采用新型輔助墩的超大跨斜拉橋順橋向損傷控制新體系研究
發(fā)布時間：2018-10-11 08:28
【摘要】：以一座試設計斜拉橋為例,采用動力彈塑性時程分析并以Park損傷指數、位移作為評價指標,研究采用輔助墩的斜拉橋順橋向結構體系的抗震性能,并探討不同型式橋墩對其抗震性能和損傷控制效果的影響。結果表明:采用新型輔助墩的超大跨斜拉橋順橋向結構體系具有更好的抗震性能和損傷控制效果,且具有分層耗能機制,即附加的耗能構件可有效減緩輔助墩的地震損傷,輔助墩又可有效減緩主塔的地震損傷;附有剪切連桿的新型橋墩的抗震性能優(yōu)于傳統型橋墩,剪切連桿不僅可提高橋墩的剛度,而且可有效減小其地震損傷,起附加耗能作用。
[Abstract]:Taking an experimental cable-stayed bridge as an example, using dynamic elastic-plastic time-history analysis, Park damage index and displacement as the evaluation index, the seismic behavior of a cable-stayed bridge with auxiliary piers is studied. The effects of different types of piers on seismic performance and damage control are discussed. The results show that the long-span cable-stayed bridge system with new auxiliary piers has better seismic performance and damage control effect, and has a layered energy dissipation mechanism, that is, additional energy-dissipation components can effectively reduce the seismic damage of auxiliary piers. The seismic performance of the new pier with shear connecting rod is better than that of the traditional pier. The shear connecting rod can not only improve the stiffness of pier, but also reduce the seismic damage effectively and play the role of additional energy dissipation.
【作者單位】： 寧波大學;同濟大學土木工程防災國家重點實驗室;
【基金】：國家自然科學基金(91315301) 寧波大學人才工程項目(ZX2014000207)
【分類號】：U442.55;U448.27
[Abstract]:Taking an experimental cable-stayed bridge as an example, using dynamic elastic-plastic time-history analysis, Park damage index and displacement as the evaluation index, the seismic behavior of a cable-stayed bridge with auxiliary piers is studied. The effects of different types of piers on seismic performance and damage control are discussed. The results show that the long-span cable-stayed bridge system with new auxiliary piers has better seismic performance and damage control effect, and has a layered energy dissipation mechanism, that is, additional energy-dissipation components can effectively reduce the seismic damage of auxiliary piers. The seismic performance of the new pier with shear connecting rod is better than that of the traditional pier. The shear connecting rod can not only improve the stiffness of pier, but also reduce the seismic damage effectively and play the role of additional energy dissipation.
【作者單位】： 寧波大學;同濟大學土木工程防災國家重點實驗室;
【基金】：國家自然科學基金(91315301) 寧波大學人才工程項目(ZX2014000207)
【分類號】：U442.55;U448.27
【參考文獻】
相關期刊論文 前4條
1 陳永祁;馬良U，
本文編號：2263520
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