|
|
xx大桥设计
摘要 本文详细介绍了xx桥的设计过程，包括方案比选、总体规划设计、桥梁跨径和截面尺寸拟定。经方案比选，决定该主桥采用预应力混凝土连续梁结构，跨径组成为：80m+120m+80m，引桥采用30m预应力混凝土简支梁结构；对该桥主桥和引桥进行了详细的计算分析，主要计算内容有：恒载内力计算、活载内力计算、墩顶支反力计算、预应力配筋计算、承载力极限状态验算、正常使用极限状态验算、应力验算等，通过计算可以验证该桥各项指标都满足规范要求。
关键词 预应力，混凝土，连续梁，简支梁
ABSTRACT This article introduces the design procedure of xx bridge in detail,which consists of scheme comparison,overall planning, span drafting,and choice of sectional dimension.After comparing,prestressed concrete continuous substructure is adopted for main bridge,and the span is 80 m plus 120 m plus 80 m,and prestressed concrete simple beam substructure of 30 m for bridge approach. Carrying on detailed computational analysis to this bridge of main bridges and bridge approach,Calculating mainly the content is as follows,permanent load internal force,live load internal force,end reaction of top surface of piers,the computation of distributed prestressed steel, bears the weight of the limit state checking computations of strength,uses state checking computations of limit,stress checking computations etc. every indexes of this bridge can meet the demand of standardizing through calculating.
KEY WORDS prestress,concrete,continuous beam,simple beam
目录
