本文關(guān)鍵詞：倉(cāng)儲(chǔ)結(jié)構(gòu)新型可拆換高延性梁-柱節(jié)點(diǎn)低周性能研究　出處：《東南大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 鋼貨架 分離式節(jié)點(diǎn) 新型可拆換高延性節(jié)點(diǎn) 低周反復(fù)荷載試驗(yàn) 彎矩—轉(zhuǎn)角曲線 參數(shù)化分析

【摘要】：大型組裝式鋼貨架作為當(dāng)今主流的倉(cāng)儲(chǔ)結(jié)構(gòu)體系,在各個(gè)行業(yè)應(yīng)用廣泛,具有廣闊的前景。但其采用的分離式柱卡節(jié)點(diǎn)在承載和耗能方面性能較差,使得貨架結(jié)構(gòu)抗震能力薄弱,存在極大的安全隱患。因此,對(duì)傳統(tǒng)節(jié)點(diǎn)進(jìn)行改進(jìn)和研究,提出新型的貨架梁-柱節(jié)點(diǎn),對(duì)貨架結(jié)構(gòu)承載能力和抗震能力的提高具有重要的理論意義和工程應(yīng)用價(jià)值。本文在傳統(tǒng)分離式節(jié)點(diǎn)的基礎(chǔ)上,提出一種合理高效的新型可拆換高延性梁-柱節(jié)點(diǎn)。新型節(jié)點(diǎn)結(jié)合快速插接和螺栓連接兩種節(jié)點(diǎn)的優(yōu)勢(shì),大幅提升貨架節(jié)點(diǎn)的剛度和延性,有效增強(qiáng)其承載性能和抗震性能。同時(shí),可拆換的節(jié)點(diǎn)形式能夠促進(jìn)全鍍鋅貨架的推出,廢除傳統(tǒng)噴塑的防銹工藝,使貨架的加工綠色環(huán)保無(wú)污染,提高生產(chǎn)效率,大幅度提升倉(cāng)儲(chǔ)結(jié)構(gòu)的結(jié)構(gòu)性能和可持續(xù)發(fā)展能力。本文結(jié)合不同的工藝做法,共研究?jī)深?lèi)五種貨架梁-柱節(jié)點(diǎn)。首先,依據(jù)相關(guān)規(guī)范規(guī)定,設(shè)計(jì)和制定節(jié)點(diǎn)雙懸臂梁試驗(yàn)裝置及方案,對(duì)五種節(jié)點(diǎn)進(jìn)行低周反復(fù)荷載試驗(yàn)研究；其次,通過(guò)試驗(yàn)結(jié)果和現(xiàn)象的整理分析,對(duì)五種節(jié)點(diǎn)的承載性能和抗震性能進(jìn)行詳細(xì)研究；接著,采用有限元對(duì)五種節(jié)點(diǎn)進(jìn)行數(shù)值模擬,與試驗(yàn)結(jié)果對(duì)比,進(jìn)一步研究貨架梁-柱節(jié)點(diǎn)的性能,總結(jié)其主要影響因素；最后,對(duì)新型梁-柱節(jié)點(diǎn)進(jìn)行參數(shù)化分析,研究各個(gè)因素的影響關(guān)系,為接下來(lái)的工程應(yīng)用和研究改進(jìn)提供參考依據(jù)。通過(guò)上述研究,主要結(jié)論如下：1.分離式節(jié)點(diǎn)的破壞模式由于立柱處對(duì)穿螺栓的設(shè)置而不同。傳統(tǒng)分離式節(jié)點(diǎn)的破壞模式為上、下卡舌撕裂脫落；增設(shè)立柱對(duì)穿螺栓后,卡舌受力和柱卡變形得到改善,破壞模式為橫梁梁端裂縫斷裂。2.整體式節(jié)點(diǎn)的失效破壞主要發(fā)生在橫梁與牛腿連接處,由于連接形式的不同而不同。新型整體式節(jié)點(diǎn)由于橫梁梁端螺栓脫出而失效破壞,采用對(duì)穿螺栓連接橫梁的整體式節(jié)點(diǎn)由于橫梁梁端對(duì)穿螺栓剪斷而失效,采用壓鉚螺母連接橫梁的整體式節(jié)點(diǎn)易因橫梁梁端壓鉚螺母脫落而失效。3.五種節(jié)點(diǎn)均有一定程度的滑移性,彎矩一轉(zhuǎn)角滯回曲線均有不同程度的“捏縮”。對(duì)于傳統(tǒng)分離式節(jié)點(diǎn),立柱對(duì)穿螺栓的設(shè)置能夠有效改善正反向受力的不對(duì)稱(chēng)性,節(jié)點(diǎn)在承載性能和抗震性能上均有顯著提高。4.整體式柱卡實(shí)現(xiàn)了節(jié)點(diǎn)的整體性,改善節(jié)點(diǎn)的受力性能,顯著提升節(jié)點(diǎn)的承載能力、延性以及能量耗散能力,對(duì)節(jié)點(diǎn)抗震性能的提高起到關(guān)鍵作用。5.橫梁和牛腿的連接方式對(duì)整體式節(jié)點(diǎn)的承載性能和抗震性能有重要影響。在橫梁梁端翼緣開(kāi)螺紋孔,通過(guò)頂面和底面螺栓與其連接,使整體式節(jié)點(diǎn)在受力和抗震耗能等方面表現(xiàn)最好。
[Abstract]:Large assembled steel shelf storage structure as the current mainstream, widely used in various industries, and has broad prospects. But the separation column card node performance in bearing and energy dissipation is poor, the shelf structure seismic capacity is weak, there is a big security risk. Therefore, improvement and Research on the traditional node. A new shelf beam column node, which has important theoretical significance and application value for the bearing capacity and seismic capacity of shelf structure improved. Based on the traditional separated nodes, puts forward a new type of detachable reasonable and efficient for high ductility of beam column joints. The new node combined with rapid insertion and bolted two a node's advantage, significantly enhance the shelf node stiffness and ductility, effectively enhance the bearing capacity and seismic