- 摘 要
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(1 清華大學土木工程系， 北京 100084； 2 清華大學土木工程安全與耐久教育部重點實驗室， 北京 100084； 3 大連海洋大學海洋與土木工程學院， 大連 116023）
［摘要］基于鋼和混凝土靜態(tài)、動態(tài)本構(gòu)模型和纖維梁基本原理，開發(fā)了直接能夠與MSC.MARC主程序保持數(shù)據(jù)相互調(diào)用的子程序（包括材料應變率效應、被動控制、主動控制與單元生死判斷）。主要涉及到材料的應變率效應，該子程序不限于只考慮靜態(tài)本構(gòu)模型，還考慮了動態(tài)本構(gòu)模型以進一步考慮結(jié)構(gòu)在動力作用下應變率因素對結(jié)構(gòu)反應的影響，可結(jié)合單元生死子程序用于結(jié)構(gòu)在動力作用下的彈塑性和倒塌分析。最后，將編制的應變率子程序應用于鋼筋混凝土構(gòu)件的彈塑性分析，并與已有試驗結(jié)果對比，說明了該子程序的可靠性和準確性，同時也認為有必要考慮應變率因素對結(jié)構(gòu)反應的影響。
［關鍵詞］彈塑性; 損傷滯回本構(gòu); 應變率效應; 纖維梁; MSC.MARC; 倒塌
中圖分類號：TU973.2,TP319 文獻標識碼：A 文章編號：1002-848X(2014)04-0082-06
Dynamic elastic-plasticity and collapse analysis for large-span and high-rise structure (Ⅰ): Theory, development and verification of MSC.MARC subroutine
Liu Guohuan1, 2, Lu Xinzheng1, 2, Li Min3
(1 Department of Civil Engineering, Tsinghua University, Beijing 100084,China; 2 Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing 100084, China; 3 School of Marine and Civil Engineering, Dalian Ocean University, Dalian 116023, China)
Abstract: On the basis of the principle of fiber beam model and the static, dynamic constitutive models of steel and concrete, the subroutine, which is in compliance with MSC.MARC user guide, was coded and developed covering the effect of material strain-rate, passive control, active control and birth-death judgment of elements. The content focused on the effect of material strain rate effect. The developed subroutine includes the static stress-strain relationships well as the dynamic stress-strain relationships to consider the influence of strain-rate effect on structural dynamic response. Combined with birth-death subroutine, structural elastic-plastic and collapse analysis can be conducted. At last, the developed subroutine was used to simulate the elastic-plastic analysis of reinforced concrete members and the simulation results were compared with experiment results. The analysis results show that the subroutine developed is verified to be reliable and accurate，and further indicate that it is necessary to consider the influence of strainrate effect on the structural response.
Keywords: elastic-plastic; damage hysteretic constitutive relationship; strain-rate effect; fiber beam; MSC.MARC; collapse
*中國博士后科學基金（2011M500332）。
作者簡介：柳國環(huán)，博士，現(xiàn)為天津大學副教授，Email：carecivil@sina.com。
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