【摘要】：樹狀結(jié)構(gòu)力流明確，傳力合理，造型優(yōu)美，是一種集造型仿生和結(jié)構(gòu)仿生為一體的仿生結(jié)構(gòu)，可應(yīng)用于大型游樂場所、文化場館、機(jī)場建筑和候車站臺等結(jié)構(gòu)工程中。隨著樹狀結(jié)構(gòu)的不斷應(yīng)用和研究的逐漸深入，在分析理論方面還有一些課題需要完善，如簡便高效的樹狀結(jié)構(gòu)找形方法和太陽輻射下非均勻溫度場對樹狀結(jié)構(gòu)的影響等。本文采用數(shù)值模擬、試驗研究和現(xiàn)場實測相結(jié)合的方法，對上述問題進(jìn)行了深入的研究，取得了一些研究成果，以期對樹狀結(jié)構(gòu)的理論研究和工程應(yīng)用提供一定參考。 作為仿生結(jié)構(gòu)的一種，樹狀結(jié)構(gòu)的定義和組成編碼等基本概念并沒有明確規(guī)定。本文將樹狀結(jié)構(gòu)定義為在研究自然界中樹木的形態(tài)及受力特性的基礎(chǔ)上，，所設(shè)計的具備一定支承作用的結(jié)構(gòu)。為便于對比分析并完善樹狀結(jié)構(gòu)的基本概念，提出樹狀結(jié)構(gòu)的結(jié)構(gòu)組成，規(guī)定樹狀結(jié)構(gòu)的編碼。在總結(jié)實際工程應(yīng)用的基礎(chǔ)上，按照不同的分類方式對樹狀結(jié)構(gòu)進(jìn)行分類。可為樹狀結(jié)構(gòu)系統(tǒng)研究奠定基礎(chǔ)。 樹狀結(jié)構(gòu)的形態(tài)關(guān)系結(jié)構(gòu)的力學(xué)性能，如何使結(jié)構(gòu)受力更為合理，是值得關(guān)注和研究的。在綜合比較樹狀結(jié)構(gòu)物理找形、數(shù)值模擬找形方法，研究連續(xù)折線索單元的基礎(chǔ)上，提出一種基于連續(xù)折線索單元的高效樹狀結(jié)構(gòu)找形方法，該方法模擬索單元的只拉特性且操作簡便。將該方法應(yīng)用于二維樹狀結(jié)構(gòu)的找形分析，能夠有效減小節(jié)點荷載和均布荷載下樹狀結(jié)構(gòu)的桿件單元彎矩，效果較理想。以二級分杈和三級分杈樹狀結(jié)構(gòu)為例，給出靜力找形方法和動力找形方法的一般步驟。通過模擬試驗，并與數(shù)值找形方法對比，驗證了基于連續(xù)折線索單元找形方法的可行性。對節(jié)點荷載下的二級分杈樹狀結(jié)構(gòu)提出優(yōu)化方法，并對樹狀結(jié)構(gòu)的找形結(jié)果進(jìn)行初步探討。 提出基于連續(xù)折線索單元的三維樹狀結(jié)構(gòu)找形方法，找形后的單元彎矩值減小。將該找形方法應(yīng)用于天山海世界米立方項目中樹狀結(jié)構(gòu)的找形分析，對找形確定的樹狀結(jié)構(gòu)與實際采用的樹狀結(jié)構(gòu)進(jìn)行力學(xué)性能的對比分析。對樹狀結(jié)構(gòu)樹枝分級不同的整體結(jié)構(gòu)進(jìn)行結(jié)構(gòu)性能研究，二級分杈樹狀結(jié)構(gòu)支承的結(jié)構(gòu)力學(xué)性能優(yōu)于一級分杈樹狀結(jié)構(gòu)體系，明顯優(yōu)于普通柱結(jié)構(gòu)。樹狀結(jié)構(gòu)與上部屋蓋剛接連接和鉸接連接對結(jié)構(gòu)整體性能影響不大。樹狀結(jié)構(gòu)的節(jié)點形式對單樹和屋蓋組合的結(jié)構(gòu)形式影響較大，考慮米立方工程周圈環(huán)梁落地，樹狀結(jié)構(gòu)節(jié)點形式對結(jié)構(gòu)整體性能影響不大。 室內(nèi)大空間環(huán)境供暖或制冷，外部太陽輻射和內(nèi)外大溫差的共同作用下，樹狀結(jié)構(gòu)支承的整體結(jié)構(gòu)處于動態(tài)的非均勻溫度場作用下。對米立方工程在夏季的結(jié)構(gòu)溫度現(xiàn)場實測和數(shù)據(jù)采集，驗證理論分析得到的非均勻溫度場數(shù)值模擬結(jié)果。研究不同溫度工況對樹狀支承結(jié)構(gòu)的性能影響，得到溫度作用對結(jié)構(gòu)影響較大，且太陽輻射下非均勻溫度場對結(jié)構(gòu)整體影響較大的結(jié)論，考慮米立方室內(nèi)戲水部分的恒溫因素，非均勻溫度場下的樹狀結(jié)構(gòu)內(nèi)力分析更加符合實際情況。樹狀結(jié)構(gòu)作為支承的整體結(jié)構(gòu)相較于普通柱支承的結(jié)構(gòu)，能夠有效減小溫度作用下結(jié)構(gòu)的單元應(yīng)力和節(jié)點位移。 基于三維樹狀結(jié)構(gòu)的性能研究，提出有效抗側(cè)力、提高結(jié)構(gòu)協(xié)同受力能力的森林結(jié)構(gòu)體系，并對該體系進(jìn)行結(jié)構(gòu)性能研究。
[Abstract]:The tree structure force flow is clear, the transmission force is reasonable, the modeling is beautiful, and is a bionic structure integrating modeling bionic and structural bionic as a whole, and can be applied to structural engineering such as large amusement parks, cultural venues, airport buildings and waiting stations. With the gradual application of tree structure and the gradual deepening of research, some subjects need to be improved in the aspects of analysis theory, such as simple and efficient tree structure finding method and the influence of non-uniform temperature field on tree structure under the solar radiation. In this paper, numerical simulation, experimental research and field measurement are used to study the above problems, and some research results have been obtained with a view to providing some reference for the theoretical research and engineering application of the tree structure. As a kind of bionic structure, the basic concepts such as the definition and composition coding of the tree structure are not clear In this paper, the tree structure is defined as the foundation of studying the shape and bearing characteristics of trees in nature. Structure. For the purpose of comparing and analyzing and improving the basic concept of tree structure, the structure composition of tree structure is put forward, and the tree structure is specified. coding. On the basis of summarizing the practical engineering application, the tree structure is carried out according to different classification modes Classify. Can lay a foundation for the research of tree structure system On the basis of the mechanical properties of the shape relation structure of the tree structure, how to make the structure stress more reasonable, it is worth closing In this paper, a kind of efficient tree structure finding method based on continuous fold line unit is proposed in this paper, which simulates the pull-out characteristic of cable unit. The method is simple and convenient to operate. The method is applied to the finding analysis of the two-dimensional tree structure, and can effectively reduce the bending moment of the rod unit of the tree structure under the load of the node and the load of the uniform cloth, The method of static finding and the method of power finding are given in this paper. Through the simulation test, and compared with the numerical finding method, the shape-finding method based on the continuous fold line unit is verified. The feasibility of the method is as follows: the optimization method is put forward for the tree structure of the secondary sub-tree under the load of the node, and the finding results of the tree structure are obtained. In this paper, a three-dimensional tree structure finding method based on continuous fold line unit is put forward. The finding method is applied to the shape analysis of the tree structure in the world rice cube project of the Tianshan Sea, and the tree structure determined by the finding shape is subjected to the force of the tree structure actually adopted. The structural and mechanical properties of tree-like structure supported by tree structure are better than that of the first-stage branch-tree structure system, and the structural mechanical properties of the two-stage branch-tree structure support are better than that of the first-stage branch-tree structure. the tree structure is connected with the upper house cover just after being connected and the hinged connection pair structure The node form of tree structure has great influence on the structure form of single tree and house cover combination, which takes into account the structure of the ground and tree structure nodes of the round ring beam of Micube project. The overall performance impact is not large. Under the common action of indoor large space environment heating or cooling, external solar radiation and large temperature difference inside and outside, the overall structure of the tree structure support is in motion. Under the action of non-uniform temperature field of the state, the measurement and data acquisition of the structural temperature of Micube project in summer and the non-uniform temperature field are obtained. The results of numerical simulation of uniform temperature field are studied. The effect of different temperature conditions on the structure of the tree support structure is studied. The effect of temperature on the structure is great, and the non-uniform temperature field under the solar radiation has a great influence on the whole structure. Constant temperature and non-uniform temperature field of indoor play water part According to the structure of the support, the tree structure can effectively reduce the junction under the action of temperature. Based on the performance research of three-dimensional tree structure, this paper proposes a forest structure system with effective anti-lateral force and increasing the capacity of structural collaborative stress.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TU31

