CN214695167U - Totally enclosed parallel steel strand wires cable system - Google Patents
Totally enclosed parallel steel strand wires cable system Download PDFInfo
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- CN214695167U CN214695167U CN202023137908.7U CN202023137908U CN214695167U CN 214695167 U CN214695167 U CN 214695167U CN 202023137908 U CN202023137908 U CN 202023137908U CN 214695167 U CN214695167 U CN 214695167U
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Abstract
A full-sealed parallel steel strand inhaul cable system comprises inhaul cable bodies, a beam end anchoring section, a beam end transition section, a tower end transition section and a tower end anchoring section 5, wherein the beam end transition section further comprises a sealing structure I between a waterproof cover and an embedded pipe and a sealing structure II between the waterproof cover and a HDPE outer sheath pipe joint; the sealing structure I comprises a flange I, a flange II and a sealing gasket I arranged between the flange I and the flange II; the sealing structure II is a threaded connection structure between the waterproof cover and the HDPE outer sheath pipe joint; the HDPE outer sheath pipe telescopic compensation device of the tower end transition section part is of a segmented connection structure and comprises a transition connection pipe, a telescopic compensation pipe and a connection cylinder, the upper end of the transition connection pipe is directly connected with an anchor at the tower end of the inhaul cable and extends out of the tower, the lower end of the telescopic compensation pipe is sleeved with the HDPE pipe of the inhaul cable, the system is of a full-sealing structure, external environment and gas exchange inside the inhaul cable can be blocked, and the corrosion resistance of the inhaul cable is effectively improved.
Description
Technical Field
The utility model relates to a parallel steel strand wires cable system, especially a totally enclosed parallel steel strand wires cable system.
Background
Current parallel steel strand wires cable system beam-ends buckler cup joints with the pre-buried pipe, plays the effect of supporting the outer protective casing of cable HDPE, does not have effectual sealing measure between buckler and the pre-buried pipe, and inside moisture or harmful gas can get into the cable through the clearance between buckler and the pre-buried pipe to anticorrosive production harmful effects to the cable lower extreme.
The stay cable tower end PE pipe telescopic compensation device is usually hung on the inner wall of a tower end embedded pipe, the telescopic compensation pipe and the stay cable HDPE outer sheath pipe are sleeved with each other in a certain length, a large gap is formed between the telescopic compensation pipe and the stay cable HDPE outer sheath pipe, and moisture can easily enter the stay cable; especially, most cable-stay bridges adopt slip form construction, the embedded pipe does not stretch out of the tower wall, great difficulty is brought to the installation of a tower end vibration damping device and a tower end PE pipe telescopic compensation device, when the construction is not standard, the depth of the connecting flange of the tower end PE pipe telescopic compensation device entering the embedded pipe is insufficient, rainwater flows downwards along the tower wall in rainy days, and due to the action of wind power, the rainwater can upwards flow backwards for a certain distance along the inner wall of the embedded pipe, possibly enters the interior of the stay rope, and the adverse effect can be caused to the corrosion prevention of the stay rope.
In addition, welding operation during installation of the vibration damper and the tower end PE pipe telescopic compensation device has burn risks to a PE sheath of the stay cable steel strand and an HDPE outer sheath pipe with the stay cable installed on the lower portion.
Disclosure of Invention
The utility model discloses aim at: the utility model provides a totally enclosed parallel steel strand wires cable system, this cable system is full seal structure, can block external environment and the inside gas exchange of cable, keeps the stability of cable internal environment, effectively improves the corrosion protection performance of cable to improve the life of cable, in order to solve the above-mentioned weak point that prior art exists.
The technical scheme for solving the problems is as follows: a full-sealed parallel steel strand inhaul cable system comprises an inhaul cable body part consisting of a PE sheath steel strand and an HDPE outer sheath pipe; a beam end anchoring section part consisting of a beam end protective cover, a beam end anchorage device and a working clamping piece; the beam end transition section part consists of a vibration damper, a sealing gasket, a beam end cable hoop and a waterproof cover; a tower end transition section part consisting of a tower end cable hoop and a tower end HDPE outer sheath pipe expansion compensation device; the beam end anchorage and the tower end anchorage of the inhaul cable system are respectively supported by a beam end anchor backing plate and a tower end anchor backing plate and transmit cable force to the beam and tower structures; the method is characterized in that:
the beam end transition section part also comprises a sealing structure I between a waterproof cover and the embedded pipe and a sealing structure II between the waterproof cover and the HDPE outer sheath pipe joint;
seal structure I includes: the flange I is arranged at a position, away from the end part, of the beam-end embedded pipe by a certain distance in a welding mode, the flange II is arranged on the inner wall of the lower cylinder of the waterproof cover by a welding mode, and the sealing gasket is arranged between the flange I and the flange II;
the sealing structure II is as follows: the waterproof cover and the HDPE outer sheath pipe joint are in a threaded connection structure, and comprise external threads machined on the outer circle of an upper cylinder of the waterproof cover, internal threads machined on the outer sheath pipe joint of the PE pipe at the lower end of the HDPE outer sheath pipe, and a sealing structure II formed by connecting the upper cylinder of the waterproof cover and the outer sheath pipe joint of the HDPE pipe through threads.
