Tensioning equipment for butting of PC draglines of tube joints of immersed tube tunnel and construction method
An immersed tube tunnel and construction method technology, applied in artificial islands, water conservancy projects, infrastructure projects, etc., can solve problems such as low recycling rate, chaotic construction site, and inconvenient disassembly, so as to reduce worker load, facilitate installation and Easy and labor-saving disassembly and operation
Inactive Publication Date: 2016-06-15
ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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Problems solved by technology
In traditional construction, simple reinforced steel plates are welded into the required shape for PC cable docking, which is usually welded irregularly, which is inconvenient to disassemble and has a low recycling rate, and can only simply meet the PC cable docking, while PC cable Fixing, stretching, fastening, etc. must be manually laboriously operated by the operator, the work efficiency is not high, the construction site is chaotic, and civilized construction cannot satisfy
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[0024] The present invention will be further explained in detail below with reference to the drawings and embodiments.
[0025] Such as figure 1 , 2 , 3, and 4, a tensioning device used for butt joint PC cable of immersed tube tunnel pipe section joints includes a positioning device and a tensioning device. The positioning device includes a set of first positioning devices 1 and two sets of second positioning devices. Positioning device 3, tensioning device 2 is a hydraulic jack, there are two sets of manual hydraulic pumps, the tensioning device 2 is connected with the second positioning device 3; the first positioning device 1 has a U-shaped groove in the middle, the first positioning The device 1 is provided with a tension device reserved hole for the tension device 2 to pass through. The second positioning device 3 is connected to the first positioning device 1 by a long screw, and a set of second positioning devices are installed on both sides of the U-shaped groove. 3 and t...
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The invention relates to the technical field of construction of PC draglines and particularly relates to tensioning equipment for butting of PC draglines of tube joints of an immersed tube tunnel and a construction method. The tensioning equipment comprises a tensioning device, a first positioning device and a second positioning device, wherein the first positioning device is connected with the second positioning device; the second positioning device is connected with the tensioning device; the first positioning device is provided with a tensioning device reserved hole for the tensioning device to pass through; the first positioning device is positioned in a U shape; and the second positioning device is positioned by long screws. The tensioning equipment is symmetrically mounted between joint dragline steel sheaths of PC dragline joints at two sides and end parts of dragline embedded parts, so that PC dragline steel strands are straightened. The tensioning equipment provided by the invention can improve the butting efficiency of the PC draglines as well as greatly improve the field utilization ratio and can realize complete recycling. The method provided by the invention realizes butting of the PC draglines in limited operating space by a simple and optimized structure.
Description
Technical field [0001] The invention relates to the technical field of PC cable construction, in particular to a tensioning device and a construction method for the butt connection of a PC cable of an immersed tunnel pipe section joint. Background technique [0002] At present, immersed tube tunnel construction technology is more and more widely used in domestic construction. In large-scale immersed tube tunnel engineering, a large number of pipe joint PC (prestressed concrete) cable butt constructions are involved, and the difference in docking technology will directly affect The quality of butt joints and the construction effect of tension and fastening of pipe joints. The traditional construction uses simple steel steel plates welded into the required shape to carry out the PC cable butt, which is usually made of irregular welding, which is inconvenient to disassemble, and the recycling rate is not high. It can only simply meet the PC cable butt, while the PC cable Fixing, st...
Claims
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IPC IPC(8): E02D29/073
CPCE02D29/073
Inventor 李国江彭再勇崔玉国王秋林李志军刘敏陈旺姚怡文韩秀娟邓彪章勇李社伟邵阳
Owner ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP