Sectional Kinematic-strengthening Restoring Force Model Considering Axial Force and Bending Moment Coupling

陈永盛; 吴斌; 潘天林

doi:10.13409/j.cnki.jdpme.2014.03.017

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Sectional Kinematic-strengthening Restoring Force Model Considering Axial Force and Bending Moment Coupling

更新时间：2025-12-11

- Sectional Kinematic-strengthening Restoring Force Model Considering Axial Force and Bending Moment Coupling
- Vol. 34, Issue 3, Pages: 336-341(2014)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2014.03.017
  CLC： U321
- Published：2014
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[1]陈永盛,吴斌,潘天林.考虑轴力弯矩耦合的截面随动强化恢复力模型[J].防灾减灾工程学报,2014,34(03):336-341.

陈永盛, 吴斌, 潘天林. Sectional Kinematic-strengthening Restoring Force Model Considering Axial Force and Bending Moment Coupling[J]. 2014, 34(3): 336-341.
[1]陈永盛,吴斌,潘天林.考虑轴力弯矩耦合的截面随动强化恢复力模型[J].防灾减灾工程学报,2014,34(03):336-341. DOI： 10.13409/j.cnki.jdpme.2014.03.017.

陈永盛, 吴斌, 潘天林. Sectional Kinematic-strengthening Restoring Force Model Considering Axial Force and Bending Moment Coupling[J]. 2014, 34(3): 336-341. DOI： 10.13409/j.cnki.jdpme.2014.03.017.

摘要

截面层次的恢复力模型能兼顾计算精度与计算效率

为此在梁-柱单元中得到了广泛的应用。但目前给定"轴力-弯矩-曲率"的截面恢复力模型无法灵活考虑轴力与弯矩的耦合作用;采用屈服面的截面恢复力模型尚未考虑截面强化效应。提出了基于屈服面的截面随动强化恢复力模型及其积分方法

首先依据截面屈服面建立了截面随动强化恢复力模型

然后依托塑性理论

进行截面状态确定和本构关系积分。最后利用所提出的恢复力模型进行了悬臂柱的静力往复分析。结果表明:（1）所选用的截面恢复力模型能很好考虑轴力存在对弯矩的影响;（2）该模型具有随动强化的特性;（3）在精度上接近纤维截面所用的单轴材料随动强化模型。

Abstract

Restoring force models（RFM）in sectional level can meet both computational accuracy and efficiency

it is extensively applied to beam-column element.However

the current sectional RFM

which is specified by′axial force-bending moment-curvature′cannot account for axial force and bending moment（AFBM）coupling flexibly

other RFMs based on yield surface（YS）did not consider strengthening effect.In this paper

the sectional kinematic-strengthening restoring force model considering AFBM coupling and its integration method is proposed.Firstly

the sectional kinematic-strengthening restoring force model is built based on YS.Secondly

the state of the section is determinated and the constitution relation is integrated according to plastic theory.Finally

the static cycle analysis of a cantilever column was implemented.The results show that:（1）the proposed RFM can well account for AFBM interaction

（2）the RFM based on extending YS is characterized by kinematic strengthening.（3）the computational accuracy of the proposed RFM is close to that of the fiber model with uniaxial material constitutive relation.

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references

钢框架极限承载力的有限变形理论分析和试验研究 [J]. 舒兴平,沈蒲生. 工程力学 . 1993(04)

弹性与塑性力学[M]. 中国建筑工业出版社 , (美)陈惠发,（美）A.F.萨里普著, 2004

有限单元法[M]. 清华大学出版社 , 王勖成编著, 2003

A generalized design-based elastoplastic analysis of steel frames by section assemblage concept [J] . Siu-Lai Chan,Peter Pui-Tak Chui. Engineering Structures . 1997 (8)

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