發(fā)布時(shí)間：2018-06-30 03:31

  本文選題：砌體結(jié)構(gòu) + 預(yù)制鋼筋混凝土墻板　； 參考：《工程力學(xué)》2014年08期

【摘要】：基于裝配式技術(shù)的砌體結(jié)構(gòu)加固方案可以有效提高結(jié)構(gòu)的抗震能力。采用預(yù)制鋼筋混凝土墻板對原有的砌體墻片進(jìn)行雙面外貼加固,并用銷鍵、灌漿、后澆帶等連接方式保證砌體墻片與預(yù)制鋼筋混凝土墻板的共同工作。該文通過非線性有限元模型分析了未加固砌體及加固砌體結(jié)構(gòu)在循環(huán)往復(fù)加載下的力學(xué)行為,探討混凝土墻板和砌體磚墻之間的傳力途徑,驗(yàn)證加固方法和三種連接措施的有效性。分析證明:采用預(yù)制鋼筋混凝土貼墻墻板的加固方案可以顯著提高砌體結(jié)構(gòu)的抗震性能,強(qiáng)度提高3倍~4倍,剛度提高2倍~3倍,滿足現(xiàn)行抗震規(guī)范的要求。三種連接方式中,后澆帶最有效,在彈性階段傳遞了70%的荷載,在后期傳遞了80%的荷載。
[Abstract]:The reinforcement scheme of masonry structure based on assembly technology can effectively improve the seismic capacity of the structure. The prefabricated reinforced concrete wall slabs are used to reinforce the original masonry wall sheets on both sides, and the joint methods such as pin key, grouting and post-pouring belt are used to ensure the joint work between the masonry walls and the precast reinforced concrete wall slabs. In this paper, the mechanical behavior of unreinforced masonry and reinforced masonry structures under cyclic loading is analyzed by nonlinear finite element model, and the transmission of force between concrete wall slabs and masonry walls is discussed. Verify the effectiveness of the reinforcement method and the three joint measures. The analysis shows that the reinforcement scheme of precast reinforced concrete wall slab can significantly improve the seismic performance of masonry structure, the strength of masonry structure can be increased by 3 times and the stiffness of masonry structure can be increased by 3 times and 3 times, which can meet the requirements of the current seismic code. Among the three connection modes, the post-pouring belt is the most effective, which transfers 70% load in elastic stage and 80% load in later stage.
【作者單位】： 中國地震局工程力學(xué)研究所 中國地震局地震工程與工程震動(dòng)部門重點(diǎn)實(shí)驗(yàn)室;北京市建筑設(shè)計(jì)研究院有限公司;
【基金】：地震行業(yè)科研專項(xiàng)經(jīng)費(fèi)資金項(xiàng)目(201108006) 中央級公益性科研院所基本科研業(yè)務(wù)專項(xiàng)項(xiàng)目(2013A01)
【分類號】：TU364

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