Construction method of vertical waterstop structure for expansion joints in concrete engineering

Abstract

The invention relates to a waterproof device for underground (underwater) buildings, in particular to a construction method of a vertical waterstop structure for expansion joints in concrete engineering. The vertical waterstop structure comprises a transformable plate and a steel channel and is characterized in that the transformable plate is arranged longitudinally, one half of the transformable plate is pre-buried in primary concrete while the other half of the transformable plate protrudes out of a concrete section to be arranged in an opening of the rectangular steel channel, and the steel channel is provided with fixing parts and internally filled with maltha; an open face of the steel channel and the primary concrete section are provided with asphaltic felts on two sides of the transformable plate, the exposed fixing parts are demounted after cooling of the maltha, and then secondary concrete is poured. By the construction method of the vertical waterstop structure for the expansion joints in concrete engineering, the problem of water seepage caused by differential settlement or diastrophism of stratums in hydraulic engineering can be solved, and labor cost can be saved while construction period can be shortened.

Description

technical field [0001] The invention relates to an underground (underwater) building waterproof device, in particular to a construction method for a vertical water-stop structure of expansion joints in concrete engineering. Background technique [0002] In existing concrete structures, such as retaining dams, reservoirs, subways, culverts, sluices, tunnels and other underground projects, due to the inability to pour continuously or the deformation of the foundation settlement (earthquake), or the concrete caused by temperature changes Due to thermal expansion and contraction of components, deformation joints and construction joints are often left during pouring. These gaps must take anti-leakage measures to prevent external water or groundwater from leaking into the structural space. Concrete grooves are set between the concrete and the second-stage concrete, and soft asphalt and copper sheets or rubber waterstops are installed in the grooves. However, this method requires p...

AI Technical Summary

Problems solved by technology

[0002] In existing concrete structures, such as retaining dams, reservoirs, subways, culverts, sluices, tunnels and other underground projects, due to the inability to pour continuously or the deformation of the foundation settlement (earthquake), or the concrete caused by temperature changes Due to thermal expansion and contraction of components, deformation joints and construction joints are often left during pouring. These gaps must take anti-leakage measures to prevent external water or groundwater from leaking into the structural space. Concrete grooves are set between the concrete and the second-stage concrete, and soft asphalt and copper sheets or rubber waterstops are installed in the grooves. However, this method requires prefabricated concrete grooves. The outer 3 sides are chiseled, which will prolong the construction period and increase labor. At the same time, since the length (height) of each concrete groove is generally only 50-100cm, the expansion gap must be composed of multiple concrete grooves, so multiple horizontal lines will be generated. The gaps and the irregular deformation of multiple concrete grooves will cause the leakage of soft asphalt in the subsequent pouring, and it is difficult to clean up

Images