With the development of foundation pit scale toward larger and deeper

the traditional single pile

the pile anchor supporting structure

pile brace are subject to certain restrictions

in the case of higher control requirements in the deformation and which should not be used within support and anchor

double-row piles can play a better role. Double-row piles consist of two rows of parallel retaining piles

top beam and connecting beam formed a space envelope system. High stiffness

good stability

small deformation and benefit for erect excavation are the strengths

so double-row piles are widely used in deep foundation pit engineering. In the new specification Technical Specification for Engineering of Foundation Excavation (DB42/T159-2012) increases the foundation retaining structure with double-row piles in related chapters. On the basis of the double-row piles calculation model proposed in the new pit specification of Hubei province

a simple

practical design and calculation software of double-row piles for foundation pit (hereinafter referred DESDROP) has been developed by VB.NET. The research and development of this software is to cooperate with new rules for implementation. The displacement

internal force and stability of the double-row piles are analyzed by the software; and the soil pressure

displacement

bending moment

shear force diagram also can be seen through the query result under any working conditions. The software has been applied to Jindimingjun foundation pit engineering. The results show that the operation speed of DESDROP software is fast

calculation results can meet the needs of the double-row piles supporting design.