【摘要】：在框架結(jié)構(gòu)設(shè)計(jì)中，，梁的上下部縱筋需根據(jù)截面彎矩來(lái)確定，當(dāng)梁端的彎矩與跨中的彎矩相差太大的時(shí)候，彎矩小的截面的混凝土材料不能得到充分利用，造成材料浪費(fèi)。為了能夠更好的充分利用材料，發(fā)揮材料的力學(xué)性能，若在結(jié)構(gòu)設(shè)計(jì)時(shí)，設(shè)計(jì)出的結(jié)構(gòu)截面尺寸使梁端的彎矩和跨中的彎矩相差不大，亦或趨于均衡，那么就可以充分地利用材料，使設(shè)計(jì)出來(lái)的結(jié)構(gòu)在滿足安全的條件下，趨于經(jīng)濟(jì)合理。 本文在理論上分析了梁柱截面尺寸與節(jié)點(diǎn)受力分配的關(guān)系。通過(guò)變化梁和柱的截面尺寸來(lái)分析梁、柱截面尺寸的變化對(duì)結(jié)構(gòu)內(nèi)力的影響關(guān)系。對(duì)各截面尺寸下的框架模型進(jìn)行了內(nèi)力計(jì)算分析，通過(guò)對(duì)各截面尺寸桿端彎矩和跨中彎矩進(jìn)行比較，找出了使梁端的彎矩和跨中的彎矩相差不大，亦或趨于均衡時(shí)的梁柱剛度比的范圍。分析結(jié)果表明：在忽略梁、柱軸向變形和剪切變形的情況下，當(dāng)梁與柱線剛度比K在0.7~1.3范圍時(shí)，框架結(jié)構(gòu)的內(nèi)力分布相差不大，相對(duì)來(lái)說(shuō)還是比較均衡的，能夠達(dá)到梁柱截面尺寸優(yōu)化的目的。 本文以錦州市釀造廠辦公樓為研究對(duì)象，建立了2個(gè)不同層高的結(jié)構(gòu)模型，利用PKPM系列軟件，在現(xiàn)行結(jié)構(gòu)設(shè)計(jì)規(guī)范下對(duì)其抗震性和經(jīng)濟(jì)性進(jìn)行了計(jì)算和分析。結(jié)果表明：在考慮梁柱線剛度比的情況下，梁與柱的線剛度比K在0.7~1.1范圍時(shí)，結(jié)構(gòu)比較經(jīng)濟(jì)，滿足梁柱線剛度比K屬于0.7~1.3時(shí)內(nèi)力分布均衡的理論范圍，此時(shí)梁高取跨度的1/12。
[Abstract]:In the design of frame structure, the longitudinal reinforcement of the upper and lower parts of the beam should be determined according to the bending moment of the section. When the moment at the end of the beam is too different from the moment in the middle of the span, the concrete material of the section with small bending moment can not be fully utilized, resulting in material waste. In order to make full use of the material and give full play to the mechanical properties of the material, if the structural cross-section size is designed, the difference between the bending moment at the end of the beam and the moment in the span is little, or tends to be balanced. Then we can make full use of the material and make the designed structure more economical and reasonable under the condition of satisfying the safety. In this paper, the relationship between the size of Liang Zhu section and the force distribution of joints is analyzed theoretically. By changing the cross section size of the beam and column, the influence of the change of the section size of the column on the internal force of the structure is analyzed. The internal force calculation and analysis of the frame model with different cross-section dimensions are carried out. By comparing the bending moment at the end of the beam and the moment in the middle of the span, it is found that the moment at the end of the beam is not different from the moment in the middle of the span. Or tend to balance the range of Liang Zhu stiffness ratio. The results show that under the condition of neglecting the beam, column axial deformation and shear deformation, when the ratio of beam to column stiffness K is in the range of 0.7 ~ 1.3, the internal force distribution of the frame structure is relatively balanced. Can achieve Liang Zhu section size optimization purpose. In this paper, taking the office building of Jinzhou brewing factory as the research object, two structural models with different story height are established. The aseismic and economical properties of the building are calculated and analyzed under the current structural design code by using PKPM software. The results show that when the linear stiffness ratio K of beam and column is in the range of 0.7 ~ 1.1, the structure is more economical and satisfies the theoretical range of equal distribution of internal force when the ratio K is 0.71.3.The result shows that the linear stiffness ratio K of Liang Zhu is in the theoretical range of 0.7 ~ 1.3, and the linear stiffness ratio K of beam and column is in the range of 0.7 ~ 1.1. At this point, the beam is 1 / 12 of the span.
【學(xué)位授予單位】：遼寧工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU375.4

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