A Construction Method for Concrete Lining of Steel Formwork Pallet in Bend Pipe Section of Tailgate Tunnel

Abstract

The invention relates to a tailrace tunnel bent pipe section steel mould trolley concrete lining construction method which comprises the steps that in a tailrace tunnel lining process, arc line arrangement is carried out for the travelling track of a steel bar installation trolley and a steel mould lining trolley, measurement and staking-out are carried out, and then track installation and bendingfixation are carried out; two driving wheels running in front of a linear steel bar trolley are transformed into steering wheels from directional wheels; bottom arch lining of the steel mould liningtrolley adopts a mode of additionally arranging a wedge-shaped steel panel on an original long hydraulic needle beam type steel mould trolley for lining; and for side top arch lining, a long hydraulicself-propelled track type steel mould trolley for original linear section lining is disassembled into two parts, namely two long hydraulic self-propelled track type steel mould trolleys, and then wedge-shaped steel panels are additionally arranged on the two trolleys for lining. The invention aims to provide the tailrace tunnel bent pipe section steel mould trolley concrete lining construction method in which a shaping steel mould trolley, a trolley track and a steel bar trolley are consistent with the design of a bent pipe section with a small curvature radius in a lining process.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to a construction method for concrete lining of a steel mold trolley in a bend pipe section of a tailrace tunnel. Background technique [0002] The existing concrete construction formwork for the elbow section of the tailrace tunnel of the hydropower station mostly adopts shaped formwork or bulk formwork for lining construction, that is, P3015 and P1015 shaped combination small steel forms are used for assembly, or 1.2cm thick 2.44m×1.22m Bamboo glue formwork is used for assembly, and the φ48×3.5mm shelf tube is used as the purlin support system of the formwork, and the full hall support is required as a load-bearing platform. It needs to invest a lot of formwork and shelf pipes, all of which are erected manually. The construction period is too long and the one-time input of turnover materials is too large, which is not economical. Th...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a concrete lining construction method for steel formwork trolleys in the bent pipe section of the tailwater tunnel, in which the steel mold trolley, the trolley track, and the steel bar trolley conform to the shape design of the curved pipe section with a smaller curvature radius during the lining process. It solves the problems that the existing concrete construction method of the tailrace tunnel bend section of the hydropower station has a long construction period, a one-time input of turnover materials is too large, there is a safety risk, and the appearance quality of the concrete is difficult to control

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