- Title
- The study of pull-out resistance improvement for a newly developed soil nail
- Creator
- Ye, Xinyu; Wang, Shanyong; Wang, Qiong; Sloan, Scott; Sheng, Daichao
- Relation
- 19th International Conference on Soil Mechanics and Geotechnical Engineering (ICSMGE 2017). Proceedings of the 19th International Conference on Soil Mechanics and Geotechnical Engineering (Seoul, Korea 17-22 September, 2017) p. 2231-2234
- Publisher
- International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE)
- Resource Type
- conference paper
- Date
- 2017
- Description
- Soil nailing technique is an effective way to prevent slope collapse, of which the pull-out resistance is the key factor that influences its working performance. In this case, a new soil nail which combines compaction grouting with conventional nailing method was proposed to improve the pull-out resistance. For achieving an ideal compaction grouting, a membrane was used to prevent the cement permeating into or fracturing the soil matrix, so that a relatively regular expanded cement bulb was formed to enhance the resistance during the pull-out process. In order to study the fundamental mechanism of this soil nail, a physical model system was designed and setup, which was then used to conduct the pull-out test. Afterwards, a numerical model was established and verified based on the result of the physical model test, and then more simulations were carried out to investigate the key shape factors (i.e. Length, diameter and shape angle of the cement bulk) that contribute to the improvement of pull-out resistance. The results show that the diameter of cement bulk plays the dominant role in the improvement of pull-out resistance while its length has the least influence. In addition, the shape angle can also affect the pull-out resistance increase.
- Subject
- physical mdel; numerical simulation; compaction grouting; soil nail; pull-out resistance
- Identifier
- http://hdl.handle.net/1959.13/1386494
- Identifier
- uon:32428
- Language
- eng
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