Construction method of segment girder prestressed pipeline
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A technology of prestressed pipeline and construction method, which is applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of misplacement of orifices, pipeline blockage, easy deformation, etc., and achieves prevention of deformation, compact device structure, and convenient operation. Effect
Active Publication Date: 2016-06-01
NO 2 ENG CO LTD OF CCCC FIRST HIGHWAY ENG
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[0003] Aiming at the disadvantages of existing segmental beam prestressed pipelines such as easy displacement, easy deformation, orifice leakage, orifice misplacement, and pipeline blockage, the present invention provides a construction method for segmental beam prestressed pipelines, which solves the problem of existing section beam prestressed pipelines. Segment beam prestressed pipelines are prone to misalignment, deformation, orifice leakage, orifice misalignment, pipeline blockage, etc.
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Embodiment 1
[0027] Segmental beam prestressed pipeline construction methods, such as Figure 1-5 shown, including the following steps,
[0028] A. Install the first notch mold 11 on the template, the other end of the first notch mold 11 is fixed with the first plug 12, the outer side of the first plug 12 is sleeved with the first corrugated pipe 13, and the side wall of the first corrugated pipe 13 Fix with the first positioning steel bar 14, and fix the second plug 121 and the second notch mold 111 at the other end of the first corrugated pipe 13 in sequence, and pouring after the connection is completed to form the matching section 1;
[0029] B. The matching section 1 is removed from the template, and the first notch mold 11, the first plug 12, the second notch mold 111 and the second plug 121 at both ends of the matching section 1 are removed;
[0030] C. Sleeve the plastic pipe 3 inside one end of the matching section 1, and expose half of the plastic pipe 3; the exposed plastic pip...
Embodiment 2
[0035] Segmental beam prestressed pipeline construction methods, such as Figure 1-5 shown, including the following steps,
[0036] A. Install the first notch mold 11 on the template, the other end of the first notch mold 11 is fixed with the first plug 12, the outer side of the first plug 12 is sleeved with the first corrugated pipe 13, and the side wall of the first corrugated pipe 13 Fix with the first positioning steel bar 14, and fix the second plug 121 and the second notch mold 111 at the other end of the first corrugated pipe 13 in sequence, and pouring after the connection is completed to form the matching section 1;
[0037] B. The matching section 1 is removed from the template, and the first notch mold 11, the first plug 12, the second notch mold 111 and the second plug 121 at both ends of the matching section 1 are removed;
[0038] C. Sleeve the plastic pipe 3 inside one end of the matching section 1, and expose half of the plastic pipe 3; the exposed plastic pip...
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Abstract
The invention relates to the technical field of construction of segment girders, and discloses a construction method of a segment girder prestressed pipeline. The construction method comprises the following steps of firstly, casting a matching segment; mounting a plastic pipe (3) and a rubber ring (4) between the matching segment and a second corrugated pipeline (21) for positioning, wherein a second plug (23) and a second notch mold (24) are fixed at the other end of the second corrugated pipeline (21); then putting an air expanding shaft air sac (5) in a first corrugated pipeline (13), putting the air expanding shaft air sac (5) on the inner side of the first corrugated pipeline (13) and on the inner side of the second corrugated pipeline (21), and then performing inflation, so that the side wall of the air expanding shaft air bag (5) is in contact with the inside wall of the first corrugated pipeline (13) and the inside wall of second corrugated pipeline (21); and performing casting after completing mounting. According to the construction method disclosed by the invention, after being inflated, the air expanding shaft air bag stuffed between the inner side of the first corrugated pipeline and the inner side of the second corrugated pipeline, is used for supporting the first corrugated pipeline and the second corrugated pipeline in the corrugated pipelines, and the corrugated pipes are prevented from being deformed and misplaced pressed by external force.
Description
technical field [0001] The invention relates to the technical field of segmental beam construction, in particular to a construction method for a segmental beam prestressed pipeline. Background technique [0002] The segmental prefabricated assembly method is a construction method in which the beam body of the bridge is prefabricated in segments in the prefabricated field, and then assembled into a whole at the bridge position. Can guarantee and other advantages, the construction method has gradually been widely used at home and abroad. With the development of construction technology, long-span sea-crossing bridges and river-crossing bridges are gradually being constructed using this method. However, the prestressed piping system of long-span segmental girder bridges has small bending radius, long length, small pipe diameter, many joints, and is impacted by concrete. Or vibrating and other external forces are easy to deform, etc. In the normal construction process, affected ...
Claims
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Application Information
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