【摘要】：臨時固結作為保證連續(xù)梁橋懸臂施工安全性和穩(wěn)定性的重要措施之一,如何使臨時固結的設置對懸臂施工中橋梁結構的內力、撓度和穩(wěn)定性有利,這是工程設計、施工控制中的重要問題。本文結合實際工程,就臨時固結各種現(xiàn)行做法對橋梁內力、撓度、穩(wěn)定性的影響進行研究,探究合理的臨時固結形式和結構參數(shù),以保證橋梁懸臂施工的可靠性、合理性和經(jīng)濟性。本文具體研究了以下幾個要點：(1)論文對連續(xù)梁橋臨時固結常見構造的具體形式進行分析,并按照臨時固結受力特點對其歸納分類,探索各類臨時固結的適用條件和優(yōu)缺點,并總結臨時固結在設計和施工中的注意事項。(2)論文介紹了工程中常見的臨時固結模擬方法,并結合實際工程探究臨時固結模擬方法及臨時固結支承剛度對計算結果的影響,總結各模擬方法的優(yōu)缺點和適用范圍,為工程中臨時固結的模擬分析提供參考。(3)論文通過對連續(xù)梁橋臨時固結進行受力分析,得到橋梁內力、撓度與臨時固結參數(shù)的關系,總結臨時固結結構性能的主要影響因素。再通過建立橋梁有限元模型,分析不同臨時固結形式及結構參數(shù)對橋梁結構應力和撓度的影響,得出臨時固結結構參數(shù)的設計范圍和對橋梁的影響規(guī)律。論文還就臨時支座的設置對橋梁的影響進行研究分析,得到臨時支座的設置原則。最后論文對臨時固結形式及結構參數(shù)對主梁長期撓度的影響進行分析,得到臨時固結對主梁長期撓度的影響規(guī)律,對臨時固結的設計和施工提供一定的參考。(4)論文簡要介紹連續(xù)梁橋懸臂施工的穩(wěn)定性理論,并基于特征值屈曲理論就臨時固結對最大懸臂狀態(tài)下連續(xù)梁橋施工穩(wěn)定性的影響進行分析并得出影響規(guī)律。同時還分析了臨時支墩系梁設置對高墩連續(xù)梁橋施工穩(wěn)定性的影響,得到系梁的設置原則,為工程中合理設置系梁提供參考。(5)論文概括總結了優(yōu)化設計的一般數(shù)學模型和基本方法,并采用罰函數(shù)法(SUMT)編寫優(yōu)化程序對三類臨時固結進行參數(shù)優(yōu)化分析,得到臨時固結參數(shù)的優(yōu)化設計結果,為工程中臨時固結的選擇和設計提供參考。
[Abstract]:Temporary consolidation is one of the important measures to guarantee the safety and stability of cantilever construction of continuous beam bridge. How to make the temporary consolidation of bridge structure favorable to the internal force, deflection and stability of the bridge structure in cantilever construction is the engineering design. Important problems in construction control. Combined with practical engineering, this paper studies the influence of various current methods of temporary consolidation on bridge internal force, deflection and stability, and probes into reasonable temporary consolidation form and structural parameters to ensure the reliability of bridge cantilever construction. Rationality and economy. The main points of this paper are as follows: (1) the paper analyzes the concrete forms of the common structures of temporary consolidation of continuous girder bridges, and induces and classifies them according to the characteristics of temporary consolidation forces, and explores the applicable conditions, advantages and disadvantages of all kinds of temporary consolidation. And summarizes the matters needing attention in the design and construction of temporary consolidation. (2) the paper introduces the common methods of temporary consolidation simulation in engineering, and probes into the influence of temporary consolidation simulation method and the stiffness of temporary consolidation support on the calculation results. The advantages and disadvantages and applicable scope of each simulation method are summarized, which provides a reference for the simulation analysis of temporary consolidation in engineering. (3) by analyzing the force of temporary consolidation of continuous beam bridge, the relationship between bridge internal force, deflection and temporary consolidation parameters is obtained. The main factors affecting the properties of temporary consolidation structures are summarized. By establishing the finite element model of the bridge, the influence of different temporary consolidation forms and structural parameters on the stress and deflection of the bridge structure is analyzed, and the design range of the parameters of the temporary consolidation structure and the influence law on the bridge are obtained. The paper also analyzes the influence of temporary support on bridge, and obtains the setting principle of temporary support. Finally, the effect of temporary consolidation form and structural parameters on the long-term deflection of the main beam is analyzed, and the effect of the temporary consolidation on the long-term deflection of the main beam is obtained. It provides a certain reference for the design and construction of temporary consolidation. (4) the stability theory of cantilever construction of continuous beam bridge is briefly introduced in this paper. Based on the eigenvalue buckling theory, the influence of temporary consolidation on the construction stability of continuous beam bridges under the maximum cantilever state is analyzed and the influence law is obtained. At the same time, it also analyzes the influence of the temporary supporting piers on the construction stability of the continuous beam bridge with high piers, and obtains the setting principle of the tie beam. (5) the paper summarizes the general mathematical model and basic methods of optimal design, and uses penalty function method (SUMT) to compile optimization program to optimize the parameters of three kinds of temporary consolidation. The optimal design results of the temporary consolidation parameters are obtained, which provides a reference for the selection and design of the temporary consolidation in engineering.
【學位授予單位】：東南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U445.4

