设计变截面交叉柔性力学的模型在装配式钢构建筑梁柱预应力中的分析
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摘要
为了提高装配式钢构建筑梁柱的抗震性能,设计一种变截面交叉柔性力学模型进行截面抗震性的预应力评估。方法中采用极限承载力约束进行抗震性分析,引入抗弯刚度软化系数进行误差修正,求出钢构建筑梁柱的荷载作用力矩,通过应力评估和结构解耦性设计,实现钢构建筑梁柱的抗震性评估。构建以钢材强度、延性指标和钢框架地震易损特征为约束参量的抗震性能分析函数,建立装配式钢构建筑梁柱开裂初始预应力预测方法,实现装配式钢构建筑梁柱预应力的准确评估。试验结果表明,所提模型能够对装配式钢构建筑梁柱的应力应变关系、屈服强度以及极限承载力进行准确计算,提高配式钢构建筑梁柱的抗震性能。
To improve the seismic performance of fabricated steel beams and columns, a flexible mechanical model with variable cross-section was designed to evaluate the prestress of the cross-section seismic performance. In this method, ultimate bearing capacity constraints were used for seismic analysis and flexural stiffness softening coefficient was introduced to correct the error and then the load moment of the steel beam and column was obtained. Through stress assessment and structural decoupling design, seismic evaluation of steel beam and column was realized. The seismic performance analysis function having steel strength, ductility index, and seismic vulnerability of steel frame as constraint parameters was constructed, and the prediction method of initial prestressing for thin waist cracking of prefabricated steel structure was established to realize the accurate evaluation of prestress of beam and column in prefabricated steel structure. The test results showed that the proposed model can accurately calculate the stress-strain relation, yield strength, and ultimate bearing capacity of beam and column in prefabricated steel structure, thereby improving the seismic performance of beam and column in prefabricated steel structure.
To improve the seismic performance of fabricated steel beams and columns, a flexible mechanical model with variable cross-section was designed to evaluate the prestress of the cross-section seismic performance. In this method, ultimate bearing capacity constraints were used for seismic analysis and flexural stiffness softening coefficient was introduced to correct the error and then the load moment of the steel beam and column was obtained. Through stress assessment and structural decoupling design, seismic evaluation of steel beam and column was realized. The seismic performance analysis function having steel strength, ductility index, and seismic vulnerability of steel frame as constraint parameters was constructed, and the prediction method of initial prestressing for thin waist cracking of prefabricated steel structure was established to realize the accurate evaluation of prestress of beam and column in prefabricated steel structure. The test results showed that the proposed model can accurately calculate the stress-strain relation, yield strength, and ultimate bearing capacity of beam and column in prefabricated steel structure, thereby improving the seismic performance of beam and column in prefabricated steel structure.
引文
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[12] 郝际平,孙晓岭,薛强,等.绿色装配式钢结构建筑体系研究与应用[J].工程力学,2017,34(1):1-13.HE Jiping,SUN Xiaoling,XUE Qiang,et al.Research and Application Of Green Assembled Steel Structure Building System[J].Engineering Mechanics,2017,34 (1):1-13.
[13] 王伟,廖芳芳,陈以一.基于微观机制的钢结构节点延性断裂预测与裂后路径分析[J].工程力学,2014,31(3):101-108.WANG Wei,LIAO Fangfang,CHEN Yiyi.Ductile Fracture Prediction and Post-Fracture Path Tracing of Steel Connections Based on Micromechanics-Based Fracture Criteria[J].Engineering Mechanics,2014,31(3):101-108,115.
[14] 白雪见,任栋,贾源源,等.汶川8.0级大震的余震最大强度用科里奥利力效应方法的判定[J].地震工程学报,2018,40(5):1073-1077.BAI Xuejian,REN Dong,JIA Yuanyuan,et al.Derterminatin of the Largest Aftershock of Wenchuan MS 8 .0Earthquake in 2008 by the Coriolis Force Effect[J].China Earthquake Engineering Journal,2018,40(5):1073-1077.
[15] 李英民,刘烁宇,戴明辉.长周期地震动及其在超高层建筑抗震校验中的应用[J].土木工程学报,2018,51(11):53-60.LI Yingmin,LIU Shuoyu,DAI Minghui.Long-Period Ground Motion and Its Application in Seismic Checking of Super High-Rise Buildings[J].China Civil Engineering Journal,2018,51(11):53-60.
[2] 马强强,王燕,杨松森,等.全装配式组合螺栓连接节点抗震性能研究[J].钢结构,2017,32(3):36-40.MA Qiangqiang,WANG Yan,YANG Songsen,et al.Research on the Seismic Behavior of Fully Assembled Composite Bolted Joint[J].Steel Construction,2017,32(3):36-40.
[3] 郑山锁,张晓辉,赵旭冉,等.近海大气环境下锈蚀钢框架梁抗震性能试验及恢复力模型研究[J].工程力学,2018,35(12):98-106,115.ZHENG Shansuo,ZHANG Xiaohui,ZHAO Xuran,et al.Experimentaland Restoring Force Model Research on the Seismic Behavior of Corroded Steel Frame Beams in Offshore Atmospheric Environment[J].Engineering Mechanics,2018,35(12):98-106,115.
