into one organic whole with the nature, has the market for sure.

Second, steel structure and wood structure residential seismic performance of the difference

The steel structure has good ductility and can offset the energy consumption of seismic waves. Steel is basically isotropic material, tensile, compressive and shear strength are very high, and has good ductility, especially the steel structure with its own unique high ductility to reduce the earthquake response. Steel structure can also be regarded as an ideal elastic-plastic structure, which can absorb and consume the input energy of earthquake through the plastic deformation of the structure, so that it has a high ability to resist strong earthquakes. The steel structure is relatively light compared with other structures, which greatly reduces the impact of earthquake.

The wooden structure also has certain aseismatic function, but because the layer number of the wooden structure building is generally low, it does not adapt to the increasingly nervous land resources, and cannot reach the requirements of the high-rise building. Chengdu steel structure attic manufacturers have to say, steel structure housing and wood structure housing has a certain similarity, standing in the perspective of long-term development, the promotion and wide use of steel structure housing is our future feasible choice.

Three, steel structure and wood structure residential fire performance of the difference

The strength of large section wood structure is maintained longer than that of metal when exposed to fire. Steel beams melt and collapse onto carbonized wood beams; Although the wooden beams were badly damaged, they remained in place. A 406 mm, 60 kg/m steel beam (W16X40) with a 178 mm x533 mm glued beam was subjected to fire tests under full load. The steel beams collapsed within 30 minutes of exposure to fire, but the glulam structure remained upright, with only 19 mm of carbonization on the exposed surface.

Generally speaking, the larger the section of wood, the better the fire performance. The temperature of a building fire is between 700 and 900 degrees Celsius. At 230 degrees, the strength of steel drops dramatically. At 750 degrees, it's only 10% of its original strength. Normally, wood only burns at 250 degrees. Wood is usually carbonized at a rate of 0.64 mm per minute under intense fire conditions. The carbonized layer naturally isolates the wood from the outside world and increases the temperature the wood can withstand.

The reason why large wood components have good fire resistance is because of the carbonization of wood. When wood components are exposed to fire, the carbonization layer formed on the surface plays a good heat insulation role, which protects the internal components from further action of fire.

In general, no matter which kind of prefabricated building structure can achieve the role of energy saving and emission reduction, but the price will be higher than the traditional brick and concrete structure of the house. However, after all, the two structures of prefabricated housing materials are different, their characteristics will also have a clear difference, if you need to build a prefabricated building house, according to their characteristics to decide which material to build a prefabricated house.