Integral construction method for air bag of tunnel sewer ditch

Abstract

The invention relates to an integral construction method for an air bag of a tunnel sewer ditch, which comprises the following steps: cleaning up a related working plane at the position of the sewer ditch, and carrying out measurement and locating; placing a reinforcement cage, wherein the reinforcement cage comprises stirrups and longitudinal bars, and the arc stirrups which are of an integrated structure are adopted at the positions close to the inside of the sewer ditch; placing the air bag in a sleeve, drawing the sleeve and the air bag onto the arc stirrups in the reinforcement cage, and after mounting the sleeve and the air bag in place, inflating the air bag; when inflating the air bag to a set degree, pulling out the sleeve, and when continuing to inflate the air bag to a preset pressure, carrying out positioning and fixing on the air bag and the reinforcement cage by utilizing a fixing part; setting up a peripheral template of the reinforcement cage, and after closing a die, pouring concrete; after initial setting of the concrete, withdrawing the exhausted air bag out of the sewer ditch, and curing the concrete.

Description

technical field [0001] The invention relates to a tunnel drainage ditch construction technique, in particular to an integral construction method of a tunnel sewage ditch airbag. Background technique [0002] Every year in my country, the phenomenon of highway water damage caused by imperfect highway drainage facilities or insufficient service life is very serious. As the main component of highway drainage facilities, the construction quality of sewage ditch directly affects the drainage effect of the entire highway. The pavement sewage ditch is an important part of road tunnel pavement drainage, which can collect the water flow of the tunnel pavement and discharge the tunnel, which can effectively ensure the tunnel driving safety and the durability of the tunnel pavement. The construction of sewage ditch has traditionally been centrally prefabricated in a prefabricated field and assembled on site. The cost of labor and machinery for prefabrication, transportation, and instal...

AI Technical Summary

Problems solved by technology

The construction of sewage ditches has traditionally been prefabricated in a prefabricated field and assembled on site. The labor and machinery costs for prefabrication, transportation, and installation are high, and they are easily damaged during transportation and installation. The process is complicated, and the length of prefabrication is short. Slow, the integrity of the side ditch is poor, a special prefabricated site is required, and the consumption of formwork materials is large, especially in super long tunnels, the traditional construction technology is extremely uneconomical

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