简支梁桥新型桥面连续构造设计与应用

Design and Application of New Continuous Bridge Deck Structure for Simple-Supported Beam Bridge

摘要:

针对目前简支梁桥桥面连续构造病害多发的现状，在综合分析传统桥面连续构造的受力模式和破坏机理后，发现造成桥面连续构造病害的内在因素是各种外力的共同作用使得桥面连续构造受力复杂，易造成应力集中；外在因素则是设计的缺陷和计算分析的不全面，使其构造和配筋随意性较大。为了解决以上问题，提出了一种构造和受力均简单明确的桥面连续构造创新设计。该设计可使新型桥面连续构造受力简单明确，构造尺寸和配筋设计有的放矢，克服传统桥面连续结构受力复杂、计算分析不清、构造和配筋随意性大、耐久性差、病害多发的缺陷，从而为简支梁桥面连续结构的设计和应用提供新的参考。

Abstract:

In response to the frequent occurrence of disease in continuous bridge deck structures of simple-supported beam bridges, after the comprehensive analysis on the force mode and failure mechanism of traditional continuous deck structures, it is found that the internal factor causing the disease of the continuous structure of the bridge deck is the combined effect of various external forces, which makes the force on the continuous structure of the bridge deck complex and prone to stress concentration. The external factors are the design flaws and incomplete calculation and analysis, which make the structures and reinforcement rather arbitrary. To solve the above problems, an innovative design of continuous bridge deck structure with simple and clear structure and force application is proposed. The design can make the force of the new continuous bridge deck structure simple and clear, and the structure dimensions and reinforcement design be targeted. And the design can overcome the shortcomings of traditional continuous bridge deck structures, such as complex stress, ambiguous calculative analysis, high arbitrary structure and reinforcement, poor durability and frequent distress, which can provide a new reference for the design and application of continuous deck structure of simple-supported beam bridges.