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分離式預(yù)制樓梯應(yīng)用于裝配式框架的抗震性能分析*
吳韜1,蔣敏2,劉洋3,蔣亞瓊1,謝汝強(qiáng)1
摘 要

 

1 安徽新華學(xué)院土木與環(huán)境工程學(xué)院, 合肥 230088; 2 安徽理工大學(xué)土木建筑學(xué)院, 淮南 232001;3 中鐵四局設(shè)計(jì)研究院,合肥 230023

摘要]為研究預(yù)制樓梯的分離連接構(gòu)造對裝配式框架結(jié)構(gòu)抗震性能的影響,設(shè)計(jì)了某多層產(chǎn)業(yè)化住宅試驗(yàn)樓的結(jié)構(gòu),其中預(yù)制樓梯與主體的連接有分離式和整體式兩種形式。利用SATWE軟件對兩種方案的試驗(yàn)樓分別進(jìn)行了振型分解法計(jì)算,對比分析了兩種方案下結(jié)構(gòu)的自振特性及地震響應(yīng)參數(shù)。分析結(jié)果表明,預(yù)制樓梯采用分離式連接可消除其斜撐效應(yīng)對框架結(jié)構(gòu)的不利影響,結(jié)構(gòu)的基底總剪力和總傾覆力矩明顯降低;樓梯間的框架柱內(nèi)力集中現(xiàn)象得到顯著改善;當(dāng)分離式預(yù)制樓梯設(shè)置在端部偏內(nèi)的位置時(shí),框架柱剪力沿縱向分布較為均勻,且樓梯間框架柱剪力均有所降低。

關(guān)鍵詞]裝配式框架; 分離式預(yù)制樓梯; 住宅產(chǎn)業(yè)化; 斜撐效應(yīng); 抗震性能

中圖分類號:TU375.4      文獻(xiàn)標(biāo)識碼:A      文章編號:1002-848X(2014)13-0040-04

Seismic performance analysis of separated prefabricated stairs used in the assembly frame

Wu Tao1, Jiang Min2, Liu Yang3, Jiang Yaqiong1, Xie Ruqiang1

 (1 College of Civil & Environmental Engineering, Anhui Xinhua University, Hefei 230088, China; 2 School of Civil Engineering and Architecture, Anhui University of Science & Technology, Huainan 232001, China; 3 Design & Research Institute of China Railway No.4 Engineering Group Co., Ltd., Hefei 230023, China)

Abstract: In order to study the influence of the separated connection structure of the prefabricated stair on the seismic performance of the assembly frame structure, a multi-story industrialized residential building was designed, and the connections between the prefabricated stair and the main frames have two contrasting schemes of separated and integrated connection. SATWE software was used to carry out the modal analysis of the two schemes, and the vibration characteristics and seismic response parameters were compared and analyzed. The analysis results show that the separated connection of the prefabricated stair can eliminate the adverse effects of its diagonal brace effect on the frame structure and the total basal shear forces and overturning moment of the structure has been significantly reduced. The internal force concentration phenomenon of frame columns in the stairwell is significantly relieved. When separated prefabricated stair are set near the end of the structure, the shear forces of frame columns distribute uniformly along the longitudinal direction and the shear forces of frame columns in the stairwell decrease to some extent.

Keywords: assembly frame structure; separated prefabricated stair; housing industrialization; diagonal brace effect; seismic performance

*安徽省高等學(xué)校自然科學(xué)研究重點(diǎn)項(xiàng)目(KJ2014A099),安徽省高等學(xué)校優(yōu)秀青年人才基金重點(diǎn)項(xiàng)目(2013SQRL098ZD2012SQRL229),安徽新華學(xué)院骨干教師資助項(xiàng)目(2012xgg03)。

作者簡介:吳韜,碩士,講師, Emailtaoxia201@163.com。

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