摘要
为提高公路桥梁整体承载力,满足交通出行需要,文中结合某双向四车道公路桥梁设计桥梁拼宽方案,研究了改扩建公路预应力空心板桥梁拼宽设计。结果显示,该拼宽设计方案在较大行车载荷下仍然可以保持较低的挠度与冲击系数,说明经拼宽处理后的桥梁具有较高的耐冲击性,且在拼宽施工过程中横梁的剪力逐渐减小,证明该拼宽方案可以解决横梁截面的错位变形问题。
In order to improve the overall bearing capacity of highway bridges and meet the growing needs of transportation in today's society,this article combines a bridge widening plan for a two-way four lane highway bridge design,and studies the widening design of prestressed hollow slab bridge beams for reconstruction and expansion of highways.The results show that the widening design scheme can still maintain low deflection and impact coefficient under large driving loads,indicating that the bridge after widening treatment has high impact resistance,and the shear force of the beam gradually decreases during the widening construction process,proving that the widening scheme can solve the problem of displacement deformation of the beam section.
作者
党志鹏
Dang Zhipeng(Gansu Architectural Design and Research Institute Co.Ltd.,Lanzhou,Gansu 730000)
出处
《江西建材》
2023年第9期149-150,153,共3页
Jiangxi Building Materials
关键词
改扩建公路
预应力空心板
桥梁拼宽
Reconstruction and expansion of highway
Prestressed hollow plate
Width of bridge
