Hoisting installation construction method for steel trusses and steel bar truss floor support plates

Abstract

The invention provides a hoisting installation construction method for steel trusses and steel bar truss floor support plates. The hoisting installation construction method comprises the steps that (1) the left side steel trusses and the right side steel trusses of the steel trusses are installed; (2) the middle steel trusses of the steel trusses are installed, and the steel bar truss floor support plates are laid on the middle steel trusses; (3) the middle steel trusses are hoisted to the expected height between the left side steel trusses and the right side steel trusses at a horizontal state; and (4) the middle steel trusses are connected with the left side steel trusses and the right side steel trusses correspondingly. Preferably, lifting devices are adopted to connect the symmetrically-arranged lifting connecting positions of the middle steel trusses to vertically lift the middle steel trusses to the expected height at a horizontal state, and before vertical lifting, the middle steel trusses are installed between the left side steel trusses and the right side steel trusses, or the well-installed middle steel trusses are placed between the left side steel trusses and the right side steel trusses. According to the hoisting installation construction method for the steel trusses and the steel bar truss floor support plates, the steel trusses and the steel bar truss floor support plates can be lifted at the same time, installation is easy and accurate, design is ingenious, operation is easy and convenient, the construction period is shortened, the construction cost is reduced, safety is achieved, and the hoisting installation construction method is suitable for application and popularization on a large scale.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to the technical field of steel truss construction, in particular to a steel truss and a steel truss floor deck hoisting, installation and construction method. Background technique [0002] With the continuous development of the economy, the scope of application of steel structures (or steel trusses) is gradually expanding due to their fast installation and large bearing capacity. [0003] However, the overall lifting and installation construction technology of large-span and large-tonnage combined steel trusses still needs to be further strengthened. The installation span is large and the tonnage of the components is heavy, which leads to complicated installation, difficulty in ensuring installation accuracy, long construction period, great difficulty, low precision and the existence of At the same time, when this kind of combined steel truss is lifted up and construc...

AI Technical Summary

Problems solved by technology

[0003] However, the overall lifting and installation construction technology of the large-span and large-tonnage combined steel truss still needs to be further strengthened. The installation span is large and the tonnage of the components is heavy, which leads to complicated installation, difficulty in ensuring installation accuracy, long construction period, great difficulty, low precision and the existence of At the same time, when this kind of combined steel truss is lifted up and constructed, it is generally laid after the lifting is completed, such as figure 1 As shown, the reinforced truss floor deck 1 usually includes a bottom formwork steel plate 11, a web steel bar 12, an upper chord steel bar 13 and a lower chord steel bar 14. On both sides of the lower part of the web steel bar 12, the upper chord steel bar 13 is arranged on the top of the web bar steel bar 12, and the concrete is poured after the steel bar truss floor deck 1 is laid. After the combined steel truss is lifted, it will be more difficult to lift the steel truss floor deck 1 to the floor again. Many dead corners cannot be lifted in place at one time, and secondary handling is required, which consumes manpower and material resources

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