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  本文選題：有限元分析　切入點：干接縫　出處：《鄭州大學(xué)》2015年碩士論文

【摘要】：近年來,預(yù)制裝配化技術(shù)憑借其施工速度快、質(zhì)量好、環(huán)保及對周圍交通環(huán)境影響小等優(yōu)點在橋梁建設(shè)中得到越來越廣泛的應(yīng)用。作為橋梁下部結(jié)構(gòu),預(yù)制裝配化橋墩也順應(yīng)著時代在逐漸發(fā)展。預(yù)制裝配化橋墩技術(shù)的發(fā)展對我國城市化建設(shè)及橋梁建設(shè)水平的提高有積極的影響。目前主要采用試驗研究、解析方法、纖維模型分析方法和實體有限元方法等方法來研究預(yù)制裝配化橋墩的結(jié)構(gòu)性能,其中采用實體有限元方法相關(guān)的研究相對較少。在前人研究基礎(chǔ)上,本文采用有限元分析軟件建立不同連接方式的預(yù)制節(jié)段拼裝橋墩實體有限元模型,對預(yù)制節(jié)段拼裝橋墩結(jié)構(gòu)性能進(jìn)行了研究,主要有以下研究內(nèi)容:1、建立整體現(xiàn)澆橋墩實體有限元模型,并采用滿足要求的荷載工況對整體現(xiàn)澆橋墩進(jìn)行加載得到相應(yīng)分析結(jié)果。對該整體現(xiàn)澆橋墩進(jìn)行結(jié)構(gòu)計算及二維有限元模型驗算,將驗算結(jié)果與實體有限元模型計算結(jié)果進(jìn)行對比以驗證整體現(xiàn)澆橋墩實體有限元模型的正確性,并以整體現(xiàn)澆橋墩的計算結(jié)果為基準(zhǔn)與預(yù)制節(jié)段拼裝橋墩進(jìn)行對比分析。2、建立墩身混凝土強(qiáng)度等級及配筋與整體現(xiàn)澆橋墩相同的干接縫預(yù)制節(jié)段拼裝橋墩及膠接縫預(yù)制節(jié)段拼裝橋墩實體有限元模型,采用與整體現(xiàn)澆橋墩相同的荷載工況對干接縫拼裝墩及膠接縫拼裝墩進(jìn)行加載,分析計算結(jié)果,并將兩者計算結(jié)果與整體現(xiàn)澆橋墩的計算結(jié)果進(jìn)行對比,以比較各墩結(jié)構(gòu)性能的差異。3、建立墩身混凝土強(qiáng)度等級及配筋與整體現(xiàn)澆橋墩相同但墩身濕接段混凝土齡期不同的三個濕接縫預(yù)制節(jié)段拼裝橋墩實體有限元模型,采用同整體現(xiàn)澆橋墩相同的荷載工況對三者進(jìn)行加載,對計算結(jié)果進(jìn)行分析,并將三者的計算結(jié)果與整體現(xiàn)澆橋墩、干接縫拼裝橋墩及預(yù)制節(jié)段拼裝橋墩的計算結(jié)果進(jìn)行對比分析,以比較不同連接方式預(yù)制節(jié)段拼裝橋墩結(jié)構(gòu)性能的差異。本文的研究得到了寧波市橋梁技術(shù)科技創(chuàng)新團(tuán)隊(2014B81003)的資助。
[Abstract]:In recent years, prefabricated assembly technology has been more and more widely used in bridge construction with the advantages of fast construction speed, good quality, environmental protection and small impact on the surrounding traffic environment.As the substructure of the bridge, prefabricated and assembled piers also comply with the times in the gradual development.The development of prefabricated and assembled pier technology has a positive effect on the urbanization construction and the improvement of bridge construction level in China.At present, experimental research, analytical method, fiber model analysis method and solid finite element method are mainly used to study the structural performance of precast assembled pier.On the basis of previous studies, the finite element model of precast segmental assembled piers with different connection modes is established by using finite element analysis software, and the structural performance of precast segmental assembled piers is studied.The main research contents are as follows: 1. The solid finite element model of the whole cast-in-place pier is established, and the corresponding analysis results are obtained by loading the monolithic cast-in-place pier under the load condition that meets the requirements.In order to verify the validity of the solid finite element model of the whole cast-in-place pier, the structural calculation and the two-dimensional finite element model are calculated and compared with the results of the solid finite element model.Based on the calculation results of integral cast-in-place piers and prefabricated segmental assembly piers, the concrete strength grade of piers and the prefabricated segment of precast joints with the same reinforcement as the integral cast-in-situ piers are established.Finite element model of precast jointed pier,Using the same load condition as the integral cast-in-place pier, the dry joint assembly pier and the glue joint assembly pier are loaded, the calculation results are analyzed, and the results are compared with those of the integral cast-in-place pier.By comparing the structural performance of different piers, a solid finite element model of precast pier with three wet joints is established, which has the same grade of concrete strength and reinforcement as the integral cast-in-place pier, but different age of wet joint section of pier.They are loaded under the same load condition as the whole cast-in-place pier, and the calculated results are analyzed, and the calculated results are compared with the monolithic cast-in-place piers.The calculation results of dry joint assembled piers and prefabricated segmental piers were compared and analyzed to compare the structural performance of prefabricated segmental piers with different connecting modes.The research of this paper is supported by Ningbo Bridge Technology Innovation team (2010-B 81003).
【學(xué)位授予單位】：鄭州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U441;U443.22

