Practical crack control during the construction of precast segmental box girder bridges

被引：17
|
作者：
Moon, DY
Sim, J
Oh, H
机构：
[1] Jinju Natl Univ, Dept Civil Engn, Jinju 600758, Kyeongnam, South Korea
[2] Hanyang Univ, Dept Civil & Environm Engn, Ansan 425791, South Korea
来源：
COMPUTERS & STRUCTURES | 2005年 / 83卷 / 31-32期
关键词：
construction sequence analysis; FE analysis; PC box girder; precast segmental bridge; structural behavior; temporary prestressing;
D O I：
10.1016/j.compstruc.2005.05.001
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Cracks that occurred in the bottom slab of a precast segmental bridge were investigated through a construction sequence analysis, which revealed that the cracks were caused by excessive deformation during temporary post-tensioning while joining the segments. In addition, a parametric study was performed to evaluate the effects of the prestressing sequence, bottom slab thickness, and position of the prestressing anchors. The structural behavior of the girder sections was greatly affected by the thickness of the bottom slab and the position of prestressing anchors, but not by the prestressing sequence. Based on the results, a construction method that prevents the cracks is proposed. (c) 2005 Elsevier Ltd. All rights reserved.
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页码：2584 / 2593
页数：10
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