PROBLEM TO BE SOLVED: To provide a subsurface structure skeleton construction method capable of improving construction efficiency when a skeleton is constructed in subsurface compartmentSOLUTION: A subsurface structure skeleton construction method according to this invention is used to construct box culvert (skeleton) 1 in a subsurface compartment 3 formed by drilling between a pair of earth retaining walls 4, 5 facing each other The method comprises: a wale installation process to install a pair of wales, which extend in a lateral direction perpendicular to a vertical direction along each earth retaining wall and face each other, in the subsurface compartment 3; and a short strut installation process to install a short strut 30 that connects the wales 20 each other The wale 20 has a precast part (first precast part) 21 formed of precast block The precast part 21 forms at least a part of the box culvert 1SELECTED DRAWING: Figure 2

The invention relates to a metro station deep foundation pit combined type support construction method which comprises the following steps: 1, prefabricating a pile top beam and a support beams I; 2 carrying out support pile construction; 3, laying the pile top beam; 4, laying the support beam I; 5, excavating foundation pit soil mass; 6, laying a support beam II; 7, laying a slant water drain pipe; 8, adding a rib layer and a mortar layer; and 9, laying a wall surface water drain pipe. The metro station deep foundation pit combined type support construction method has the following benefits:the pile top beam and the support beams I are prefabricated according to the design requirements, so that the site construction efficiency is improved, and the project construction period is shortened; in addition, a displacement control body and an expansion filling body are arranged between the connected support beams I to apply jacking pressure to the support beams I and to reduce flexural deflection of the support beams I; and a rib plate and a connecting screw rod I are pre-arranged on the outer side of a support pile reinforcement cage, so that the pulling resistance of the connecting screw rod I is effectively promoted, the construction difficulty of a rear connecting piece is lowered, and the site construction efficiency is improved.

Metro station deep foundation pit combined type support construction method

The invention discloses a support method applied to building of a row pile foundation pit. The support method applied to building of the row pile foundation pit comprises the following steps that protection is conducted, pilling alignment is conducted, a device is prepared, and pile sinking construction is conducted. The support method applied to building of the row pile foundation pit has the beneficial effects that static pile loading is used for row pile construction, noise pollution elimination is helped, the construction progress is speeded up, the construction efficiency is improved, theconstruction period is shortened advantageously, and the cost is lowered advantageously.

Support method applied to building of row pile foundation pit

Subsurface structure skeleton construction method

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Subsurface structure skeleton construction method

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Metro station deep foundation pit combined type support construction method

Support method applied to building of row pile foundation pit