CN107558352B - Arch bridge steel strand suspender capable of replacing single cable and installation and construction method thereof - Google Patents
Arch bridge steel strand suspender capable of replacing single cable and installation and construction method thereof Download PDFInfo
- Publication number
- CN107558352B CN107558352B CN201710818675.0A CN201710818675A CN107558352B CN 107558352 B CN107558352 B CN 107558352B CN 201710818675 A CN201710818675 A CN 201710818675A CN 107558352 B CN107558352 B CN 107558352B
- Authority
- CN
- China
- Prior art keywords
- anchor
- safety
- clamping piece
- steel strand
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The arch bridge steel strand hanger rod with the single replaceable rope comprises a hanger rod and a hanger rod anchor, wherein the hanger rod is a combination body formed by m steel strands with single steel strands anchored on the hanger rod anchor, the anchor end of the tensioning end is also connected with a safety anchor, the safety anchor is arranged at the tail end of an anchor plate clamping piece, and a disc spring is arranged between the anchor plate and the safety anchor plate of the safety anchor; the safety anchor is formed by combining a safety anchor plate II and a clamping piece III, or is an active anti-loosening device formed by a safety anchor plate I with a threaded hole, an anchor removing ring and a single-hole anchor provided with the clamping piece II, wherein the anchor removing ring is a split anchor removing ring, an integral anchor removing ring or an integral anchor removing ring with a spigot. The arch bridge steel strand suspender capable of replacing the cable singly takes the steel strand inhaul cable as the suspender and is provided with the safety anchor, and the clamping piece can still be tightly propped under a larger impact load, so that the clamping piece can tightly bite the steel strand, and the anchoring failure caused by loosening, sliding wire and the like is avoided; the hanger rod can be replaced in the state of not sealing the bridge, and the influence on bridge traffic is small.
Description
Technical Field
The invention relates to a bridge member and a loading and unloading construction method thereof, in particular to an arch bridge steel strand suspender capable of replacing a single cable and an installation construction method thereof.
Background
The suspender of the arch bridge in the prior art adopts cold injection anchor steel wire inhaul cable and whole bundle of extrusion steel strand inhaul cable, the outer sheath pipe of the steel wire inhaul cable is easy to stress extrusion crack, and the outer sheath pipe is easy to bruise crack in the transportation and construction processes, so that the steel wire is directly exposed in the air, and the steel wire inhaul cable is corroded; the steel strand extrudes the finished rope of the suspender and the anchored rope body of the steel wire finished rope to form a whole, so that single rope replacement can not be performed, and only the whole rope replacement can be performed, so that bridge traffic is required to be controlled, even a bridge is sealed, and the passing function of the bridge is influenced.
Disclosure of Invention
The invention aims to provide a single cable-replaceable arch bridge steel strand suspender which is applied to a railway arch bridge, wherein the single cable-replaceable arch bridge steel strand suspender takes a steel strand inhaul cable as a suspender and is provided with a safety anchor, and can still follow up a clamping piece under a larger impact load to tightly clamp the steel strand, so that the clamping piece does not loosen, slide wires and the like to cause anchoring failure; and the arch bridge suspender realizes single cable replacement; the invention also provides a method for installing and constructing the arch bridge steel strand suspender capable of replacing the cable singly.
The technical scheme for solving the problems is as follows: the arch bridge steel strand suspender comprises a suspender and a suspender anchor, wherein the suspender anchor comprises a fixed end anchor and a tensioning end anchor; the method is characterized in that: the hanger rod is a combination body formed by m steel strands which are anchored on the hanger rod anchor, the tension end anchor is also connected with a safety anchor, the tension end anchor comprises an anchor plate and a clamping piece I, m anchor holes for penetrating through the steel strands are formed in the anchor plate, the m steel strands are anchored on the anchor plate through the clamping piece I, the safety anchor is arranged at the tail end of the clamping piece of the anchor plate, a disc spring is arranged between the anchor plate and the safety anchor plate of the safety anchor, and the value range of m is as follows: m is an integer of 3 or more and 1000 or less.
The further technical scheme of the arch bridge steel strand suspender capable of replacing the cable by a single wire is as follows: the safety anchor is an active anti-loosening device and comprises a safety anchor plate I with a threaded hole, an anchor removing ring and a single Kong Mao provided with a clamping piece II, wherein a distance H is reserved between the anchor removing ring and the safety anchor plate I during installation; the value range of H is as follows: h is more than or equal to 8mm and less than or equal to 20mm.
