場地地震動及其非線性地震反應和大跨橋梁地震反應分析
[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.
【學位授予單位】:北京交通大學
【學位級別】:博士
【學位授予年份】:2016
【分類號】:TU435;U442.55
【相似文獻】
相關期刊論文 前10條
1 欒茂田,林皋;場地地震反應一維非線性計算模型[J];工程力學;1992年01期
2 陳繼華,陳國興,史國龍;深厚軟弱場地地震反應特性研究[J];防災減災工程學報;2004年02期
3 張海;陽芳;張超;;單層土模型場地地震反應分析中土層參數(shù)隨機性的影響[J];地質(zhì)調(diào)查與研究;2009年01期
4 湯愛平,董瑩,文愛花;工程場地中活動斷層和場地地震安全性評價[J];世界地震工程;1999年01期
5 陳原;;含隨機介質(zhì)工程場地地震反應分析[J];工程建設;2006年04期
6 高艷平;李愷靖;戴軍;;復合地基對場地地震反應的影響[J];巖土力學;2009年S1期
7 李英成;陳清軍;;地震動非平穩(wěn)性對深覆蓋場地地震反應的影響[J];土木工程學報;2010年S1期
8 劉洋;孔戈;周健;;液化場地地震反應的離散元數(shù)值模擬[J];地震工程與工程振動;2011年01期
9 欒茂田;林皋;;場地地震反應非線性分析的有效時域算法[J];大連理工大學學報;1994年02期
10 金星,孔戈,丁海平;水平成層場地地震反應非線性分析[J];地震工程與工程振動;2004年03期
相關會議論文 前6條
1 張海;;土層參數(shù)隨機性在場地地震反應分析中的影響[A];第三屆全國現(xiàn)代結構工程學術研討會論文集[C];2003年
2 白建方;樓夢麟;;考慮局部非線性的復雜場地地震反應分析的約束模態(tài)綜合法[A];第16屆全國結構工程學術會議論文集(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];中國力學學會學術大會'2005論文摘要集(下)[C];2005年
4 蔣溥;徐峰;王啟鳴;;工程場地地震效應研究和區(qū)劃[A];全國首屆工程地質(zhì)學術會議論文選集[C];1979年
5 謝忠球;溫佩琳;丁科;左軍;;橫觀各向同性介質(zhì)中的場地微動譜特性及其應用[A];當代礦山地質(zhì)地球物理新進展[C];2004年
6 陳原;李杰;;非線性隨機介質(zhì)場地的地震反應分析[A];第18屆全國結構工程學術會議論文集第Ⅲ冊[C];2009年
相關博士學位論文 前9條
1 王篤國;場地地震動及其非線性地震反應和大跨橋梁地震反應分析[D];北京交通大學;2016年
2 馮領香;斷層場地對彈性波的散射[D];天津大學;2009年
3 史大成;區(qū)域性場地地震動放大研究及應用[D];中國地震局工程力學研究所;2013年
4 夏江;基于PC集群系統(tǒng)的場地地震反應并行計算研究[D];同濟大學;2007年
5 丁玉琴;場地非線性地震反應分析方法及其應用研究[D];重慶大學;2010年
6 方崇;基于城市建設地基土細觀結構與場地自振特性變異的研究[D];廣西大學;2006年
7 李帆;地鐵隧道群對地震動的影響[D];天津大學;2008年
8 楊宇;場地地震波動模擬中透射邊界穩(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—結構動力相互作用非線性分析及基于SSI效應的結構隔震研究[D];湖南大學;2008年
相關碩士學位論文 前10條
1 陳永新;基于KiK-net強震動記錄對不同土層條件下場地非線性反應的研究[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:2293771
本文鏈接:http://sikaile.net/shoufeilunwen/jckxbs/2293771.html