论文部分内容阅读
Conventional improve PCC PCC pile technique capacity,has been widely used as embankment piles for highway construction in China.To further the pile of the expansive concrete the technique pile has been applied the to the PCC pile well to replace the normal concrete recently.The use expansive concrete for PCC could which increase allows pile diameter as pile as the contact higher pressure capacity at the the pile-soil interface due to the expansion paper process of concrete,the improved improved PCC PCC to provide than conventional The PCC pile.This presents a theoretical PCC model for the new pile using expansive cylindrical concrete cavity technique.model is formulated by assuming the pile with installation soil process as large strain is undrained expansion and the subsequent pile shaft with expansion combined consolidation process simulated by is the used small to strain cylindrical problem cavity cavity expansion expansion method combined strain-controlled consolidation.model,Then,similarity solution technique solve the of in modified cam Clay(MCC)while the strain-controlled consolidation is calculated through the finite pile difference(FDM).Subsequently,comparing the suitability of PCC the pore cavity expansion solution in the interpretation of the PCC field installation The is verified by and the calculated excess the pressure with the and measured subsequent value pile in an instrumented expansion test.stress means changes of excess study.concrete pore The pressure proposed during pile installation first shaft are investigated of by pile parametric theoretical model reveals and quantifies developing the fundamental mechanism the PCC using pile expansive technique and it provides a theoretical basis for design methods of the new improved PCC in the future.
Conventional improve PCC PCC pile technique capacity, has been widely used as embankment piles for highway construction in China .o further the pile of the expansive concrete the technique pile has been applied the to the PCC pile well to replace the normal concrete recently.The use expansive concrete for PCC could which increase permitted pile diameter as pile as the contact higher pressure capacity at the pile-soil interface due to the expansion paper process of concrete, the improved improved PCC PCC to provide than conventional PCC pile.This presents a theoretical PCC model for the new pile using expansive cylindrical concrete cavity technique.model is formulated by assuming the pile with installation soil process as large strain is undrained expansion and the subsequent pile shaft with expansion combined consolidation process by is the used small to strain cylindrical problem cavity cavity expansion expansion method combined strain-controlled consolidation. model, Then, similarity solution technique solved the of in modified cam Clay (MCC) while the strain-controlled consolidation is calculated through the finite pile difference (FDM). Sub won, comparing the suitability of PCC the pore cavity expansion solution in the interpretation of the PCC field installation The is verified by and the calculated excess value pressure with the and the following subsequent value of pile in an instrumented expansion test. Means the changes of excess study. Condensed pore The pressure proposed during pile installation first shaft are investigated of by pile parametric theoretical model reveals and quantifies developing the fundamental mechanism the PCC using pile expansive technique and it provide a theoretical basis for design methods of the new improved PCC in the future.