The further technical scheme is as follows: the HDPE outer sheath pipe telescopic compensation device of the tower end transition section part is of a segmented connection structure and comprises a transition connection pipe, a telescopic compensation pipe and a connection cylinder, the upper end of the transition connection pipe is directly connected with an anchor at the tower end of an inhaul cable and extends out of the tower, the lower end of the telescopic compensation pipe is sleeved with the HDPE pipe of the inhaul cable, the lower end of the transition connection pipe is provided with an inner boss, the inner boss is machined with an inner thread, the end of the telescopic compensation pipe is machined with an outer thread, after the inhaul cable is installed, the telescopic compensation pipe is in threaded connection with the transition connection pipe, and the telescopic compensation pipe is fastened through self-tapping screws with anti-loosening effects.
The further technical scheme is as follows: the transition connecting pipe of the tower end HDPE outer sheath pipe telescopic compensation device is connected with the inhaul cable tower end anchorage device in any one of the following 3 ways:
firstly, the upper end of the transition connecting pipe is provided with an expanded part which is sleeved into the connecting cylinder and then connected with the transition connecting sleeve of the tower end anchorage device through the connecting cylinder;
secondly, an expanded part is arranged at the upper end of the transition connecting pipe and sleeved in the connecting cylinder, and when the diameter of the extension cylinder of the tower end anchorage device is large enough, the connecting cylinder is directly connected with the extension cylinder of the tower end anchorage device;
and thirdly, processing external threads at the end part of the transition connecting pipe, and directly connecting the external threads with the extension cylinder with the internal threads of the tower end anchorage device.
The further technical scheme is as follows: the upper end part of the HDPE outer sheath pipe is provided with a guide head which has a function of neutralizing and guiding, and the outer diameter of the guide head is slightly smaller than the inner diameter of the telescopic compensating pipe.
The further technical scheme is as follows: the fully-sealed parallel steel strand cable system comprises a beam-end anchor which is a fixed-end anchor, a tower-end anchor which is a tensioning-end anchor, or a fully-sealed parallel steel strand cable system which is composed of a beam-end anchor which is a tensioning-end anchor and a tower-end anchor which is a fixed-end anchor.
Due to the adoption of the technical scheme, the utility model relates to a totally enclosed parallel steel strand wires cable system has following beneficial effect:
the utility model relates to a totally enclosed parallel steel strand wires cable system is full seal structure, can block the inside gas exchange of external environment and cable, keeps the stability of cable internal environment, effectively improves the corrosion resisting property of cable to improve the life of cable:
1. the sealing structure I adopted between the waterproof cover and the embedded pipe realizes sealing between the waterproof cover and the embedded pipe, isolates air exchange between the outside and the inside of the inhaul cable, and better solves the problem of non-sealing between the beam end waterproof cover and the embedded pipe.
2. The sealing structure II formed by the threaded connection structure is adopted by the joint of the waterproof cover and the HDPE outer sheath pipe, so that the sealing between the waterproof cover and the HDPE outer sheath pipe is realized.
3. The tower end of the inhaul cable system has good sealing effect and eliminates potential safety hazards;
through the flexible compensation arrangement of tower end HDPE outer sheath pipe that sets up, with the flexible compensation arrangement of tower end HDPE outer sheath pipe's transition connecting pipe upper end directly be connected with cable tower end ground tackle and stretch out outside the tower wall, cancelled the pre-buried mouth of pipe damping device of tower end, need not with pre-buried pipe welded connection, inside the wall exempted from to cause outside rainwater to get into the cable because of the construction is not standard, eliminate potential safety hazard.
4. The guide head is added to the upper end of the HDPE outer protective sleeve, so that the gap between the outer protective sleeve and the telescopic compensation pipe is reduced, the gas exchange between the outside and the inside of the inhaul cable is reduced while the inhaul cable has a neutralizing guide effect, and the sealing effect on the inhaul cable is also achieved.
