【摘要】：大跨結(jié)構(gòu)的地震響應(yīng)是一個(gè)復(fù)雜的科學(xué)問題,它涉及場地輸入地震動(dòng)、場地地震反應(yīng)分析和結(jié)構(gòu)地震反應(yīng)分析,本文圍繞這3個(gè)環(huán)節(jié)開展了研究工作。這一研究對(duì)于建立簡單、實(shí)用的場地地震動(dòng)輸入、場地地震反應(yīng)分析方法和結(jié)構(gòu)地震反應(yīng)分析方法具有一定的參考價(jià)值。本文針對(duì)上述課題進(jìn)行了系統(tǒng)研究,取得了以下研究成果：1.基于幾何學(xué)仿射原理,將地震動(dòng)衰減橢圓與潛在震源區(qū)凸多邊形相交面積的計(jì)算算法轉(zhuǎn)化為易于程序化編程的圓與凸多邊形相交面積的計(jì)算算法,在保證精度的前提下大幅減少了編程工作量,提高了計(jì)算效率,改進(jìn)了地震危險(xiǎn)性分析計(jì)算程序,并給出了某場點(diǎn)的地震危險(xiǎn)性分析的計(jì)算實(shí)例,為場地地震反應(yīng)分析提供了高效、實(shí)用的地震動(dòng)輸入。2.針對(duì)傳統(tǒng)一維等效線性化方法在強(qiáng)地震動(dòng)作用下對(duì)厚軟場地進(jìn)行土層反應(yīng)分析計(jì)算時(shí)高頻響應(yīng)被低估、峰值加速度偏低的缺點(diǎn),提出用移動(dòng)平均線來確定應(yīng)變譜,并用Parzen's譜窗平滑應(yīng)變譜曲線,然后引入彈性閥值理論,建立了考慮彈性閥值理論的頻率相關(guān)等效線性化方法。通過與具有實(shí)測強(qiáng)震記錄的厚軟場地進(jìn)行對(duì)比分析,結(jié)果表明此方法比傳統(tǒng)一維等效線性化方法能更有效的模擬地震波高頻成分在厚軟覆蓋層場地中的傳播規(guī)律,同時(shí)揭示了傳統(tǒng)一維等效線性化方法在分析厚軟場地土層地震反應(yīng)時(shí)存在較大的誤差,為確定此類場地設(shè)計(jì)地震動(dòng)參數(shù)提供了依據(jù)。3.基于地震波斜入射下成層彈性半空間頻域求解方法和等效線性化理論,推導(dǎo)了地震波斜入射情況下二維等效剪應(yīng)變求解公式,提出了一種地震波斜入射時(shí)二維水平成層介質(zhì)的非線性地震反應(yīng)分析方法。它將一維土層地震反應(yīng)分析等效線性化方法拓展到二維土層地震反應(yīng)分析中,建立了二維土層地震反應(yīng)分析的等效線性化方法。對(duì)某二維水平成層場地地震波斜入射(SH波、SV波和P波)時(shí)的非線性地震反應(yīng)進(jìn)行了計(jì)算分析,揭示了成層介質(zhì)場地地震反應(yīng)隨入射角變化而變化的規(guī)律。4.基于地震波斜入射下二維等效線性化方法和多源疊加粘彈性人工邊界理論,建立了能同時(shí)考慮場地非線性、地形效應(yīng)和土-結(jié)構(gòu)動(dòng)力相互作用的大跨結(jié)構(gòu)動(dòng)力反應(yīng)分析計(jì)算方法。5.用上述建立的地震反應(yīng)分析方法,利用ANSYS有限元軟件對(duì)某連續(xù)剛構(gòu)橋進(jìn)行了SV波和P波斜入射下動(dòng)力反應(yīng)的計(jì)算分析。計(jì)算了考慮場地非線性情況下不同入射角、不同地形和不同場地剛度工況下連續(xù)剛構(gòu)橋的動(dòng)力響應(yīng),總結(jié)了連續(xù)剛構(gòu)橋的動(dòng)力響應(yīng)隨上述因素變化而變化的規(guī)律；同時(shí)計(jì)算了不考慮場地非線性情況下連續(xù)剛構(gòu)橋的動(dòng)力響應(yīng),并和考慮場地場地非線性的情況進(jìn)行了對(duì)比分析。
[Abstract]:The seismic response of long-span structures is a complex scientific problem, which involves ground motion input, site seismic response analysis and structural seismic response analysis. This study has certain reference value for the establishment of simple and practical ground motion input, site seismic response analysis method and structural seismic response analysis method. This paper has carried on the systematic research to the above topic, obtained the following research results: 1. Based on the geometric affine principle, the algorithm for calculating the intersection area between the attenuated ellipse of ground motion and the convex polygon in the potential source region is transformed into an algorithm for calculating the intersecting area between the circle and the convex polygon, which is easy to program. On the premise of ensuring precision, the programming workload is greatly reduced, the calculation efficiency is improved, the calculation program of seismic hazard analysis is improved, and the calculation example of seismic hazard analysis at a certain site is given. For site seismic response analysis to provide an efficient, practical ground motion input. 