On-Site Manufacturing Method for Pre-Tension U-Type Pre-Stressed Concrete Girders and Analytical Performance Verification of Anchoring Blocks Used for Applying Tension Force

Development of U-type pre-stressed girders has been attempted to increase the length of I-type girders in South Korea. However, a length of 30 m or less is common because the self-weight, according to the post-tension method, is large. In this study, the pre-tension method was applied without limiti...

Full description

Saved in:
Bibliographic Details
Published in:Applied sciences 2022-12, Vol.12 (23), p.11892
Main Authors: Seo, Dong-Woo, Park, Sangki, Park, Ki-Tae, Jang, Hyun-Ock, Shin, Yeon-Woo
Format: Article
Language:English
Subjects:
Bridge construction
Bridge decks
Cast in place
Concrete
Concrete slabs
Construction industry
Design
Elongation
Girder bridges
Girders
Highway construction
Hydraulics
internal reaction arm
Manufacturing
on-site manufacturing
Onsite
performance verification
pre-stressed concrete U-type girder
pre-tension
Pretensioning
Production methods
Reinforced concrete
Rigidity
Tension
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Development of U-type pre-stressed girders has been attempted to increase the length of I-type girders in South Korea. However, a length of 30 m or less is common because the self-weight, according to the post-tension method, is large. In this study, the pre-tension method was applied without limiting the post-tension method to induce a reduction in self-weight and in the materials used because of the decrease in the cross section. In addition, the authors proposed an application of an on-site pre-tensioning method using the internal reaction arm of a U-type girder. A pre-stressed concrete U-type girder bridge is composed of a concrete deck slab and a composite section. Structural performance characteristics, such as resistance and rigidity, were improved compared to those of the PSC I-type girders. Construction safety is also improved in the manufacturing and installation stages, and the elongation ratio is reduced because of the reduction in the weight of the girders. Therefore, it is possible to ensure the aesthetic landscape and economic efficiency of bridges. As a result, it is expected that efficient construction will be possible with high-quality factory-made and cast-in-place members. In this study, the pre-tension method is introduced in the field, and the analytical performance of the anchoring block used for tension is verified.
ISSN:2076-3417
2076-3417
DOI:10.3390/app122311892