The technical features of a fully-enclosed parallel stranded wire cable system according to the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of the overall structure of a fully-sealed parallel steel strand inhaul cable system according to the present invention;
FIG. 2 is a schematic structural view of the lower end (beam end) of a fully-sealed parallel steel strand inhaul cable system;
FIG. 3 is a schematic structural diagram of the upper end (tower end) of the totally-enclosed parallel steel strand inhaul cable system;
FIG. 4 is a schematic view of a beam-end sealing structure of a fully-sealed parallel steel strand cable system (enlarged view of part A of FIG. 2);
FIG. 5 is a schematic view of a telescopic guide structure of an HDPE outer sheath pipe of a fully-sealed parallel steel strand inhaul cable system (enlarged view of part B of FIG. 3);
FIG. 6 is a schematic view of the connection structure of the transition connection tube and the expansion compensation tube of the PE expansion compensation device of the totally enclosed parallel steel strand cable system (enlarged view of part C in FIG. 3);
fig. 7-9 are schematic views of the connection structure of the transition connection pipe and the anchorage device of the PE pipe expansion compensation device of the totally-enclosed parallel steel strand inhaul cable system:
FIG. 7: one of connection modes of a transition connecting pipe and an anchorage device of the PE pipe telescopic compensation device (an enlarged view of a part D in figure 3);
FIG. 8: a second connecting mode of a transition connecting pipe of the PE pipe telescopic compensation device and an anchorage device;
FIG. 9: and a third connecting mode of a transition connecting pipe of the PE pipe telescopic compensation device and an anchorage device.
In the figure:
1-beam end protective cover, 2-beam end anchorage, 3-vibration damping device, 4-sealing pad and 5-beam end cable hoop;
6-a waterproof cover, 61-a waterproof cover lower cylinder, 62-a flange II, 63-a waterproof cover upper cylinder;
7-HDPE outer protective sleeve, 71-HDPE outer protective sleeve joint and 72-guide head;
the 8-PE sheath steel strand is provided with a sheath,
the expansion compensation device comprises a 9-tower-end HDPE outer sheath pipe expansion compensation device, a 91-transition connecting pipe and an expansion part at the upper end of a 911-transition connecting pipe;
92-telescopic compensating pipe, 93-connecting cylinder;
10-tower end cable hoop, 11-tower end anchorage device, 111-extension cylinder and 112-transition connecting sleeve;
12-working clamping piece, 13-tower end protective cover, 14-oily wax, 15-beam end anchor backing plate,
16-beam end embedded pipe, 161-flange I, 17-tower end embedded pipe, 18-tower end anchor backing plate,
TB-the wall of the column.
Detailed Description
A totally-enclosed parallel steel strand inhaul cable system,
as shown in fig. 1, the parallel steel strand inhaul cable system comprises an inhaul cable body part consisting of a PE sheath steel strand 8 and an HDPE outer sheath pipe 7; a beam end anchoring section part consisting of a beam end protective cover 1, a beam end anchorage device 2 and a working clamping piece 12; the beam end transition section part is composed of a damping device 3, a sealing gasket 4, a beam end cable hoop 5 and a waterproof cover 6, and the tower end transition section part is composed of a tower end cable hoop and a tower end HDPE outer sheath pipe telescopic compensation device; the beam end anchorage device 2 and the tower end anchorage device 11 of the inhaul cable system are respectively supported by a beam end anchorage backing plate 15 and a tower end anchorage backing plate 18 and transmit cable force to a beam and tower structure;
the beam end transition section part also comprises a sealing structure I between a waterproof cover and the embedded pipe and a sealing structure II between the waterproof cover and the HDPE outer sheath pipe joint;
seal structure I includes: the flange I161 which is arranged at the position of the beam-end embedded pipe 16 at a certain distance from the end part in a welding mode, the flange II 62 which is arranged on the inner wall of the waterproof cover lower cylinder 61 in a welding mode and the sealing gasket 4 (see the figures 2 and 4) which is arranged between the flange I161 and the flange II 62 play a good sealing role;
the sealing structure II is as follows: the pipe joint of the waterproof cover and the HDPE outer sheath adopts a threaded connection structure, and comprises an external thread processed on the excircle of an upper cylinder 63 of the waterproof cover, an internal thread processed on a PE pipe outer sheath joint 71 at the lower end of the HDPE outer sheath pipe 7, and a sealing structure II (see figure 4) formed by connecting the upper cylinder 63 of the waterproof cover 6 and the HDPE pipe outer sheath joint 71 through threads;
due to the combined action of the sealing structure I between the waterproof cover and the embedded pipe and the sealing structure II between the waterproof cover and the HDPE outer sheath pipe joint, the waterproof cover 6 and the beam end embedded pipe 16 are connected to effectively block the gas exchange formed between the outside and the interior of the inhaul cable, and the full-sealing effect is achieved (see figure 4).
