It is very difficult to measure the lateral load on the micropile in-situ

so the load transfer behavior and the stress characteristics are incomplete; so that numerical simulation of the flexible micropile (l/d more then 50 in general) with finite element software ABAQUS is made. The numerical analysis results are consistent with field measured results

so as to prove that the simulation parameters are effective and correct. They can reflect the field actual situation perfectly. Using finite element numerical simulation

the mechanical behavior of micropiles subjected to horizontal load

and parameters influencing on the lateral bearing capacity of micropile are discussed. Finally

some reasonable values of the pile length

pile diameter

elastic modulus and so on

are given. It is shown that the more larger diameter and the larger friction angle of soil

the more larger lateral bearing capacity of micropiles.