Is the light steel villa good or not? What's the difference between brick-concrete structure, frame structure and light steel structure?

According to the National Bureau of Statistics, about 5 million rural houses are built or rebuilt every year. In 20 17, the new policy of rural housing ownership was introduced, and 35 billion ㎡ old rural houses will be demolished and rebuilt in the future; From 20 15 to 20 18, the area of self-built houses in rural areas in China exceeded1200 million square meters every year.

At present, several mainstream building structures include: brick-concrete structure, frame, light steel and precast concrete (PC). Today we will introduce the differences between these four structures.

Concrete and brick structure

Brick-concrete structure is a load-bearing structure, with a little reinforced concrete and most brick walls. Advantages: 1, relatively cheap; 2, the construction difficulty is low; 3. Good sound insulation and heat preservation performance; 4. Good mass base; It's easy to use local materials. The construction period is about 6 months.

frame construction

Frame structure is a load-bearing system composed of beams and columns connected by rigid joints or hinges. Advantages: 1, flexible space separation; 2. Good integrity; 3. Good earthquake resistance. The construction period is about 6 months.

light section steel structure

Light steel structure is a structure composed of steel, and components or parts are connected by welding, bolts or rivets. Advantages: 1 Compared with brick-concrete houses, light steel houses can avoid the waste of resources caused by burning bricks with clay in the manufacturing process; 2. The steel of light steel structure can be recycled; 3. Light steel houses have the properties of flame retardant, warm in winter and cool in summer, thermal insulation and sound insulation. 4, the structure is safe and the seismic performance is good; 5, the construction period is short; 6. Light steel keel has after-sales guarantee.

Precast concrete structure

Precast concrete (PC) structure is a concrete structure assembled/connected with precast members as the main stress members. Advantages: 1, the anti-leakage ability of the wall is greatly improved, and it basically does not crack, empty drum or shell; 2, the outer window frame has a good anti-leakage process, and there will be no window seepage; 3. The geometric size of the house can be controlled and can be accurate to the millimeter level; 4, the delivery cycle is fast, and the blank can be delivered in 30 days at the earliest; 4. Environmental protection, 80% water saving in dry operation, 20% material saving in assembly line, and no noise in field assembly.

From the perspective of market acceptance, brick-concrete structure and frame structure have the highest acceptance, so what is the difference between these two structures? Let's look at the main differences between frame structure and brick-concrete structure:

1, technology: the frame structure is to make cast-in-place components such as beam-column plates first, and then build infilled walls; Brick-concrete structure is to build a brick wall first, leaving the position of the constructional column, and then pouring the constructional column and beam slab in turn.

2. Seismic capacity and cost performance: it is a brick-concrete structure, mainly bearing brick walls, and is generally designed according to 6-degree seismic design. This structure is suitable for some areas where earthquakes are rare, and its advantages are high cost performance, economy and practicality; Of course, the stability and seismic performance of frame structure depend on a flight of stairs, and reinforced concrete frame is the main load-bearing structure. Generally, according to the 7-degree seismic design, it is safer and more reliable, and the cost performance is relatively high.

How about building a light steel villa in the countryside?

This problem needs to consider many factors, such as geological conditions, economic conditions, time and construction period. So some people will feel good and some people will feel bad. The exposed decorative layer of light steel villa is the same as that of ordinary brick-concrete structure houses. After about 30 years of exposure to the wind and sun, the decorative materials of the external walls will age and fade accordingly, and the specific need for replacement and maintenance depends on the specific situation.