As shown in fig. 3, the utility model relates to a tower end transition section part of totally enclosed parallel steel strand wires cable system includes tower end cable hoop 10 and a tower end HDPE outer casing telescopic compensation device 9 of being connected with cable tower end ground tackle, tower end HDPE outer casing telescopic compensation device 9 be segmentation connection structure, including transitional coupling pipe 91, flexible compensating pipe 92 and connecting cylinder 93, the transitional coupling pipe 91 upper end is direct to be connected and stretches out outside the tower with cable tower end ground tackle, flexible compensating pipe 92 lower extreme cup joints with cable HDPE pipe 7 (see fig. 5), the lower extreme of transitional coupling pipe 91 sets up the inner boss, the inner boss is processed there is an internal thread, flexible compensating pipe 92 upper end processing has the external screw thread, after the cable installation is accomplished, flexible compensating pipe 92 passes through threaded connection with transitional coupling pipe 91 to locking screw 94 fastening through playing locking effect for install self tapping steel strand wires 10 and export a certain distance from transitional coupling pipe 91 (see fig. 6) that tightens up at the pencil.
The transition connecting pipe 91 of the tower end HDPE outer sheath pipe telescopic compensation device 9 is connected with the inhaul cable tower end anchorage device by the following 3 connection modes:
the first method comprises the following steps: as shown in fig. 7, an expanded portion 911 is provided at the upper end of the transition connecting pipe 91, which is sleeved into the connecting cylinder 93 and then connected with the transition connecting sleeve 112 of the tower end anchorage 11 through the connecting cylinder 93;
and the second method comprises the following steps: as shown in fig. 8, an expanded portion 911 is provided at the upper end of the transition connection pipe 91, and is sleeved into the connection cylinder 93, and when the diameter of the extension cylinder 111 of the tower end anchorage 11 is large enough, the connection cylinder 93 is directly connected with the extension cylinder 111 of the tower end anchorage 11;
and the third is that: as shown in fig. 9, an external thread is formed at the end of the transition connection pipe 91 to be directly screwed with the internally threaded extension cylinder 111 of the tower anchor 11.
The utility model relates to a totally enclosed parallel steel strand wires cable system can be through the required length of tip mirror surface welded form extension to design at the HDPE outer protective sleeve of beam-ends, and its upper end has a direction head 72, and the external diameter of this direction head 72 is slightly littleer than telescopic compensating pipe 92's internal diameter, and its effect is that play the centering effect and play the guide effect when HDPE outer protective sleeve 7 is because of expend with heat and contract with cold (refer to figure 5). ,
the utility model discloses a totally enclosed parallel steel strand wires cable system includes that the beam-ends ground tackle is the totally enclosed parallel steel strand wires cable system that the fixed end ground tackle, tower end ground tackle are the stretch-draw end ground tackle and constitute or the beam-ends ground tackle is the stretch-draw end ground tackle, and the tower end ground tackle is the totally enclosed parallel steel strand wires cable system that the fixed end ground tackle constitutes.
The above embodiment is a totally-enclosed parallel steel strand cable system in which the tension end anchorage is arranged at the tower end and the fixed end anchorage is arranged at the beam end, which is commonly used in the actual construction.
As the utility model discloses a transform, according to engineering actual need (for example tower end space is little, when inconvenient installation stretch-draw machines), also can adopt and will stretch out the setting of drawing end ground tackle at the beam-ends, the setting of stiff end ground tackle is at the totally enclosed parallel steel strand wires cable system of tower end.
