Cooling tower ring beam attached type support truss and construction method thereof

Abstract

A cooling tower ring beam attached type support truss comprises a plurality of groups of herringbone columns, wherein a truss is fixed on each group of herringbone columns; each truss is composed of four cross beams and a plurality of straight draw bars and diagonal draw bars; and a plurality of tripods are arranged on both sides of each truss, and each two trusses are connected. The constructionmethod provided by the invention comprises the following steps: four cross beams and the straight draw bars and the diagonal draw bars, used for forming each truss are cut out to separately constructan inner truss piece and an outer truss piece; (2) a plurality of tripods are fixedly connected with the inner and outer truss pieces respectively; (3) strutting pieces are fixed on the herringbone columns respectively, the herringbone columns are hoisted; (4) each truss is assembled; (5) one truss is arranged on each group of herringbone columns, each two trusses are connected through a connection plate; and (6) the tripods are connected mutually, and railings and running boards are arranged on the tripods. The support truss provided by the invention has the advantages of good structural rigidity, high carrying capacity and maneuverability, safety and reliability; and the construction method is convenient to use, and has low construction cost and short construction period.

Description

technical field [0001] The present invention particularly relates to a kind of suitable for 3500m 2 -9000m 2 A cooling tower ring beam attached support truss and its construction method for a hyperbolic natural ventilation reinforced concrete structure cooling tower. Background technique [0002] The cast-in-place ring beam support system of hyperbolic natural ventilation reinforced concrete cooling towers in thermal power (thermal) power plants generally adopts bent and non-bent structure construction methods. [0003] The construction method of the bent structure requires the use of scaffolding pipes, vertical derrick pipe fittings or other steel structures, which form a ring-like network space structure. The circumferential and radial row spacing generally ranges from 900-1500mm. The outer spacing is large and the inner spacing is small. The step distance is generally 1200-1500mm, and the uppermost end is generally 900-1000mm, which is arranged around a circle for the "...

AI Technical Summary

Problems solved by technology

[0004] When the construction method without bent frame structure is adopted, the operating platform is theoretically feasible, but in actual engineering, the operating platform deforms greatly and the safety is poor; the deformation of the beam bottom structure is difficult to control, and reliable technical measures are required

At the same time, the amount of structural processing is large, there are many parts, the assembly is difficult, and the requirements for assembly quality are relatively high.

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