Engineering Mechanics ›› 2019, Vol. 36 ›› Issue (1): 183-191,215.doi: 10.6052/j.issn.1000-4750.2017.11.0853

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INFLUENCE OF CHANGING SHEAR ADJUSTMENT STRATEGY ON ASEISMIC PERFORMANCE OF FRAME-CORE TUBE STRUCTURE

LU Xin-zheng1, GU Dong-lian1, ZHOU Jian-long2,3, BAO Lian-jin2,3, QIAN Peng2,3, LU Xiao4, LIN Yuan-qing5   

  1. 1. Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China;
    2. East China Architectural Design & Research Institute, Shanghai 200002, China;
    3. Shanghai Engineering Research Center of Super High-Rise Building Design, Shanghai 200002, China;
    4. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;
    5. China Nuclear Power Engineering Co., Ltd., Zhengzhou Branch, Zhengzhou 450052, China
  • Received:2017-11-13 Revised:2018-08-03 Online:2019-01-29 Published:2019-01-10

Abstract: The frame-core-tube structural system is one of the common structural systems used in supertall buildings. While a shear adjustment regulation for the frame of a frame-core tube structure has been specified in related Chinese codes, its applicability in supertall buildings needs to be further studied. Similar regulations in the codes of China and the United States are compared in this work. Furthermore, based on an actual supertall building, a new design is proposed by changing the shear adjustment strategy. Then the refined finite element (FE) models of both original design and new one are established. And both nonlinear time history analysis (THA) under the maximum considered earthquake (MCE) and earthquake-induced collapse analysis are performed for these two models. The results indicate that:compared with the original design, the new one, whose shear adjustment strategy is different, has a lower design difficulty, a similar aseismic performance under MCE, and a higher anti-collapse resistance. The results can provide a reference for the design of supertall frame-core tube structures.

Key words: supertall building, frame-core tube structure, shear adjustment, earthquake, collapse

CLC Number: 

  • TU973+.17
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