Using the composite stiffness principle and double parameters method

and choosing suitable parameters

ground displacement

angle and maximum bending moment of laterally loaded pile with four kinds of section types such as reinforced concrete pipe pile

reinforced concrete circular pile

reinforced concrete rectangular pile and steel tube confined concrete pile in different engineering geological conditions are calculated. Crack width of reinforced concrete pile and strength of steel tube confined concrete pile are checked; analysis and comparison of bearing capacities of long piles with different kinds of section types under same laterally loads in different engineering geological conditions are also made. These results can be used for optimum design of reasonable section type of laterally loaded piles of large building structures. The comprehensive evaluation shows that the reinforced concrete pipe pile is better for sand soil and clay soil; steel tube confined concrete pile is better for weathered rock.