發(fā)布時(shí)間：2018-05-29 08:10

  本文選題：半剛接鋼框架 + 內(nèi)填RC墻�。� 參考：《建筑結(jié)構(gòu)學(xué)報(bào)》2017年10期

【摘要】：半剛接鋼框架內(nèi)填鋼筋混凝土剪力墻(PSFRCW)結(jié)構(gòu)的超強(qiáng)系數(shù)受材料力學(xué)性能及構(gòu)件幾何尺寸的變異性影響較大。采用的Latin超立方抽樣方法考慮了PSFRCW結(jié)構(gòu)中型鋼、鋼筋及混凝土材料力學(xué)性能的隨機(jī)性,以及內(nèi)填RC墻厚度、半剛性節(jié)點(diǎn)的抗彎剛度及受彎承載力的變異性,結(jié)合GB 50011—2010《建筑抗震設(shè)計(jì)規(guī)范》設(shè)計(jì)了4組共計(jì)160個(gè)PSFRCW結(jié)構(gòu)算例樣本,分析了層數(shù)、抗震設(shè)防烈度對(duì)結(jié)構(gòu)超強(qiáng)系數(shù)的影響。采用Pushover方法確定了160個(gè)PSFRCW算例分別在均勻分布及廣義乘方水平力分布模式下的能力曲線。基于概率方法按置信水平為95%的單側(cè)置信下限值確定了PSFRCW結(jié)構(gòu)考慮層數(shù)、抗震設(shè)防烈度影響的超強(qiáng)系數(shù)。研究表明:考慮材料及構(gòu)件幾何尺寸變異性所確定的PSFRCW結(jié)構(gòu)的超強(qiáng)系數(shù)較按材料性能及構(gòu)件尺寸名義值所確定的PSFRCW結(jié)構(gòu)的超強(qiáng)系數(shù)值約大15%�？紤]高階振型影響的廣義乘方分布模式確定的PSFRCW結(jié)構(gòu)的超強(qiáng)系數(shù)值要小于按均勻分布模式確定的PSFRCW結(jié)構(gòu)的超強(qiáng)系數(shù)值。設(shè)防烈度相同時(shí),PSFRCW結(jié)構(gòu)的超強(qiáng)系數(shù)隨層數(shù)的增加呈增大趨勢(shì)。層數(shù)相同時(shí),PSFRCW結(jié)構(gòu)的超強(qiáng)系數(shù)隨抗震設(shè)防烈度的增加呈降低趨勢(shì)。在8度抗震設(shè)防區(qū),PSFRCW結(jié)構(gòu)的超強(qiáng)系數(shù)建議取為3.5;在9度抗震設(shè)防區(qū),PSFRCW結(jié)構(gòu)的超強(qiáng)系數(shù)建議取為3.2。
[Abstract]:The super-strength coefficient of the semi-rigid steel frame filled reinforced concrete shear wall (PSFRCW) structure is greatly affected by the material mechanical properties and the variation of the geometric size of the members. The Latin hypercube sampling method takes into account the randomness of mechanical properties of steel, steel and concrete materials in PSFRCW structure, as well as the variation of the thickness of RC wall, the flexural stiffness and flexural bearing capacity of semi-rigid joints. Combined with GB50011-2010 "Code for Seismic Design of buildings", four groups of 160 PSFRCW structural examples were designed, and the effects of story number and seismic fortification intensity on the superstrength coefficient of the structure were analyzed. The capability curves of 160 PSFRCW cases under the uniform distribution and generalized multiplier horizontal force distribution are determined by Pushover method. Based on the probability method, the superstrength coefficient of PSFRCW structure considering the number of floors and the influence of seismic fortification intensity is determined according to the lower confidence limit value of 95% confidence level. The results show that the super-strength coefficient of PSFRCW structure determined by taking into account the geometric dimension variability of materials and members is about 15% larger than that of PSFRCW structure determined by nominal value of material performance and component size. The super-coefficient of the PSFRCW structure determined by the generalized multiplier distribution mode considering the influence of the higher-order mode is smaller than that of the PSFRCW structure determined by the uniform distribution mode. The superstrength coefficient of PSFRCW structure with the same fortification intensity tends to increase with the increase of the number of layers. The superstrength coefficient of PSFRCW structure decreases with the increase of seismic fortification intensity when the number of stories is the same. The superstrength coefficient of PSFRCW structure in 8 degree seismic fortification area and 9 degree seismic fortification area is suggested to be 3.5 and 3.2 respectively.
【作者單位】： 蘇州科技大學(xué)土木工程學(xué)院;蘇州科技大學(xué)江蘇省結(jié)構(gòu)工程重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金項(xiàng)目(51108292) 江蘇省“青藍(lán)工程”中青年學(xué)術(shù)帶頭人項(xiàng)目 江蘇省研究生培養(yǎng)創(chuàng)新工程項(xiàng)目(KYLX_1287,SJLX15_0638)
【分類號(hào)】：TU398.2

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