本文關(guān)鍵詞：波形鋼腹板預(yù)應(yīng)力混凝土組合箱梁橋動力特性及地震響應(yīng)研究　出處：《長安大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 波形鋼腹板 動力特性 反應(yīng)譜分析 非線性時程分析 減隔震設(shè)計 滯回曲線

【摘要】：波形鋼腹板PC組合箱梁橋起源于法國，隨后在法國、日本等許多國家得到了廣泛的研究和應(yīng)用。我國對該類型橋的研究起步較晚，但發(fā)展很快。目前，國內(nèi)外學(xué)者對波形鋼腹板箱梁橋的理論研究主要集中在波形鋼腹板結(jié)構(gòu)的抗彎、抗剪、抗扭和穩(wěn)定等方面，足尺模型試驗(yàn)和有限元數(shù)值分析也大都選擇結(jié)構(gòu)形式簡單的簡支梁或等截面連續(xù)梁，而對大跨徑波形鋼腹板PC組合箱梁的研究較少，特別是關(guān)于動力特性和地震響應(yīng)方面的研究更少。 本文以一座在建的大跨徑波形鋼腹板PC組合連續(xù)箱梁橋?yàn)楸尘�，采用midas Civil建立空間動力計算模型，對其動力性能進(jìn)行研究。主要完成了以下工作： （1）采用桿系模型對全橋進(jìn)行動力特性分析，提取了前十階的固有頻率和振型；采用有限元程序ANSYS和midas Civil分別建立空間實(shí)體—板殼模型和桿系模型，對比分析主梁的動力特性；利用有限元程序ANSYS按照截面靜力抗彎剛度等效的原則建立有限元模型，對波形鋼腹板和混凝土腹板兩種截面形式的動力特性進(jìn)行對比分析。 （2）利用反應(yīng)譜法和時程分析法分別對結(jié)構(gòu)進(jìn)行地震響應(yīng)分析。 （3）采用普通鋼支座和摩擦擺式減隔震支座兩種方案進(jìn)行非線性時程分析，對比分析其動力特性和時程分析計算結(jié)果。通過分析雙向地震作用下和考慮豎向地震作用下減隔震支座滯回曲線的變化，來研究雙向地震耦合作用和豎向地震作用對摩擦擺式減隔震支座地震反應(yīng)和受力性能的影響。 （4）本文在最后對國內(nèi)外一些主要抗震國家和地區(qū)的減隔震設(shè)計規(guī)范進(jìn)行簡要的概述和比較，以更全面的了解橋梁減隔震設(shè)計。
[Abstract]:Web PC composite box girder bridge with corrugated steel originated in France, then in France, Japan and many other countries have been widely studied and applied. Research on this type of bridge in China started late, but the development is very fast. At present, the theory research of box girder bridge with corrugated steel webs of domestic and foreign scholars mainly concentrated in waveform the bending structure of steel webs shear, torsion and stability etc., the full-scale model test and finite element analysis are also mostly structure simple beam or continuous beam, and the large span of corrugated steel webs of the PC composite box girder is less studied, especially on the dynamic characteristics and seismic response of less.
In this paper, a PC based continuous box girder bridge with corrugated steel webs under construction is built as the background. The Midas Civil is used to establish the spatial dynamic calculation model, and its dynamic performance is studied.
(1) using truss model analysis of dynamic characteristics of the whole bridge was extracted, the first ten order natural frequency and vibration mode are established; spatial entity - shell model and frame model using the finite element program ANSYS and Midas Civil, comparative analysis of the dynamic characteristics of the main girder; using the finite element program ANSYS in accordance with the principle of anti static section the equivalent bending stiffness of the finite element model is established, analyzed the dynamic characteristics of corrugated steel webs and concrete web two section forms.
(2) the response spectrum method and time history analysis method are used to analyze the seismic response of the structure respectively.
(3) the nonlinear ordinary steel bearings and friction pendulum isolation bearing two schemes of time history analysis, comparative analysis of calculation results of the dynamic characteristics and process. Through the analysis of bidirectional earthquake action and considering vertical seismic isolation bearing change hysteresis curve, to study the influence of bidirectional coupling and vertical earthquake the earthquake on the friction pendulum bearings reduce seismic response of isolation and stress performance.
(4) in the end, a brief overview and comparison of seismic design codes for some main seismic aseismic countries and regions at home and abroad is made, in order to have a better understanding of bridge seismic isolation design.

【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U441.3;U448.35;U448.213

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