本文選題：預(yù)制矩形腹板PSRC梁 + 抗震性能�。� 參考：《蘇州科技大學(xué)》2017年碩士論文

【摘要】：型鋼混凝土結(jié)構(gòu)是混凝土、型鋼以及鋼筋協(xié)同工作的組合結(jié)構(gòu)。型鋼混凝土結(jié)構(gòu)兼具鋼筋混凝土結(jié)構(gòu)和鋼結(jié)構(gòu)的優(yōu)點(diǎn),它具有剛度大、抗震及防火性能好等優(yōu)點(diǎn)。目前型鋼混凝土結(jié)構(gòu)已經(jīng)應(yīng)用在一些大型超高層建筑中,而在一般高層建筑與多層建筑中卻較少使用,最主要的原因是型鋼混凝土結(jié)構(gòu)現(xiàn)場施工工序較為復(fù)雜,這制約了型鋼混凝土結(jié)構(gòu)的發(fā)展與推廣。預(yù)制裝配式混凝土結(jié)構(gòu)是首先在工廠生產(chǎn)預(yù)制構(gòu)件,再運(yùn)至施工現(xiàn)場,最后裝配成整體結(jié)構(gòu)。這將簡化施工工序,加快施工速度,減少環(huán)境污染,符合綠色施工的要求。面對型鋼混凝土結(jié)構(gòu)的局限性,通過型鋼混凝土結(jié)構(gòu)與預(yù)制裝配式混凝土結(jié)構(gòu)的整合。國內(nèi)外專家提出預(yù)制裝配型鋼混凝土(簡稱為PSRC)結(jié)構(gòu)形式。這是在型鋼混凝土結(jié)構(gòu)與預(yù)制裝配混凝土結(jié)構(gòu)的基礎(chǔ)上,將兩者創(chuàng)新性結(jié)合在一起的結(jié)構(gòu)。本文對預(yù)制矩形腹板PSRC梁進(jìn)行抗震性能試驗(yàn)研究。研究內(nèi)容如下:(1)對5個預(yù)制矩形腹板PSRC梁進(jìn)行低周反復(fù)加載試驗(yàn)。(2)主要研究其破壞模式、滯回曲線、延性、剛度退化、耗能能力、變形恢復(fù)能力等性能。(3)分析剪跨比、現(xiàn)澆板混凝土強(qiáng)度對預(yù)制矩形腹板PSRC梁抗震性能的影響。(4)結(jié)合《混凝土結(jié)構(gòu)設(shè)計規(guī)范》對預(yù)制矩形腹板PSRC梁的開裂彎矩、正截面受彎承載力進(jìn)行理論推導(dǎo),通過理論值與試驗(yàn)值對比驗(yàn)證公式的有效性。研究結(jié)果表明:增大試驗(yàn)梁的剪跨比可使滯回曲線更為飽滿,延性得到改善,耗能能力增強(qiáng),剛度退化減緩;提高梁上部現(xiàn)澆板混凝土強(qiáng)度,梁的承載力略有提升,但是位移延性系數(shù)降低,對剛度退化無明顯影響;試驗(yàn)梁開裂彎矩、正截面受彎承載力理論值與試驗(yàn)值較為符合,驗(yàn)證了公式的有效性。
[Abstract]:The steel concrete structure is a combined structure of concrete, steel and steel. The steel concrete structure has the advantages of both the reinforced concrete structure and the steel structure. It has the advantages of large stiffness, good earthquake resistance and good fire resistance. The present steel concrete structure has been used in a large number of super high rise buildings, but in the general high-rise building. The main reason is that the site construction process of the steel concrete structure is more complex, which restricts the development and popularization of the steel concrete structure. The prefabricated concrete structure is first produced in the factory, then it is transported to the present field, and finally assembled into the whole structure. This will simplify the construction. Working procedure, speeding up the construction speed, reducing environmental pollution, conforming to the requirement of green construction. Facing the limitation of the steel concrete structure, through the integration of the steel concrete structure with the prefabricated concrete structure. The domestic and foreign experts put forward the prefabricated steel concrete (called PSRC) structure form. This is the type steel concrete structure and prefabrication. On the basis of assembling the concrete structure, the structure of the two is combined together. The seismic performance test of the precast rectangular web PSRC beams is studied in this paper. The contents are as follows: (1) 5 prefabricated rectangular web plates are subjected to low cyclic loading test. (2) the failure mode, hysteresis curve, ductility, stiffness degradation and energy consumption are mainly studied. Capacity, deformation recovery capability and other properties. (3) analysis of the shear span ratio, the effect of concrete strength of cast in place slab on the seismic performance of precast rectangular web PSRC beams. (4) a theoretical deduction of the bending moment of the precast rectangular web PSRC beam and the flexural bearing capacity of the positive section is derived, and the formula is compared with the experimental values to verify the formula. The results show that increasing the shear span ratio of the test beam can make the hysteretic curve more full, the ductility is improved, the energy dissipation capacity is increased, the stiffness degradation slows down, the strength of the concrete on the top of the beam is improved, the bearing capacity of the beam is slightly improved, but the displacement ductility coefficient is reduced, and the stiffness degradation has no obvious effect. The cracking bending moment of the test beam is not obvious. The theoretical value of the flexural bearing capacity of the normal section agrees well with the experimental value, which verifies the validity of the formula.
【學(xué)位授予單位】：蘇州科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU398.9

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本文編號：2042052