本文選題：波形鋼腹板 + 靜力分析��； 參考：《華東交通大學(xué)》2014年碩士論文

【摘要】：波形鋼腹板PC橋梁源于法國，由于這種新型橋梁能徹底解決混凝土箱梁橋“腹板開裂”頑癥、且具有很高承載能力，20世紀(jì)80年代在法國出現(xiàn)后便很快在日本、德國、韓國等國家得到應(yīng)用和推廣。我國也對該新型橋梁展開大量的科學(xué)研究，，并成功建設(shè)了幾十座波紋鋼腹板橋梁。到目前為止，各國已系統(tǒng)研究波紋鋼腹板簡支梁結(jié)構(gòu)的靜力性能如抗剪、抗彎、抗扭、鋼腹板的穩(wěn)定性，而簡支變連續(xù)橋梁的受力分析卻較少，并且對于波紋鋼腹板橋梁的動力特性研究還在起步階段。 本文依托一座已建的簡支變連續(xù)波紋鋼腹板橋梁為例，采用有限元方法，主要對比分析了波形鋼腹板橋梁和混凝土橋梁的靜力性能和動力特性，研究了橫隔板對波紋鋼腹板橋梁的影響和比較分析了該橋梁抗震性能。本文的研究工作表明：波形鋼腹板橋梁和混凝土腹板橋梁同樣具有很強(qiáng)的抗彎性能，且具有更好的抗剪性能。波形鋼腹板軸向剛度非常低，基本不抵抗軸向力和彎矩，可以認(rèn)為波形鋼腹板橋梁彎矩產(chǎn)生的正應(yīng)力主要由混凝土頂板和底板承受。在波紋鋼腹板橋梁中，混凝土頂板和底板基本不承受剪力，轉(zhuǎn)由鋼腹板全部承受。 對比兩者的動力特性發(fā)現(xiàn)，波形鋼腹板橋梁扭轉(zhuǎn)振動的頻率低于混凝土腹板橋梁；增加橫隔板可以提高結(jié)構(gòu)扭轉(zhuǎn)振動的自振頻率，端隔板對波紋鋼腹板橋梁自振特性的影響較大，而跨中橫隔板數(shù)量對波紋鋼腹板橋梁自振特性的影響較小。 在豎向地震輸入的情況下，波紋鋼腹板橋梁和混凝土腹板橋梁的變形形態(tài)很類似，表明波紋鋼腹板橋梁同樣具有很強(qiáng)的抗彎剛度。根據(jù)地震作用橫向輸入的反應(yīng)譜組合變形結(jié)果，發(fā)現(xiàn)波紋鋼腹板橋梁和混凝土腹板橋梁的變形形態(tài)存在較大差異，表明波紋鋼腹板對頂板及底板的約束作用小于混凝土箱梁方案中腹板對頂板和底板的約束作用。在相同的地震波輸入下，波紋鋼腹板橋梁的時程響應(yīng)明顯小于混凝土腹板橋梁。原因在于波紋鋼腹板橋梁縱向剛度較小，地震能量輸入后可以通過變形來消耗，不至于產(chǎn)生過大的內(nèi)力。綜合反應(yīng)譜和時程分析結(jié)果發(fā)現(xiàn)，波紋鋼腹板橋梁的抗震性能更加優(yōu)越。
[Abstract]:The corrugated steel web PC bridge originated in France, because this new type of bridge can completely solve the "web crack" disease of concrete box girder bridge, and has a very high bearing capacity. After it appeared in France in the 1980s, it was soon in Japan and Germany. Korea and other countries have been applied and promoted. China has also carried out a lot of scientific research on the new bridge and successfully constructed dozens of corrugated steel web bridges. So far, many countries have systematically studied the static properties of simply supported corrugated steel web beam structures such as shear resistance, bending resistance, torsion resistance, and stability of steel web plates, but the stress analysis of simply supported and continuous bridges is less. And the dynamic characteristics of corrugated steel web bridges are still in the initial stage. In this paper, based on the example of a simply supported variable continuous corrugated steel web bridge, the static and dynamic characteristics of corrugated steel web bridge and concrete bridge are compared and analyzed by finite element method. The influence of transverse diaphragm on corrugated steel web bridge is studied and the seismic performance of the bridge is compared. The research work in this paper shows that both corrugated steel web bridges and concrete web bridges have strong flexural properties and better shear resistance. The axial stiffness of corrugated steel web plate is very low, and it is not resistant to axial force and bending moment. It can be considered that the normal stress caused by bending moment of corrugated steel web bridge is mainly borne by concrete roof and bottom plate. In corrugated steel web bridge, the concrete roof and bottom are not subjected to shear force, but to steel web. Compared with the dynamic characteristics, the frequency of torsional vibration of corrugated steel web bridge is lower than that of concrete web bridge, and the natural vibration frequency of torsional vibration of structure can be increased by increasing transverse diaphragm. The effect of the end partition on the natural vibration characteristics of corrugated steel web bridges is greater, while the number of cross-section plates has little effect on the natural vibration characteristics of corrugated steel web bridges. In the case of vertical seismic input, the deformation of corrugated steel web bridges and concrete web bridges is very similar, which indicates that corrugated steel web bridges also have strong flexural stiffness. According to the response spectrum combined deformation results of lateral input of seismic action, it is found that the deformation patterns of corrugated steel web bridges and concrete web bridges are quite different. It is shown that the constraint effect of corrugated steel web on roof and bottom is less than that on top and bottom in concrete box girder scheme. Under the same seismic wave input, the time-history response of corrugated steel web bridges is obviously smaller than that of concrete web bridges. The reason is that the longitudinal stiffness of corrugated steel web bridges is small and the seismic energy input can be consumed by deformation so as not to produce excessive internal force. The results of response spectrum and time history analysis show that the seismic performance of corrugated steel web bridges is better than that of corrugated steel web bridges.
【學(xué)位授予單位】：華東交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U441

