本文選題：鋼管混凝土 + 板柱節(jié)點　； 參考：《重慶大學》2016年碩士論文

【摘要】：板柱結構具有降低結構層高、施工方便、提高經(jīng)濟效益等優(yōu)點,但由于節(jié)點區(qū)域在承受重力荷載和水平荷載時易發(fā)生脆性破壞,板柱節(jié)點的沖切問題和抗震性能一直是國內(nèi)外諸多學者不斷研究的重點。鋼管混凝土柱可以提高構件的承載力,改善結構的延性和韌性,在水平荷載反復作用下表現(xiàn)出更好的耗能能力,保證結構在地震作用下具有良好的抗震性能。為了將板柱結構和鋼管混凝土兩者的優(yōu)點結合起來,本文研究了型鋼剪力架這種連接方式,對節(jié)點抗沖切性能和延性進行改善。采用有限元分析對型鋼剪力架作用機理進行分析研究,對型鋼剪力架不同參數(shù)對板柱節(jié)點性能的影響進行分類研究,通過計算數(shù)據(jù)擬合得到內(nèi)置型鋼剪力架方鋼管混凝土板柱節(jié)點抗沖切計算公式。本文首先對板柱節(jié)點的破壞形態(tài)做了分析總結,闡述了節(jié)點的沖切破壞時的作用機理,并提出了型鋼剪力架作為提高板柱節(jié)點沖切性能的可行性,對比分析了不同的沖切計算理論和在水平荷載作用下的計算方法。接著,簡單介紹了有限元分析程序和材料本構,通過對比國外現(xiàn)場試驗結果,說明采用型鋼剪力架可以有效提高板柱節(jié)點的抗沖切承載力,同時驗證了采用有限元模擬的可靠性。然后,重點對承受重力荷載作用下的內(nèi)置型鋼剪力架板柱節(jié)點進行沖切性能研究,加入型鋼剪力架后,板的抗沖切能力大幅提高,延性也隨之改善,破壞形式從沖切破壞轉變?yōu)閺澢茐?隨著剪力架長度和腹板面積增大,沖切承載力隨之提高,建議型鋼剪力架長度不宜小于02(b?2h),型鋼剪力架高度為0h2。根據(jù)75組抗沖切計算結果,在我國混凝土規(guī)范的基礎上,綜合考慮型鋼剪力架長度、腹板面積和板厚的影響,擬合得到內(nèi)置型鋼剪力架方鋼管混凝土板柱節(jié)點的抗沖切承載力計算公式。最后,對板柱節(jié)點的抗震性能做了定性評估,對型鋼剪力架進行不同參數(shù)分析,說明采用鋼管混凝土柱可以有效提高板柱結構的抗側能力,但型鋼剪力架的長度和高度在超過一定程度后將影響節(jié)點延性。
[Abstract]:The slab-column structure has the advantages of reducing the height of the structure, convenient construction and increasing economic benefit. However, the brittle failure is easy to occur in the joint area when it is subjected to gravity load and horizontal load. The punching shear problem and seismic behavior of slab-column joints have been the focus of many scholars at home and abroad. Concrete-filled steel tubular columns can increase the bearing capacity of members, improve the ductility and toughness of the structure, show better energy dissipation capacity under repeated horizontal loads, and ensure that the structure has good seismic performance under earthquake. In order to combine the advantages of slab-column structure and concrete-filled steel tube (CFST), this paper studies the connection mode of SSS, and improves the impact shear behavior and ductility of joints. The finite element analysis is used to analyze the mechanism of section steel shear frame, and the influence of different parameters of profile steel shear frame on the performance of plate column joint is classified. By fitting the calculated data, a formula for calculating the punching shear of concrete filled square steel tubular slab-column joints with built-in steel shear frame is obtained. In this paper, the failure pattern of slab-column joint is analyzed and summarized, and the mechanism of punching failure is expounded, and the feasibility of improving punching performance of slab-column joint by steel shear frame is put forward. Different punching calculation theories and calculation methods under horizontal load are compared and analyzed. Then, the finite element analysis program and material constitutive model are briefly introduced. By comparing the results of field tests abroad, it is proved that the punching shear capacity of slab-column joints can be improved effectively by using the steel shear frame. At the same time, the reliability of finite element simulation is verified. Then, the punching behavior of the slab-column joints of the built-in steel shear frame subjected to gravity load is studied. The punching ability of the plate is greatly improved and the ductility is improved with the addition of the steel shear frame. With the increase of shear frame length and web area, the punching capacity increases. It is suggested that the length of section steel shear frame should not be less than 02mb / h and the height of section steel shearframe should be 0h2.The failure mode is changed from punching failure to bending failure, and the punching capacity increases with the increase of shear frame length and web area. According to the calculation results of 75 groups of punching shear, on the basis of the concrete code of our country, the influence of length, web area and thickness of steel shear frame is considered synthetically. The formula for calculating the punching shear capacity of concrete filled square steel tubular slab-column joints with built-in steel shear frame is obtained by fitting. Finally, the seismic behavior of slab-column joints is evaluated qualitatively, and the different parameters of steel shear frame are analyzed. The results show that concrete filled steel tubular columns can effectively improve the lateral resistance of slab-column structures. However, the ductility of the joints will be affected by the length and height of the steel shear frame.
【學位授予單位】：重慶大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TU398.9

【參考文獻】

相關期刊論文 前10條

1 王建平;丁慧;宋力;;抗沖切元件對板柱節(jié)點受力性能的影響[J];水利與建筑工程學報;2015年03期

2 聶建國;王宇航;;ABAQUS中混凝土本構模型用于模擬結構靜力行為的比較研究[J];工程力學;2013年04期

3 龍渝川;李正良;;模擬混凝土滯回行為的各向異性損傷模型[J];工程力學;2011年08期

4 任達;劉堅;焦楚杰;;源于縱筋面混凝土劈裂的無腹筋板沖切模型[J];土木建筑與環(huán)境工程;2011年02期

5 張玉敏;陳靜;孫翠娟;蘇幼坡;蘇經(jīng)宇;;異形鋼管混凝土柱-板鉸接節(jié)點性能試驗研究[J];建筑結構學報;2009年S2期

6 張正雨;;抗彎縱筋對混凝土板沖切承載力的影響[J];工業(yè)建筑;2009年S1期

7 劉英利;耿立功;王海霞;徐曉彬;蘇幼坡;;鉸支撐鋼管混凝土板柱節(jié)點抗沖切性能[J];自然災害學報;2008年04期

8 楊勇,趙鴻鐵,薛建陽,郭子雄;型鋼混凝土基準粘結滑移本構關系試驗研究[J];西安建筑科技大學學報(自然科學版);2005年04期

9 林凡;蔡健;劉付鈞;吳源青;;新型鋼管混凝土板柱結構中柱節(jié)點抗震性能試驗研究[J];華南理工大學學報(自然科學版);2005年11期

10 張格明,王英,鄭文忠;焊接成型型鋼剪力架力學性能試驗研究[J];低溫建筑技術;2003年06期

相關博士學位論文 前2條

1 劉立渠;鋼筋混凝土板考慮加載面積邊長比及縱筋影響的抗沖切試驗研究[D];中國建筑科學研究院;2006年

2 劉文s，

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