本文關(guān)鍵詞：波折腹板鋼梁柱弱軸方向半剛性連接節(jié)點性能研究　出處：《河北工程大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 波折腹板鋼梁 柱弱軸 半剛性連接 彎矩-轉(zhuǎn)角曲線 滯回性能

【摘要】：在高層、大跨結(jié)構(gòu)中,鋼結(jié)構(gòu)具有突出的優(yōu)越性。隨著梁高厚比的增大,腹板平面外剛度較小,易發(fā)生局部屈曲,波折腹板具有較大的平面外剛度,波折腹板梁抗剪屈曲承載力較大,有較好的經(jīng)濟(jì)效益及應(yīng)用前景。關(guān)于波折腹板鋼梁柱半剛性連接節(jié)點的研究主要集中于強(qiáng)軸方向,弱軸方向的研究并不多見。弱軸方向的連接是整個鋼框架節(jié)點的重要組成部分,其性能影響結(jié)構(gòu)的整體性能,在進(jìn)行空間框架的高等分析時,必須考慮弱軸方向的受力性能,因此有必要對弱軸方向的連接性能進(jìn)行研究。本文選用波折腹板鋼梁柱弱軸方向外伸端板半剛性連接,首先運用ANSYS軟件分別對邊柱及中柱節(jié)點在單向加載下進(jìn)行數(shù)值模擬,得到節(jié)點的彎矩-轉(zhuǎn)角曲線,分析節(jié)點的受力特性。通過調(diào)整波折腹板高度、波折腹板厚度、端板厚度、抗滑移系數(shù)及螺栓直徑等參數(shù),分析其對節(jié)點彎矩-轉(zhuǎn)角曲線的影響。研究邊柱及中柱節(jié)點在循環(huán)荷載下的滯回性能,得到滯回曲線,分析波折腹板高度、波折腹板厚度、端板厚度、抗滑移系數(shù)及螺栓直徑等參數(shù)對邊柱節(jié)點滯回性能的影響。通過分析得出:加載初期,邊柱及中柱節(jié)點BASE試件彎矩-轉(zhuǎn)角基本呈線性關(guān)系,當(dāng)彎矩增大到一定程度時,彎矩-轉(zhuǎn)角關(guān)系開始呈非線性變化,隨著彎矩的繼續(xù)增大,連接的剛度明顯降低,其后節(jié)點達(dá)到極限狀態(tài),連接宣告破壞。邊柱及中柱節(jié)點BASE模型的滯回環(huán)穩(wěn)定飽滿,呈梭形且耗能系數(shù)都大于2,抗震性能較好且中柱節(jié)點BASE模型耗能能力更好。隨著波折腹板高度、波折腹板厚度、端板厚度的增加,邊柱連接節(jié)點的極限彎矩逐漸增大,但耗能系數(shù)逐漸減小;隨著螺栓直徑的增加,邊柱連接節(jié)點的極限彎矩隨之增加,但耗能系數(shù)先增大后減小;抗滑移系數(shù)對邊柱節(jié)點的極限彎矩及耗能能力影響較小。
[Abstract]:In high-rise and long-span structures, steel structure has outstanding advantages. With the increase of beam height and thickness ratio, the external stiffness of web is smaller, local buckling is easy to occur, and the corrugated web has larger out-of-plane stiffness. The shear buckling capacity of the corrugated web beam is large and has good economic benefit and application prospect. The research on the semi-rigid connection joint of the corrugated web plate steel Liang Zhu is mainly focused on the direction of the strong axis. The connection of weak axis direction is an important part of the whole steel frame joint, and its performance affects the overall performance of the structure, in the advanced analysis of the spatial frame. The mechanical behavior of weak axis must be considered, so it is necessary to study the connection performance of weak axis. In this paper, the semi-rigid connection of extended end plate in the direction of weak axis of Liang Zhu corrugated web steel is selected. At first, ANSYS software is used to simulate the joints of side column and middle column respectively under unidirectional loading. The moment-angle curve of the joints is obtained, and the stress characteristics of the joints are analyzed. The height of the corrugated web is adjusted by adjusting the height of the corrugated web. The influence of the parameters such as the thickness of corrugated web plate, the thickness of end plate, the anti-slip coefficient and the diameter of bolt on the moment rotation curve of joints is analyzed. The hysteretic behavior of the joints of side column and middle column under cyclic load is studied. The hysteretic curve is obtained, and the effects of the height of the corrugated web, the thickness of the corrugated web, the thickness of the end plate, the slip resistance coefficient and the diameter of the bolt on the hysteretic performance of the edge column joints are analyzed. When the moment increases to a certain extent, the relationship between moment and rotation begins to be nonlinear, and increases with the increase of bending moment. 3. The relationship between moment and rotation angle of BASE specimen is linear, and when the moment increases to a certain extent, the relationship between moment and rotation angle begins to change nonlinearly, and increases with the increase of bending moment. The stiffness of the connection is obviously reduced, the joint reaches the limit state, and the connection is declared to be destroyed. The hysteretic loop of the BASE model of the side column and the middle column is stable and full, with fusiform shape and energy dissipation coefficient greater than 2. With the height of the corrugated web, the thickness of the corrugated web and the thickness of the end plate, the ultimate bending moment increases gradually. But the energy dissipation coefficient decreases gradually. With the increase of bolt diameter, the ultimate bending moment increases, but the energy dissipation coefficient increases first and then decreases. The slip resistance coefficient has little effect on the ultimate bending moment and energy dissipation capacity of the side column joints.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU391

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