SPATIAL DEFORMATION |OF TOP BRACED PILE RETAINING SYSTEM |FOR STABILIZING LONG STRIP FOUNDATION PIT

The expression of the potential energy of the total piles in row with top brace retaining system in long strip foundation pit is established. According to the minimum potential theory, a solution to the maximum displacement of the top beam and the pile is derived. Then the expression of the piles in row with the top brace is given. The effects of the retaining structural parameters on the maximum displacement are discussed. At last, a practical example is presented. The calculated result is compared with the measured result. The comparison shows the method is feasible．