题名: |
Crack Control for Ledges in Inverted 'T' Bent Caps. |
作者: |
DHONDE, H.; HSU, T. T. C.; ZHU, R. R. H. |
关键词: |
CAPS(SUPPORT); CRACKING; RESEARCH REPORTS; SUMMARY REPORT |
摘要: |
Inverted 'T' bent caps are used extensively on Texas bridges because they are aesthetically pleasing and offer a practical means to increase vertical clearance. The cross-section of an inverted 'T' bent cap consists of a 'web' with short cantilever 'ledges' at the bottom to support the bridge girders, thus minimizing the structural depth of bridges. The problem is that at service load unacceptable diagonal cracking frequently occurs between the cantilever ledges and the web. In addition to giving the appearance of structural distress, excessive crack widths can lead to the corrosion of reinforcement and the shortening of service life of bridges. |
报告类型: |
科技报告 |