2. In view of the shortcoming of the traditional one-dimensional equivalent linearization method that the high frequency response is underestimated and the peak acceleration is low, the moving average line is used to determine the strain spectrum. The strain spectrum curve is smoothed by the Parzen's window, and then the elastic threshold theory is introduced to establish the equivalent linearization method of frequency correlation considering the elastic threshold theory. The results show that the method is more effective than the traditional one-dimensional equivalent linearization method in simulating the propagation law of high frequency components of seismic wave in thick soft overburden ground by comparing with the thick soft site with measured strong earthquake records, and the results show that the proposed method is more effective than the traditional one-dimensional equivalent linearization method. At the same time, it is revealed that the traditional one-dimensional equivalent linearization method has a large error in analyzing the seismic response of thick and soft soil layers, which provides a basis for determining the design ground motion parameters of this kind of site. Based on the frequency-domain solution method and equivalent linearization theory of stratified elastic half-space under oblique incidence of seismic waves, a two-dimensional equivalent shear strain solution formula for oblique incidence of seismic waves is derived. A nonlinear seismic response analysis method for two-dimensional horizontal stratified media with oblique incidence of seismic waves is presented. The equivalent linearization method of seismic response analysis of one-dimensional soil layer is extended to the seismic response analysis of two-dimensional soil layer, and the equivalent linearization method of seismic response analysis of two-dimensional soil layer is established. The nonlinear seismic response of a two-dimensional horizontal stratified ground seismic wave with oblique incidence (SH wave, SV wave and P wave) is calculated and analyzed, and the variation of seismic response with incident angle in stratified medium is revealed. 4. Based on the two-dimension equivalent linearization method for oblique incidence of seismic waves and the theory of multi-source superimposed viscoelastic artificial boundary, the nonlinear field can be considered at the same time. Analysis and calculation method for dynamic response of large span structures with topographic effect and soil-structure dynamic interaction. 5. The dynamic response of a continuous rigid frame bridge under the oblique incidence of SV wave and P wave is calculated and analyzed by ANSYS finite element software using the seismic response analysis method established above. The dynamic responses of continuous rigid frame bridges with different incident angles, different terrain and different site stiffness are calculated, and the dynamic responses of continuous rigid frame bridges are summarized. At the same time, the dynamic response of continuous rigid frame bridge without considering site nonlinearity is calculated and compared with that of considering site nonlinearity.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：TU435;U442.55