Claims (5)
1. A full-sealed parallel steel strand inhaul cable system comprises an inhaul cable body part consisting of a PE sheath steel strand (8) and an HDPE outer sheath pipe (7); the beam end anchoring section part consists of a beam end protective cover (1), a beam end anchorage device (2) and a working clamping piece (12); the beam end transition section part consists of a damping device (3), a sealing gasket (4), a beam end cable hoop (5) and a waterproof cover (6); a tower end transition section part consisting of a tower end cable hoop and a tower end HDPE outer sheath pipe expansion compensation device; and a tower end anchoring section part consisting of a tower end anchorage device (11), a working clamping piece (12) and a tower end protective cover (13), wherein oily wax (14) is poured into the anchorage devices at two ends for corrosion prevention, and a beam end anchorage device (2) and the tower end anchorage device (11) of the inhaul cable system are respectively supported by a beam end anchor backing plate (15) and a tower end anchor backing plate (18) and transmit cable force to a beam and tower structure; the method is characterized in that:
the beam end transition section part also comprises a sealing structure I between a waterproof cover and the embedded pipe and a sealing structure II between the waterproof cover and the HDPE outer sheath pipe joint;
seal structure I includes: a flange I (161) which is arranged at a position of the beam end embedded pipe (16) with a certain distance from the end part in a welding mode, a flange II (62) which is arranged on the inner wall of a lower cylinder (61) of the waterproof cover (6) in a welding mode, and a sealing gasket (4) which is arranged between the flange I (161) and the flange II (62);
the sealing structure II is as follows: adopt threaded connection structure at buckler and HDPE outer sheath coupling, include the external screw thread of processing at last drum (63) excircle of buckler (6), the internal thread of processing of PE outside of tubes sheath joint (71) of HDPE outer sheath pipe (7) lower extreme, go up drum (63) and HDPE outside of tubes sheath joint (71) of buckler (6) through the seal structure II that threaded connection constitutes.
2. The fully-enclosed parallel steel strand inhaul cable system according to claim 1, wherein: the telescopic compensation device (9) of the HDPE outer sheath pipe of the tower end transition section part is of a segmented connection structure, and comprises a transition connection pipe (91), a telescopic compensation pipe (92) and a connection cylinder (93), the upper end of the transition connection pipe (91) is directly connected with an anchor at the tower end of the inhaul cable and extends out of the tower, the lower end of the telescopic compensation pipe (92) is sleeved with the HDPE pipe of the inhaul cable, an inner boss is arranged at the lower end of the transition connection pipe (91), an internal thread is processed on the inner boss, an external thread is processed at the end part of the telescopic compensation pipe (92), after the inhaul cable is installed, the telescopic compensation pipe (92) is in threaded connection with the transition connection pipe (91), and is fastened through a self-tapping screw (94) with a locking effect.
3. The fully-enclosed parallel steel strand inhaul cable system according to claim 2, wherein: the connection mode that a transition connecting pipe (91) of the tower end HDPE outer sheath pipe telescopic compensation device (9) is connected with a guy cable tower end anchorage device adopts any one of the following 3 types:
the upper end of the transition connecting pipe (91) is provided with an expanded part (911), the expanded part is sleeved into the connecting cylinder (93), and the expanded part is connected with a transition connecting sleeve (112) of the tower end anchorage device (11) through the connecting cylinder (93);
secondly, an expanded part (911) is arranged at the upper end of the transition connecting pipe (91) and is sleeved into the connecting cylinder (93), and when the diameter of the extension cylinder (111) of the tower end anchorage device (11) is large enough, the connecting cylinder (93) is directly connected with the extension cylinder (111) of the tower end anchorage device (11);
and thirdly, external threads are processed at the end part of the transition connecting pipe (91) and are directly in threaded connection with an extension cylinder (111) with internal threads of the tower end anchorage device (11).
4. A fully sealed parallel strand inhaul cable system according to claim 2 or 3, wherein: the upper end part of the HDPE outer sheath pipe is provided with a guide head (72) which has a function of centering and guiding, and the outer diameter of the guide head (72) is slightly smaller than the inner diameter of the telescopic compensation pipe (92).
5. A fully sealed parallel strand inhaul cable system according to claim 1, 2 or 3, wherein: the fully-sealed parallel steel strand cable system comprises a beam-end anchor which is a fixed-end anchor, a tower-end anchor which is a tensioning-end anchor, or a fully-sealed parallel steel strand cable system which is composed of a beam-end anchor which is a tensioning-end anchor and a tower-end anchor which is a fixed-end anchor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022977614 | 2020-12-11 | ||
| CN2020229776149 | 2020-12-11 |
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| CN214695167U true CN214695167U (en) | 2021-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114481836A (en) * | 2021-12-22 | 2022-05-13 | 威胜利工程有限公司 | High-strength weather-resistant steel strand stay cable complete set structure, preparation process and construction process |
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2020
- 2020-12-23 CN CN202023137908.7U patent/CN214695167U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114481836A (en) * | 2021-12-22 | 2022-05-13 | 威胜利工程有限公司 | High-strength weather-resistant steel strand stay cable complete set structure, preparation process and construction process |
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