【摘要】：伴隨著我國經(jīng)濟的增長,交通的便利性顯得越來越重要,尤其是近些年來西部大開發(fā)的深入,高速公路設(shè)施在崇山峻嶺間修建的必要性越來越急迫,所以橋梁連續(xù)剛構(gòu)橋就成為選擇對象之一。目前連續(xù)剛構(gòu)橋以其跨越能力大、經(jīng)濟性較好等優(yōu)勢廣泛運用于公路、城市橋梁,特別是高速公路進入山區(qū)后更是成為了跨越溝谷最常見的大跨度橋梁。連續(xù)剛構(gòu)橋的梁體為連續(xù)與橋墩剛接,橋墩參與受彎變形,提高了橋梁的整體性,使車輛行駛更加安全。針對上述情況,對于研究其地震作用下的動力特性,抗震設(shè)計的分析顯得尤為重要和迫切。結(jié)合上述內(nèi)容,本文研究的主要工作有:第一,對地震的成因、地震波以及地震的危害做了詳細說明,著重介紹了近場地震,由此說明高墩連續(xù)剛構(gòu)橋受近場地震作用影響研究的必要性;第二,簡述了國內(nèi)外高墩連續(xù)剛構(gòu)橋規(guī)范及工程應(yīng)用研究領(lǐng)域的進展,抗震方法研究的進展。然后又介紹了抗震設(shè)計方法研究的進展,以國內(nèi)某連續(xù)剛構(gòu)橋為例,借助于有限元分析軟件ANSYS建立了橋兩端分別為一般簡支約束和彈簧簡支約束兩種實體橋梁模型;第三,先對兩端簡支約束的模型進行靜力分析驗證結(jié)構(gòu)設(shè)計的合理性,再分別基于ANSYS對兩種模型進行模態(tài)分析。然后用反應(yīng)譜法和時程分析法對模型進行多維地震反映分析,得出橋梁的動力響應(yīng)數(shù)據(jù);第四,研究分析了兩種結(jié)構(gòu)模型在多維地震作用下的動力響應(yīng)差異,初步得出了高墩連續(xù)剛構(gòu)橋部分約束的改變能夠?qū)蛄赫w抗震性能做出貢獻的結(jié)論,為同類型橋梁結(jié)構(gòu)的抗震設(shè)計和分析研究提供借鑒與參考。
[Abstract]:With the economic growth of our country, the convenience of transportation is becoming more and more important, especially with the development of the western region in recent years, the necessity of building expressway facilities between the mountains and mountains is becoming more and more urgent. So the continuous rigid frame bridge becomes one of the selected objects. At present, continuous rigid frame bridge is widely used in highway because of its advantages of large span ability and good economy. Urban bridges, especially expressway, have become the most common long-span bridge crossing gully after entering mountain area. The beam body of the continuous rigid frame bridge is connected with the bridge pier, and the bridge pier takes part in the bending deformation, which improves the integrity of the bridge and makes the vehicle run more safely. In view of the above situation, the analysis of seismic design is particularly important and urgent for studying its dynamic characteristics under earthquake action. Combined with the above contents, the main work of this paper is as follows: first, the causes of earthquakes, seismic waves and the hazards of earthquakes are explained in detail, and the near field earthquakes are emphatically introduced. Therefore, it is necessary to study the effect of near-field earthquake on continuous rigid frame bridges with high piers. Secondly, the research progress in the field of code and engineering application of continuous rigid frame bridges with high piers and the research progress of seismic methods at home and abroad are briefly described. Then the research progress of seismic design method is introduced. Taking a continuous rigid frame bridge in China as an example, two kinds of solid bridge models are established with the help of finite element analysis software ANSYS. The static analysis of the two simply supported models is carried out to verify the rationality of the structural design, and then the modal analysis of the two models is carried out based on ANSYS. Then the response spectrum method and time history analysis method are used to analyze the multi-dimensional seismic response of the model, and the dynamic response data of the bridge are obtained. Fourthly, the difference of the dynamic response of the two structural models under the action of multi-dimensional earthquake is studied and analyzed. The conclusion that the change of partial constraints of continuous rigid frame bridges with high piers can contribute to the overall seismic performance of the bridge provides a reference for the seismic design and analysis of the same type of bridge structures.
【學位授予單位】：西華大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：U448.23;U442.55

【參考文獻】

相關(guān)期刊論文 前10條

1 江輝;李新樂;竇慧娟;;近斷層長周期脈沖型地震動對豎向反應(yīng)譜的影響研究[J];振動與沖擊;2012年16期

2 王占飛;隋偉寧;吳權(quán);;E2地震作用下部分填充鋼管混凝土橋墩非線性時程分析及抗震性能評價[J];工程力學;2011年S1期

3 陸本燕;劉伯權(quán);劉鳴;邢國華;吳濤;;鋼筋混凝土橋墩性能指標量化研究[J];中國公路學報;2010年06期

4 宗周紅;陳樹輝;夏樟華;;鋼筋混凝土箱型高墩雙向擬靜力試驗研究[J];防災(zāi)減災(zāi)工程學報;2010年04期

5 夏修身;王常峰;;鋼筋混凝土橋墩基于性能的抗震設(shè)計研究[J];西安建筑科技大學學報(自然科學版);2010年02期

6 艾慶華;王東升;李宏男;孫治國;;基于塑性鉸模型的鋼筋混凝土橋墩地震損傷評價[J];工程力學;2009年04期

7 黃建文,朱f^;近場地震作用下鋼筋混凝土橋墩基于位移的抗震設(shè)計[J];土木工程學報;2005年04期

8 宋曉東,李建中;山區(qū)橋梁的抗震概念設(shè)計[J];地震工程與工程振動;2004年01期

9 李新樂,朱f^;近斷層地震速度脈沖效應(yīng)對橋墩地震反應(yīng)的影響[J];北方交通大學學報;2004年01期

10 王成博,史志利,李忠獻;隨機地震動場多點激勵下大跨度連續(xù)剛構(gòu)橋的地震反應(yīng)分析[J];地震工程與工程振動;2003年06期

相關(guān)博士學位論文 前1條

1 劉艷輝;基于性能抗震設(shè)計理論的城市高架橋抗震性能研究[D];西南交通大學;2008年

相關(guān)碩士學位論文 前6條

1 耿江瑋;高墩延性性能及設(shè)計方法研究[D];重慶交通大學;2011年

2 奉策紅;鋼筋混凝土箱型柱抗震性能的試驗研究與分析[D];湖南大學;2010年

3 陳敏海;鋼管混凝土高墩大跨連續(xù)剛構(gòu)橋地震響應(yīng)分析[D];長沙理工大學;2010年

4 胡宇;鋼管混凝土疊合格構(gòu)柱高墩性能試驗研究及非線性分析[D];西南交通大學;2010年

5 徐國鋒;高烈度區(qū)連續(xù)梁橋延性抗震設(shè)計初步研究[D];重慶交通大學;2009年

6 王棟磊;大跨橋梁地震動性態(tài)研究[D];大連理工大學;2006年

，

本文編號：2271540