本文關(guān)鍵詞：基于TDAP軟件的既有水管橋抗震性能分析　出處：《天津大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 水管橋 TDAP 動力時程 抗震性能分析 安全性能

【摘要】：隨著人們對建筑物地震災(zāi)害影響因素的分析和研究,世界各國的橋梁抗震理論得到快速的發(fā)展。對于震害較多的日本來說,不斷積累經(jīng)驗(yàn),修訂和完善建筑物的抗震設(shè)計理論,是保護(hù)人民生命財產(chǎn)的重要手段。既有的建筑物是按照原有設(shè)計規(guī)范制定的,隨著規(guī)范的不斷修訂,既有建筑物是否能夠滿足現(xiàn)行規(guī)范的抗震要求已經(jīng)是現(xiàn)在研究的重要課題,本文便是在此背景下,對既有的水管橋是否滿足現(xiàn)行規(guī)范的抗震性能要求進(jìn)行研究。目前雖然對橋梁的抗震性能分析已經(jīng)很多,但是對于具有特殊用途的橋梁的分析則較少。本文針對某已經(jīng)建成的一座用于運(yùn)輸水源的橋梁(水管橋)進(jìn)行抗震性能分析。水管橋的物理性質(zhì)、荷載情況以及地震影響等方面都與傳統(tǒng)橋梁有很大不同。首先建立水管橋的梁單元模型,根據(jù)材料以及位置的不同,分別對梁單元設(shè)置線性和非線性的本構(gòu)關(guān)系;其次將動水壓力轉(zhuǎn)換成附加密度加在相應(yīng)的單元上,由于箱型橋面內(nèi)水的影響,水管橋橋軸向與橋直向振動時的質(zhì)量不同,因此對此橋的橋軸與橋直向分別進(jìn)行模態(tài)分析;然后根據(jù)模態(tài)分析結(jié)果確定主振型、頻率、瑞利阻尼,并對模型橋軸和橋直向進(jìn)行時程分析,重點(diǎn)分析橋面的位移以及橋墩的內(nèi)力;最后根據(jù)時程分析結(jié)果,對原有水管橋的橋墩進(jìn)行安全性能檢查。本文研究成果為今后此類橋梁的設(shè)計及施工提供理論參考。
[Abstract]:With the analysis and study of the influence factors of earthquake disaster in buildings, the seismic theory of bridges in the world has been developed rapidly. For Japan, which has more earthquake damage, it has accumulated more experience. Revising and perfecting the aseismic design theory of buildings is an important means to protect people's life and property. Existing buildings are formulated according to the original design code, with the continuous revision of the code. Whether the existing buildings can meet the seismic requirements of the current code has become an important topic in the present research. This paper is based on this background. Whether the existing aqueduct bridge meets the seismic performance requirements of the current code has been studied. Although the seismic performance of the bridge has been analyzed a lot. However, the analysis of the bridge with special purpose is less. This paper analyzes the seismic behavior of a bridge (water pipe bridge) which has been built for transporting water. The physical properties of the water pipe bridge are also discussed in this paper. The load and earthquake effect are very different from the traditional bridge. Firstly, the beam element model of the water pipe bridge is established, according to the different materials and positions. The linear and nonlinear constitutive relations are established for the beam element respectively. Secondly, the dynamic water pressure is converted into additional density and added to the corresponding unit. Due to the influence of the water in the box deck, the axial vibration of the water pipe bridge is different from that of the straight vibration of the bridge. Therefore, the modal analysis of the bridge axis and the straight direction of the bridge is carried out respectively. Then according to the modal analysis results, the main vibration mode, frequency, Rayleigh damping are determined, and the model bridge axis and bridge straight direction are analyzed in time history, and the displacement of the bridge deck and the internal force of the pier are analyzed emphatically. Finally, according to the results of time-history analysis, the safety performance of the piers of the original watermain bridge is checked. The research results in this paper provide a theoretical reference for the design and construction of this kind of bridges in the future.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U442.55

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