Prefabricated reinforced concrete gate slot unit for rcc dam and construction method of gate slot

Abstract

The invention discloses a prefabricated reinforced concrete gate slot unit for a rcc dam and a construction method of a gate slot. The construction method comprises the following steps of prefabricating the prefabricated reinforced concrete gate slot unit with a slot and a plug in a factory for prefabrication and pre-burying a joint bar; chiseling a contact surface of the prefabricated reinforcedconcrete gate slot unit and the ground concrete; chiseling a contact surface of the prefabricated reinforced concrete gate slot unit and the second phase concrete; chiseling a contact surface of newand old concrete; hoisting the prefabricated reinforced concrete gate slot unit on-site; carrying out layer-by-layer construction to grind concrete; hoisting the upper-layer prefabricated reinforced concrete gate slot unit, and carrying out layer-by-layer construction to grind concrete to a design elevation; and pouring the second phase concrete in a later period and mounting a metal structural part. The construction method avoids defects that it is hard to pour concrete on-site and it is slow to pour the concrete. A socket and spigot joint prefabricated part is quick to construct and construction of the socket and spigot joint prefabricated part and construction of grinding the concrete can be carried out synchronously, so that the construction period of the rcc dam is guaranteed.

Description

technical field [0001] The invention relates to a construction method for a door slot of a roller compacted concrete dam, in particular to a construction method for a prefabricated reinforced concrete door slot unit and a door slot for a roller compacted concrete dam. [0002] technical background [0003] The roller compacted concrete dam is made of ultra-dry hard concrete, which is filled and rolled layer by layer on the surface of the large warehouse, which reduces the amount of cement and formwork, and has fewer joints and blocks, continuous construction, simple temperature control, and high construction speed. Fast, low engineering cost and other advantages. In order to ensure the local stress of the weakened parts of the dam structure, the corresponding parts are set as normal concrete and equipped with stressed steel bars. The multiple construction procedures such as pouring of normal concrete, binding and welding of steel bars, support and removal of formwork not onl...

AI Technical Summary

Problems solved by technology

The multiple construction procedures such as pouring of normal concrete, binding and welding of steel bars, support and removal of formwork not only have the risk of working at heights, but also often occupy a straight-line construction period, which greatly affects the overall construction progress of the RCC dam

Images