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 欒茂田,林皋;場地地震反應(yīng)一維非線性計(jì)算模型[J];工程力學(xué);1992年01期

2 陳繼華,陳國興,史國龍;深厚軟弱場地地震反應(yīng)特性研究[J];防災(zāi)減災(zāi)工程學(xué)報(bào);2004年02期

3 張海;陽芳;張超;;單層土模型場地地震反應(yīng)分析中土層參數(shù)隨機(jī)性的影響[J];地質(zhì)調(diào)查與研究;2009年01期

4 湯愛平,董瑩,文愛花;工程場地中活動(dòng)斷層和場地地震安全性評(píng)價(jià)[J];世界地震工程;1999年01期

5 陳原;;含隨機(jī)介質(zhì)工程場地地震反應(yīng)分析[J];工程建設(shè);2006年04期

6 高艷平;李愷靖;戴軍;;復(fù)合地基對(duì)場地地震反應(yīng)的影響[J];巖土力學(xué);2009年S1期

7 李英成;陳清軍;;地震動(dòng)非平穩(wěn)性對(duì)深覆蓋場地地震反應(yīng)的影響[J];土木工程學(xué)報(bào);2010年S1期

8 劉洋;孔戈;周健;;液化場地地震反應(yīng)的離散元數(shù)值模擬[J];地震工程與工程振動(dòng);2011年01期

9 欒茂田;林皋;;場地地震反應(yīng)非線性分析的有效時(shí)域算法[J];大連理工大學(xué)學(xué)報(bào);1994年02期

10 金星,孔戈,丁海平;水平成層場地地震反應(yīng)非線性分析[J];地震工程與工程振動(dòng);2004年03期

相關(guān)會(huì)議論文 前6條

1 張海;;土層參數(shù)隨機(jī)性在場地地震反應(yīng)分析中的影響[A];第三屆全國現(xiàn)代結(jié)構(gòu)工程學(xué)術(shù)研討會(huì)論文集[C];2003年

2 白建方;樓夢麟;;考慮局部非線性的復(fù)雜場地地震反應(yīng)分析的約束模態(tài)綜合法[A];第16屆全國結(jié)構(gòu)工程學(xué)術(shù)會(huì)議論文集（第Ⅲ冊）[C];2007年

3 楊佑發(fā);王一功;;傾斜基巖上的土-框架共同作用研究[A];中國力學(xué)學(xué)會(huì)學(xué)術(shù)大會(huì)'2005論文摘要集（下）[C];2005年

4 蔣溥;徐峰;王啟鳴;;工程場地地震效應(yīng)研究和區(qū)劃[A];全國首屆工程地質(zhì)學(xué)術(shù)會(huì)議論文選集[C];1979年

5 謝忠球;溫佩琳;丁科;左軍;;橫觀各向同性介質(zhì)中的場地微動(dòng)譜特性及其應(yīng)用[A];當(dāng)代礦山地質(zhì)地球物理新進(jìn)展[C];2004年

6 陳原;李杰;;非線性隨機(jī)介質(zhì)場地的地震反應(yīng)分析[A];第18屆全國結(jié)構(gòu)工程學(xué)術(shù)會(huì)議論文集第Ⅲ冊[C];2009年

相關(guān)博士學(xué)位論文 前9條

1 王篤國;場地地震動(dòng)及其非線性地震反應(yīng)和大跨橋梁地震反應(yīng)分析[D];北京交通大學(xué);2016年

2 馮領(lǐng)香;斷層場地對(duì)彈性波的散射[D];天津大學(xué);2009年

3 史大成;區(qū)域性場地地震動(dòng)放大研究及應(yīng)用[D];中國地震局工程力學(xué)研究所;2013年

4 夏江;基于PC集群系統(tǒng)的場地地震反應(yīng)并行計(jì)算研究[D];同濟(jì)大學(xué);2007年

5 丁玉琴;場地非線性地震反應(yīng)分析方法及其應(yīng)用研究[D];重慶大學(xué);2010年

6 方崇;基于城市建設(shè)地基土細(xì)觀結(jié)構(gòu)與場地自振特性變異的研究[D];廣西大學(xué);2006年

7 李帆;地鐵隧道群對(duì)地震動(dòng)的影響[D];天津大學(xué);2008年

8 楊宇;場地地震波動(dòng)模擬中透射邊界穩(wěn)定性問題研究[D];中國地震局地球物理研究所;2011年

9 劉方成;土—結(jié)構(gòu)動(dòng)力相互作用非線性分析及基于SSI效應(yīng)的結(jié)構(gòu)隔震研究[D];湖南大學(xué);2008年

相關(guān)碩士學(xué)位論文 前10條

1 陳永新;基于KiK-net強(qiáng)震動(dòng)記錄對(duì)不同土層條件下場地非線性反應(yīng)的研究[D];中國地震局地球物理研究所;2015年

2 李敏;考慮場地地震動(dòng)影響的場地分類方法研究[D];中國地震局地球物理研究所;2015年

3 阮t，

本文編號(hào)：2293771