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鐘豪;徐君蘭;顧安邦;胡旭輝;;波紋鋼腹板PC組合箱梁的抗剪連接鍵分析[J];重慶交通學(xué)院學(xué)報;2006年03期

2 張志彬,陳世鳴;體外預(yù)應(yīng)力鋼-混凝土組合梁混凝土有效翼緣寬度[J];鋼結(jié)構(gòu);2003年06期

3 郭靜;單建;楊曉東;;蒙皮板整體剪切屈曲分析[J];鋼結(jié)構(gòu);2008年08期

4 陳寶春,黃卿維;波形鋼腹板PC箱梁橋應(yīng)用綜述[J];公路;2005年07期

5 李宏江,萬水,葉見曙;波形鋼腹板PC組合箱梁的結(jié)構(gòu)特點(diǎn)[J];公路交通科技;2002年03期

6 劉嵐,崔鐵萬;本谷橋的設(shè)計(jì)與施工──采用懸臂架設(shè)施工法的波紋形鋼腹板預(yù)應(yīng)力混凝土箱梁橋[J];國外橋梁;1999年03期

7 張鋒;徐棟;席廣恒;;彈性階段體外預(yù)應(yīng)力鋼束二次效應(yīng)研究[J];結(jié)構(gòu)工程師;2006年06期

8 張東升;付建新;;波形鋼腹板PC組合箱梁研究現(xiàn)狀[J];江蘇建筑;2012年04期

9 李偉鵬;石明強(qiáng);杜思遠(yuǎn);;橋梁抗震設(shè)計(jì)中地震波的合理選取[J];交通科技;2011年04期

10 吳文清,萬水,葉見曙,方太云;波形鋼腹板組合箱梁剪力滯效應(yīng)的空間有限元分析[J];土木工程學(xué)報;2004年09期

相關(guān)博士學(xué)位論文 前1條

1 任紅偉;波紋鋼腹板預(yù)應(yīng)力混凝土組合箱梁設(shè)計(jì)理論與試驗(yàn)研究[D];北京交通大學(xué);2011年

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