Joint slide-resistant pile group of hollow section combined structure and construction method thereof

Abstract

Provided is a joint slide-resistant pile group of a hollow section combined structure. The slide-resistant pile group is formed by combining a plurality of separated slide-resistant piles and a series of joint beams, a hollow structure is arranged in the middle of each slide-resistant pile, and each joint beam comprises a cross beam. Vertical beams are arranged at the two ends of each cross beam, each cross beam and the corresponding vertical beams are integrally formed, and the vertical beam at one end of each joint beam and the vertical beam at the other end of the adjacent joint beam can be tightly combined to form a structure matched with the corresponding hollow structure; and the separated slide-resistant piles are combined into the slide-resistant pile group by inserting the vertical beams at the one ends of the joint beams and the vertical beams at the other ends of the adjacent joint beams into the hollow structures together. The invention further provides a construction method of the joint slide-resistant pile group of the hollow section combined structure. The joint slide-resistant pile group has the advantages that structure is simple and safe, the construction process is high in operability, the investment of landslide treatment engineering is reduced, and economic benefits are remarkable, and has wide application and popularization prospects.

Description

technical field [0001] The invention relates to a reinforced concrete anti-slide pile used in a landslide geological disaster control project, in particular to an anti-slide pile group with a combined structure of row-by-row hollow sections and a construction method thereof. Background technique [0002] Landslide is a very serious type of geological disaster. Anti-slide piles are one of the most widely used reinforcement schemes in landslide control schemes. The mechanism of anti-slide pile reinforcement is to pass through the sliding body and the sliding bed at a certain depth, and transmit the thrust load of the sliding body to the stable sliding bed. Anti-slide piles have been widely used in engineering practice, but due to the limited bearing capacity of a single anti-slide pile, connecting individual cantilever anti-slide piles into a whole can improve the overall stiffness and enhance the anti-slide effect. [0003] At present, in landslide and slope treatment pro...

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Problems solved by technology

[0003] At present, in landslide and slope treatment projects, a single anti-slide pile has limited anti-slide ability compared to the entire landslide. Some researchers have proposed to install prefabricated reinforced concrete slabs on the back soil side of the anti-slide pile to form a pile-wall composite support system, but the prefabricated concrete retaining slabs are mainly installed on the back soil side of the anti-slide piles. The construction process is cumbersome, and the anti-slide piles cannot be closely connected. It is mainly suitable for civil engineering standard small piles and cannot be used for landslide geological disasters Implemented large cross-section anti-slide pile

Some researchers also proposed the construction method of anti-slide piles with outer isosceles trapezoidal hollow cross-sections laid out at unequal intervals. However, since the hollow cross-section is isosceles trapezoidal, local stress concentration may occur during the specific implementation process, and this scheme The interaction between adjacent piles is not considered, and the overall stiffness is not strong

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