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張    寧 ^{1 , 2}  ,  鈕    鵬³   ,  蔣航海^2 , 4

( 1 .  安徽省城建設計研究總院 ，安徽 合肥 230051 ;  2.  安徽建筑大學 ，安徽 合肥 230601 ; 3 . 沈陽大學 建筑工程學院 ，遼寧 沈陽 110044 ;  4.  安徽省招標集團 ，安徽 合肥 230051)

摘   要 ：遼寧省檔案館新館為省級重點建設工程，建筑平面布置較為復雜。根據(jù)該工程平面不規(guī)則及大懸 挑的特點，運用Midas/Gen 等有限元分析軟件進行數(shù)值模擬分析 。在分析過程中 ，用靜力等效風荷載來代替規(guī) 范給出的基本風壓，從靜力風荷載和地震荷載兩種角度來進行結構的抗震性能分析。根據(jù)計算結果 ，獲得在不 同工況和方案條件下懸挑結構同樓板、桁架桿件和關鍵節(jié)點之間受力、變形的聯(lián)系 。針對部分節(jié)點變形過大的問題，采取增設斜撐等方式 ，減小構件內(nèi)力，控制豎向變形，為類似不規(guī)則大懸挑結構的抗震設計提供優(yōu)化方 案和完善措施。

關鍵詞 ：不規(guī)則建筑 ；懸挑結構 ；數(shù)值模擬分析 ；抗震性能

中圖分類號 ：TU375 . 4           

文獻標志碼 ：A            

文章編號 ：1005- 8249  (2023)   03- 0002- 06

DOI : 10. 19860/j . cnki . issn1005- 8249. 2023 . 03 . 002

ZHANG Ning^{1 , 2}  ,   NIU Peng³ ,  JIANG Hanghai^2 , 4

( 1 . Anhui Urban Construction Design Insistute Corp ,   Hefei 230051 ,   China;

2. Anhui Jianzhu University ,   Hefei 230601 ,   China;

3 . Institute of Architectural Engineering ,   Shenyang University ,   Shenyang 110044 ,   China;

4. Anhui Tendering Group ,   Hefei 230051 ,   China  )

Abstract: The new Liaoning Provincial Archives is a provincial key construction project, and the building layout is relatively complex. According to the characteristics of irregular plane and large cantilever of the project, the finite element analysis software such as midas/gen is used for numerical simulation analysis. In the analysis process, the static equivalent wind load is used to replace the basic wind pressure given by the code, and the seismic performance of the structure is analyzed from the two aspects of static wind load and seismic load. According to the calculation results, the stress and deformation relations between the cantilever structure and the floor, truss members and key nodes under different working conditions and schemes are obtained. To solve the problem of excessive deformation of some joints, diagonal bracing is added to reduce the internal force of members and control the vertical deformation, so as to provide optimization schemes and improvement measures for the seismic design of similar irregular large cantilever structures.

 Keywords :  irregular building;   cantileverd structure ;   numerical simulation method analysis ;  seismic performance

 

作者簡介 ：張寧  ( 1994—) , 男，碩士，助理工程師 。研究方向 ：結構工程。

收稿日期 ：2022- 06-21