Abstract:For research the relationship between pressure and displacement of retaining structure

a method for calculating the non-limited active earth pressure of retaining structures under the influence of the external wall of basement was proposed. Based on the unloading path

the mechanical parameters of soil and the displacement relationship and the non-limited active earth pressure coefficient were deduced. Then

the stress state method and the forces equilibrium method were used to solve the non- limited active earth pressure

and by comparing indoor physics experiments

the results of the stress state law were relatively closer to reality than forces equilibrium method. Based on the variation of active earth pressure of retaining structure

the influence of displacement ratio

two walls pacing

wall friction angle and cohesive force on earth pressure distribution

resultant force and overturning moment were discussed. The comparison between the results of the physical experiments and numerical examples and theoretical calculation method of the soil pressure and torque showed that the calculation method is reasonable and feasible

which provides a basis for further study of the non-limited active earth pressure theory.