相较于分块预制桥面板，横向全宽预应力预制桥面板的整体性更好，施工更快捷，因此在装配式组合梁桥中具有较好的应用前景。负弯矩作用下预制桥面板的湿接缝连接是受力的关键部位，因此对负弯矩作用下全宽预应力预制桥面板组合梁的力学性能进行研究，考察了横向预应力筋数量、预应力筋布置方式、剪力连接程度、接缝处材料对结构破坏模式、开裂荷载、抗弯承载力、荷载-位移曲线等力学特性的影响，揭示了预制板接缝处的应力分布规律；针对完全剪力连接的预制桥面板组合梁，提出了负弯矩作用下挠度计算的改进有效惯性矩叠加法，该方法考虑了纵横向预应力的影响，与数值分析结果吻合较好；针对部分剪力连接组合梁，对比了国内外相关规范，发现我国《钢结构设计标准》的适用性更强。

Compared with block precast bridge deck， transverse full-width prestressed precast bridge deck has better integrity， faster construction， and a better application prospect in assembled composite beam bridge. The wet joint connection of the precast bridge deck under negative bending moment is the key part of the composite beam. Therefore， the mechanical properties of full-width prestressed precast bridge deck composite beam under negative bending moment are studied， the influence of the number of transverse prestressed bars， the arrangement of prestressed bars， the degree of shear connection and the materials at the joints on the mechanical properties such as structural failure mode， cracking load， bending bearing capacity and load-displacement curve is made clear， and the stress distribution at the joints of precast slabs is revealed. An improved effective moment of inertia superposition method for deflection calculation of precast bridge deck composite beams with complete shear connection is proposed， which considers the influence of longitudinal and transverse prestress and is in good agreement with the numerical results. For composite beams with partial shear connection， the domestic and foreign codes are compared， and it is concluded that the Standard for Design of Steel Structures in China is more applicable.