Teachers team of the Ministry of Engineering Construction Engineering have made new progress in the development of tough structural components

"Toughness" is the mainstream direction of the development of the world today. In 2017, the National Earthquake Science and Technology Innovation Project proposed a "tough urban and rural" scientific plan; "The Fourteenth Five -Year Planning of the National Economic and Social Development of the People's Republic of China and the Outline of the 2035 Vision Target" clearly proposed to build a "tough city"; the Global Engineering of the Chinese Academy of Engineering Institute The "Global Engineering Frontier" report in the cutting -edge project team in 2021 lists the "recovery functional shock resistance tough structural system" as the frontiers of TOP10 engineering research in civil, water conservancy and construction engineering.

Associate Professor Cui Yao in the Department of Construction Engineering In response to the structure of traditional reinforced concrete shear wall structures, Lianliang has innovatively developed a "frictional steel truss beam" in the unclear development of the beam under the earthquake, which is not easy to repair. The beam deformation concentration site is set to remove the removable friction device. The deformation capacity of the beam is determined by the slippery length of the friction device. By adjusting the layout of the beam truss and the removable friction device, the bearing capacity and rigidity decoupling design is achieved. The theoretical computing formula of frictional steel truss beam bearing capacity, rigidity and deformation was established, and the theoretical stagnation model and macro model suitable for earthquake analysis and design were developed. The path of frictional steel truss is clear, the stress is clear, the structure is simple, the structure has the advantages of damage, the recovery of the post-earthquake function, the strength-stiffness structure, and the separation of cutting. Structural components and systems provide new ideas and design theoretical basis, which has important scientific significance and engineering value for improving the disaster prevention and mitigation capabilities of my country's engineering structure.

The research thesis was published in the American Society of Civil Engineers (ASCE), the flagship period (JSE ", and was selected in September 2022 Editor's Choice. Associate Professor Cui Yao is the first author, doctoral student Tang Qi, and Wu Tianjiao, a master's degree, are the second and third authors of the paper.

ASCE-JSE is an internationally recognized authoritarian journal in the field of earthen engineering. It is also the top international journal and structural engineering TOP 1 journal certified by the Ministry of Engineering. Its influence factor in 2022 is 3.858, which is "engineering-civil engineering" and "engineering-construction and construction technology technology "Domain JCR-2 Journal. Editor's Choice Highlights is a promoter by Professor John W. Van de Lindt, editor -in -chief of the Journal of the Journal of the Journal of the Journal of the United States. In each article, an excellent papers with major scientific significance are recommended. And publicity and open public browsing for one month.

This paper is also the key technology and performance analysis key technology of the Ministry of Science and Technology's key R & D project "Optimized Design Theory and Performance Analysis of the Energy Energy Reducing Structure of Industrialized Building (2017YFC070360)" Mechanism and seismic performance research (51678106) ", and the stage results of the" Dut20JC05) of the "Data -driven Building Toughness Evaluation Method (DUT20JC05)".

The thesis link address: https://doi.org/10.1061/ (asce)st.1943-541x.0003420

News source: Dalian University of Technology News Network

Edit: Li Yixun

School pair: Li Xiaoyong

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