The further technical scheme is as follows: the split type anchor removing ring comprises a screw rod and a nut sleeved at one end of the screw rod, and in the installation state, the screw rod with external threads is in threaded connection with the safety anchor plate I through a screw hole in the safety anchor plate I, and one end of the nut props against the bottom of the single-hole anchor.
Further technical scheme is as follows: the integral anchor removing ring is an unequal-diameter screw rod with an inner hole, the small end of the screw rod is in threaded connection with the safety anchor plate I through a screw hole in the safety anchor plate I in an installation state, and the large end of the screw rod is propped against the bottom of the single-hole anchor.
Further technical scheme is as follows: the integral anchor removing ring with the spigot is a screw rod with an unequal diameter and an inner hole, the large end of the screw rod is provided with the spigot, the small end of the screw rod is in threaded connection with the safety anchor plate I through a screw hole in the safety anchor plate I in an installation state, and the single-hole anchor is inserted into the spigot of the large end of the integral anchor removing ring with the spigot.
The further technical scheme of the arch bridge steel strand suspender capable of replacing the cable by one is as follows: the safety anchor is formed by combining a safety anchor plate II and a clamping piece III, m through holes for penetrating through the steel strands are formed in the safety anchor plate II, n anchor holes for anchoring the steel strands are formed in the outer ring of the safety anchor plate II, the clamping piece III is arranged in the anchor holes, counter bores are formed in the small ends of the anchor holes, and the range of values of m and n is as follows: m is an integer of 3 or more and 1000 or less; n is smaller than m.
Another related technical scheme is as follows: the installation construction method of the arch bridge steel strand suspender capable of replacing a single cable comprises the following steps of:
the method comprises the following steps:
A. installing a fixed end anchorage: installing according to a conventional method;
B. installing a tensioning end anchorage device: installing according to a conventional method;
C. stretching: tensioning according to a conventional method;
D. installing a safety anchor:
d1, wait that the jib stretch-draw is accomplished the back at the clamping piece tail end installation of stretch-draw end ground tackle by take the screw hole the safety anchor board I, fade the anchor ring and install the initiative locking device that clamping piece II constitutes, during the installation, select to get the single Kong Mao on the steel strand wires of a certain amount in the steel strand wires of installing at safety anchor board I outer lane, fade the anchor ring and install between safety anchor board I and single hole anchor, fade anchor ring and safety anchor board I and leave distance H, the value scope of H is: h is more than or equal to 8mm and less than or equal to 20mm;
d2, tensioning the single-hole anchor by a certain tensioning force, then anchoring, wherein the tensioning force is between 2 and 8 tons, and applying pressure to the safety anchor plate I through a plurality of single-hole anchors on the peripheral steel twisted wires of the outer ring of the safety anchor plate I so as to jack up the clamping piece of the suspender anchor;
(II) a single cable changing method:
A. loose anchor and tension of single hole anchor:
a1, when the single-hole anchor is to be put, the steel strand after the single-hole anchor is tensioned by a jack, when the tensioning force is larger than the anchoring force of the single-hole anchor, the single Kong Mao is separated from contact with the anchor-removing ring, at the moment, the anchor-removing ring is screwed into the safety anchor plate I, the jack is loosened, and the single-hole anchor clamping piece is taken out to finish the anchor loosening and the tension putting;
a2, repeating the steps to finish all the single-hole anchor loosening and expanding;
B. the safety anchor plate is taken down, and the releasing and the disassembling of the safety anchor are completed;
C. and (3) replacing the single cable, namely replacing the single cable by the steel stranded wires forming the arch bridge suspender according to a conventional method.
Another related technical scheme is as follows: the invention relates to a method for installing and constructing a single cable-replaceable arch bridge steel strand suspender, which is another method for installing and constructing a single cable-replaceable arch bridge steel strand suspender, and comprises the following steps:
the method comprises the following steps:
A. installing a fixed end anchorage: installing according to a conventional method;
B. installing a tensioning end anchorage device: installing according to a conventional method;
C. stretching: tensioning according to a conventional method;
D. installing a safety anchor:
d1, after tensioning of the suspender is completed, installing a safety anchor formed by combining a safety anchor plate II and a clamping piece II at the tail end of a clamping piece of an anchor at a tensioning end, and installing the clamping piece II in an outer ring of the safety anchor plate II and an anchor hole with a counter bore;
d2, tensioning the steel strand provided with the clamping piece II on the safety anchor plate II by a certain tensioning force, and then anchoring, wherein the safety anchor plate II is tightly propped against the suspender anchorage device, and the tensioning force of the clamping piece is between 2 tons and 8 tons;
(II) a single cable changing method:
when the anchor is removed, the clamping piece at the tensioning end is moved back into the counter bore of the safety anchor plate, so that single cable replacement is realized.
