Large-sized aqueduct prestressing force construction method
A construction method and prestressing technology, applied in water conservancy projects, artificial waterways, buildings, etc., can solve the problems of difficult construction, self-heavy single-span troughs, and the inability of a single trough to meet the requirements of a large amount of water delivery, so as to shorten the construction period. , the effect of reducing production costs
Inactive Publication Date: 2008-11-19
CHINA GEZHOUBA GRP FIRST ENG CO LTD +3
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The invention relates to a prestress construction method for a large-scale aqueduct, belonging to the aqueduct construction technical field. The method mainly completes the prestress construction of the aqueduct by the following steps of colligation of a steel disc, assembly of a corrugated pipe, assembly of a stretching end anchor pallet, assembly of a fixed end p-type anchor device, clustering of steel strands, primary concrete placement and secondary concrete placement, and techniques such as stretching, channel grouting and so on. The method adopts the construction techniques such as three-dimensional arrangement of prestressing tendons, pretightening of a single tendon, staged stretching, anchor seal through a protective cover, vacuum auxiliary grouting and so on, shortens the construction period and reduces the production cost.
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