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭熙冬;;港珠澳大橋承臺墩身工廠化預(yù)制施工技術(shù)[J];橋梁建設(shè);2014年02期

2 王輝;李碩;;金塘大橋墩身預(yù)制工藝分析[J];中華建設(shè);2012年01期

3 柳春兵;張相仁;;山區(qū)高速公路橋梁施工方法探討[J];中國新技術(shù)新產(chǎn)品;2010年10期

4 曾秋寧;;ANSYS在預(yù)應(yīng)力鋼筋混凝土梁非線性有限元分析中的應(yīng)用[J];科學(xué)之友;2010年10期

5 過震文;黃少文;邵長宇;;預(yù)制拼裝技術(shù)在上海長江大橋中的應(yīng)用[J];世界橋梁;2009年S1期

6 王志強(qiáng);葛繼平;魏紅一;劉豐;;節(jié)段拼裝橋墩抗震性能研究進(jìn)展[J];地震工程與工程振動;2009年04期

7 劉云平;包華;洪俊青;陳國慶;;ANSYS的接觸分析在鋼筋混凝土滑移中的應(yīng)用[J];南通大學(xué)學(xué)報(自然科學(xué)版);2009年02期

8 劉高;吳宏波;黃李驥;王毅;唐亮;吳文明;劉天成;張杰;馬軍海;李貞新;付佰勇;李毅;鄔都;陳上有;徐群麗;;長大橋梁關(guān)鍵技術(shù)綜述[J];公路;2009年05期

9 謝小蘭;;L_p=44m干接梁設(shè)計[J];鐵道工程學(xué)報;2009年02期

10 趙寧;魏紅一;;節(jié)段拼裝橋墩擬靜力試驗研究[J];上海公路;2008年04期

相關(guān)碩士學(xué)位論文 前5條

1 賴安靜;裝配式鋼筋混凝土橋墩的力學(xué)性能分析[D];沈陽工業(yè)大學(xué);2013年

2 楊俊榮;體外預(yù)應(yīng)力裝配式橋墩方案設(shè)計及有限元分析[D];武漢理工大學(xué);2011年

3 王英;城市橋梁預(yù)制箱梁節(jié)段拼裝關(guān)鍵技術(shù)的研究[D];西南交通大學(xué);2011年

4 劉豐;節(jié)段拼裝預(yù)應(yīng)力混凝土橋墩擬靜力試驗和分析研究[D];同濟(jì)大學(xué);2008年

5 楊錚;預(yù)應(yīng)力混凝土結(jié)構(gòu)的三維有限元分析與研究[D];浙江大學(xué);2005年

，

本文編號：1713996