Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)

<Previous Article In Volume
Next Article In Volume>

Key Technologies for the Cushion Cap Construction of the Longshan Highway Bridge

Authors
Yuan Yin1, Dengwu Li1, Yin He1, Shufan Cheng1, *
1Hubei Province Road and Bridge Co. Ltd., 38# Dongfeng Avenue, Wuhan, Hubei, 430056, China
*Corresponding author. Email: chengshufan@whu.edu.cn
Corresponding Author
Shufan Cheng
Available Online 28 July 2025.
DOI
10.2991/978-94-6463-793-9_29How to use a DOI?
Keywords
beam bridge; massive concrete; double-wall steel boxed cofferdam
Abstract

Longshan Bridge is located on the mainstream of the Han River in the Danjiangkou Reservoir. The main bridge takes a 6-span prestressed concrete continuous beam with a solid pier and bored piles as the foundation. The construction of piers 7 #~9 # of the main bridge, which are far away from the riverbank, adopts the scheme of first boxed cofferdam and then pile. In this scheme, the zone of the boxed cofferdam was located by the positioning device on the nearby completed pier, and the boxed cofferdam was installed. Then, the new piles were derived by a vibration hammer combined with a floating sleeve. The concrete volume for a pier is 4937.52m3, which makes the temperature hard to control during the pouring process. Therefore, the water cycle pipe system is used for mass concrete cooling, and thermal destruction is almost eliminated because of the reasonable pipeline distribution. In this paper, the double-wall steel boxed cofferdam technology and concrete temperature control technology for the large-volume cushion cap were introduced. Then, by combining numerical simulation and on-site monitoring, the key points of such technology were analysed and discussed.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

<Previous Article In Volume
Next Article In Volume>
Volume Title
Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
Series
Atlantis Highlights in Engineering
Publication Date
28 July 2025
ISBN
978-94-6463-793-9
ISSN
2589-4943
DOI
10.2991/978-94-6463-793-9_29How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Yuan Yin
AU  - Dengwu Li
AU  - Yin He
AU  - Shufan Cheng
PY  - 2025
DA  - 2025/07/28
TI  - Key Technologies for the Cushion Cap Construction of the Longshan Highway Bridge
BT  - Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
PB  - Atlantis Press
SP  - 315
EP  - 326
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-793-9_29
DO  - 10.2991/978-94-6463-793-9_29
ID  - Yin2025
ER  -