performance. At the same time, the node form of detachable zinc can promote the whole goods Frame of the launch, the abolition of the traditional spray antirust technology, the processing of green pollution-free shelf, improve production efficiency, greatly enhance the structure performance of storage structure and the ability of sustainable development. Based on the different techniques and practices, a total of two categories of five kinds of rack beam column node. First of all, according to the relevant regulations. The design and development of node double cantilever beam test device and program for cyclic test of five kinds of nodes; secondly, through experimental results and phenomenon analysis, bearing capacity and seismic performance of five kinds of nodes in detail; then, using the finite element numerical simulation of five kinds of nodes, comparison with the test results, further study on shelf performance of beam column joint, summarized the main influencing factors; finally, the parametric analysis model of beam column joint, influence of various factors, as the ground To provide reference for engineering application and research down improvement. Through the above research, the main conclusions are as follows: 1. the failure mode of separated nodes because of the post of bolt set and different. In the traditional failure mode split node on the card under the tongue torn off; set up by column on the wear bolt, tongue by card the force and deformation of column card is improved, failure mode of end crack fracture of.2. monolithic node for beam beam damage mainly occurs in the joint of beam and corbel, due to different connection forms and different. New type of integral node due to beam bolt failure and Liang Duan out of the whole node type, bolted beam due to wear beam beam end failure to wear bolt cut, using integral node pressure riveting nut connected beams due to beam beam end pressure riveting nut off failure of.3. five has a certain degree of node Slip, moment rotation hysteresis curves have different degrees of "pinch". For the traditional separate column node, can effectively improve the asymmetry of positive and negative stress on the wear bolt set, significantly improve the bearing capacity and node in the seismic performance of both.4. monolithic column card of the whole node. Improve the mechanical properties of the nodes, significantly enhance the bearing capacity of the node, the ductility and energy dissipation capacity, the seismic performance of nodes to improve the connection key role of.5. beam and corbel of integral node load have important influence on the performance and seismic performance. Threaded holes in the beam beam through the top and bottom flange. The bottom surface of the bolt is connected, so that the overall best performance in the joint force and energy dissipation and so on.

【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TU391

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