Hydraulic turbine set concrete integral pouring method and structure

Abstract

The invention discloses a hydraulic turbine set concrete integral pouring method and structure, relates to the technical field of hydropower engineering construction, and aims to improve the pouring construction efficiency and construction quality of a hydraulic turbine set structure. According to the main technical scheme, the integral concrete pouring method for the hydraulic turbine set comprises the following steps that firstly, a pull anchor and a steel buttress are prefabricated, and the pull anchor and the steel buttress are pre-buried in foundation slab concrete in advance in the process of pouring the foundation slab concrete; secondly, a tail water diffusion pipe, an elbow pipe and a taper pipe are installed, and after the steel buttress is installed and reinforced, a pull anchor is tensioned; step 3, checking the mounting elevations of the tail water diffusion pipe, the elbow pipe and the taper pipe by using a level gauge, and checking the perpendicularity and levelness of the tail water diffusion pipe, the elbow pipe and the taper pipe by using a frame type gradienter; step 4, using a level gauge to introduce an elevation control point near a pouring part, respectively placing a pair of box staff on the tail water diffusion pipe, the elbow pipe and the taper pipe, and measuring the elevation value of each part before pouring.

Description

technical field [0001] The invention relates to the technical field of hydropower engineering construction, in particular to a concrete integral pouring method and structure for a hydraulic turbine unit. Background technique [0002] For the general concrete construction of power plant units, for the installation of mechanical and electrical equipment, it is often necessary to reserve the second-phase concrete during the main construction process, and then install the mechanical and electrical equipment, and then carry out the second-phase concrete pouring. This type of construction method directly prolongs the overall construction period of the power plant. During concrete construction, the use of formwork materials is large, and the requirements for the first-stage concrete formwork and the second-stage concrete formwork and size are high. Reserving basic space for equipment (such as tailwater diffuser, cone pipe section, elbow pipe section) is labor-intensive and time-con...

AI Technical Summary

Problems solved by technology

Reserving basic space for equipment (such as tailwater diffuser pipe, cone section, and elbow section) is labor-intensive and time-consuming, and the installation of electromechanical equipment can only be carried out after the strength of the foundation concrete reaches 70% of the design value, which directly affects the installation period of electromechanical equipment

Before the second phase of concrete pouring, the concrete surface of the first and second phase joints needs to be chiseled. Only the chiseling treatment of the joint surface at this part will cause construction cold joints between the first and second phase concrete joints. May cause water leakage

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