Post-disaster concern: what house is the most earthquake-resistant?
Source: | Author:lichengcn | Publish time: 2017-08-24 | 3 Views | Share:

      After the yushu earthquake in qinghai province, the survey showed that the residential buildings in the area were mostly civil structures, and the earthquake resistance was poor and prone to collapse.But the number of deaths from collapsed buildings with no cement has been high, and the number of injuries has been high.
      The death toll from the 8.8 magnitude earthquake in Chile was just 452.The reason is that many residential buildings in the city of concepcion, Chile's second largest city, are steel and are earthquake-resistant.So although the population is densely populated, there are very few casualties.Japan is an earthquake-prone country with a 65% share of the steel structure in Japan.According to the data of Japan's hanshin earthquake, the damage rate of steel structure building in earthquake is much lower than that of concrete structure.Similarly, sichuan wenchuan earthquake, the same steel structure building mianyang gymnasium has not been damaged, and become the main site for the displaced people.The earthquake of yushu earthquake once again touched people's sensitive nerves, and it also highlighted the importance of energy-saving and earthquake-resistant steel structures in the future development of architecture.
      Earthquakes are frequent, causing people to pay more attention to "what building is the most earthquake-resistant".
      Existing building structural forms are mainly composite masonry structure, frame structure, frame shear wall structure, steel structure and the whole integral light steel structure and so on, no matter what kind of structure, as long as reasonable design, highly match the structure form, it should be a shock.However, compared with the same conditions, the main load-bearing materials of the masonry structure are brittle materials, the seismic performance is poor, and the frame structure is slightly better.And the frame shear wall, steel structure and the overall bearing light steel structure, the seismic performance is superior to the first two.
      The so-called "earthquake resistance factor" of the property is not standard.Main consideration in the design of structure seismic grade, the determination of aseismic levels associated with the category of buildings, buildings of different categories when considering seismic grade taking seismic intensity related to the building site categories, namely considering seismic grade access intensity and seismic fortification intensity is not necessarily the same calculation.The building structure should be divided into four categories: a, b, c, and d, according to the importance of its use function, and the general residence and office buildings are class c buildings.
      The earthquake resistance of the house and the family type also have relation, from the ability of earthquake resistance, the house of the flat layer is the best of earthquake resistance.The house of yue layer, double entry and the wrong stratum is dominant in the comfort and beauty of the residence, but to meet the same aseismatic standard of the same building, the measures to be taken will be more.From the design point of view, both high-level and multilayer, as long as strictly according to the standard, all can meet the seismic requirements, the structure of high-rise building take more reliable, brick-concrete structure building only six layers of 19 meters the following, frame, frame shear structure will be used on top.The higher the shock, the stronger the shock.
      The main factors that determine the degree of damage caused by earthquake damage are the standard, structural design and construction quality.
      In the design of houses, and many structure was built in accordance with the building seismic need, therefore in decorate, some places are not altered, otherwise will damage the overall shock design of the building, when an earthquake is extremely dangerous.Especially the damage to the wall in the decoration, this is the dangerous practice.In general, if the first-floor residents will tear down large areas of the load-bearing walls, the building will likely collapse in the event of a magnitude eight earthquake.In addition, the load-bearing wall can't be gouged, which also damages the earthquake resistance of the house.
Practice has proved that after a good seismic design and construction of the house will get larger increase in seismic effect, this is why in the same neighborhood area after the earthquake, some house is seriously damaged, some are safe and sound.The main point of earthquake resistance is to reduce the earthquake force and improve the overall seismic capacity of the house.In case of case, when choosing a building, still should have one more heart, see the earthquake resistance capacity of the house.In general, six look:
      A look at the house where the environment: house in the surrounding environment of landform is to highlight the mouth, the towering bake, the rock slope, whether in the instability of the gully and landslide may occur, subsidence, collapse and dangerous rock tumbled, site of seismogenic fault, presence of paleochannel, within the scope of 15 meters under the surface have to liquefaction of saturated sandy soil and clay layer.Generally located in the above locations are more susceptible to earthquakes.Basic: generally speaking, deep foundation is better than shallow foundation;Raft foundation is better than strip foundation;The strip foundation is better than the single foundation;Caisson and integral basement are best;Look at the flat and facades of the house: look at the plane and the facade shape of the house, which is simple square, self-rearranged and symmetrical, or the shape is complicated, the stiffness changes much, the local prominence or the external contour twists and turns.Actually for earthquake proof, the more design simple, square is the house seismic ability the stronger.So choose a room should not too pursue the individuality of the area modelling.And for facades, buildings that seem to be top-heavy, such as those with smaller ones, tend to be less earthquake-resistant.4. Look at the room type: in the layout of the building, according to the household plan, whether it adopts a vertical wall bearing layout with poor seismic performance or a horizontal wall bearing or vertical wall bearing;5. Materials: reinforced concrete structures are much better than masonry structures.Material selection of those materials with ductility can be more earthquake-resistant than brittle materials;6. Indoor: to determine the strength of the wall, whether there are large cracks, whether there are obvious external flash, drum song, and whether there is a serious alkali erosion in the wall.
