Huang Jiantao: The technique of shocking can fundamentally improve the earthquake resistance of the building

Huang Jiantao at work (second right) Huang Jiantao's picture of the picture

At 12:52 on September 5, a magnitude 6.8 earthquake occurred in Luding County, Ganzi Prefecture, Sichuan Province. As of 17:00 on the 11th, the earthquake had caused 93 people to be killed and 25 people lost contact. In addition to grief, the issue of earthquake resistance and earthquake prevention caused people to think.

The dean of the China Earthquake Administration · Shenzhen Disaster Prevention and Mitigation Technology Research Institute, and the executive deputy director of the China Disaster Defense Association, executive deputy director of the China Disaster Defense Association, was interviewed by a reporter from China News Service on the 13th to answer the questions related to earthquake resistance.

It is understood that the outstanding feature of this earthquake is that there are many geological disasters caused by earthquakes and extremely serious, causing a large number of personnel casualties, damage to house buildings and infrastructure, and interruption of roads, communications, water supply and power supply. According to the joint headquarters of the provincial and cities (states) counties (states) counties (states) counties in the "9 · 5" earthquake in Sichuan Province, as of 17:00 on the 11th, the Luding earthquake has killed 93 people. 38 people. There were 25 people lost contact, including 9 people in Luding County and 16 of Ashamine County. After investigation, the highest intensity of the earthquake -stricken area is currently IX degree (9 degrees).

"The Sichuan-Tibet area is at the junction of the Asia-Europe sector and the Indian Ocean sector. The earthquake is frequent. The earthquake is 6.8, causing a serious disaster. If a magnitude 7.0-8.0 earthquake occurs, the earthquake energy will increase by 10-40 times. It will be much more serious. "Huang Jiantao introduced that to resist earthquake and earthquake, the safety performance of the building itself is the top priority. The reduction of seismic technology can fundamentally improve the earthquake resistance of the building, which is currently the most effective seismic technology. Because of this, my country's "Regulations on Earthquake Management of Construction Engineering" stipulates that the "two districts and eight types of buildings" are forced to use the mining technology.

Huang Jiantao explained that the seismic technology is in general to isolate the building and the ground with a soft layer. During the earthquake, the soft layer deforms, and the 70%to 80%earthquake energy isolates to protect the safety of building earthquakes. It is said that the consumption device is set in the building, and the consumer energy consumers consumes 20%to 30%of the earthquake energy entered in the upper structure during the earthquake.

Huang Jiantao said that the reduction of seismic buildings in this earthquake still shows excellent seismic resistance. The excellent seismic resistance of seismic technology has been proven and verified from structural dynamics in terms of structural dynamics and seismic simulation vibration table experiments. The most persuasive is the actual test of the earthquake at home and abroad. For example, on March 11, 2011, a magnitude 9.0 earthquake in East Japan, the Wenchuan 8.0 earthquake on May 12, 2008, and the Ya'an 7.0 earthquake on April 20, 2013 ... The earthquake resistance performance that cannot be compared with traditional seismic buildings, especially the seismic buildings, are damaged.

Huang Jiantao believes that compared with traditional seismic techniques, earthquake reduction technology is a "integrated person": it has the advantages of safe, economic and environmental protection.

Among them, "safety" is the most important advantage of earthquake reduction technology. At the same time, it can also label the "dual protection" to reduce the seismic technology: not only protects the safety of the building structure, but also protects the safety of its subsidiaries (decoration, furniture, instruments, equipment, etc.).

Huang Jiantao introduced to reporters that for buildings in high -intensity areas or large -scale complex buildings, due to the use of shock reduction technology, the size of the upper section of the upper structure beams and columns is reduced, the amount of steel and concrete is reduced, and the cost of engineering may be saved. If a large earthquake occurs in the future, the reduction of earthquake buildings also saves the cost of reinforcement and reconstruction and reconstruction after the earthquake, as well as the cost of indoor equipment, items maintenance and replacement, etc., which has the long -term economic benefits of traditional seismic buildings.

"In short, building earthquake resistance must strictly control the quality, strictly implement the requirements of the" Regulations on the Management of Construction Engineering Earthquake "to ensure the safety of engineering earthquake resistance." Huang Jiantao emphasized that in addition to the use of earthquakes to improve the earthquake resistance of the building structure, reduce the earthquake Or the measures for vibration disasters are also: earthquake disaster risk census, monitoring, early warning, seismic safety areas evaluation, major construction engineering earthquake safety evaluation, structural health monitoring, live fault detection, etc.

Source: China News Network

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