Shear Capacity of Concrete Beams under Sustained Loading
Shear Capacity of Concrete Beams under Sustained Loading
复制标题
持续荷载下混凝土梁的抗剪承载力
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
C. Braam
中科院分区：
文献类型：
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作者：
R. Sarkhosh;J. Walraven;J. Uijl;C. Braam
在气候控制条件下，进行了两年多接近极限抗剪承载力(荷载率在87%~95%之间)的长期试验，结果表明，持续荷载对无抗剪钢筋混凝土梁的抗剪承载力没有显著影响。虽然出现了许多弯曲和剪切裂缝，但梁的承载时间很长。试验表明，裂纹只在加载后的几天内形成，但一周后裂纹稳定并进入休眠状态。
Long-term tests on large-scale concrete beams without shear reinforcement, which are tested for more than two years under sustained loading close to the ultimate shear capacity (load ratio ranging from 87% to 95%) under climate controlled condition, show that sustained loading has no significant effect on the shear capacity. Although many flexural and shear cracks develop, the beams carry the load for a long time. The tests show that crack formation takes place only within some days after the load application, but after a week the cracks stabilize and become dormant.