Subdepot pier-type foundation pit support structure and construction method

Abstract

The invention discloses a subdepot pier-type foundation pit support structure and a construction method; the structure comprises soil-retaining and water-stopping row piles, piers and waist beams; at least two piers are arranged; the piers and the soil-retaining and water-stopping row piles are connected through the waist beams; the soil-retaining and water-stopping row piles comprise soil-retaining piles and water-stopping piles which are lined vertically and ring beams which are arranged on the tops of the soil-retaining piles and the water-stopping piles; each pier comprises a pier pile, a pier cover beam and an inclined support; the piers are lined vertically; the pier cover beams are arranged on the tops of the pier piles to connect all the pier piles; one ends of the pier cover beams are connected with the waist beams; each pier pile comprises an upper pier pile which is arranged at the upper part and a lower pier pile which is arranged at the lower part; and one ends of the inclined supports are connected with the waist beams, and the other ends of the inclined supports are connected with the upper pier piles. According to the subdepot pier-type foundation pit support structure and the construction method, the support in a foundation pit is eliminated, the excavation is convenient and the construction speed is high.

Description

Technical field [0001] The invention belongs to the field of civil construction engineering, and relates to a foundation pit supporting project, in particular to a silo buttress type supporting structure and a construction method. Background technique [0002] At present, in the foundation pit supporting structure, when the depth of the foundation pit is large or the geological conditions are not good, the formation of internal support is often used to design the foundation pit. For the supporting structure, the earthwork is It requires multiple backhauls and excavation is very difficult, which increases earthwork excavation costs; support construction, maintenance and support removal require time, which not only affects the construction progress, but also increases the project cost to a certain extent. Summary of the invention [0003] Technical problem: The purpose of the present invention is to provide a sub-storage buttress pier type foundation pit supporting structure and its...

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Problems solved by technology

[0002] At present, in the foundation pit support structure, when the depth of the foundation pit is large or the geological conditions are not good, the formation of internal support is often used to design the foundation pit support. For the support structure with support, the earthwork Many times of unlucky transportation is required, and the excavation is very difficult, which increases the cost of earthwork excavation; the support construction, maintenance and disassembly all take time, which not only affects the construction progress, but also increases the project cost to a certain extent

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