Source: China architecture standards design and Research Institute
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The low friction coefficient friction pendulum bearing is the core patent research achievement of the Standards Institute for many years
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The training building of Dangchang vocational secondary vocational school is designed and contracted by China building standards design and Research Institute Co., Ltd
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At present, a series of seismic isolation products are developed, including isolation bearings, damping energy dissipation devices, isolation flexible pipe connection, isolation fireproof board and isolation joint plugging products
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The training building of Dangchang vocational secondary school, which is only 10 kilometers away from the epicenter of the earthquake, was in training class on the sixth floor of the top floor at the time of the earthquake
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According to the official determination of China seismic network, at 20:46 on December 28, 2020, a magnitude 3.9 earthquake occurred in Dangchang County, Longnan City, Gansu Province, with the focal depth of 13 km and the epicenter at 33.83 N and 104.45 E
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(hereinafter referred to as “Standard Institute”) under the central enterprise China Construction Technology Group
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According to the quick report catalogue of China seismic station network, 97 earthquakes of magnitude 3 or above occurred within 200 km around the epicenter in recent five years
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On Weibo, Gansu netizens said that the earthquake was obvious and strong
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The training building of Dangchang vocational secondary school, which is only 10 kilometers away from the epicenter of the earthquake, adopts the friction pendulum isolation device independently developed by China architectural standards design and Research Institute Co., Ltd., which shows good adaptability in the earthquake, shows the superiority of isolation technology and products, ensures the safety of people’s lives and property, and highlights the high social stability of central enterprises and construction units Responsibility
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It is the first building in China to adopt ultra-low friction coefficient friction pendulum isolation device, and its biggest secret is that the foundation of the building is different
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With the implementation of the national standard “building isolation friction pendulum bearing”, the friction pendulum bearing has the advantages of large bearing capacity, large deformation, no damage, stability and reliability compared with the traditional rubber bearing, which attracts the attention and recognition of the isolation industry
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In order to further improve the seismic performance of construction projects, reduce the risk of earthquake disasters, and ensure the safety of people’s lives and property, the Ministry of housing and urban rural development drafted the “Regulations on seismic management of construction projects (Draft)”, which stipulates: newly built schools, kindergartens, hospitals, elderly care institutions, emergency command centers, emergency response centers located in high intensity fortification areas and key earthquake monitoring and defense areas Public buildings such as emergency shelters shall adopt shock isolation technology to ensure that they will not lose their building functions in case of earthquake
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The damping effect of the bearing is at least 30% higher than that of the ordinary friction coefficient bearing
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Gansu Province is an area with high earthquake incidence and intensity in China
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The provincial government requires that the school teaching buildings, student dormitories, hospital and medical rooms, kindergartens and other densely populated public buildings in the areas with seismic fortification intensity of 8 and above in Gansu Province should adopt base isolation technology
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Adhere to the people first and life first, put the protection of people’s life safety in the first place, comprehensively improve the ability of public security guarantee, improve the standards of flood and drought, forest and grassland fire, geological disasters, earthquakes and other natural disaster prevention projects, and improve the ability of disaster prevention, reduction, resistance and relief
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According to the feedback from the owner, it has achieved the expected effect
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Dangchang county is located in Longnan City, Gansu Province, which belongs to the high earthquake intensity area
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The earthquake caused a heated discussion among netizens
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Since the 2008 Wenchuan earthquake, the National Standards Institute has been established by the National Bureau of survey and research Led by Yu Yinquan, the design master, he has been continuously committed to the research of building vibration reduction and isolation technology, promoting the research and development of building vibration reduction and isolation products, and enjoys a high reputation in the industry
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We will carefully collect relevant data to provide support and service for the subsequent projects.” Since the 18th National Congress of the Communist Party of China, the Party Central Committee has insisted on protecting people’s lives, comprehensively improving the public security capability, and improving the standards of geological disasters, earthquakes and other natural disaster prevention projects
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According to teachers and students, the earthquake was slightly felt and the swing was not obvious
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Seismic isolation technology introduction seismic isolation technology is a new technology that can effectively reduce the seismic effect, that is, adding isolation bearings in the traditional seismic structure to consume seismic energy and reduce the impact of earthquake on buildings
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The working principle of seismic isolation technology can be seen in the figure below
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The excellent performance of the training building of Dangchang vocational secondary school in this earthquake has once again verified the seismic superiority and safety reliability of the isolation technology in the earthquake; at the same time, it has also verified the reliability of the building friction pendulum isolation bearing products independently developed by the Standards Institute It further demonstrates the responsibility and mission of the Standards Institute as a central enterprise “all people-centered”
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In general, the whole building is connected with the foundation as a whole; in the construction process of the above training building, the upper building is separated from the foundation, and the friction pendulum isolation bearing is installed in the middle
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Due to the remarkable seismic performance of the isolation technology, which has been tested in many earthquakes, the state is introducing policies to vigorously promote the isolation technology
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The “proposal of the CPC Central Committee on formulating the 14th five year plan for national economic and social development and the long-term goals for the year 2035” adopted at the Fifth Plenary Session of the 19th CPC Central Committee clearly requires: to ensure the safety of people’s lives
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Some of the pictures in this article are from the Internet, and the copyright belongs to the original author and source.
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As a science and technology-based central enterprise affiliated to China Construction Technology Group Co., Ltd., the standards institute actively practices the national strategy, undertakes the mission of “promoting technological progress and achieving the architectural dream”, relies on its strong technical strength and talent advantages, adheres to the spirit of “all high standards”, and takes “excellent century enterprise” as its vision
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The largest earthquake was the 7.0 earthquake (91 km away from the epicenter) in Jiuzhaigou County, Aba Prefecture, Sichuan Province on August 8, 2017
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After the earthquake, why did the school interview the teachers and students who experienced the same earthquake and felt the strong earthquake when they were on the ground, but they could not feel the earthquake when they were on the top of the building and should have experienced the “amplification” effect? What’s the secret in this school training building? It turns out that this training building looks like an ordinary building, but it is not simple
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Location of the epicenter of the earthquake according to local reporters, the earthquake was felt in Dangchang County of Longnan City and Zhouqu County of Gannan Prefecture, which is closer to the epicenter
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It is these isolation bearings that not only bear the vertical load of the building, but also isolate the energy transmitted by the earthquake to the upper building through horizontal sliding deformation, greatly reducing the impact of the earthquake, thus making the people in the building feel little or no sense of the earthquake
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In order to implement the spirit of the central government to ensure the safety of people’s lives, the Standards Institute applied the new technology and new technology products of building friction pendulum isolation bearings independently developed in the construction of the training building of Dangchang vocational secondary school, and the project passed the acceptance at the end of November 2019
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The training building of Dangchang vocational secondary school in this earthquake used the ultra-low friction coefficient friction pendulum isolation bearing independently developed by the Standards Institute, which was the first engineering application in China
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In the earthquake, the new technology product showed good adaptability, which not only achieved the important mission of protecting people’s lives, but also reflected the social responsibility of central enterprises to serve people’s livelihood through scientific and technological innovation
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According to the official determination of China seismic network, at 20:46 on December 28, 2020, a magnitude 3.9 earthquake occurred in Dangchang County, Longnan City, Gansu Province, with the focal depth of 13 km and the epicenter at 33.83 N and 104.45 E
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Meanwhile, the Standard Institute of cbs-fpsii, which is independently developed by the Institute, is provided Deng Jiong, director of the Institute of technology, said: “this is the first time that the friction pendulum isolation device independently developed by the Institute of standards has accepted the actual test of the earthquake
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