本文選題：外套結(jié)構(gòu)加固 + 層間隔震體系　； 參考：《哈爾濱工業(yè)大學(xué)》2012年碩士論文

【摘要】：隨著上世紀(jì)興建的大批建筑進(jìn)入老齡期，結(jié)構(gòu)抗震加固成為近年來的熱點(diǎn)問題。對(duì)于需要加層改造的舊結(jié)構(gòu)，外套結(jié)構(gòu)增層加固改造方案是工程界逐漸興起的一種加固手段。通過外套結(jié)構(gòu)與舊結(jié)構(gòu)的協(xié)同受力提高結(jié)構(gòu)的抗震能力，還可以利用加層結(jié)構(gòu)及層間隔震技術(shù)形成調(diào)諧質(zhì)量阻尼系統(tǒng)，進(jìn)一步改善結(jié)構(gòu)的抗震性能。但外套結(jié)構(gòu)與原結(jié)構(gòu)協(xié)同受力的機(jī)理較為復(fù)雜，層間減震體系也沒有足夠的研究，更沒有相應(yīng)國家規(guī)范的支持，給加固改造工作帶來很大困難。因此，本文著重通過振動(dòng)臺(tái)試驗(yàn)研究既有剪力墻結(jié)構(gòu)增層加固改造后的抗震性能，研究工作主要包括以下幾個(gè)方面： （1）完成對(duì)一棟十四層剪力墻結(jié)構(gòu)的1/6縮尺模型外套增層隔震加固后的振動(dòng)臺(tái)試驗(yàn)，對(duì)比研究了隔震、非隔震結(jié)構(gòu)在不同烈度地震作用下的抗震性能。試驗(yàn)結(jié)果表明：結(jié)構(gòu)在外套增層隔震加固改造后，整體抗震性能良好，在經(jīng)受8度罕遇地震下沒有發(fā)生嚴(yán)重破壞；通過拉結(jié)筋連接，外套結(jié)構(gòu)與原結(jié)構(gòu)能很好協(xié)同工作；增層隔震方法能夠較好地控制下部結(jié)構(gòu)的地震響應(yīng)，同時(shí)沒有明顯放大上部結(jié)構(gòu)的地震響應(yīng)。 （2）通過ABAQUS軟件對(duì)振動(dòng)臺(tái)試驗(yàn)進(jìn)行數(shù)值仿真分析以進(jìn)一步探討增層隔震加固結(jié)構(gòu)的抗震性能。研究結(jié)果表明：數(shù)值模擬結(jié)果與試驗(yàn)結(jié)果吻合良好，能夠較好地把握結(jié)構(gòu)地震響應(yīng)規(guī)律；外套結(jié)構(gòu)墻體承擔(dān)較大的傾覆力矩，，但與基礎(chǔ)連接較為薄弱；雖然結(jié)構(gòu)底部樓層的有害層間位移角較大，但仍滿足規(guī)范限值要求；整體結(jié)構(gòu)混凝土損傷主要發(fā)生在結(jié)構(gòu)底部以及開洞不連續(xù)墻片轉(zhuǎn)換層處。
[Abstract]:With a large number of buildings being built in the last century, seismic reinforcement of structures has become a hot issue in recent years. For the old structures which need to be rebuilt with additional layers, the reinforcement and reconstruction scheme of the jacket structure is a kind of strengthening means which is gradually rising in the engineering field. Through the synergistic force between the outer structure and the old structure, the aseismic capacity of the structure can be improved, and the tuned mass damping system can be formed by adding the story structure and the technique of isolation between the layers, which can further improve the seismic performance of the structure. However, the mechanism of synergistic force between the jacket structure and the original structure is more complex, and there is not enough research on the interstory seismic absorption system, let alone the support of the corresponding national code, which brings great difficulties to the reinforcement and reconstruction work. Therefore, this paper focuses on the seismic performance of the existing shear wall structure after strengthening and reforming by shaking table test. The research work mainly includes the following aspects: (1) the shaking table test of a 14 story shear wall structure with 1 / 6 scale model overcoat strengthened by isolation is completed, and the vibration isolation is compared and studied. Seismic behavior of non-isolated structures under different intensity earthquakes. The test results show that the whole structure has good seismic performance after strengthening and retrofitting by isolation and isolation of the coat, and there is no serious damage under the rare earthquake of 8 degrees, and the overcoat structure and the original structure can work together well through the connection of the tensile reinforcement and the original structure. The seismic response of the substructure can be well controlled by the method of increasing seismic isolation. At the same time, the seismic response of superstructure is not enlarged obviously. (2) numerical simulation analysis of shaking table test is carried out by Abaqus software to further discuss the seismic performance of the structure strengthened by adding story isolation. The results show that the numerical simulation results are in good agreement with the experimental results, and the seismic response law of the structure can be well grasped, while the overburden wall bears a large overturning moment, but the connection with the foundation is relatively weak. Although the displacement angle between the harmful floors of the bottom floor of the structure is large, it still meets the requirements of the code limit, and the damage of the whole structure concrete mainly occurs at the bottom of the structure and the transition floor of the discontinuous wall with holes.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TU352.1

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