本文選題：廊橋 + 主拱圈��； 參考：《重慶交通大學(xué)》2014年碩士論文

【摘要】：近些年來，全國各地在現(xiàn)代化城市建設(shè)中，為滿足人們的交通需求和審美要求，紛紛開始建立廊橋，廊橋結(jié)合各個地方的文化環(huán)境特色，風(fēng)格各異�，F(xiàn)代廊橋作為中國豐富的古典園林技術(shù)和現(xiàn)代橋梁技術(shù)的結(jié)合，是一次大膽的創(chuàng)新和嘗試，，比古代廊橋更能適應(yīng)現(xiàn)代社會的需求。但是，現(xiàn)代廊橋存在規(guī)模大、功能復(fù)雜、橋體結(jié)構(gòu)與上部建筑結(jié)構(gòu)之間關(guān)系復(fù)雜三個建設(shè)難點。目前，我國對現(xiàn)代廊橋的設(shè)計研究尚處在初探階段，在風(fēng)對廊橋影響方面的研究更少，鑒于廊橋因為橋屋的存在迎風(fēng)面積大大增加，考慮風(fēng)載的影響對橋梁的安全性是很必要的。 本文以劍閣縣劍門新區(qū)清江河景觀廊橋為依托工程，運用有限元軟件midas建立模型，分別分析主拱圈、立柱、橋墩等主要結(jié)構(gòu)構(gòu)件在廊橋無風(fēng)荷載作用，與廊橋整體迎風(fēng)兩種情況下內(nèi)力與變形的變化，并且將拱橋受風(fēng)荷載作用的影響與廊橋相比較，最后據(jù)此提出相關(guān)建議意見，為同類廊橋的設(shè)計提供參考資料。 按規(guī)范規(guī)定計算出靜風(fēng)風(fēng)壓，將風(fēng)荷載加載到廊橋之后，廊橋的主要結(jié)構(gòu)構(gòu)件（主拱圈、立柱、橋墩）的y向剪力，扭矩Mx，繞z軸的彎矩均有不同程度的增加，在不同的荷載組合之下增長的倍數(shù)又有不同。將廊橋的分析結(jié)果對比拱橋加風(fēng)載前后內(nèi)力的變化，得知風(fēng)荷載確實對廊橋內(nèi)力的影響顯著大過風(fēng)對拱橋的影響，拱橋可以不考慮風(fēng)的影響，但是為保證廊橋的安全與耐久性，廊橋設(shè)計時應(yīng)該考慮風(fēng)荷載的組合。
[Abstract]:In recent years, in the construction of modern cities, in order to meet the needs of people's transportation and aesthetic requirements, the bridge has begun to build a gallery bridge, which combines the cultural and environmental characteristics of various places, with different styles. As a combination of Chinese classical garden technology and modern bridge technology, modern gallery bridge is a bold innovation and attempt, which can meet the needs of modern society better than the ancient bridge. However, there are three difficulties in modern bridge construction, such as large scale, complex function and complex relationship between bridge structure and superstructure. At present, the research on the design of modern covered bridges in China is still in the initial stage, and the research on the influence of wind on the bridges is even less, in view of the fact that the windward area of the bridges is greatly increased because of the existence of the bridge houses. It is necessary to consider the influence of wind load on bridge safety. In this paper, based on the Qingjiang River landscape bridge in Jianmen New District, Jiange County, the finite element software midas is used to establish the model, and the main arch ring, column, pier and other main structural components are analyzed respectively without wind load on the bridge. The change of internal force and deformation of arch bridge under the condition of whole upwind is compared with that of the bridge under wind load. Based on this, some suggestions are put forward to provide reference for the design of the same kind of bridge. The static wind pressure is calculated according to the specification, and after the wind load is loaded into the bridge, the y-direction shear force, torque Mx and bending moment around z axis of the main structural members (main arch ring, column, pier) of the gallery bridge are all increased to varying degrees. The multiple increases under different load combinations are different. Comparing the analysis results of the bridge with the change of the internal force before and after the arch bridge is loaded with wind, it is found that the wind load does have a significant effect on the internal force of the bridge than the influence of the wind on the arch bridge, and the arch bridge may not consider the influence of the wind, but in order to ensure the safety and durability of the bridge, The combination of wind load should be considered in the design of the bridge.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U441

【參考文獻】

相關(guān)期刊論文 前8條

1 張克華;;高層建筑結(jié)構(gòu)抗風(fēng)電算結(jié)果的合理性分析[J];工程建設(shè)與設(shè)計;2011年10期

2 羅濤;;營口遼河公路大橋抗風(fēng)性能研究[J];公路交通科技;2009年02期

3 肖鳴;;風(fēng)則江廊橋的設(shè)計與施工[J];華東公路;2004年Z1期

4 鐘振宇;樓文娟;;超高層建筑在風(fēng)重耦合作用下響應(yīng)分析[J];哈爾濱工業(yè)大學(xué)學(xué)報;2012年06期

5 李曙光;;橋梁抗風(fēng)與風(fēng)洞試驗[J];山西建筑;2007年14期

6 嚴(yán)國香;;瓊中營根路景觀廊橋設(shè)計[J];黑龍江科技信息;2012年25期

7 朱良凱;左會軍;劉道龍;;橋梁抗風(fēng)性能分析簡述[J];四川建筑;2008年03期

8 萬鈞;滕二甫;;風(fēng)對橋梁結(jié)構(gòu)的影響及作用淺析[J];交通科技;2009年S1期

相關(guān)博士學(xué)位論文 前2條

1 蔣燁;中國廊橋建筑與文化研究[D];中南大學(xué);2010年

2 何晗欣;橋梁抗震與抗風(fēng)及其影響因素分析研究[D];長安大學(xué);2011年

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