Building foundations are usually retrofitted with directly connected micropiles; however, at the present time, there different approaches for predicting shear capacity in micropile–foundation connection. At first, concrete strength was considered. Nowadays, EU countries, it is prescribed to use of interface between successive casts times. This implies a reduction connection by half, and these v...

Micro piles are small diameter pile (less than 300mm). generally used when there difficult ground conditions, such as natural or man-made obstructions, sensitive with adjacent structures, limited access/low headroom. drilled and grouted friction piles. Each includes steel elements that bonded into the bearing soil rock – usually cement grout. The stratum is logged during installation drilling t...

With the development of national economy, available land for industrial construction is becoming more and restricted, paths transmission lines transformation projects mostly pass through regions with complex geological conditions such as mountains. The drilling micropiles foundation can be widely used in mountainous areas because its strong adaptability. This paper mainly introduces characteris...