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  本文選題：高墩大跨連續(xù)剛構橋 + 地震反應�。� 參考：《哈爾濱工業(yè)大學》2015年碩士論文

【摘要】：高墩大跨連續(xù)剛構橋在我國西部山區(qū)的公路和鐵路中運用得越來越多,但是公路和鐵路橋梁抗震設計規(guī)范只是對于大跨橋梁籠統(tǒng)地給出了一些抗震設計建議。在實際設計高墩大跨連續(xù)剛構橋還是需對其進行專門的抗震設計,因此本文對高墩大跨連續(xù)剛構橋的抗震設計研究具有很大的應用價值。本文基于橋梁有限元分析軟件Midas/Civil,對某高墩大跨連續(xù)剛構橋的高墩墩身設計開展了研究:基于截面分析法,采用M-φ曲線得到高墩墩身設計時擬出的雙薄壁墩、單薄壁墩和組合墩的墩底截面的性能,對它們的延性性能進行了對比分析。分別對這三種墩身形式的高墩大跨連續(xù)剛構橋進行了在順橋向和橫橋向的多遇地震作用下的線性時程分析,在罕遇地震作用下的非線性時程分析,分別得出它們的動力反應情況,對比反應參數(shù),得出動力反應最理想的墩身形式。采用粘滯阻尼器對高墩大跨連續(xù)剛構橋的縱向減震控制開展了研究,對比分析了滯阻尼系數(shù)和速度指數(shù)不同的16組粘滯阻尼器的減震效果,優(yōu)選出減震效果最好的粘滯阻尼器。采用調諧質量阻尼器對高墩大跨連續(xù)剛構橋的橫向減震控制進行了研究,對比分析9種不同質量的調諧質量阻尼器,得到了其中減震效果最好的調諧質量阻尼器。采用順橋向不同的視波速的地震波研究了行波效應對高墩大跨連續(xù)剛構橋的動力響應的影響。
[Abstract]:Continuous rigid frame bridges with high piers and long spans are used more and more in highways and railways in the western mountainous areas of China, but the seismic design code for highway and railway bridges is only a general proposal for seismic design of long-span bridges. In the practical design of long-span continuous rigid frame bridge with high piers, it is still necessary to carry out a special seismic design, so this paper has great application value to the seismic design of long-span continuous rigid frame bridge with high pier. In this paper, based on the finite element analysis software Midas / Civil, the design of the pier of a long-span continuous rigid frame bridge with high piers is studied. Based on the section analysis method, the double thin-walled piers are obtained by using M- 蠁 curves. The ductility of single thin-walled pier and composite pier is compared and analyzed. The linear time-history analysis and nonlinear time-history analysis of these three types of long-span continuous rigid frame bridges with high piers and long spans are carried out under the frequent earthquake action in the direction of the bridge and the direction of the transverse bridge, respectively, and the nonlinear time-history analysis under the action of rare earthquakes. Their dynamic response was obtained respectively, and the optimal pier form of dynamic response was obtained by comparing the reaction parameters. The longitudinal damping control of long-span continuous rigid frame bridges with high piers and long spans is studied by using viscous dampers. The damping effects of 16 groups of viscous dampers with different hysteretic damping coefficients and velocity indices are compared and analyzed, and the best viscous dampers are selected. The control of lateral vibration absorption of long-span continuous rigid frame bridges with high piers is studied by using tuned mass dampers. Nine kinds of tuned mass dampers with different masses are compared and analyzed, and the tuned mass dampers with the best damping effect are obtained. The influence of traveling wave effect on the dynamic response of long-span continuous rigid frame bridge with high piers is studied by using seismic waves with different apparent wave velocities along the bridge.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U442.55;U448.23

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本文編號：2060466