【參考文獻】

相關期刊論文 前10條

1 孫九春;;PC懸澆梁墩旁臨時固結的計算方法研究與應用[J];鐵道工程學報;2014年09期

2 成崇山;;掛籃懸澆連續(xù)梁墩頂砂筒和精軋螺紋鋼筋組合臨時固結方案研究[J];江蘇科技信息;2014年10期

3 王國杰;;連續(xù)箱梁懸臂施工臨時固結設計與分析[J];國防交通工程與技術;2014年S1期

4 程健;田俊;尹曉文;;懸臂澆筑連續(xù)箱梁的臨時固結受力分析研究[J];重慶建筑;2013年10期

5 丁暉東;;大跨度預應力混凝土連續(xù)梁橋施工控制[J];甘肅科學學報;2013年03期

6 杜斌;包太;黃春暉;汪權明;;大跨徑懸臂澆筑連續(xù)箱梁墩頂臨時固結結構設計研究[J];貴州大學學報(自然科學版);2013年04期

7 廖小平;;橋梁大噸位(100T)砂筒制作與檢驗[J];科技與企業(yè);2013年13期

8 蔣志強;曾燕玲;;懸澆連續(xù)梁墩梁臨時固結技術的驗算與應用[J];西部交通科技;2013年05期

9 陳萍;王一文;;PC連續(xù)剛構橋雙薄壁墩設計參數(shù)優(yōu)化分析[J];科學技術與工程;2012年34期

10 曾振華;習安;李昭廷;;剛構—連續(xù)組合梁橋臨時固結拆除順序的研究[J];公路工程;2012年02期

相關博士學位論文 前2條

1 薛興偉;大跨PC梁橋跨中下?lián)霞傲芽p控制研究[D];暨南大學;2013年

2 李開言;雙肢薄壁高墩剛構橋懸臂施工穩(wěn)定性與風效應研究[D];中南大學;2005年

相關碩士學位論文 前10條

1 張少慶;施工階段誤差對大跨PC連續(xù)梁橋長期工作性能的影響[D];長安大學;2014年

2 劉益銘;高墩大跨連續(xù)剛構不對稱澆筑施工受力特點及穩(wěn)定性分析[D];重慶交通大學;2014年

3 劉永強;多跨連續(xù)剛構橋施工穩(wěn)定性分析及合龍方案研究[D];湘潭大學;2014年

4 姚寅初;斜拉橋塔梁臨時固結節(jié)段主塔局部受力特性分析[D];重慶交通大學;2013年

5 周雨;大跨徑PC梁橋長期下?lián)霞捌鋵Σ叻治鯷D];重慶交通大學;2013年

6 王勇;中外規(guī)范下大跨徑預應力混凝土連續(xù)梁橋結構設計的差異性研究[D];蘭州交通大學;2013年

7 崔金燦;大跨度預應力混凝土連續(xù)梁橋預應力損失對長期撓度的影響[D];石家莊鐵道大學;2013年

8 劉淼;基于遺傳算法的單層桿系空間結構優(yōu)化設計[D];哈爾濱工業(yè)大學;2012年

9 金結飛;大跨PC連續(xù)箱梁橋長期持續(xù)下?lián)铣梢蜓芯縖D];廣東工業(yè)大學;2012年

10 史記青;多跨連續(xù)梁橋臨時固結及其模擬方法研究[D];長安大學;2012年

，

本文編號：2206085