發(fā)布時(shí)間：2018-04-24 09:29

  本文選題：預(yù)應(yīng)力 + 阻尼器　； 參考：《華北理工大學(xué)》2017年碩士論文

【摘要】：預(yù)應(yīng)力裝配框架結(jié)構(gòu)就是將預(yù)制好的梁、柱構(gòu)件,通過(guò)預(yù)應(yīng)力筋、錨具及張拉設(shè)備連接在一起的一種新型結(jié)構(gòu)形式。這種結(jié)構(gòu)形式在一些框架結(jié)構(gòu)住宅樓、辦公樓、大跨度的工廠廠房等使用的較為廣泛。預(yù)應(yīng)力裝配結(jié)構(gòu)具有減少勞動(dòng)力、提高施工速度、提高機(jī)械設(shè)備的使用、減少建筑垃圾的產(chǎn)生的優(yōu)點(diǎn)。設(shè)計(jì)6個(gè)邊節(jié)點(diǎn)試件進(jìn)行低周反復(fù)荷載試驗(yàn),2個(gè)不同配筋的現(xiàn)澆試件,4個(gè)附加阻尼器的不同配筋、不同預(yù)壓力的裝配試件,采用荷載-位移加載方式。根據(jù)試驗(yàn)結(jié)果,繪制滯回曲線、骨架曲線、延性系數(shù)表、殘余變形曲線、殘余位移表、剛度退化曲線,分析了6個(gè)試件在不同配筋率、不同預(yù)壓力下的變形性能。結(jié)合理論知識(shí),得到裝配結(jié)構(gòu)變形公式,并與試驗(yàn)數(shù)據(jù)進(jìn)行對(duì)比分析。試驗(yàn)結(jié)果表明:在低周反復(fù)荷載作用下,附加阻尼器的預(yù)應(yīng)力裝配試件的變形恢復(fù)力優(yōu)于現(xiàn)澆試件。提高試件的配筋率及預(yù)壓力,可以提高試件的承載力、變形恢復(fù)力。附加阻尼器的試件耗能能力強(qiáng),對(duì)抗震有利。論文中依據(jù)《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》(GB50010-2010)的相關(guān)計(jì)算公式,得到裝配結(jié)構(gòu)變形計(jì)算公式,與試驗(yàn)數(shù)據(jù)進(jìn)行比較,結(jié)果表明,加載后期計(jì)算結(jié)果與實(shí)際得到的變形曲線有差距,因此,建議開(kāi)裂后梁剛度SB降低35%,計(jì)算得到的荷載-位移曲線與實(shí)際相接近。
[Abstract]:Prestressed assembly frame structure is a new type of structure which connects prefabricated beam and column members through prestressing tendons anchors and tensioning equipments. This kind of structure is widely used in some frame structure residential buildings, office buildings, long-span factory buildings and so on. Prestressing assembly structure has the advantages of reducing labor force, increasing construction speed, increasing the use of machinery and equipment, and reducing the production of construction waste. Six specimens with side joints were designed to carry out low-cycle repeated load test, two cast-in-place specimens with different reinforcement, four assembly specimens with different reinforcement with dampers and different pre-pressure specimens were designed, and load-displacement loading mode was adopted. According to the experimental results, the hysteretic curve, skeleton curve, ductility coefficient table, residual deformation curve, residual displacement table and stiffness degradation curve were drawn. The deformation properties of 6 specimens under different reinforcement ratio and different pre-pressure were analyzed. Combined with theoretical knowledge, the deformation formula of assembly structure is obtained and compared with experimental data. The experimental results show that the deformation recovery of prestressing assembly specimens with dampers is better than that of cast-in-place specimens under low cyclic cyclic loading. The bearing capacity and deformation recovery of the specimens can be improved by increasing the reinforcement ratio and pre-pressure. The energy dissipation capacity of the specimen with additional dampers is strong, which is beneficial to earthquake resistance. According to the calculation formula of concrete structure Design Code (GB50010-2010), the deformation calculation formula of assembly structure is obtained and compared with the experimental data. The results show that there is a gap between the calculation result of the later loading period and the actual deformation curve. It is suggested that the stiffness SB of the cracked beam should be reduced by 35%, and the calculated load-displacement curve is close to the actual one.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU352.11

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