角钢混凝土柱正截面受力性能试验研究

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基金项目:

教育部新世纪优秀人才支持计划资助项目(教技司[2005]290号);黑龙江省科技攻关项目(GC4A609);哈尔滨市科技攻关计划项目(2004AA9CS187)

EXPERIMENTAL RESEARCH ON FLEXURAL MECHANICAL BEHAVIOR OF ANGLE-STEEL CONCRETE COLUMNS

摘要: 通过对9根不同轴压比(n0=0.33~0.42)和钢板箍配箍率(sv=1.18%~2.09%)的角钢混凝土柱在低周往复荷载作用下的试验,发现试件均发生大偏心受压破坏。通过试验柱滞回曲线提取了相应的骨架曲线。在试验研究的基础上,对角钢混凝土柱正截面受力性能进行探讨,论述角钢混凝土柱基于平截面假定的正截面承载力计算公式,采用公式计算的试验柱正截面承载力与试验结果吻合较好。
- 低周往复荷载 /
- 角钢混凝土柱 /
- 钢板箍 /
- 骨架曲线
Abstract: Nine angle-steel concrete columns(ASCC) under low cyclic loading are tested,whose axial compression ratio n_0 and stirrup ratio of steel plate stirrup _(sv) are 0.33～0.42 and 1.18%～2.09% respectively.The test results show that the large eccentric failure occurs in all specimens.The hysteretic curves for 9 specimens are acquired,and through analyzing these curves,the corresponding skeleton curves are obtained.Based on test research,the flexural mechanical behavior of ASCC is discussed.The calculation formulas of the flexural bearing capacity of ASCC are presented on the basis of plane-section assumption.The flexural bearing capacity calculated by the formulas agrees well with the test results
- low cyclic loading /
- angle-steel concrete columns(ASCC) /
- steel plate stirrup /
- skeleton curve