In order to study the suitability of different types of piles for diatomite foundations

deformation characteristics and protective measures of diatomite slope under rainfall

deformation characteristics of pile-raft composite foundation and subgrade bed dynamic response in diatomite

field loading test on single pile

rainfall on diatomite slope

bearing capacity of composite foundation and in-situ dynamic excitation tests were conducted on the Hangzhou-Shaoxing-Taizhou high speed railway. The result shows that CFG pile

plain concrete pile

reinforced concrete pile can be applied to diatomite foundation

whereas the screw pile is inapplicable due to compaction effect and high pressure rotary jet pile due to poor quality effect. The natural diatomite slope has connecting cracks that form network within the slope under drying-wetting cycles

resulting in insufficient shallow stability. The arch-shaped skeleton revetment has a better protective effect on the diatomite slope

while drilling during the construction of anchor frame beam will lead to the softening of diatomite

which is not suitable for the protection of diatomite slope. The CFG and plain concrete pile-raft composite foundation can satisfy the requirement for deformation control

and the structural integrity of concrete pile raft is better between the two types of piles. The capillary drainage layer has a good drainage effect

which ensures that the water can be discharged in time to avoid the adverse impact on the diatomite foundation.