      After the yushu earthquake in qinghai province, the survey showed that the residential buildings in the area were mostly civil structures, and the earthquake resistance was poor and prone to collapse.But the number of deaths from collapsed buildings with no cement has been high, and the number of injuries has been high.
      The death toll from the 8.8 magnitude earthquake in Chile was just 452.The reason is that many residential buildings in the city of concepcion, Chile's second largest city, are steel and are earthquake-resistant.So although the population is densely populated, there are very few casualties.Japan is an earthquake-prone country with a 65% share of the steel structure in Japan.According to the data of Japan's hanshin earthquake, the damage rate of steel structure building in earthquake is much lower than that of concrete structure.Similarly, sichuan wenchuan earthquake, the same steel structure building mianyang gymnasium has not been damaged, and become the main site for the displaced people.The earthquake of yushu earthquake once again touched people's sensitive nerves, and it also highlighted the importance of energy-saving and earthquake-resistant steel structures in the future development of architecture.
      Earthquakes are frequent, causing people to pay more attention to "what building is the most earthquake-resistant".
      Existing building structural forms are mainly composite masonry structure, frame structure, frame shear wall structure, steel structure and the whole integral light steel structure and so on, no matter what kind of structure, as long as reasonable design, highly match the structure form, it should be a shock.However, compared with the same conditions, the main load-bearing materials of the masonry structure are brittle materials, the seismic performance is poor, and the frame structure is slightly better.And the frame shear wall, steel structure and the overall bearing light steel structure, the seismic performance is superior to the first two.
      The so-called "earthquake resistance factor" of the property is not standard.Main consideration in the design of structure seismic grade, the determination of aseismic levels associated with the category of buildings, buildings of different categories when considering seismic grade taking seismic intensity related to the building site categories, namely considering seismic grade access intensity and seismic fortification intensity is not necessarily the same calculation.The building structure should be divided into four categories: a, b, c, and d, according to the importance of its use function, and the general residence and office buildings are class c buildings.
      The earthquake resistance of the house and the family type also have relation, from the ability of earthquake resistance, the house of the flat layer is the best of earthquake resistance.The house of yue layer, double entry and the wrong stratum is dominant in the comfort and beauty of the residence, but to meet the same aseismatic standard of the same building, the measures to be taken will be more.From the design point of view, both high-level and multilayer, as long as strictly according to the standard, all can meet the seismic requirements, the structure of high-rise building take more reliable, brick-concrete structure building only six layers of 19 meters the following, frame, frame shear structure will be used on top.The higher the shock, the stronger the shock.
      The main factors that determine the degree of damage caused by earthquake damage are the standard, structural design and construction quality.
      In the design of houses, and many structure was built in accordance with the building seismic need, therefore in decorate, some places are not altered, otherwise will damage the overall shock design of the building, when an earthquake is extremely dangerous.Especially the damage to the wall in the decoration, this is the dangerous practice.In general, if the first-floor residents will tear down large areas of the load-bearing walls, the building will likely collapse in the event of a magnitude eight earthquake.In addition, the load-bearing wall can't be gouged, which also damages the earthquake resistance of the house.
      Practice has proved that after a good seismic design and construction of the house will get larger increase in seismic effect, this is why in the same neighborhood area after the earthquake, some house is seriously damaged, some are safe and sound.The main point of earthquake resistance is to reduce the earthquake force and improve the overall seismic capacity of the house.In case of case, when choosing a building, still should have one more heart, see the earthquake resistance capacity of the house.In general, six look:
      A look at the house where the environment: house in the surrounding environment of landform is to highlight the mouth, the towering bake, the rock slope, whether in the instability of the gully and landslide may occur, subsidence, collapse and dangerous rock tumbled, site of seismogenic fault, presence of paleochannel, within the scope of 15 meters under the surface have to liquefaction of saturated sandy soil and clay layer.Generally located in the above locations are more susceptible to earthquakes.Basic: generally speaking, deep foundation is better than shallow foundation;Raft foundation is better than strip foundation;The strip foundation is better than the single foundation;Caisson and integral basement are best;Look at the flat and facades of the house: look at the plane and the facade shape of the house, which is simple square, self-rearranged and symmetrical, or the shape is complicated, the stiffness changes much, the local prominence or the external contour twists and turns.Actually for earthquake proof, the more design simple, square is the house seismic ability the stronger.So choose a room should not too pursue the individuality of the area modelling.And for facades, buildings that seem to be top-heavy, such as those with smaller ones, tend to be less earthquake-resistant.4. Look at the room type: in the layout of the building, according to the household plan, whether it adopts a vertical wall bearing layout with poor seismic performance or a horizontal wall bearing or vertical wall bearing;5. Materials: reinforced concrete structures are much better than masonry structures.Material selection of those materials with ductility can be more earthquake-resistant than brittle materials;6. Indoor: to determine the strength of the wall, whether there are large cracks, whether there are obvious external flash, drum song, and whether there is a serious alkali erosion in the wall.