- 摘 要
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(中材建設(shè)有限公司，唐山 063030)
［摘要］以實際工程為例，進行了四種不同網(wǎng)架方案的比較，分析了雙層網(wǎng)架與三層網(wǎng)架的受力規(guī)律；通過支承體系與網(wǎng)架的整體建模和協(xié)同作用分析，給出了支承柱受力情況；詳細研究了三層網(wǎng)架的動力特性，比較和總結(jié)了三層網(wǎng)架地震內(nèi)力影響系數(shù)，三層網(wǎng)架在豎向地震和水平地震作用下各層桿件的動內(nèi)力分布規(guī)律。研究表明，三層斜放四角錐網(wǎng)架結(jié)構(gòu)具有優(yōu)越的受力性能，并且用鋼量低，是大跨度矩形平面屋蓋的合理結(jié)構(gòu)形式。研究成果為工程設(shè)計和該類結(jié)構(gòu)推廣具有重要的指導意義。
［關(guān)鍵詞］三層網(wǎng)架；結(jié)構(gòu)選型；協(xié)同分析；動力特性；地震內(nèi)力系數(shù)
Study on design and seismic capability of triple-layer grid structures
Ma Zhengrong(Sinoma Construction Co., Ltd., Tangshan 063030，China)
Abstract:Taking an example of an actual project, a variety of grid programs were systematically compared and analyzed, and the force behavior of double-layer grids and triple-layer grids were proposed. Through overall modeling, the synergistic effects between the support system and grids were analyzed, and the force behavior of support columns were given. Dynamic characteristics of triple-layer grids were also studied, and the influence coefficient of seismic internal force on triple-layer grids was concluded. It shows that the triple-layer quadrangular pyramid grids were reasonable structural style for the large-span roofs due to superior mechanical properties and low steel consumption. The research results provide an important guiding significance for engineering design and the development and expansion of this kind of structures.
Keywords:triple-layer grids; structure form; synergistic analysis; dynamic characteristics; coefficient of seismic internal force
作者簡介：馬崢嶸，高級工程師，Email：zhengrong.ma@163.com。
參考文獻
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