A review of the advancement of helical foundations from 1990- 2020 and the barriers to their expansion in developing countries

Abstract

The use of piles, helical anchors, in general, helical foundations has considerably increased in the last 30 years. The adoption of this technology in the international and domestic codes of each country, as well as in research and studies, and, finally, the publication of numerous books and papers in this area, and the existence of manufacturers' products, committees, and contractors of this technology has contributed to its expansion and development. However, such methods have progressed at a very slow pace in many countries, especially in developing countries. This paper attempts to assess the global advancement of the helical foundations by reviewing 292 papers from 1990 to 2020 and comparing the related research findings. This will help clarify the issue and determine the scope of technological progress. On the other hand, collecting valuable papers in this area will make it easier for researchers to make further research.Subsequently, the characteristics of this technology are highlighted and the reasons for its lack of progress in developing countries are addressed. For this purpose, a questionnaire is sent to researchers, developers, designers, and contractors of the geotechnical projects. The purpose of this questionnaire is to specify the type of existing projects, the soil type of project site, the degree of familiarity with the helical foundation technology, the reasons for not using this method, and the solutions available to expand and develop this method. Finally, there are suggestions to develop this approach and the issues that need further research.

A State-of-the-Art Review and Numerical Study of Reinforced Expansive Soil with Granular Anchor Piles and Helical Piles

“…Numerical and experimental studies have demonstrated the behavior of helical [43][44][45][46][47][48][49][50] and granular anchor piles [25,32,[51][52][53][54]. However, studies have not examined their anchoring capabilities in expansive soil [55]. Furthermore, the studies did not emphasize comparative studies of the two types of expansive soils.…”

Shaking Table Test on Mitigation of Liquefaction-Induced Tunnel Uplift by Helical Pile

“…According to the previous studies on the acceptable performance of the helical pile in uplift resisting (Sharma and Guner 2020;Guner and Chiluwal 2021;Mahmoudi-Mehrizi and Ghanbari 2021), using the helical piles under the tunnel can be effective for mitigating the tunnel uplift. However, there is a lack of information on the uplift resistance of the helical piles in liquefied soils during an earthquake.…”

Research on Static and Dynamic Loading Performance of Geosynthetic Reinforced and Pile-Supported Embankment

“…Embankment construction for infrastructure projects has considerably increased during the past few decades in soft soil, loess, and medium-compression soil regions. Among the various ground improvement methods, geosynthetic reinforced and pile-supported (GRPS) embankments are considered to be a reliable and suitable solution for time-bound construction projects and difficult ground conditions [1][2][3][4][5][6]. GRPS embankments are piles, geogrids, and soil synergistic action of the three to bear the load; the main working principle relies on the soil arch effect and tensioned membrane effect [7].…”