本文關(guān)鍵詞： 橋梁工程 耗能型橋墩 抗震性能試驗 超大跨斜拉橋 結(jié)構(gòu)“保險絲”概念 地震損傷控制　出處：《中國公路學(xué)報》2014年03期 　論文類型：期刊論文

【摘要】：基于結(jié)構(gòu)"保險絲"概念設(shè)計了不同形式橋墩,采用擬靜力試驗和數(shù)值方法研究了此類橋墩的抗震性能及耗能能力,驗證了橋墩纖維模型及等效模型的適用性;將試驗橋墩原型的纖維和等效模型應(yīng)用于一座試設(shè)計的超大跨斜拉橋縱向地震損傷控制分析中,采用彈塑性方法并引入地震損傷指標(biāo)評價了耗能型橋墩對橋梁地震損傷的控制效果,結(jié)合數(shù)值方法和試驗結(jié)果驗證了所提出的地震損傷控制新結(jié)構(gòu)體系的有效性和可行性。結(jié)果表明:附有"保險絲"構(gòu)件的新型耗能橋墩的抗震性能及耗能能力優(yōu)于傳統(tǒng)型獨柱式橋墩;采用新型耗能橋墩的損傷控制策略可有效控制主塔損傷,使其滿足地震損傷控制目標(biāo);橋墩柱間附加的"保險絲"構(gòu)件不僅可提高橋墩剛度,而且對橋墩具有很好的耗能與保護(hù)作用。
[Abstract]:Based on the concept of "fuse", different types of piers are designed. The quasi static test and numerical method are used to study the seismic performance and energy dissipation capacity of this kind of pier, and the applicability of the fiber model and equivalent model of the pier is verified. The fiber and equivalent model of the prototype of experimental pier are applied to the longitudinal seismic damage control analysis of a long-span cable-stayed bridge. In this paper, the elastoplastic method and the seismic damage index are introduced to evaluate the control effect of the energy dissipation pier on the seismic damage of the bridge. Combined with numerical method and experimental results, the effectiveness and feasibility of the proposed new structural system for seismic damage control are verified. The results show that the seismic performance and energy dissipation capacity of the new energy dissipation pier with "fuse" members are excellent. Traditional single-column pier; The damage control strategy of the new energy dissipation pier can effectively control the damage of the main tower and make it meet the goal of seismic damage control, and the additional "fuse" component between the pillars of the pier can not only increase the stiffness of the pier, but also improve the stability of the bridge pier. And the bridge piers have good energy consumption and protection.
【作者單位】： 同濟(jì)大學(xué)土木工程防災(zāi)國家重點實驗室;寧波大學(xué)建筑工程與環(huán)境學(xué)院;
【基金】：國家自然科學(xué)基金項目(90915011,91315301)
【分類號】：U443.22;U442.55

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 張喜剛;裴岷山;袁洪;徐利平;朱斌;;蘇通大橋主橋結(jié)構(gòu)體系研究[J];中國工程科學(xué);2009年03期

2 陳永祁;馬良U，

本文編號：1494525