A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tip Post-grouting Using Smart Cells at Urubó Bridge - Premobilization and Improvement of End Resistance
This paper describes the results of the tip post-grouting that was performed to improve the nominal axial resistance of 34 bored piles for the Urubó Bridge project crossing the Piraí River in Santa Cruz, Bolivia. A Smart Cell is a closed-type tip post-grouting device that is attached to the bottom of the steel reinforcement cage of a bored pile to premobilize end resistance and reduce uncertainty. Control of the grout is maintained within the device during injection and a uniform stress is imparted across entire base area simultaneously, inducing a pre-mobilization load into the pile as well as the soil. The induced load is computed directly from the grout pressure and known geometry of the device. During the grouting process, there were noticeable differences in the grouting pressures achieved and responses observed, even within short distances between the piles, which were likely caused by the highly variable soil conditions, composition, alterations during construction and engineering characteristics. This paper will provide an overview and principles of the tip post-grouting system, the design methodology, and select grouting and static load testing results.
Tip Post-grouting Using Smart Cells at Urubó Bridge - Premobilization and Improvement of End Resistance
This paper describes the results of the tip post-grouting that was performed to improve the nominal axial resistance of 34 bored piles for the Urubó Bridge project crossing the Piraí River in Santa Cruz, Bolivia. A Smart Cell is a closed-type tip post-grouting device that is attached to the bottom of the steel reinforcement cage of a bored pile to premobilize end resistance and reduce uncertainty. Control of the grout is maintained within the device during injection and a uniform stress is imparted across entire base area simultaneously, inducing a pre-mobilization load into the pile as well as the soil. The induced load is computed directly from the grout pressure and known geometry of the device. During the grouting process, there were noticeable differences in the grouting pressures achieved and responses observed, even within short distances between the piles, which were likely caused by the highly variable soil conditions, composition, alterations during construction and engineering characteristics. This paper will provide an overview and principles of the tip post-grouting system, the design methodology, and select grouting and static load testing results.
Tip Post-grouting Using Smart Cells at Urubó Bridge - Premobilization and Improvement of End Resistance
Sustain. Civil Infrastruct.
Weng, Meng-Chia (editor) / Kawamura, Shima (editor) / Ding, Jianwen (editor) / Marinucci, Antonio (author) / Arce, Mario Terceros (author) / Herrera, Mario A. Terceros (author)
Civil Infrastructures Confronting Severe Weathers and Climate Changes Conference ; 2021 ; NanChang, China
2021-07-11
13 pages
Article/Chapter (Book)
Electronic Resource
English
| British Library Online Contents | 2000
Post-grouting grouting device for bored pile and grouting method
| European Patent Office | 2022