發(fā)布時(shí)間：2018-06-29 21:04

  本文選題：設(shè)內(nèi)拉環(huán)的肋環(huán)型索穹頂結(jié)構(gòu) + 張拉整體結(jié)構(gòu)��； 參考：《西南交通大學(xué)》2014年碩士論文

【摘要】：索穹頂結(jié)構(gòu)是一種柔性張拉整體結(jié)構(gòu),主要由拉索和壓桿組成,依靠施加預(yù)應(yīng)力使結(jié)構(gòu)達(dá)到所設(shè)計(jì)的幾何形狀和結(jié)構(gòu)剛度,該結(jié)構(gòu)形式最大的特點(diǎn)就是在承受外荷載的時(shí)候,結(jié)構(gòu)發(fā)生變形的同時(shí)桿件的預(yù)應(yīng)力分布也隨之改變,從而在變形的過程中逐步調(diào)整承載能力。跨度大、自重輕、造價(jià)低、結(jié)構(gòu)受力合理及建筑造型新穎這些特點(diǎn),使索穹頂在大跨空間結(jié)構(gòu)形式中脫穎而出,近年來頗受關(guān)注。索穹頂?shù)慕Y(jié)構(gòu)形式當(dāng)中最經(jīng)典的就是Geiger型和Levy型,也叫做肋環(huán)型和聯(lián)方型,此外,還有Kiewitt型、混合型和鳥巢型。目前,國際上已有數(shù)十座建筑運(yùn)用了這種結(jié)構(gòu)形式且取得了較好的應(yīng)用效果,積累了豐富的理論及實(shí)踐經(jīng)驗(yàn)。本文的研究內(nèi)容主要有：(1)回顧了索穹頂結(jié)構(gòu)的發(fā)展歷程,介紹了索穹頂?shù)姆诸?闡述了國內(nèi)外主要的研究現(xiàn)狀,并提出了本文的主要研究內(nèi)容。(2)對(duì)一設(shè)有內(nèi)拉環(huán)的肋環(huán)型索穹頂結(jié)構(gòu)進(jìn)行加載歷程分析,分析各構(gòu)件內(nèi)力和節(jié)點(diǎn)位移隨加載的變化規(guī)律。然后對(duì)其進(jìn)行參數(shù)分析,研究初始預(yù)應(yīng)力水平、索桿截面面積、結(jié)構(gòu)矢高、壓桿高度、結(jié)構(gòu)跨度對(duì)受力性能的影響。(3)對(duì)上述設(shè)有內(nèi)拉環(huán)的肋環(huán)型索穹頂結(jié)構(gòu)進(jìn)行模態(tài)分析,分析其前100階自振頻率的分布和自振振型的特點(diǎn)。進(jìn)而對(duì)其進(jìn)行參數(shù)分析,研究其自振頻率和自振振型隨初始預(yù)應(yīng)力水平、索桿截面面積、結(jié)構(gòu)矢高、壓桿高度和跨度變化的規(guī)律。(4)本文還對(duì)設(shè)內(nèi)拉環(huán)的肋環(huán)型索穹頂結(jié)構(gòu)進(jìn)行了抗震時(shí)程分析,采用水平向、豎向和三維地震輸入對(duì)結(jié)構(gòu)進(jìn)行了多遇地震的時(shí)程分析,并對(duì)結(jié)構(gòu)的位移和內(nèi)力響應(yīng)進(jìn)行了研究。(5)優(yōu)化模型并對(duì)其進(jìn)行靜力加載分析和模態(tài)分析。(6)總結(jié)本文的主要結(jié)論,并指出還可進(jìn)一步深入的研究工作。
[Abstract]:Cable dome structure is a flexible tensioning structure, which is mainly composed of cables and compression rods. The structure can reach the designed geometric shape and structural stiffness by applying prestressing force. The biggest characteristic of the structure is when it is subjected to external loads. With the deformation of the structure, the prestress distribution of the member also changes with it, and the bearing capacity is adjusted step by step during the process of deformation. The characteristics of large span, light weight, low cost, reasonable structural force and novel architectural modeling make cable dome stand out in the form of long-span spatial structure, which has attracted much attention in recent years. Among the structural forms of cable-dome, the classical ones are Geiger type and Levy type, also called rib ring and joint square type, in addition, there are Kiewitt type, mixed type and bird's nest type. At present, dozens of buildings in the world have used this kind of structure form and obtained good application effect, and accumulated rich theory and practical experience. The main contents of this paper are as follows: (1) reviewing the development course of cable dome structure, introducing the classification of cable dome, expounding the main research status at home and abroad. The main contents of this paper are also presented. (2) the loading history of a ribbed ring cable dome structure with internal pull ring is analyzed, and the variation of internal force and joint displacement with loading is analyzed. Then the influence of the initial prestress level, the cross-section area of the cable rod, the height of the structure vector, the height of the compression bar and the span of the structure on the mechanical performance is studied. (3) the modal analysis of the above rib ring cable dome structure with internal pull ring is carried out. The distribution of the first 100 order natural vibration frequency and the characteristics of the natural vibration mode are analyzed. Then the parameter analysis is carried out, and the natural vibration frequency and vibration mode are studied with the initial prestress level, the cross-section area of the cable bar, the height of the structural vector. (4) the seismic time history analysis of the rib ring cable dome structure with internal tension ring is also carried out. The seismic time history analysis of the structure is carried out by using horizontal, vertical and three-dimensional earthquake input. The displacement and internal force response of the structure are studied. (5) the optimization model is optimized and the static loading analysis and modal analysis are carried out. (6) the main conclusions of this paper are summarized and it is pointed out that further research work can be carried out.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU399

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 闞遠(yuǎn);索穹頂結(jié)構(gòu)的設(shè)計(jì)理論與試驗(yàn)研究[D];東南大學(xué);2006年

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本文編號(hào)：2083366