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Tailrace tunnel bent pipe section steel mould trolley concrete lining construction method

A technology of steel formwork trolley and construction method, which is applied in the direction of infrastructure engineering, construction, etc., can solve the problems of long construction period, large one-time input of turnover materials, safety risks, difficulty in controlling the appearance quality of concrete, etc., and achieves short construction period and good quality. Economic and quality benefits, convenient construction

Active Publication Date: 2019-05-10
CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1
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Problems solved by technology

[0003] The object 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 shaped steel mold trolley, the trolley track, and the reinforced trolley conform to the shape design of the curved pipe section with a smaller curvature radius during the lining process , which solves the problems of the existing concrete construction method of the tailrace tunnel elbow section of the hydropower station with a long construction period, too much one-time input of turnover materials, safety risks and difficulty in controlling the appearance quality of the concrete

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  • Tailrace tunnel bent pipe section steel mould trolley concrete lining construction method
  • Tailrace tunnel bent pipe section steel mould trolley concrete lining construction method
  • Tailrace tunnel bent pipe section steel mould trolley concrete lining construction method

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Embodiment Construction

[0022] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments.

[0023] A construction method for concrete lining of steel mold trolley in the elbow section of tailwater tunnel, such as Figure 1-6 As shown, the construction method includes:

[0024] (1) Reconstruction measures for trolley running track: During the lining process of the tailrace tunnel, since the steel bar installation trolley and the steel mold lining trolley are both designed as straight lines, when entering the turning section, arc must be performed on the track it travels. line arrangement. Since the purchased rails are all straight heavy rails, the construction unit has no condition to purchase a bending machine for bending design, so it is necessary to bend the straight rails at the construction site. The measures are as follows: firstly carry out measurement and stakeout, and the survey team will carry out track sta...

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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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/02
Inventor 闻艳萍李铭李彩云
Owner CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD
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