Inclined pile vertical anchor rod supporting structure for foundation pit supporting and construction method thereof

Abstract

The invention provides an inclined pile vertical anchor rod supporting structure for foundation pit supporting and a construction method thereof. The supporting structure comprises inclined slope protection piles, pile top beams and anchor rods. A row of the inclined slope protection piles are arranged on the edges of a foundation pit, and the bottoms of the inclined slope protection piles extend into the lower soil layer of the bottom of the foundation pit. The supporting structure is characterized in that the anchor rods comprise vertical pre-stress anchor rod bodies arranged in the stable soil layer between every two adjacent inclined slope protection piles and inserted and anchored in the stable soil layer from the ground between every two adjacent inclined slope protection piles, and the pile top beams are in rigid connection with the tops of the inclined slope protection piles and in flexible connection with the upper portions of the vertical pre-stress anchor rod bodies. The supporting structure and the construction method are particularly applied to the adjacent existing building foundation pits with limited underground space, and have the outstanding advantages of supporting the adjacent existing building deep foundation pits, and being good in supporting effect, convenient to construct, simple in working procedure and low in cost.

Description

technical field [0001] The invention relates to a building foundation pit support system and a construction method thereof. Background technique [0002] In the design and construction of building foundation pit support, there are common support types such as (composite) soil nail support, pile (wall) anchor support, pile (wall) support support, and two or more support types. At present, the foundation pit support of most engineering projects adopts the above support type. [0003] In recent years, with the acceleration of urban construction, the number of buildings in the urban area has increased sharply, and the building density has become higher and higher. Many buildings are being built next to and very close to existing buildings, so making full use of the land At the same time, many problems have been raised: [0004] (1) Since the newly-started building foundation pit is close to the existing building, it is difficult to choose the slope support method for the new ...

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Problems solved by technology

[0008] The object of the present invention is to provide a kind of inclined pile vertical bolt support structure and its construction method for foundation pit support which are easy to operate, simple in process, low in cost and have good support effect. The support system in the foundation pit of the existing building with limited underground space has poor support effect, cumbersome construction, complicated process and high cost technical problems

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