The investigation of earthquake damage shows that the pile foundation in liquefiable soils has been severely damaged in many destructive earthquakes. In view of the prominent problem of pile foundation disaster induced by soil liquefaction

many scholars have adopted multiple research methods to explore the earthquake damage mechanism of pile foundation in liquefiable soils

aiming to meet the urgent need of aseismic design of pile foundation in liquefiable soils. And they have obtained fruitful and important research results

revealing the failure modes of pile foundation in liquefiable soils

such as bending failure

buckling failure and settlement failure. This study surveys and analyzes the typical cases of pile foundation earthquake damage in liquefiable soils

and summarizes the manifestations and failure types of pile foundation earthquake damage. On this basis

the paper dissects progress of different earthquake failure mechanisms of pile foundation

and points out the key and difficult points in the current research. Finally

the insufficiency and challenges of seismic research on pile foundation in liquefiable soils are revealed

and the further research directions are given. This work can provide some useful reference for the researchers

and it is beneficial to the development and perfection of seismic theory of pile foundation in liquefiable soils.