Mechanical Characteristics of Concrete Bottom Slab in Elevated Pile Cap Steel Boxed Cofferdam in a Bridge

DOI

10.2991/iccet-15.2015.30How to use a DOI?

Keywords

bridge engineering, elevated pile cap foundation, steel boxed cofferdam, concrete bottom slab, force analysis

Abstract

Mechanical characteristics of concrete bottom slab in elevated pile cap steel boxed cofferdam in a bridge is studied. Taking Yuanshui bridge as an engineering example, the loading process of a precast reinforced concrete bottom slab, a part of a steel suspension box cofferdam using dry sealing and embosoming an elevated pile cap, is analyzed by means of FEM numerical simulation. The model built simulates the changes of the stress and deformation of the slab in each construction phase. The results show that the safety of construction process is ensured by thickening some parts with high stress and large deformation around the pile hole in the slab formwork. Meanwhile, instead of steel formworks, precast slab-forms for the cofferdam don’t need disassembling and steel is saved. At the same time it speeds up the construction progress and reduces the cost.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Wenjing Wang
AU  - Bin Liang
AU  - Weiwei Chen
PY  - 2015/11
DA  - 2015/11
TI  - Mechanical Characteristics of Concrete Bottom Slab in Elevated Pile Cap Steel Boxed Cofferdam in a Bridge
BT  - Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015
PB  - Atlantis Press
SP  - 154
EP  - 157
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccet-15.2015.30
DO  - 10.2991/iccet-15.2015.30
ID  - Wang2015/11
ER  -