| Experimental Study on the Extended Length of Negative Reinforcement Cut-in Phases in Continuous Beams |
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| 作者姓名： | Zou Zhaowen Fu Jianping Bai Shaoliang |
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| 作者单位： | Faculty of Civil Engineering |
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| 摘 要： | In this paper through the static loading tests of 6 inflexion zones and 2 cantilever zones in full-size constrained R/C beams, the stress performance in rebars cut-in-phases and subjected to negative moment is studied. The stress properties of extended length of rebars with different shear-span ratiosare analysed on basis of the full measurement of strain distributions combined with the investigation on state and regularity of the diagonal cracks development and series of new knowledge are obtained. It is found that current Concrete Design Code provisions on the extended length are inadequate for the high shear-span ratio and superfluous for the low shear-span ratio. The theoretical and experimental foundations are provided for determining proper value of extended length for rebars cut-in-phases.
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| 关 键 词： | s: reinforced concrete continuous beam extended length |
Experimental Study on the Extended Length of Negative Reinforcement Cut-in Phases in Continuous Beams |
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| Zou Zhaowen,Fu Jianping,Bai Shaoliang.Experimental Study on the Extended Length of Negative Reinforcement Cut-in Phases in Continuous Beams[J].Storage & Process,1996(2):10-19. |
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| Authors: | Zou Zhaowen Fu Jianping Bai Shaoliang |
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| Institution: | Faculty of Civil Engineering |
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| Abstract: | In this paper through the static loading tests of 6 inflexion zones and 2 cantilever zones in full-size constrained R/C beams, the stress performance in rebars cut-in-phases and subjected to negative moment is studied. The stress properties of extended length of rebars with different shear-span ratiosare analysed on basis of the full measurement of strain distributions combined with the investigation on state and regularity of the diagonal cracks development and series of new knowledge are obtained. It is found that current Concrete Design Code provisions on the extended length are inadequate for the high shear-span ratio and superfluous for the low shear-span ratio. The theoretical and experimental foundations are provided for determining proper value of extended length for rebars cut-in-phases. |
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| Keywords: | s: reinforced concrete continuous beam extended length |
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