横隔板含上缘过焊孔的钢桥面UHPC加固结构计算与试验研究OA
Calculation and Experimental Study on UHPC Reinforcement of the Steel Bridge Deck on the Upper Welding Holes of the Diaphragm
基于Ansys子模型技术有限元分析计算了原钢桥面与UHPC加固后组合桥面中上缘过焊孔的疲劳细节应力,其中横隔板-面板焊接细节的名义应力最大,达188.7 MPa,开裂风险极高.采用钢-UHPC组合桥面结构加固后,该细节的名义应力降至25.4 MPa,降幅达86.5％,但UHPC层最大拉应力达14.3 MPa.由此开展了不同配筋形式的钢-UHPC组合桥面结构抗弯参数试验,试验结果表明:钢筋间距为50 mm的钢-UHPC组合桥面板,其UHPC层抗裂强…查看全部>>
Based on the sub modeling technique of Ansys,a finite element analysis was conducted to calculate the fatigue detail stress at the upper cutouts in both the original steel bridge deck and the composite bridge deck rein-forced with UHPC.The nominal stress at the diaphragm-deck welding detail was found to be the highest,reaching 188.7 MPa,indicating a very high risk of cracking.After reinforcement with the steel-UHPC composite deck,the nominal stress at this d…查看全部>>
喻满;王洋
湖南中路华程桥梁科技股份有限公司,湖南湘潭 411100湖南科技大学土木工程学院,湖南湘潭 411201
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桥梁钢桥面UHPC加固结构横隔板过焊孔抗弯试验
bridgesteel bridge deckUHPC reinforcementdiaphragmwelded holebending test
《市政技术》 2024 (8)
56-63,8
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