| 预应力混凝土异形柱框架抗震性能研究 |
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| 引用本文： | 曹云中,干钢,唐锦春.预应力混凝土异形柱框架抗震性能研究[J].科技通报,2006,22(6):796-801. |
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| 作者姓名： | 曹云中 干钢 唐锦春 |
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| 作者单位： | 1. 浙江大学,建筑工程学院,杭州,310027
2. 浙江大学,建筑设计研究院,杭州,310027 |
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| 摘 要： | 基于对现有异形柱的研究成果与有关钢筋混凝土非线性力学及预应力结构基本理论,提出了适用于预应力混凝土异形柱框架的非线性有限元分析方法。针对该框架柱截面不规则等特点,运用分区层合截面法、主从系统中的偏心转化法,对框架作适当的单元划分。并通过运用子结构法及静力凝聚法减少计算量。混凝土与钢筋采用差量叠加式模型。预应力用等效荷载法处理。结合逐步加位移自修正法编制了对该结构进行单向及反复推覆分析的非线性计算程序,并验证了用该方法研究结构抗震性能的有效性。
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| 关 键 词： | 预应力混凝土 异形柱框架 非线性有限元分析 推覆分析 抗震性能 |
| 文章编号： | 1001-7119（2006）06-0796-06 |
| 收稿时间： | 2005-03-11 |
| 修稿时间： | 2005年3月11日 |
Study on Aseismic Performance of Prestressed Concrete Frame with Special-section Column |
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| CAO Yun-zhong,GAN Gang,TANG Jin-chun.Study on Aseismic Performance of Prestressed Concrete Frame with Special-section Column[J].Bulletin of Science and Technology,2006,22(6):796-801. |
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| Authors: | CAO Yun-zhong GAN Gang TANG Jin-chun |
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| Institution: | 1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China; 2. Architectural Design and Research Institute, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Nonlinear finite analysis of prestressed concrete frame structure with special-section column is presented based on results of studies on special-section column and fundamental theory such as nonlinear mechanics of reinforced-concrete and prestressed structure.Due to features of the frame such as irregular cross-section of the column,the frame is divided into elements properly.Zonal lamination section method and eccentricity transition matrix in master-slave system are applied.Substructure and static condensation are utilized to reduce computing time.The differential superposition method is used to combine concrete with bar.The prestressing force is solved by principle of equivalent load.The calculation program to nonlinearly analyze the structure with self-modifying step-iterative method under condition of incremental displacement is set up,which is used to study the aseismic performance of the frame with PUSH-OVER method under the unilateral and the reversed cyclic loading.The proposed method is verified. |
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| Keywords: | prestressed concrete frame with special-section column nonlinear finite analysis PUSH-OVER aseismic performance |
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