中小跨径桥梁结构的设计要点探讨中小跨径桥梁结构的设计要点探讨 摘要：桥梁是交通线路中的重要组成部分，特别是现代高等级公路的修建中，桥梁建设往往是左右全线早日通车的关键。在高速公路设计中，中小跨径桥梁占沿线构筑物比例大，但长期以来，由于其结构相对简单，技术成熟，在设计时往往只是沿用原设计图纸，而没有具体情况具体分析，造成施工阶段问题频出，虽然只是小问题，但因其数量多，处理起来工程量大，对整个工程造价及工期影响大。因而做好中小跨径桥梁的结构设计意义重大。本文首先归纳了中小跨径桥梁结构设计中存在的问题，然后对其构造设计、钢束布置形式和基础设计做了详细的阐述。 关键词：桥梁；中小跨径；预应力连续箱梁；钢束布置；基础 Abstract: the bridge is an important part of traffic lines, especially in the modern construction of high-grade highway and bridge construction can be key to around all traffic as soon as possible. In the highway design, small and medium span Bridges structure along the big percentage, but for a long time, because of its relatively simple structure, mature technology, when the design is often just follow the original design drawings, and no particular case is particular analysis, resulting in construction stage problems mount, though only small problems, but because of its quantity, to handle large quantities of great influence on the whole project cost and time limit for a project. Which do small and medium span Bridges structure design is of great significance. At first, this paper summarizes the problems existing in the medium and small span bridge structure design, and then the structure design, steel beam layout and foundation design in detail in this paper. Key words: Bridges; Small and medium span; Prestressed concrete continuous box girder; Steel beam layout; basis 中图分类号：U442.5+9 文献标识码：A 文章编号：2095-2104(2025) 中小跨径桥梁结构设计中存在的问题 （一）承载力设计中的...
