| Author Name | Affiliation | | GUAN Jun-feng | School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China
School of Civil Engineering and Communication,North China Institute of Water Conservancy and Hydroelectric Power,Zhengzhou 450011,China | | ZHAO Shun-bo | School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China
School of Civil Engineering and Communication,North China Institute of Water Conservancy and Hydroelectric Power,Zhengzhou 450011,China | | HUANG Cheng-kui | School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China |
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| Abstract: |
| In order to meet the requirement of structural inspection,the crack spacing and crack width at various heights in the tensile zone of six large depth reinforced concrete beams were measured under several loading levels of serviceability state.The effects of the depth of normal section beams on the crack spacing and crack width were analyzed,and the modified model is proposed for calculating the average crack spacing by thinking about the depth of normal section,the reinforcement arrangement and the effective reinforcement ratio.The relationships of crack widths at any position in the tensile zone and at the reinforcement level on the side surface of beam were studied.By theoretical and statistical analysis,a method is proposed to calculate the ratios of crack widths between any position and the reinforcement level on the side surface of large depth reinforced concrete beams. |
| Key words: reinforced concrete beam large depth of normal section crack elongation average crack spacing ratio of crack width |
| DOI：10.11916/j.issn.1005-9113.2010.05.006 |
| Clc Number:TU375.1 |
| Fund: |
