本文選題：內(nèi)嵌鋼板　切入點：裝配式剪力墻　出處：《天津大學》2014年碩士論文　論文類型：學位論文

【摘要】：基于目前裝配式剪力墻結(jié)構(gòu)中存在的墻體構(gòu)件自重大的問題,提出一種新型預制剪力墻構(gòu)件:將預制剪力墻設(shè)計成開洞墻體,洞口內(nèi)嵌鋼板,旨在通過開洞減輕構(gòu)件自重,降低構(gòu)件吊裝和運輸壓力,同時通過鋼板屈曲變形提高構(gòu)件的延性和耗能能力。本文通過構(gòu)件和結(jié)構(gòu)兩個層面進行分析研究:1)通過對單層開洞內(nèi)嵌鋼板剪力墻結(jié)構(gòu)構(gòu)件進行擬靜力往復加載分析,得出構(gòu)件的滯回曲線,通過試件的恢復力曲線判定構(gòu)件的承載力和耗能能力;進行ABAQUS單向推覆分析,研究該新型結(jié)構(gòu)構(gòu)件抗震性能的影響因素,并探討不同參數(shù)下構(gòu)件的破壞機制;2)依托于一棟裝配式剪力墻結(jié)構(gòu)實際工程,提取其中一片剪力墻深入研究,通過對由普通墻構(gòu)件和本文提出的新型預制墻體構(gòu)件組成的兩種結(jié)構(gòu)體系進行罕遇地震下彈塑性時程分析,進一步比較整體結(jié)構(gòu)的變形和耗能能力。通過以上對比分析,可得到以下結(jié)果:1)通過開洞能夠降低預制墻體構(gòu)件自重,提高構(gòu)件的延性,但構(gòu)件本身的剛度和承載力有較大的降低;通過洞口內(nèi)嵌鋼板能夠較好的恢復結(jié)構(gòu)的整體剛度和承載能力,同時相對普通墻延性和耗能能力也有較大的提高;2)通過參數(shù)分析,可以得出內(nèi)嵌鋼板的高厚比、跨高比以及周邊墻肢的剛度是影響開洞內(nèi)嵌鋼板裝配式剪力墻結(jié)構(gòu)抗震性能的重要參數(shù)。在本文研究參數(shù)范圍內(nèi),當鋼板高厚比小于150時,結(jié)構(gòu)的破壞由整體破壞向單個墻肢局部破壞轉(zhuǎn)移,鋼板屈曲后性能發(fā)揮不明顯,因此鋼板厚度不宜過大,建議鋼板高厚比取值不小于150;3)對于整體結(jié)構(gòu)分析可得出,開洞后加入薄鋼板能夠延長結(jié)構(gòu)的周期,降低結(jié)構(gòu)的地震反應,同時提高結(jié)構(gòu)的變形能力。本研究首次提出新型開洞內(nèi)嵌鋼板裝配式剪力墻結(jié)構(gòu)形式,國內(nèi)外未見相關(guān)報道和研究,同時通過構(gòu)件和結(jié)構(gòu)層面的對比分析,對提出的新型裝配式剪力墻結(jié)構(gòu)進行了系統(tǒng)的分析驗證,得出開洞內(nèi)嵌鋼板裝配式剪力墻結(jié)構(gòu)是一種具有優(yōu)良抗震性能的結(jié)構(gòu)形式。
[Abstract]:Based on the self-important problem of the wall members in the present fabricated shear wall structure, a new type of prefabricated shear wall member is proposed: the precast shear wall is designed as the opening wall and the steel plate embedded in the hole, in order to reduce the weight of the member through the opening. Reduce the lifting and transportation pressure, At the same time, the ductility and energy dissipation capacity are improved by buckling deformation of steel plate. The hysteretic curve of the member is obtained, the bearing capacity and energy dissipation capacity of the member are determined by the restoring force curve of the specimen, and the influencing factors of the seismic behavior of the new structural member are studied by ABAQUS one-way push-over analysis. The failure mechanism of components under different parameters is also discussed, which is based on a practical engineering of an assembled shear wall structure, and one of the shear walls is extracted for further study. Through the elastoplastic time history analysis of two kinds of structural systems, which are composed of ordinary wall members and new precast wall members proposed in this paper, the deformation and energy dissipation capacity of the whole structure is further compared under rare earthquakes. The following results can be obtained: (1) the weight of precast wall members can be reduced and the ductility of precast wall members can be improved by opening holes, but the stiffness and bearing capacity of the members themselves are greatly reduced; Through the hole inlay steel plate can better restore the overall stiffness and bearing capacity of the structure, at the same time compared with the ordinary wall ductility and energy dissipation capacity has been greatly improved) through the parameter analysis, we can get the ratio of height and thickness of the embedded steel plate. The ratio of span to height and the stiffness of peripheral wall limb are important parameters that affect the seismic performance of steel plate embedded shear wall structure in the hole. In the range of parameters studied in this paper, when the ratio of height to thickness of steel plate is less than 150, The damage of the structure is transferred from the whole failure to the local failure of a single wall limb, and the performance of the steel plate after buckling is not obvious, so the thickness of the steel plate should not be too large, and it is suggested that the ratio of height to thickness of the steel plate should be not less than 150 ~ 3) the analysis of the whole structure can be obtained. The period of the structure can be prolonged, the seismic response of the structure can be reduced and the deformation ability of the structure can be improved by adding thin steel plate after opening. In this study, a new type of steel plate embedded prefabricated shear wall structure is proposed for the first time. No related reports and studies have been reported at home and abroad. At the same time, through the comparative analysis of components and structures, the proposed new prefabricated shear wall structure has been systematically analyzed and verified. It is concluded that the prefabricated shear wall structure with steel plate embedded in the hole is a kind of structure with excellent seismic performance.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU398.2;TU352.11

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