Strength-controllable cement soil composite pile and design method

The invention relates to the technical field of civil engineering foundations, and particularly relates to a strength-controllable cement soil composite pile and a design method. The strength-controllable cement soil composite pile comprises a peripheral cement soil pile, wherein a core pile precast pile is arranged in the peripheral cement soil pile; the bottom of the core pile precast pile is connected with a connecting plate; a grouting bag comprises a grouting pipe; and the grouting pipe is in threaded connection with the connecting plate. The strength-controllable cement soil composite pile adopts the grouting bag to replace cement soil without a core pile section, and realizes controllable quality of a pile body at the bottom end of a core pile, improves the strength, shortens the length of the core pile precast pile, is low in manufacturing cost, and saves the cost compared with a traditional cement soil core inserting composite pile. 本公开涉及土木工程地基基础技术领域，具体的涉及一种可控强度水泥土组合桩及设计方法。本发明公开了一种可控强度水泥土组合桩，包括外围水泥土桩