發(fā)布時間：2018-03-08 17:43

  本文選題：全裝配式RC框架-剪力墻結(jié)構(gòu)　切入點：低周反復(fù)加載試驗　出處：《建筑結(jié)構(gòu)學(xué)報》2017年06期 　論文類型：期刊論文

【摘要】：為研究采用預(yù)制剪力墻、預(yù)制框架的全裝配式RC框架-剪力墻結(jié)構(gòu)的抗震性能,對2榀1/2比例兩層兩跨RC框架-剪力墻結(jié)構(gòu)子結(jié)構(gòu)模型試件(其中1榀為全裝配試件PCFW2,1榀為全現(xiàn)澆對比試件RCFW)進行了低周反復(fù)荷載試驗,分析了結(jié)構(gòu)的破壞機制、破壞形態(tài)、塑性鉸開展、滯回性能、位移延性、剛度退化和耗能能力等。結(jié)果表明:全裝配式試件PCFW2與全現(xiàn)澆對比試件RCFW的開裂荷載相當(dāng),破壞過程和最終破壞形態(tài)基本相同;灌漿套筒、約束漿錨可有效傳遞鋼筋應(yīng)力;全裝配式試件PCFW2整體性良好,其屈服荷載、峰值荷載、極限荷載均略大于全現(xiàn)澆對比試件RCFW的相應(yīng)值,但相差不超過13.0%,位移延性系數(shù)較全現(xiàn)澆試件RCFW的略低。在大部分受力階段,試件PCFW2耗能優(yōu)于試件RCFW。建議全裝配式框架-剪力墻結(jié)構(gòu)中剪力墻的邊柱(或邊緣)縱筋,采用灌漿套筒連接,其余部分采用約束漿錨搭接連接,而框架濕節(jié)點處的后澆混凝土采用微膨脹混凝土。
[Abstract]:In order to study the seismic behavior of fully assembled RC frame-shear wall structures with precast shear walls and prefabricated frames, The low cycle repeated loading tests were carried out on two substructure model specimens of 1/2 scale two-story RC frame-shear wall structures (one of which was a full-assembly specimen PCFW2or, one of which was a full-cast-in-situ contrast specimen). The failure mechanism and failure mode of the structure were analyzed. Plastic hinge development, hysteretic performance, displacement ductility, stiffness degradation and energy dissipation capacity. The results show that the cracking load of fully assembled specimen PCFW2 is similar to that of full cast-in-place contrast specimen RCFW, and the failure process and ultimate failure form are basically the same. The restrained grouting anchor can effectively transfer the stress of steel bar, and the PCFW2 of fully assembled specimen has good integrity, and its yield load, peak load and ultimate load are slightly larger than the corresponding value of RCFW of the whole cast-in-place contrast specimen. But the difference is not more than 13.0, the displacement ductility coefficient is slightly lower than that of the full-cast specimen RCFW. In most stress stages, the PCFW2 energy consumption of the specimen is better than that of the specimen RCFW. It is suggested that the side column (or edge) longitudinal reinforcement of the shear wall in the fully assembled frame-shear wall structure is better than that of the full-assembly frame-shear wall structure. The grouting sleeve is used to connect, the rest is connected by restrained grouting anchor, while the post-pouring concrete at the wet joint of the frame is made of micro-expansive concrete.
【作者單位】： 東南大學(xué)混凝土及預(yù)應(yīng)力混凝土結(jié)構(gòu)教育部重點實驗室;中國十七冶集團有限公司;
【基金】：國家自然科學(xué)基金項目(51278118) 中國中冶“三五”重大科技專項(中冶科[2013]1號)
【分類號】：TU352.11;TU398.2

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