A ground anchor tension string beam type debris flow grid dam and its construction method

Abstract

The invention discloses a ground anchor beam string structure type debris flow grille dam and a construction method thereof. The grille dam comprises stand columns, a foundation beam, vertical pre-stressed anchors, beam string self-balancing structure systems and vertical rods. The stand columns and the vertical pre-stressed anchors are buried underground, and corbels are arranged on the stand columns at certain distances correspondingly; the foundation beam is flush with the ground surface; the vertical pre-stressed anchors are fixed into the foundation beam; and each beam string structure self-balancing structure system is composed of stretching ropes, beam string structures, supporting rods and sliding supports and placed on the corbels, and the vertical rods are arranged horizontally at intervals and connected with the beam string structures to form a grille. According to the ground anchor beam string structure type debris flow grille dam and the construction method thereof, the beam string structure self-balancing structure systems are clear and definite in force transfer, the structure performance under stress is improved, the structure overall impact resistance is improved,the structure is guaranteed to be safe and reliable, reasonable performance under stress enables the size of a section of a structural member to be greatly reduced, the cost is saved, and the ground anchor beam string structure type debris flow grille dam is novel in structure form and facilitates site construction assembling and later-period operation and maintenance.

Description

technical field [0001] The invention relates to the field of debris flow prevention and control engineering, in particular to a ground-anchored string beam type debris flow grid dam and a construction method thereof. Background technique [0002] my country is a mountainous country, especially in the western region, where debris flow disasters occur frequently. With the acceleration of infrastructure construction, more and more highways and long-term railway projects will suffer from debris flow hazards. In recent years, the concepts of water-rock separation and energy dissipation and anti-scour prevention have gradually gained attention, and permeable retaining dams are increasingly used in debris flow prevention and control projects. [0003] The traditional permeable retaining dams mainly include comb dam, Gufang dam, Zhuanglin dam and grid dam, etc. The main problems are as follows: (1) The traditional retaining dam resists by enhancing the strength, stiffness and ducti...

AI Technical Summary

Problems solved by technology

[0003] The traditional permeable retaining dams mainly include comb dam, Gufang dam, Zhuanglin dam and grid dam, etc. The main problems are as follows: (1) The traditional retaining dam resists by enhancing the strength, stiffness and ductility of the structure itself. The impact force of debris flow, that is, the impact energy stored and consumed by the structure itself, belongs to the state of passive stress, with poor impact resistance, easy to be damaged and difficult to repair during use; (2) In order to improve the overall stability of the dam, most structural components The section size is large and the foundation is buried deeply, resulting in economic waste

(3) The dam body is mainly reinforced concrete and masonry structure, which is large in size and uses a lot of materials, and the construction site in mountainous areas is severely restricted, making construction difficult

Images