加腋鋼框架結構的靜力彈塑性性能研究
發(fā)布時間：2018-11-27 18:04
【摘要】：美國北嶺和日本阪神地震后,為避免傳統(tǒng)鋼框架梁柱連接節(jié)點焊縫處過早的產(chǎn)生脆性破壞,人們提出了加強型和削弱型兩類新型鋼結構梁柱連接,它們的本質都是迫使塑性鉸出現(xiàn)遠離柱表面的梁上。本文中的加腋節(jié)點是加強型節(jié)點中的一種。國內只是單獨的對加腋型梁柱節(jié)點進行地震響應對比和內部應力狀態(tài)的研究,而對整個框架加腋后的力學性能研究較少。 本文運用SAP2000程序對普通鋼框架和對其進行加腋后的框架進行模態(tài)分析和Pushover分析。模態(tài)分析得出兩類鋼框架的周期。Pushover分析得出兩類鋼框架在多遇和罕遇地震作用下性能點的基底剪力和頂點位移,然后分別以第一次Pushover分析得到的頂點位移為監(jiān)測位移再進行Pushover分析,得到多遇和罕遇地震作用下兩類鋼框架的層位移、層間位移角和各桿件的塑性鉸數(shù)量及塑性鉸出現(xiàn)的順序。分析 結果表明： 加腋措施使得鋼框架在單位質量下的振型剛度發(fā)生變化,從而影響振型周期； 加腋措施使得鋼框架在多遇和罕遇地震下的層位移有減小的趨勢； 加腋措施使得鋼框架在多遇地震下的層間位移角減小的趨勢,而在罕遇地震下的層間位移角有增大的趨勢,但是這兩種影響的幅度不大； 加腋措施顯著改善了鋼框架在罕遇地震下結構桿件的塑性鉸數(shù)量和塑性鉸出現(xiàn)的順序,但是加腋后的首層柱底達到C階段,為薄弱構件,加腋設計時需要加強。
[Abstract]:In order to avoid premature brittle failure at the weld joint of the traditional steel frame Liang Zhu connection after the earthquake in North Ridge and Hanshin, Japan, two new types of strengthened and weakened steel structures Liang Zhu connection were proposed. Their essence is to force plastic hinges to appear on beams far from the surface of the column. The axillary node in this paper is one of the enhanced nodes. In China, the seismic response and internal stress state of Liang Zhu joints with axillary type are studied separately, but the mechanical properties of the whole frame after adding axillary are less studied. In this paper, the modal analysis and Pushover analysis of the ordinary steel frame and the post-axillary frame are carried out by using SAP2000 program. The period of two kinds of steel frames is obtained by modal analysis. Pushover analysis shows the base shear force and vertex displacement of the two kinds of steel frames under rare and rare earthquakes. Then, using the vertex displacement obtained from the first Pushover analysis as the monitoring displacement, the Pushover analysis is carried out, and the floor displacement, interstory displacement angle, the number of plastic hinges of each member and the order in which plastic hinges appear are obtained under the action of frequent and rare earthquakes. The results show that the vibration stiffness of steel frame under unit mass is changed by adding axillary measures, which affects the mode period. The addition of axillary measures makes the floor displacement of steel frame decrease under frequent and rare earthquakes. The addition of axillary measures makes the interstory displacement angle of the steel frame decrease under frequent earthquakes, while the interstory displacement angle increases under rare earthquakes, but the amplitude of these two kinds of effects is not significant. The addition of axil significantly improves the number of plastic hinges and the emergence order of plastic hinges in steel frames under rare earthquakes, but the bottom of the column with the first layer after the axil reaches the C stage, which is a weak member and needs to be strengthened in the design of axil.
【學位授予單位】：內蒙古工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU391;TU313
本文編號：2361619
[Abstract]:In order to avoid premature brittle failure at the weld joint of the traditional steel frame Liang Zhu connection after the earthquake in North Ridge and Hanshin, Japan, two new types of strengthened and weakened steel structures Liang Zhu connection were proposed. Their essence is to force plastic hinges to appear on beams far from the surface of the column. The axillary node in this paper is one of the enhanced nodes. In China, the seismic response and internal stress state of Liang Zhu joints with axillary type are studied separately, but the mechanical properties of the whole frame after adding axillary are less studied. In this paper, the modal analysis and Pushover analysis of the ordinary steel frame and the post-axillary frame are carried out by using SAP2000 program. The period of two kinds of steel frames is obtained by modal analysis. Pushover analysis shows the base shear force and vertex displacement of the two kinds of steel frames under rare and rare earthquakes. Then, using the vertex displacement obtained from the first Pushover analysis as the monitoring displacement, the Pushover analysis is carried out, and the floor displacement, interstory displacement angle, the number of plastic hinges of each member and the order in which plastic hinges appear are obtained under the action of frequent and rare earthquakes. The results show that the vibration stiffness of steel frame under unit mass is changed by adding axillary measures, which affects the mode period. The addition of axillary measures makes the floor displacement of steel frame decrease under frequent and rare earthquakes. The addition of axillary measures makes the interstory displacement angle of the steel frame decrease under frequent earthquakes, while the interstory displacement angle increases under rare earthquakes, but the amplitude of these two kinds of effects is not significant. The addition of axil significantly improves the number of plastic hinges and the emergence order of plastic hinges in steel frames under rare earthquakes, but the bottom of the column with the first layer after the axil reaches the C stage, which is a weak member and needs to be strengthened in the design of axil.
【學位授予單位】：內蒙古工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU391;TU313
【參考文獻】
相關期刊論文 前10條
1 ;江蘇昆山市綽墩遺址發(fā)掘報告[J];東南文化;2000年01期
2 周炳章;日本阪神地震的震害及教訓[J];工程抗震;1996年01期
3 郁有升;王燕;;鋼框架梁翼緣削弱型節(jié)點力學性能的試驗研究[J];工程力學;2009年02期
4 梁軍,黎永,曾常陽;鋼框架加腋梁-柱剛性節(jié)點的非線性分析[J];廣東土木與建筑;2003年12期
5 侯寶隆;國外幾種鋼結構連接新工法[J];鋼結構;2001年04期
6 姜麗云;王飛龍;張建平;;鋼框架梁柱加腋節(jié)點有限元分析[J];工業(yè)建筑;2008年S1期
7 姜麗云;劉國俊;劉滿想;;加腋節(jié)點在單向及循環(huán)荷載作用下的受力性能分析[J];工業(yè)建筑;2011年S1期
8 黃炳生;日本神戶地震中建筑鋼結構的震害及啟示[J];建筑結構;2000年09期
9 楊強躍,鄭悅;鋼框架梁柱節(jié)點連接方式的介紹與分析[J];建筑結構;2004年06期
10 武鋼;翟長海;姜麗云;;鋼框架加腋節(jié)點抗震性能分析[J];建筑結構學報;2010年S1期
，本文編號：2361619
本文鏈接：http://sikaile.net/kejilunwen/sgjslw/2361619.html
