Prefabricated prestressed concrete anchorage pier for slope strengthening and manufacturing and construction methods thereof

Abstract

The invention provides a prefabricated prestressed concrete anchorage pier for slope strengthening and manufacturing and construction methods thereof. The prefabricated prestressed concrete anchoragepier comprises a prestressed concrete anchorage pier unit provided with a cross beam and a longitudinal beam which are crossed into a cross shape, concrete ribs located on the periphery of the prestressed concrete anchorage pier unit, and an anchorage head part located at the crossed position of the cross beam and the longitudinal beam; and prestressed reinforcements are arranged in the cross beamand the longitudinal beam. The prefabricated prestressed concrete anchorage pier adopts prestressed concrete lattice beams, the section property of the beams can be improved, larger anchorage force is borne, and the defect that when traditional cast-in-place reinforced concrete lattice beams are under large anchor cable anchorage force, the midspan positions of the reinforced concrete lattice beams can be pulled cracked possibly, and consequently the rigidity of components is lowered is overcome; and according to the prefabricated prestressed concrete anchorage pier, a manufacturing process can further be simplified, mounting is convenient, adjusting is easy during mounting, the construction period is shortened, and the construction cost is saved.

Description

technical field [0001] The invention relates to the technical field of slope reinforcement and ecological restoration, in particular to a prefabricated prestressed concrete anchor pier for slope reinforcement and a manufacturing and construction method thereof. Background technique [0002] my country is a mountainous country. Plateaus, hills and mountains account for about 70% of my country's land area. A large number of landslides, collapses and mudslides occur every year. Furthermore, when leveling the site in civil engineering, large excavation and grading of the mountain are often encountered, and the surrounding mountains need to be cut, and the cutting operation will destroy the original balance. In order to ensure the safety of the slope and its environment, support, reinforcement and protection measures must be taken for the slope. Slope anchor (cable) lattice reinforcement technology has significant advantages such as flexible layout, various lattice forms, conven...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the anchor (cable) lattice beam is used to reinforce the slope, the construction method of the concrete lattice beam is usually cast-in-place, and its disadvantages are: (1) when the cast-in-place lattice beam is made, Due to the many processes such as slope excavation, formwork processing, steel bar binding, concrete pouring, and maintenance, and the overall degree of mechanization of the construction process is low, the required construction period is relatively long; (2) There are many on-site pouring processes and many influencing factors , so that the quality of cast-in-place concrete lattice beams cannot be guaranteed; (3) the tensioning of prestressed anchor rods (cables) must wait until the external anchor structure reaches the design strength before proceeding, and the overall construction period is often due to the external anchor structure (4) When the traditional cast-in-place reinforced concrete lattice beam encounters a large anchorage force, it may be cracked at the mid-span position, resulting in a decrease in component stiffness and affecting the overall stability

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