Manufacturing and construction method for slope reinforcing assembled pre-stressed anchor cable frame beam

Abstract

The invention relates to a manufacturing and construction method for a slope reinforcing assembled pre-stressed anchor cable frame beam. The slope reinforcing assembled pre-stressed anchor cable framebeam can improve the section performance of the beam and bear a larger anchoring force, and overcomes the defect that the rigidity is reduced as reinforcing steel bars of members in precipitation frequent areas because a conventional cast-in-situ reinforced concrete lattice girder is subjected to a relatively large anchoring force of an anchor cable. The mechanical property is improved greatly. The thickness of the beam body or the stressed reinforcing steel bars can be further reduced, and the utilization of materials is improved, so that the beam is more economical. The pre-stressed anchorcable frame beam is formed by splicing a plurality of prefabricated beam body units which are manufactured more easily, mounted more lightly and adjusted more easily when being mounted, so that the construction period is shortened greatly.

Description

technical field [0001] The invention relates to the technical field of transportation engineering, in particular to a manufacturing and construction method of an assembled prestressed anchor cable frame beam used for slope reinforcement. 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. In addition, 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. [0003] Slope anchor (cable) cable-lattice reinforcement technology has significant advantages such as flexible layout, various lattice forms, convenient cros...

AI Technical Summary

Problems solved by technology

[0004] (1) During the manufacture of cast-in-place lattice beams, 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;

[0005] (2) There are many on-site pouring procedures and many influencing factors, so that the quality of cast-in-place concrete lattice beams cannot be guaranteed;

[0006] (3) The tensioning of the prestressed anchor (cable) can only be carried out after the outer anchor structure reaches the design strength, and the overall construction period is often seriously delayed due to the maintenance of the outer anchor structure;

[0007] (4) When the traditional cast-in-place reinforced concrete lattice beam encounters a large anchoring force of the anchor cable, it may be cracked at the mid-span position, resulting in a decrease in the stiffness of the member and affecting the overall stability

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