型桥台是公路桥梁下部结构常用的构造，在工程实践中，U型桥台常常出现开裂。
The U-shaped abutment is a common structure of infrastructure. However, the cracks often appear during the practice.
本文就城市桥梁设计中的桥梁上、下部结构及桥面系结构设计中的几个问题进行讨论。
This paper discusses some problems about bridge superstructure, bridge substructure and bridge decking of city bridge design.
结构计算：含桥梁上下部结构的静力、动力及屈曲稳定计算。
Structure calculation: include the static, dynamical and flection stabilization computation of bridge 's superstructure and the substructure.
桥梁支座是连接桥梁上下部结构的纽合点，受野外环境影响而容易损坏。
The bearings of bridge are the binding points connecting the superstructure to the substructure, which are easy to damage due to the effect of field environment.
本文阐述了哈尔滨市南极街立交桥工程设计标准。地质概况、桥梁结构型式、上部结构，下部结构及桥下道路设计。
Design standard, geological conditions, structure type, upper structure, under structure of crossing bridge and road design under it in Nanji street of Harbin are expounded in this paper.
对于墩顶固结桥梁或其他刚架结构物，在荷载作用下，上下部结构将共同受力、共同变形。
When the pier top of a bridge or the rigid-framed structure is under the action of a loading, its superstructure and substructure will be Subject to the force and be deformed simultaneously.
因下部结构变位、承载力下降或损坏造成桥梁无法正常运营、报废或坍塌的例子不胜枚举。
The examples that bridges get damaged or can't wok normally owing to the movement of infrastructure, the decline of carrying capacity are ubiquitous.
因下部结构变位、承载力下降或损坏造成桥梁无法正常运营、报废或坍塌的例子不胜枚举。
The examples that bridges get damaged or can't wok normally owing to the movement of infrastructure, the decline of carrying capacity are ubiquitous.
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