Abstract
In order to strengthen the understanding and the development trend of seismic design of bottom frame structure, the similarities and differences of some seismic design provisions of bottom frame structure between "78 Code", "89 Code", "01 Code" and "10 Code" were compared. From the aspects of floor number and total height limit, spacing between seismic transverse walls and seismic effect in terms of methods of bottom floor and so on, the causes of development and changes were described. And the effects on practical projects were explained. On the whole, the code for masonry building with bottom frame-seismic wall is more and more strict, the requirements are more specific, and the design is more and more conservative. The masonry building with bottom frame-seismic wall will still exist for a long time under the current level of economic development in China, and reasonable seismic design and construction measures should be given full attention.
Highlights
Since China promulgated the seismic design code TJ 11-78 in 1978, "Code for Seismic Design of Industrial and Civil Buildings"[1], the seismic design methods and seismic response theories in line with China's national conditions have been continuously developed
This paper compares with the development and changes of masonry building with bottom frame-seismic wall in the code from the following three aspects, in order to deeply understand the essence of the revision of the seismic code, to grasp the development trend of the relevant provisions in the code, and to analyze the causes of such changes and the impact on the structure of the project
Seismic design method of masonry building with bottom frame-seismic wall is first stipulated in the Code for Seismic Design of Buildings in 1978
Summary
Since China promulgated the seismic design code TJ 11-78 in 1978, "Code for Seismic Design of Industrial and Civil Buildings"[1] (hereinafter referred to as "78 Code"), the seismic design methods and seismic response theories in line with China's national conditions have been continuously developed. In the above four versions of seismic design codes, the "78 Code" and "89 Code" multi-storey masonry structure and masonry building with bottom frame-seismic wall are described separately.
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