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

【摘要】：板柱結(jié)構(gòu)具有降低結(jié)構(gòu)層高、施工方便、提高經(jīng)濟(jì)效益等優(yōu)點(diǎn),但由于節(jié)點(diǎn)區(qū)域在承受重力荷載和水平荷載時(shí)易發(fā)生脆性破壞,板柱節(jié)點(diǎn)的沖切問(wèn)題和抗震性能一直是國(guó)內(nèi)外諸多學(xué)者不斷研究的重點(diǎn)。鋼管混凝土柱可以提高構(gòu)件的承載力,改善結(jié)構(gòu)的延性和韌性,在水平荷載反復(fù)作用下表現(xiàn)出更好的耗能能力,保證結(jié)構(gòu)在地震作用下具有良好的抗震性能。為了將板柱結(jié)構(gòu)和鋼管混凝土兩者的優(yōu)點(diǎn)結(jié)合起來(lái),本文研究了型鋼剪力架這種連接方式,對(duì)節(jié)點(diǎn)抗沖切性能和延性進(jìn)行改善。采用有限元分析對(duì)型鋼剪力架作用機(jī)理進(jìn)行分析研究,對(duì)型鋼剪力架不同參數(shù)對(duì)板柱節(jié)點(diǎn)性能的影響進(jìn)行分類研究,通過(guò)計(jì)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(diǎn)抗沖切計(jì)算公式。本文首先對(duì)板柱節(jié)點(diǎn)的破壞形態(tài)做了分析總結(jié),闡述了節(jié)點(diǎn)的沖切破壞時(shí)的作用機(jī)理,并提出了型鋼剪力架作為提高板柱節(jié)點(diǎn)沖切性能的可行性,對(duì)比分析了不同的沖切計(jì)算理論和在水平荷載作用下的計(jì)算方法。接著,簡(jiǎn)單介紹了有限元分析程序和材料本構(gòu),通過(guò)對(duì)比國(guó)外現(xiàn)場(chǎng)試驗(yàn)結(jié)果,說(shuō)明采用型鋼剪力架可以有效提高板柱節(jié)點(diǎn)的抗沖切承載力,同時(shí)驗(yàn)證了采用有限元模擬的可靠性。然后,重點(diǎn)對(duì)承受重力荷載作用下的內(nèi)置型鋼剪力架板柱節(jié)點(diǎn)進(jìn)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(zhuǎn)變?yōu)閺澢茐?隨著剪力架長(zhǎng)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(zhǎng)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(jì)算結(jié)果,在我國(guó)混凝土規(guī)范的基礎(chǔ)上,綜合考慮型鋼剪力架長(zhǎng)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(diǎn)的抗沖切承載力計(jì)算公式。最后,對(duì)板柱節(jié)點(diǎn)的抗震性能做了定性評(píng)估,對(duì)型鋼剪力架進(jìn)行不同參數(shù)分析,說(shuō)明采用鋼管混凝土柱可以有效提高板柱結(jié)構(gòu)的抗側(cè)能力,但型鋼剪力架的長(zhǎng)度和高度在超過(guò)一定程度后將影響節(jié)點(diǎn)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(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TU398.9

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

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

2 聶建國(guó);王宇航;;ABAQUS中混凝土本構(gòu)模型用于模擬結(jié)構(gòu)靜力行為的比較研究[J];工程力學(xué);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(xué);2011年08期

4 任達(dá);劉堅(jiān);焦楚杰;;源于縱筋面混凝土劈裂的無(wú)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(diǎn)性能試驗(yàn)研究[J];建筑結(jié)構(gòu)學(xué)報(bào);2009年S2期

6 張正雨;;抗彎縱筋對(duì)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(diǎn)抗沖切性能[J];自然災(zāi)害學(xué)報(bào);2008年04期

8 楊勇,趙鴻鐵,薛建陽(yáng),郭子雄;型鋼混凝土基準(zhǔn)粘結(jié)滑移本構(gòu)關(guān)系試驗(yàn)研究[J];西安建筑科技大學(xué)學(xué)報(bào)(自然科學(xué)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(jié)構(gòu)中柱節(jié)點(diǎn)抗震性能試驗(yàn)研究[J];華南理工大學(xué)學(xué)報(bào)(自然科學(xué)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(xué)性能試驗(yàn)研究[J];低溫建筑技術(shù);2003年06期

相關(guān)博士學(xué)位論文 前2條

1 劉立渠;鋼筋混凝土板考慮加載面積邊長(zhǎng)比及縱筋影響的抗沖切試驗(yàn)研究[D];中國(guó)建筑科學(xué)研究院;2006年

2 劉文s，

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