Jet grouting soil-cement-pile strengthened pile (JPP for short) is a new type pile which is composite of jet grouting pile and prestressed concrete core pile

and achieving the powerful effect of rigid pile and low cost of flexible pile. JPP pile is used in excavation protection and other engineering

but its research on horizontal bearing behavior falls behind the engineering practice. In order to study the horizontal bearing behaviors of different combinations JPP pile

horizontal load model tests are carried out by using the home-made model test pile loading system. The test results show that: sub-portfolio II carries maximum capacity

combined with the sub-portfolio I close

under combination carries the lowest capacity level

so the more sub-portfolio combination shows that the overall horizontal bearing capacity appears. Maximum moment of JPP pile occurs at the position of 3 to 4 times diameter under core pile top and this site is relatively weak and prone to damage. So we can conclude that the soil characteristics within a certain depth below the soil surface will have a direct impact on the horizontal bearing capacity.