Construction method and pouring structure in prestressed tendon position of prestressed coal bin cylinder wall

Abstract

The invention discloses a construction method and a pouring structure in the prestressed tendon position of a prestressed coal bin cylinder wall, which are convenient to construct, and can shorten the construction period. The construction method and the pouring structure mainly adopt the steps as follows: slip form templates corresponding to prestressed tendons are dismantled when slip form dies and a supporting platform move to the position under the prestressed tendons, and wooden templates are arranged in the positions corresponding to the prestressed tendons; the wooden templates are connected with cylinder wall reinforcement bars; through holes are formed in the wooden templates; the prestressed tendons penetrate out from the through holes, and notches used for avoiding the prestressed tendons are formed on the supporting platform; the slip form dies are slide to a layer, in which the prestressed tendons are arranged; the wooden templates and the slip form dies can form a prestressed tendon layer pouring die together; and concretes are poured into the prestressed tendon layer pouring die. Further, two sets of the wooden templates can be recycled, that is, the slip form construction technology and reverse mould construction technology are used in combination, so that the use amount of the wooden templates can be reduced, and the construction period can also be shortened.

Description

technical field [0001] The invention relates to a construction method for the position of the prestressed tendon on the wall of the prestressed coal bunker and a pouring structure for the position of the prestressed tendon on the wall of the prestressed coal bunker. Background technique [0002] Large-scale coal preparation plants in my country's coal industry generally have to build various large coal bunkers such as raw coal bins, gangue bins, and mixed coal bunkers. Such large coal bins are concrete structures with a height greater than 40 meters and a diameter generally greater than 20 meters. . Large coal bunkers are generally reinforced concrete silos. For some special areas, due to the influence of the proportion of coal composition and the loading capacity, the wall of the coal bunker is required to have higher strength, and at this time it is necessary to configure prestressed tendons. In the prior art, in the process of constructing the prestressed coal bunker wal...

AI Technical Summary

Problems solved by technology

However, in the construction of prestressed coal bunkers, the use of sliding form construction technology has the following disadvantages: the prestressed tendons in the prestressed cylinder wall need to be pre-buried in advance and exposed to a certain length for later tensioning

However, the strength of the prestressed tendons is extremely high, and it is difficult to bend. It takes a long time to bend the prestressed tendons, which in turn affects the normal sliding of the sliding form, and it is easy to have defects on the prestressed tendons after repeated bending. Affect normal use

The above reasons will lead to the extension of the construction period, and even cause quality accidents

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