發(fā)布時(shí)間：2018-05-18 02:21

  本文選題：鋼管混凝土柱 + H形鋼梁　； 參考：《建筑結(jié)構(gòu)學(xué)報(bào)》2016年01期

【摘要】：在傳統(tǒng)內(nèi)環(huán)板節(jié)點(diǎn)的基礎(chǔ)上,提出一種適用于大直徑鋼管混凝土柱的梁柱節(jié)點(diǎn)。為了避免內(nèi)環(huán)板寬度過(guò)大造成混凝土澆筑困難、用鋼量較大的問(wèn)題,在內(nèi)環(huán)板焊接拉結(jié)鋼筋,既可以減小鋼材用量又便于在鋼管柱內(nèi)設(shè)置鋼筋籠。為避免與鋼梁翼緣焊接處的鋼管表面發(fā)生層狀撕裂,局部加大梁端翼緣寬度,并通過(guò)分析合理確定梁端擴(kuò)翼寬度與擴(kuò)翼角度。采用非線性有限元軟件,對(duì)節(jié)點(diǎn)構(gòu)造與應(yīng)力分布、變形性能的關(guān)系進(jìn)行分析。通過(guò)對(duì)比分析得到梁端的剛域長(zhǎng)度,并對(duì)剛域長(zhǎng)度與框架梁抗彎剛度的關(guān)系進(jìn)行研究。為了驗(yàn)證該類(lèi)節(jié)點(diǎn)設(shè)計(jì)的合理性,進(jìn)行鋼管混凝土柱-H形鋼梁縮尺模型試驗(yàn)。有限元分析與縮尺模型試驗(yàn)結(jié)果表明,節(jié)點(diǎn)拉結(jié)鋼筋可以提高內(nèi)環(huán)板傳力的有效性,有效減小節(jié)點(diǎn)區(qū)柱壁應(yīng)力,當(dāng)梁端擴(kuò)翼寬度為1.5倍梁翼緣寬度、擴(kuò)翼角度為1∶6時(shí),節(jié)點(diǎn)區(qū)柱壁應(yīng)力明顯低于H形鋼梁的應(yīng)力,滿足"強(qiáng)節(jié)點(diǎn)弱構(gòu)件"的抗震設(shè)計(jì)理念。節(jié)點(diǎn)剛度對(duì)鋼管混凝土柱-H形鋼梁框架結(jié)構(gòu)的側(cè)向剛度影響顯著,當(dāng)梁端剛域長(zhǎng)度約為鋼柱直徑的0.4倍時(shí),框架梁的抗彎剛度可增加40%以上。節(jié)點(diǎn)抗震性能良好,可以實(shí)現(xiàn)"強(qiáng)節(jié)點(diǎn)弱構(gòu)件"的抗震設(shè)計(jì)理念。
[Abstract]:Based on the traditional inner annular plate joints, a new Liang Zhu joint for large diameter concrete-filled steel tubular columns is proposed. In order to avoid the difficulty of concrete pouring caused by too large width of inner ring plate, the steel bar is welded in the inner ring plate, which can not only reduce the amount of steel but also facilitate the installation of steel cage in steel pipe column. In order to avoid the lamellar tearing on the steel tube surface where the steel flange is welded with the steel beam flange, the width of the flange at the end of the beam is increased locally, and the width and angle of the expanded wing at the end of the beam are reasonably determined through analysis. The nonlinear finite element software is used to analyze the relationship between joint structure and stress distribution and deformation performance. The length of the rigid domain at the end of the beam is obtained by comparative analysis, and the relationship between the length of the rigid domain and the bending stiffness of the frame beam is studied. In order to verify the rationality of the design of this kind of joint, the scale model test of concrete-filled steel tubular column-H-shaped steel beam was carried out. The results of finite element analysis and scale model test show that the joint tension bar can improve the effectiveness of the internal ring plate transmission force, and effectively reduce the stress of column wall in the joint zone. When the width of the expanded wing at the end of the beam is 1.5 times the width of the flange of the beam and the angle of the expanded wing is 1:6, The stress of column wall in joint area is obviously lower than that of H-shaped steel beam, which satisfies the seismic design idea of "strong joint and weak member". The joint stiffness has a significant effect on the lateral stiffness of concrete-filled steel tubular column (CFST) -H-shaped steel beam frame structure. When the length of the rigid zone of the beam is about 0.4 times of the diameter of the steel column, the flexural stiffness of the frame beam can be increased by more than 40%. The seismic performance of joints is good, and the seismic design idea of "strong joints and weak members" can be realized.
【作者單位】： 中國(guó)建筑設(shè)計(jì)研究院;北京工業(yè)大學(xué)抗震與結(jié)構(gòu)診治北京市重點(diǎn)實(shí)驗(yàn)室;陽(yáng)光保險(xiǎn)集團(tuán)股份有限公司;
【基金】：中國(guó)建設(shè)科技集團(tuán)股份有限公司科技創(chuàng)新基金項(xiàng)目(Z2014J09)
【分類(lèi)號(hào)】：TU398.9

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陸長(zhǎng)庚;;超級(jí)高強(qiáng)度混凝土柱[J];建筑知識(shí);1988年05期

2 劉愛(ài)忠;;混凝土柱�？ň叩母倪M(jìn)[J];建筑工人;1998年03期

3 翟海寧;關(guān)于清水混凝土柱的施工要求[J];小城鎮(zhèn)建設(shè);1999年03期

4 徐德新,劉小明,楊勇華,侯發(fā)亮,孟吉復(fù),褚江濤,余震;爆裂混凝土柱的試驗(yàn)分析[J];工業(yè)建筑;2001年05期

5 周越洲,吳敬偉;鋼管混凝土柱與普通混凝土柱的經(jīng)濟(jì)性比較[J];廣東土木與建筑;2004年03期

6 肖巖,何文輝,毛小勇;約束鋼管混凝土柱的開(kāi)發(fā)研究(英文)[J];建筑結(jié)構(gòu)學(xué)報(bào);2004年06期

7 劉萬(wàn)鋒;混凝土柱的破壞及原因分析[J];建筑安全;2005年10期

8 ;混凝土柱上加鋼梁的相關(guān)問(wèn)題探討[J];工業(yè)建筑;2006年11期

9 李哲;;鋼管混凝土柱在高層建筑中的應(yīng)用[J];福建建材;2007年02期

10 周海娜;申可可;;淺談某工程鋼管混凝土柱施工[J];建材與裝飾(中旬刊);2007年09期

相關(guān)會(huì)議論文 前10條

1 蔡文博;灻玉麟;_5智m，

本文編號(hào)：1903950