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本文介绍分段予应力混凝土箱梁桥当前的技术水平。概述了上部结构的一般设计要求,设计步骤,初步设计和详细设计的要求及分析步骤;介绍下部结构设计、规范、建筑工艺以及美国分段桥梁的现状等。前言考虑到交通的要求,天然障碍物的影响,节约工程用地,以及对安全和美观的需要,要求桥梁工程师提出安全而又经济的桥梁结构。当前采用最普遍的一种桥梁结构体系是
This article describes the current state of the art of prestressed concrete box girder bridges. The general design requirements, design steps, preliminary design and detailed design requirements and analysis steps of the superstructure are summarized. The design and specification of the substructure, the construction technology and the current status of segmented bridges in the United States are introduced. Preface Taking into account traffic requirements, the impact of natural obstacles, the need to conserve construction sites, and the need for safety and aesthetics, bridge engineers are required to propose safe and economical bridge structures. One of the most common types of bridge structures currently used is