- Definition of wood structure and steel structure
Wooden structure, as the name suggests, is a structure made of wood. Wood is a structural material that is easy to obtain and easy to process. The wooden structure is light in weight, and the wooden component is easy to transport, assemble and disassemble. It can be used many times, it is widely applied in house construction, bridges and towers. Because of poor fire resistance and unstable seismic performance, ancient Chinese wood-frame building is inferior to other types of building. With the in-depth development of the environmental protection concept of modern green buildings, wood-frame buildings are again favored by modern people and have good development prospects.
The steel structure is a structure composed of steel materials and is one of the main types of building structures. The structure is mainly composed of beam steel, steel column, steel truss and other members made of section steel and steel plate. It adopts silanization, pure manganese phosphating, washing and drying, galvanizing and other rust removal and rust prevention processes. Welds, bolts or rivets are usually used to connect the components or parts.
- Comparative analysis of advantages and disadvantages of wood structure and steel structure
First, the wooden structure is green and environmentally friendly. The building is made of wood, which is a renewable resource and has the characteristics of green, environmental protection, and degradability. At the same time, wooden buildings have better thermal insulation performance, thermal insulation and energy saving performance is better than any other structural forms built with materials. Wood itself is an excellent insulator. Under the same thickness, the heat insulation value of wood is 16 times higher than standard concrete, 400 times higher than steel, and 1600 times higher than aluminum. Therefore, the heating cost of light wood structure housing is relatively low, and it is warm in winter and cool in summer. Secondly, the wooden structure has certain durability. Wood is a stable, long-life, and durable material. Buildings made of wood have the characteristics of anti-settling, anti-drying, and anti-aging, and have remarkable stability. If used properly, the wooden structure can become one of the most durable structures in the existing house structure. Finally, the wooden structure is beautiful and light. The light wood structure, due to its material and structural characteristics, makes the layout more flexible, providing architects with greater imagination space. No other building system can provide such seamless indoor cupboards, partitions and wardrobes, which greatly Save the cost of buying furniture.
However, the wooden structure also has certain shortcomings: due to the flammability of the wood, the fire resistance of the wooden structure is very poor, and many traditional buildings in East Asia, including China, are destroyed by fire; wood is also susceptible to corrosion by moisture and insects. More importantly, the growth cycle of wood is long. Once a wooden structure is used to build a house, a large number of adult trees are required. Unplanned mountain logging in ancient times was a serious damage to the environment.
Steel Structure Directorsteelstructure explained the characteristics of the steel structure house:
The first is earthquake resistance: the roof of the low-rise villas are mostly sloped roofs, so the roof structure is basically a triangular roof truss system made of cold-formed steel members. After the structural plates and gypsum boards are sealed, the light steel members are sealed. A very strong “plate rib structure system” has been formed, which has a stronger ability to resist earthquakes and resist horizontal loads, and is suitable for areas where the seismic intensity is above 8 degrees. Secondly, durability: the light steel structure residential structure is all made of cold-formed thin-walled steel component system, and the steel skeleton is made of super anti-corrosion high-strength cold-rolled galvanized sheet, which effectively avoids the influence of corrosion of the steel plate during construction and use, and adds light steel The service life of components. The structural life can reach 100 years. At the same time, the sound insulation of the steel structure is very good, and the sound effect is an important indicator for evaluating the house. The windows installed in the light steel system use hollow glass, which has good sound insulation effect, and the sound insulation is more than 40 decibels; the wall is composed of polyurethane sandwich insulation material The sound insulation effect can be as high as 80 decibels.
The shortcomings of the steel structure are poor corrosion resistance, heat resistance but not fire resistance. The steel structure loses its bearing capacity above 600 degrees Celsius, and brittle fracture may occur under conditions such as sudden low temperature; the skeleton is slender and when subjected to earthquakes and wind forces There is a certain degree of swing, and for more sensitive users, there will be dizziness and discomfort; at the same time, the cost of construction is higher than the cement structure. At present, there is no widespread popularity in the country.