Due to the adoption of the structure, compared with the prior art, the arch bridge steel strand suspender capable of replacing the cable singly and the installation and construction method thereof have the following characteristics and beneficial effects:
1. the combined body of the plurality of single anchored steel strands, namely the steel strand inhaul cable, is used as a suspender, has excellent corrosion resistance, low transportation cost and convenient maintenance and construction, can replace the single steel strand, can replace the suspender in a state of not sealing a bridge, has little influence on bridge traffic, can reduce the manufacturing cost and maintenance cost of the bridge, and prolongs the service life of the bridge.
2. The invention relates to a safety anchor in an anchorage device of an arch bridge steel strand suspender capable of replacing a single cable, which is an active anti-loosening device and has two characteristics: one is to use the tension of the steel strand to tightly prop up the clamping piece; secondly, the larger the impact force is, the larger the pressing force acted on the clamping piece is, and the anchoring is more reliable; the clamping piece can still be kept in touch under a larger impact load, so that the clamping piece can tightly bite the steel strand, and anchoring failure caused by loosening, sliding wire and the like is avoided; the problems that the single anchored steel strand assembly is used for arch bridge suspender inhaul cable anchoring and the like are not guaranteed are solved.
3. The installation and construction method (comprising the installation and construction and the single cable replacement method) is implemented according to the conventional method, and is simple, convenient and quick.
The cable can be replaced singly, so that the manufacturing cost of the bridge can be reduced and the service life of the bridge can be prolonged.
The technical characteristics of the arch bridge steel strand suspender capable of replacing a single cable and the installation and construction method thereof are further described below with reference to the accompanying drawings and the embodiment.
FIG. 1 is a schematic diagram of the overall construction of a single cable exchangeable arch bridge steel strand hanger bar of the present invention;
FIGS. 2-1 to 2-2 are schematic views of the construction and installation of a tensioning end anchor and a safety anchor for a single cable-changeable arch bridge steel strand hanger bar in accordance with an embodiment of the present invention;
fig. 2-1: a front cross-sectional view;
fig. 2-2: FIG. 2-1 is a top view (schematic distribution of single hole anchors);
FIGS. 3-1 to 3-2 are schematic views of a security anchor plate of a security anchor according to a first embodiment of the present invention:
fig. 3-1: front cross-sectional view, fig. 3-2: FIG. 3-1 is a top view;
FIGS. 4-1 to 4-3 are schematic views of three anchor ring withdrawing structures of a safety anchor of a tensioning end anchor of a single cable-changeable arch bridge steel strand boom according to an embodiment of the present invention:
FIG. 4-1 is a split anchor ring;
FIG. 4-2 is a unitary anchor ring;
FIG. 4-3 shows an integrated anchor ring with a spigot;
FIGS. 5-1 to 5-2 are schematic views of the construction and installation of the tension end anchor and the safety anchor of the single cable changeable arch bridge steel strand hanger bar according to the second embodiment of the present invention:
fig. 5-1: a front cross-sectional view;
fig. 5-2: fig. 5-1 is a top view.
In the figure:
1 a-clamping piece I and 1 b-clamping piece II; 1 c-clip III;
2-anchor removing rings, 21-split anchor removing rings, 211-screws and 212-nuts;
22-integral anchor withdrawal ring, 23-integral anchor withdrawal ring with spigot and 231-spigot;
a 3-single hole anchor, which is a single hole anchor,
41-safety anchor plates I, 411-screw holes;
42-safety anchor plate II, 421-through holes, 422-anchor holes and 423-counter bores;
5-anchor plates, 6-nuts, 7-anchor backing plates, 8-sealing cylinders, 9-sealing devices and 10-steel strands;
11-embedded pipes, 12-vibration reduction devices, 13-tower end and HDPE connecting devices, 14-HDPE outer sleeves and 15-disc springs;
and H-the distance between the anchor ring and the safety anchor plate II.
