本文選題：豎向地震作用 + 鋼筋混凝土剪力墻��； 參考：《西南交通大學(xué)》2017年碩士論文

【摘要】：本文以西昌(9度區(qū))某高層剪力墻結(jié)構(gòu)為研究對(duì)象,重點(diǎn)研究9度區(qū)豎向地震作用對(duì)剪力墻結(jié)構(gòu)抗震性能的影響。先后采用了振型分解反應(yīng)譜法和時(shí)程分析方法對(duì)該剪力墻結(jié)構(gòu)進(jìn)行水平單向地震作用、水平雙向地震作用、水平單向加豎向地震作用和水平雙向加豎向地震作用這幾種工況下的分析計(jì)算;隨后在原有結(jié)構(gòu)模型的基礎(chǔ)上分別加設(shè)三個(gè)不同長(zhǎng)度的懸挑梁,同樣對(duì)其進(jìn)行上述幾種工況的分析計(jì)算。對(duì)結(jié)構(gòu)的層間水平位移、剪力墻軸力、梁端彎矩、跨中彎矩、懸挑梁根部彎矩和端部豎向位移進(jìn)行對(duì)比分析,以此來(lái)考察豎向地震作用對(duì)高層剪力墻結(jié)構(gòu)抗震性能的影響。結(jié)果表明:9度區(qū)的豎向地震作用對(duì)結(jié)構(gòu)內(nèi)力和變形影響很大;豎向地震作用下剪力墻結(jié)構(gòu)使用時(shí)程分析方法進(jìn)行補(bǔ)充計(jì)算是很有必要的;豎向地震作用使剪力墻軸向拉力最大增加20.20%,軸向壓力最大增加15.23%;使梁端彎矩和跨中彎矩分別最大增加86.36%和89.47%;豎向地震作用對(duì)懸挑梁根部彎矩的影響程度隨著挑出長(zhǎng)度的增加而增大,且長(zhǎng)度越大增幅越顯著;結(jié)構(gòu)的水平向位移基本不受豎向地震作用的影響,但是豎向地震作用對(duì)水平受彎構(gòu)件的豎向位移影響較大。以上結(jié)論可以應(yīng)用在9度區(qū)剪力墻結(jié)構(gòu)的設(shè)計(jì)工作方面,為地震響應(yīng)計(jì)算方法的選取、豎向地震作用的影響程度和懸挑構(gòu)件長(zhǎng)度的確定的提供一定的參考。
[Abstract]:In this paper, a high-rise shear wall structure in Xichang area of 9 degrees is taken as the research object, and the influence of the vertical earthquake action on the seismic behavior of the shear wall structure in the area of 9 degrees is mainly studied.The mode decomposition response spectrum method and the time history analysis method are adopted successively to carry out the horizontal unidirectional seismic action and the horizontal bidirectional seismic action to the shear wall structure.The analysis and calculation of horizontal unidirectional plus vertical seismic action and horizontal and bidirectional vertical seismic action are carried out, and then three cantilever beams of different lengths are added on the basis of the original structural model.At the same time, the above several working conditions are analyzed and calculated.The horizontal displacement, the axial force of shear wall, the moment at the end of beam, the moment in the span, the moment at the root of the cantilever beam and the vertical displacement at the end of the structure are compared and analyzed in order to investigate the effect of the vertical earthquake on the seismic behavior of the high-rise shear wall structure.The results show that the vertical earthquake in the area of 9 degrees has great influence on the internal force and deformation of the structure, and it is necessary to use the time history analysis method to carry out the supplementary calculation of the shear wall structure under the vertical earthquake.The axial tension and axial pressure of shear wall were increased 20.20, 15.23, 86.36% and 89.47% respectively. The influence of vertical earthquake on the bending moment at the root of cantilever beam was increased by 86.36% and 89.47% respectively.As the length increases,The horizontal displacement of the structure is not affected by the vertical earthquake, but the vertical earthquake has a great effect on the vertical displacement of the horizontal flexural member.The above conclusions can be applied to the design of shear wall structures in 9 degree region, and provide some reference for the selection of seismic response calculation method, the influence degree of vertical earthquake action and the determination of the length of cantilever members.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU398.2;TU352.11

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