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Fillers for epoxy floor paint wear a great impact

[ 2011-12-05 ]

Earthquake for the construction and urban roads, bridges, tunnels, sounded the alarm. What kind of construction can earthquake? How earthquake-proof building design? Guangzhou Metro how to use the seismic design? ... ... Please listen to the industry's leading experts eleven doubts.

Sichuan earthquake on housing, roads, etc., causing a large area of damage, especially in areas of Mianyang, Beichuan region, housing quake. What kind of house to earthquake? How in the architectural design earthquake? Guangdong seismic capabilities? With these questions, the reporter interviewed the Guangdong Provincial Architectural Design Institute, deputy chief engineer, a registered structural engineer Li Zhen Zhang.

Most buildings have seismic capacity of Guangdong

Li Zhen Zhang said that in the earthquake in Chengdu, housing damage is not serious. Day after the quake, he and Yung Park Academy students call to Chengdu, Chengdu, learned the building, road damage is not serious. "30 years of seismic design is still very successful." Zhang Zhen Li said that since the Tangshan earthquake, China issued a seismic earthquake design standards. According to the standard, Guangzhou seismic shock level is 7 degrees, with the hardest-hit areas of Mianyang, the same level of seismic shock. Shantou in Guangdong Province, Chao, Xuwen, Chaozhou, South Australia, Chenghai, etc., compared with the seismic shock level of 8 degrees.

For the construction of the seismic situation, Guangdong Province, Li Zhen Zhang said, the big cities, the seismic design and implementation are very satisfactory. In architectural design, seismic requirements are very strict, if not for seismic design, construction plan review can not pass through. In the design, not earthquake-proof design and submit the review, is illegal. For this, there are clearly defined. In the structure of the review, the most important is to check the earthquake.

Specific to Guangzhou, as long as the house built after 1976, the basic requirements are earthquake-proof, but also the implementation of the relevant design standards. Old house for renovation and addition, the seismic design requirements generally. Some did not reform and rehabilitation of old houses in the earthquake area is the existence of loopholes.

Guangzhou buildings, generally in accordance with 7 degree earthquake to design, but some of the major buildings, such as Baiyun International Airport, railway station, the new tower, large hospitals, etc., for the earthquake will be increased by one level --- 8 degrees.

But do not rule out in some small place, there are some items there is no project approval, and still cover up the housing situation, these are some hidden dangers.

Do not chase peculiar shape of the architectural design

Li Zhen Zhang pointed out that the earthquake also sounded the alarm, to attach great importance to building earthquake-proof. He stressed that in the design, not to pursue strange novel, rather than on the structure is reasonable. Those are too many overhanging, flat asymmetric buildings is not conducive to seismic design. Conversion layer that more pillars do not fall to the ground floor in a converted so some of the practices, but also not conducive to the earthquake.

In addition, too much too fine a house, building aspect ratio is too large, heavy materials, such as not conducive to the earthquake. In the current building, the CCTV building's unique shape and a new site in Guangzhou new TV tower's unique shape is not conducive to earthquake.

Li Zhen Zhang pointed out that during the design, we should pay more attention to the symmetry plane for the anti-ground horizontal force components to the construction of high-aspect ratio to be as reasonable as possible, the difference is not too big, so that it can help earthquake-proof.

Proposed high-rise building with steel

In materials, try to choose light materials. Disable the clay brick, sand lime brick firm can not use. "I advocate more use of steel." Li Zhen Zhang said, because the better ductility of steel structures, the earthquake is very favorable.

Many large-span steel buildings are used, Guangzhou New TV Tower, Pearl River New Town West Tower and some other large public buildings, etc. are basically steel construction. The steel used in high-rise buildings than less. Li Zhen Zhang believes that although the cost of expensive steel structure design, but the steel construction of the columns than the small concrete building, the use of an area will be more appropriate. Moreover, the steel construction speed, improve efficiency.

He stressed that the earthquake for you architects, structural engineers and government officials sounded the alarm, to enhance seismic design must be taken seriously enough.

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