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 黃崇燦;張漢深;;樹枝結(jié)構(gòu)安裝技術(shù)分析[J];城市住宅;2009年07期

2 王毅;葉見曙;;溫度梯度對混凝土曲線箱梁影響的計算方法[J];東南大學(xué)學(xué)報(自然科學(xué)版);2005年06期

3 雷笑;葉見曙;王毅;;日照作用下混凝土箱梁的溫差代表值[J];東南大學(xué)學(xué)報(自然科學(xué)版);2008年06期

4 單建，藍(lán)天;動力松弛法在張拉結(jié)構(gòu)靜力分析中的應(yīng)用[J];東南大學(xué)學(xué)報;1994年03期

5 陳曉強(qiáng);劉其偉;朱俊;;鋼-混凝土組合箱梁日照溫差的實測和理論分析(英文)[J];Journal of Southeast University(English Edition);2009年04期

6 徐麗;陳建秋;吳大鵬;楊澤群;;大跨度鋼屋蓋結(jié)構(gòu)的日照溫度應(yīng)力觀測[J];低溫建筑技術(shù);2006年03期

7 殷志祥,張輝;空間網(wǎng)架結(jié)構(gòu)邊界約束對網(wǎng)架溫度應(yīng)力的影響[J];遼寧工程技術(shù)大學(xué)學(xué)報(自然科學(xué)版);2002年06期

8 蔡長賡;樹狀結(jié)構(gòu)在公共建筑中的應(yīng)用[J];工程建設(shè)與設(shè)計;2002年03期

9 呂培印,宋玉普;不同溫度下混凝土抗拉疲勞性能試驗研究[J];工程力學(xué);2003年02期

10 孫國晨;關(guān)榮財;姜英民;牟春雷;霍春雨;徐豐;;鋼-混凝土疊合梁橫截面日照溫度分布研究[J];工程力學(xué);2006年11期

相關(guān)博士學(xué)位論文 前2條

1 毋英俊;連續(xù)折線索單元及節(jié)點研究[D];天津大學(xué);2010年

2 劉紅波;弦支穹頂結(jié)構(gòu)施工控制理論與溫度效應(yīng)研究[D];天津大學(xué);2011年

本文編號：2263420