Inverted triangular obliquely-pulling obliquely-climbing hanging basket

Abstract

The invention discloses an inverted triangular obliquely-pulling obliquely-climbing hanging basket which comprises a main truss system, a retaining system, a supporting reaction system and a traveling system. The inverted triangular obliquely-pulling obliquely-climbing hanging basket is characterized in that the main truss system, the supporting reaction system and the traveling system are mounted above the main truss system, the main truss system is composed of longitudinal beams (1) symmetrically arranged on two sides of a middle crossbeam (10), a front pull rod (3) and a rear pull rod (11), the front pull rod (3) and the rear pull rod (11) are connected with the longitudinal beams (1), and the longitudinal beams (1) on the two sides are connected by a front crossbeam (9), the middle crossbeam (10) and a front stable truss (8) to form a spatial structure; the retaining system comprises a shearing arm (14) and a supporting and retaining device (15), and a shearing arm jack (16) is arranged between the supporting and retaining device (15) and the shearing arm (14). The inverted triangular obliquely-pulling obliquely-climbing hanging basket is simple in structure, convenient to demount and mount, light, convenient, safe, stable and suitable for popularization and use in complex-terrain wide-box-arch big-slope variable-arc arch bridge construction.

Description

technical field [0001] The invention belongs to the technical field of bridge construction devices, and in particular relates to an upside-down triangular cable-stayed inclined climbing hanging basket. Background technique [0002] In mountainous areas or highlands, long-span reinforced concrete box-arch bridges are one of the most suitable, reasonable and economical bridge types. Especially in western mountainous areas, where there are many rocky foundations and high bearing capacity, it is economical and reasonable to build long-span reinforced concrete box-arch bridges. of. However, for the complex terrain and geological conditions and harsh transportation environment in mountainous areas, higher requirements are put forward for the construction of long-span reinforced concrete box arch bridges: a. The transportation of construction materials and equipment is as convenient as possible; b. No prefabrication is required site; c. simple construction process; d. strong struc...

AI Technical Summary

Problems solved by technology

The above-mentioned hanging baskets have the following defects in the construction of box-shaped arch bridges: (1) The hanging baskets processed by standing steel components such as Bailey pieces or universal rods have poor structural flexibility because these steel components are shaped products. The connection between the rods is difficult to deal with and the weight of the hanging basket is heavy

(2) The hanging basket is installed on the top of the poured beam section, and its load-bearing truss is placed on the top of the box. Since the arch bridge section is inclined and curved, the forearm of the hanging basket must be lengthened, and the angle of each section of the rear anchor is at Changes make the structure of the hanging basket more complicated

(3) The support and bearing system are integrated, although it can meet the maximum force requirements when the hanging basket is walking or concrete pouring, but it cannot meet the needs of different forces under the two working conditions at the same time

(4) The main truss adopts the side truss type, which can meet the cantilevered construction of general box arches, but cannot adapt to the construction of wide box arches

(5) The fulcrum of the side truss hanging basket is outside the truss, resulting in a large force outside the plane, and it is difficult to meet the force, deformation and stability requirements at the same time

(6) The design of the side truss type hanging basket walking system is not reasonable, such as the π-shaped track set upside down, resulting in uneven walking of the hanging basket; and the process of adjusting the elevation of this type of hanging basket is cumbersome

(7) The speed of lateral formwork erection and formwork removal is slow, which affects the construction progress

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