Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Analytical Solution of the Grouting Migration Height for the Post-Grouted Drilled Shaft Based on the Herschel-Bulkley Model

Version 1 : Received: 30 August 2021 / Approved: 1 September 2021 / Online: 1 September 2021 (12:08:12 CEST)

How to cite: Nan, G.; Liu, H.; Zhang, Y.; Ding, W.; Cao, J.; Yan, R. The Analytical Solution of the Grouting Migration Height for the Post-Grouted Drilled Shaft Based on the Herschel-Bulkley Model. Preprints 2021, 2021090011 (doi: 10.20944/preprints202109.0011.v1). Nan, G.; Liu, H.; Zhang, Y.; Ding, W.; Cao, J.; Yan, R. The Analytical Solution of the Grouting Migration Height for the Post-Grouted Drilled Shaft Based on the Herschel-Bulkley Model. Preprints 2021, 2021090011 (doi: 10.20944/preprints202109.0011.v1).

Abstract

The traditional bored pile technology has some arduous problems, such as the sediment at the pile tip, the mud skin along the pile shaft, and the stress release due to borehole construction. The post-grouted technology at the pile tip of bored pile has emerged because of demand. The grouting migration height (GMH) is of great significance to the strengthen and reinforcement of the pile foundation. This paper derives the calculation formula of the GMH based on the theory of the column hole expansion and Herschel-Bulkley model. The influence of relevant parameters on the GMH is discussed. Aiming at the problem of the grouting migration along the pile shaft in layered soils, the iterative calculation method of the GMH is proposed. The correctness of the GMH is verified by an engineering case, which can guide the engineering practice. The result shows that the GMH increases with the increase of the grouting pressure, the pile diameter and the thickness of the mud skin, and the grouting pressure is positively correlated with the GMH. The GMH decreases with the increase of the buried depth, the consistency coefficient and the rheological index. On this basis, the correctness of the GMH is verified by an engineering case.

Keywords

Grouting migration height; Herschel-Bulkley model; Post-grouted drilled shafts; Layered soils; Iterative calculation method

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.