[4] 曹石,舒赣平,林坤洪,等.一种新型装配式钢结构外挂墙板连接节点的受力性能分析和设计方法[J].建筑结构,2017,47(10):46-52.CAO Shi,SHU Ganping,LIN Kunhong,et al.Design Method and Strength Analysis of a New Out-Hang Connection of Assembled Steel Structure Cladding Wall Panels[J].Building Structure,2017,47(10):46-52.
[5] 钟炜辉,孟宝,郝际平.钢框架栓焊连接梁柱子结构抗倒塌性能分析[J].华中科技大学学报(自然科学版),2017,45(2):101-109.ZHONG Weihui,MENG Bao,HAO Jiping.Analysis of Anti-Collapse Performance for Beam-To-Column Assembly with Bolt and Weld Connection of Steel Frame[J].Journal of Huazhong University of Science and Technology (Natural Science Edition),2017,45(2):101-109.
[6] 王冬花,王静峰,李贝贝,等.装配式钢管混凝土组合框架的抗震性能试验研究[J].土木工程学报,2017,50(8):20-28,48.WANG Donghua,WANG Jingfeng,LI Beibei,et al.Experimental Study on Seismic Behavior of Prefabricated CFST Composite Frames[J].China Civil Engineering Journal,2017,50(8):20-28,48.
[7] 马强强,王燕,杨松森,等.全装配式组合螺栓连接节点抗震性能研究[J].钢结构,2017,32(3):36-40.Ma Qiangqiang,Wang Yan,Yang Songsen,et al.Study on seismic behavior of fully assembled composite bolted joints[J].Steel structure,2017,32(3):36-40.
[8] 刘学春,周小俊,张译文.外挂整体装配式墙体及连接抗震性能研究[J].工业建筑,2017,47(7):34-39.LIU Xuechun,ZHOU Xiaojun,ZHANG Yiwen,et al.Experimental Study of Seismic Performance of Integralassembled Cladding Panels and Connections[J].Industrial Construction,2017,47(7):34-39,33.
[9] 张爱林,郭志鹏,刘学春,等.装配式建筑双槽钢组合截面梁整体稳定系数研究[J].工程力学,2018,35(2):67-75.ZHANG Ailin,GUO Zhipeng,LIU Xuechun,et al.Global Stability Coefficient of Prefabricated Beams with Dual-Channel Combined Section[J].Engineering Mechanics,2018,35(2):67-75.
[10] 雷宏刚,邱斌,姬艳玲.装配式轻钢结构住宅中自攻螺丝连接受力性能研究评述[J].太原理工大学学报,2017,48(3):265-274.LEI Honggang,QIU Bin,JI Yanling,et al.An Overview Study on Bearing Capacity Properties of Self-Tapping Screw Connection in Prefabricated Light-Guage Steel Structure Residence[J].Journal of Taiyuan University of Technology,2017,48(3):265-274.
[11] 卜凡民,聂建国,樊健生.高轴压比下中高剪跨比双钢板-混凝土组合剪力墙抗震性能试验研究[J].建筑结构学报,2013,34(4):91-98.BU Fanmin,NIE Jianguo,FAN Jiansheng.Experimental Study on Seismic Behavior of Medium and High Shear-Span Ratio Composite Shear Wall with Double Steel Plates and Infill Concrete under High Axial Compression Ratio[J].Journal of Building Structures,2013,34(4):91-98.
[12] 郝际平,孙晓岭,薛强,等.绿色装配式钢结构建筑体系研究与应用[J].工程力学,2017,34(1):1-13.HE Jiping,SUN Xiaoling,XUE Qiang,et al.Research and Application Of Green Assembled Steel Structure Building System[J].Engineering Mechanics,2017,34 (1):1-13.
[13] 王伟,廖芳芳,陈以一.基于微观机制的钢结构节点延性断裂预测与裂后路径分析[J].工程力学,2014,31(3):101-108.WANG Wei,LIAO Fangfang,CHEN Yiyi.Ductile Fracture Prediction and Post-Fracture Path Tracing of Steel Connections Based on Micromechanics-Based Fracture Criteria[J].Engineering Mechanics,2014,31(3):101-108,115.
[14] 白雪见,任栋,贾源源,等.汶川8.0级大震的余震最大强度用科里奥利力效应方法的判定[J].地震工程学报,2018,40(5):1073-1077.BAI Xuejian,REN Dong,JIA Yuanyuan,et al.Derterminatin of the Largest Aftershock of Wenchuan MS 8 .0Earthquake in 2008 by the Coriolis Force Effect[J].China Earthquake Engineering Journal,2018,40(5):1073-1077.
[15] 李英民,刘烁宇,戴明辉.长周期地震动及其在超高层建筑抗震校验中的应用[J].土木工程学报,2018,51(11):53-60.LI Yingmin,LIU Shuoyu,DAI Minghui.Long-Period Ground Motion and Its Application in Seismic Checking of Super High-Rise Buildings[J].China Civil Engineering Journal,2018,51(11):53-60.