Flow construction method of underground pipe gallery inner mold system

Abstract

The invention relates to a flow construction method of an underground pipe gallery inner mold system. A pair of mold frame automatic control units is arranged on the same section of a pipe gallery. During construction, after top mold plates, side mold plates and corner mold plates stretch to design positions, an independent early demounting mold plate is mounted at the clearance position of the two top mold plates; complete supporting is formed by the top mold plates, the side mold plates, the corner mold plates and the early demounting mold plate, and pouring is carried out; after concrete reaches certain strength, the top mold plates, the side mold plates and the corner mold plates retract and move to the next work station along with trolleys; and meanwhile, the early demounting mold plate is kept in a supporting state, the early demounting mold plate is demounted after the concrete reaches certain strength, and the demounted early demounting mold plate and the mold frame automatic control units reaching the next work station cooperate to complete subsequent supporting. According to the method, the mold demounting wait time is shortened, the movement and preparation time of the mold frame automatic control units is saved, and repeated utilization is convenient.

Description

technical field [0001] The invention belongs to the technical field of construction of an underground pipe gallery, and in particular relates to a flow-through construction method of an internal mold system of an underground pipe gallery. Background technique [0002] The construction of urban underground comprehensive pipe gallery is an important measure to innovate urban infrastructure construction. The underground pipe gallery has the characteristics of relatively regular size, large cross-sectional span, and long pipe gallery length. Therefore, the underground pipe gallery internal mold system can be used for pouring support. Generally, the internal formwork system of underground pipe gallery adopts the combination of traditional formwork and scaffolding, which requires a large amount of work and material consumption for erection, dismantling, and transportation. Therefore, it takes a long time, has low efficiency and high cost. The current advanced internal formwork syst...

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Problems solved by technology

Generally, the internal formwork system of underground pipe gallery adopts the combination of traditional formwork and scaffolding, which requires a large amount of work and material consumption for erection, dismantling, and transportation. Therefore, it takes a long time, has low efficiency and high cost. The current advanced internal formwork system for underground pipe gallery The mold base automatic control unit is adopted. The mold base automatic control unit includes a trolley and an electrical control system. A retractable top formwork and side formwork are installed on the trolley. The formwork, side formwork and tucked corner formwork are extended to the design position for support. After the pouring is completed, the top formwork, side formwork and tucked corner formwork are retracted, and the trolley moves to the next section, so that the overall movement can be carried out in sections without erection and construction. However, there are still some problems: 1) When the section span of the pipe gallery is too large, if a single trolley is used for support, the trolley is huge in size and difficult to manufacture and transport, and it is difficult to continue to use it after the project is completed; 2) After the top formwork, side formwork and corner formwork on the trolley are extended to the design position for support, it is necessary to wait until the concrete has fully reached its strength before the conditions for formwork removal are available. Only after the formwork is removed can the next stage of construction be carried out. Formwork removal The longer the waiting time, the longer the construction period. For the pipe gallery with a large cross-sectional span, the waiting time for form removal is longer

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