长挑臂预应力混凝土盖梁施工过程中的应力控制  

Stress Control of Long Cantilever PRC Cap Beam in Construction Process

作　　者：陈云才 许俊[2] 顾祥林[2] 

机构地区：[1]宁波市市政工程前期办,宁波315000 [2]同济大学,上海20092

出　　处：《结构工程师》2002年第3期42-46,共5页Structural Engineers

摘　　要：本文以宁波永丰桥引桥预应力混凝土盖梁为例 ,介绍了如何根据理论分析来确定长悬臂预应力混凝土盖梁预应力束张拉方案以控制梁中混凝土的应力。In this paper, the optimizing method to determine the tensioning procedure of tendons in a long cantilever prestressed concrtete cap beam through theoretical calculation is introduced, according to the case analysis of the bridge approach of Yongfeng Bridge in Ningbo. By optimizing the prestressing procedure of tendons in a long cantilever prestressed concrete cap beam, the stress of concrete in the beam is controlled in the construction process of the bridge. The theoretical analysis method is verified by the monitoring results of the bridge in the construction.

关 键 词：预应力 长挑臂盖梁 施工过程 应力控制 

分 类 号：TU757[建筑科学—建筑技术科学]