| On the 14th morning, 7:49, Yushu County, Yushu Tibetan Autonomous Prefecture of Qinghai Province (latitude 33.1 degrees north,Czech soccer jerseys, longitude 96.7 degrees) occurred 7.1-magnitude earthquake. Cut-off at 2 o'clock on the 15th, has caused 589 deaths and 8,000 injuries, 15,000 houses collapsed. Press survey shows that more than Yushu area housing for the civil engineering structures, seismic capacity of poor and very easy to collapse in an earthquake. But no concrete structure housing more than the number of deaths caused by the collapse, people will be more injuries. Contrast, Chile on February 27 Richter 8.8 earthquake, which caused only 452 deaths. The reason is the second largest city of Concepcion city intelligence many residential buildings are steel, are strong earthquake. So even though densely populated, the casualties are few.
Here highlights the steel building construction in the future of human development in an important position and promote the need. China Steel Structure Association Deputy Secretary-General, Professor, Senior Engineer Liu Wanzhong was introduced, steel construction,AC Milan jerseys, whether in theory or from the structure is superior to other structural systems architecture. Wenchuan earthquake, the same stadium in Mianyang is a steel building has not been damaged, and become the main location with victims. "Reconstruction, schools, hospitals and other public facilities should be the main steel structure." Famous Chinese steel experts, the National Engineering Research Center for Steel chief engineer Hou Zhaoxin said,Bayern Munich jerseys, "As the disaster in the earthquake zone, the Government should advance planning and construction of public facilities to do large earthquakes do not fall. " "Disaster area housing most of the concrete building, and even many of brick and concrete structure." In his view, form different structures, seismic performance significantly different. Concrete structure housing pressure better,Juventus jerseys, but not tensile strength, the gap between two forces up to 10 times. When the earthquake came, housing in the case of seismic cyclic loading, easy to collapse the whole place. The steel has good ductility, seismic wave energy can be offset. "At least not cross-collapse structure, as long as the earthquake, the house does not fall, people can be saved." He said seismic performance of steel in addition to the high, short construction period, the high level of industrialization, Environmental protection And good performance was significantly better than the concrete structure, "steel structure should be the best choice for reconstruction." It is understood that Japan and other earthquake-prone areas in the steel construction 38%,France soccer jerseys, 35% wood, concrete structure only accounts for 20%, while China, in contrast, accounted for more than 90% of concrete, steel is not to 5%%. Steel expert admitted, compared to traditional concrete structures, steel costs to be higher than a number of really. However, construction steel than concrete 50% faster, this will save a lot of time and cost. And housing than the overall weight lighter than 50% of concrete structures, such basic treatment, the cost will decrease traffic. In addition, a small section of steel columns can be increased by 5%% of the space area. "Ideal situation will be balanced with the cost of concrete construction, the worst will not exceed 15%. This is acceptable to us." Seismic experts called for post-disaster reconstruction phase, the Government should Vigorously Promote steel construction, the relevant departments should establish this connection as soon as disaster demonstration projects. "Of course all the houses built for the steel structure is not realistic, but at least schools, hospitals and other public facilities should be used as criteria. Hot Recommendation: Watch 09 Hardware Ten selection The e-commerce company in China offers quality products such as , , and more. For more , please visit today!
|
没有评论:
发表评论