本文選題：冷彎不銹鋼 + 主方支圓�。� 參考：《合肥工業(yè)大學(xué)》2017年碩士論文

【摘要】：不銹鋼由于其造型美觀、耐腐蝕性和耐久性能好、易于維護(hù)和全生命周期成本低等優(yōu)點(diǎn),越來越多地應(yīng)用于建筑結(jié)構(gòu)中,尤其在一些關(guān)鍵結(jié)構(gòu)以及結(jié)構(gòu)的關(guān)鍵部位。鋼管相貫節(jié)點(diǎn)由于其受力性能較好、傳力路線明確和承載力較大等特點(diǎn)而使用廣泛。對于節(jié)點(diǎn)而言,主管為方管或矩形管、支管為圓管更符合結(jié)構(gòu)形式和力學(xué)性能的要求。綜合而言,不銹鋼主方支圓管節(jié)點(diǎn)有很廣泛的應(yīng)用前景。目前我國對不銹鋼主方支圓管節(jié)點(diǎn)尤其是K型節(jié)點(diǎn)的研究十分匱乏,這一定程度上阻礙了不銹鋼結(jié)構(gòu)在結(jié)構(gòu)工程中的應(yīng)用。本文參考了國內(nèi)外現(xiàn)有的有關(guān)鋼管節(jié)點(diǎn)的研究成果,對不銹鋼主方支圓K型管節(jié)點(diǎn)進(jìn)行了靜力試驗(yàn)研究,研究了其破壞模式和極限承載力,并以此為依據(jù)建立了準(zhǔn)確有效的ABAQUS有限元模型,對不銹鋼主方支圓K型管節(jié)點(diǎn)進(jìn)行了參數(shù)分析,研究了支管直徑與主管寬度比β、主管的寬厚比2γ、支主管厚度比τ以及搭接節(jié)點(diǎn)搭接率Ov對節(jié)點(diǎn)破壞模式和極限承載力的影響。另外,本文依據(jù)有限元模擬分析結(jié)果,對現(xiàn)有中國鋼結(jié)構(gòu)規(guī)范中給出的節(jié)點(diǎn)承載力計(jì)算公式進(jìn)行修正,得到了適用于本文中幾何參數(shù)范圍的不銹鋼主方支圓K型管節(jié)點(diǎn)極限承載力計(jì)算公式;該公式具有較高的精度,為今后不銹鋼主方支圓K型管節(jié)點(diǎn)的設(shè)計(jì)研究提供了一定的參考。
[Abstract]:Stainless steel is more and more used in building structures, especially in some key structures and key parts of the structure, because of its beautiful shape, good corrosion resistance and durability, easy maintenance and low cost of the whole life cycle. Steel pipe intersecting joints are widely used because of their good mechanical properties, clear transmission route and large bearing capacity. For joints, square tube or rectangular tube is in charge, and branch tube is circular pipe, which meets the requirements of structural form and mechanical properties. Generally speaking, stainless steel main-supported circular pipe joints have a wide range of application prospects. At present, the research on stainless steel main square branch circular pipe joints, especially K type joints, is very scarce, which to some extent hinders the application of stainless steel structure in structural engineering. In this paper, referring to the existing research results of steel pipe joints at home and abroad, the static test of stainless steel main square supported circular K-type joints is carried out, and the failure mode and ultimate bearing capacity of the joints are studied. Based on this, an accurate and effective ABAQUS finite element model is established, and the parameter analysis of stainless steel main square support K type pipe joints is carried out. The effects of diameter to width ratio 尾, width to thickness ratio 緯, thickness ratio 蟿 and overlay ratio Ov on the failure mode and ultimate bearing capacity of the joints are studied. In addition, based on the results of finite element simulation analysis, the formulas for calculating the bearing capacity of joints in the existing codes for steel structures in China are revised in this paper. A formula for calculating the ultimate bearing capacity of K-shaped pipe joints with stainless steel principal support circle is obtained, which is suitable for the geometric parameters in this paper, and the formula has a high accuracy. It provides a certain reference for the design and research of stainless steel main square-supported K-shaped pipe joints in the future.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU392.3

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