| 马忠诚,吴波.四面受火后钢筋砼柱抗震性能研究[J].计算力学学报,1997,14(4):443~453 |
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| 四面受火后钢筋砼柱抗震性能研究 |
| Seismic characteristics of R.C. columns after fire in all sides |
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| DOI：10.7511/jslx19974070 |
| 中文关键词: 火灾 抗震性能 自然恢复 钢筋混凝土结构 柱 |
| 英文关键词:fire damaged R.C. Column,seismic characteristics,natural recovery |
| 基金项目:国家自然科学基金,黑龙江省自然科学基金 |
| 马忠诚 吴波 |
| 哈尔滨建筑大学 |
| 摘要点击次数: 1190 |
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| 中文摘要: |
| 火灾后砼的强度和弹性模量损失很大，降低了钢筋砼结构的抗震能力。本文编制了火灾后已损伤钢筋砼柱的全过程分析程序，通过大量数值计算，建立了四面受火后钢筋砼柱恢复力骨架曲线特征参数的统计公式，并探讨了砼力学性质自然恢复对钩件抗震性能的影响，在此基础上，对两榀火灾后框架进行了地震反应分析，得到一些有意义的结论。 |
| 英文摘要: |
| The compressive strength and modules of elasticity of concrete decrease a lot after fire. As a result, the aseismic capacity of R.C. Structures declines to some degree. In this paper, the nonlinear analysis program for fire damaged R.C. Columns is developed, and regression formulas for parameters of hysteric skeleton curves of fire damaged R.C. Columns have been given based on a great number of numeric results. Then, the effect of natural recovery of concrete mechanic properties on the aseismic capacity of columns is examined, and the earthquake response analysis has been done for two frame structures |
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