An arch bridge steel strand suspender capable of replacing a cable singly comprises a suspender and a suspender anchor, wherein the suspender anchor comprises a fixed end anchor and a tensioning end anchor as shown in figure 1; the hanger rod is a combination body formed by m steel strands which are anchored on the hanger rod anchor, the tension end anchor is also connected with a safety anchor, the tension end anchor comprises an anchor plate 5 and a clamping piece I1 a, m anchor holes for penetrating the steel strands are formed in the anchor plate 5, m steel strands 10 are anchored on the anchor plate through the clamping piece I1 a, the safety anchor is arranged at the tail end of the clamping piece of the anchor plate 5, a disc spring 15 is arranged between the anchor plate 5 and the safety anchor plate of the safety anchor, and the value range of m is as follows: m is an integer of 3 or more and 1000 or less.
Depending on the safety anchor configuration, there are different embodiments as follows:
examples
The safety anchor is an arch bridge steel strand suspender capable of replacing a single cable of an active anti-loosening device, as shown in fig. 2-1, and comprises a safety anchor plate I41 with a screw hole 411, n anchor removing rings 2 and n single-hole anchors 3 provided with clamping pieces II 1b, wherein when the safety anchor is installed, the distance H is reserved between the anchor removing rings 2 and the safety anchor plate I41; the value range of H is as follows: h is more than or equal to 8mm and less than or equal to 20mm; the value range of n is: n is smaller than m, where appropriate, in fig. 2-2, m is equal to 37 and n is equal to 6.
The structural forms of the anchor removing ring 2 are three:
first, the anchor removing ring 2 is a split type anchor removing ring 21, the split type anchor removing ring 21 is composed of a screw 211 and a nut 212 sleeved at one end of the screw 211, in the installation state, the screw 211 with external threads is in threaded connection with the safety anchor plate I41 through a screw hole 411 on the safety anchor plate I41, and one end of the nut 212 is propped against the bottom of the single-hole anchor 3 (see fig. 1, 2-1 and 4-1).
Second, the anchor removing ring 2 is an integral anchor removing ring 22, the integral anchor removing ring 22 is a screw rod with an unequal diameter and an inner hole, in the installation state, the small end of the screw rod is in threaded connection with the safety anchor plate I41 through a screw hole 411 on the safety anchor plate I41, and the large end of the screw rod is propped against the bottom of the single-hole anchor 3 (see fig. 2-1 and fig. 4-2).
Third, the anchor removing ring 2 is an integral anchor removing ring 23 with a spigot, the integral anchor removing ring 23 with a spigot is a screw rod with an unequal diameter and an inner hole, the big end is provided with a spigot 231, in the installation state, a single Kong Mao 3 is arranged at the small end of the screw rod and is in threaded connection with the safety anchor plate I41 through a screw hole 411 on the safety anchor plate I41, and the single-hole anchor 3 is inserted into the spigot of the big end of the integral anchor removing ring 23 with a spigot (see fig. 2-1 and fig. 4-3).
The installation construction method of the arch bridge steel strand suspender capable of replacing the single cable comprises the installation construction and the single cable replacement method, and specifically comprises the following steps:
the method comprises the following steps:
A. installing a fixed end anchorage: installing according to a conventional method;
B. installing a tensioning end anchorage device: installing according to a conventional method;
C. stretching: tensioning according to a conventional method;
D. installing a safety anchor:
d1, when the hanger rod is stretched, an active anti-loosening device which is formed by a safety anchor plate I41 with a threaded hole, an anchor removing ring 2 and a single-hole anchor 3 with a clamping piece II 1b is arranged at the tail end of a clamping piece of an anchor at a stretching end, a certain number of steel strands are selected from steel strands arranged at the outermost ring of the safety anchor plate I41 to be installed with a single Kong Mao, the anchor removing ring 2 is arranged between the safety anchor plate I41 and the single-hole anchor, a distance H is reserved between the anchor removing ring 2 and the safety anchor plate I41, and the range of the value of H is as follows: h is 8mm < 20mm (see FIG. 2-1, FIG. 2-2);
d2, stretching the single-hole anchor by a certain stretching force, then anchoring, wherein the stretching force is between 2 tons and 8 tons, and passing through a plurality of single units Kong Mao 3 (see fig. 2-1 and 2-2, wherein the number n of the single-hole anchors 3 is equal to 6) on the peripheral steel twisted wires of the outer ring of the safety anchor plate I41; applying pressure to the safety anchor plate I41 to tighten the clamping piece of the boom anchor;
(II) Single root the cable replacement method comprises the following steps:
A. loose anchor and tension of single hole anchor:
when the single-hole anchor is to be put on, the jack is used for stretching the steel strands after the single-hole anchor, when the stretching force is larger than the anchoring force of the single-hole anchor 3, the single Kong Mao is separated from the anchor-removing ring 2, at the moment, the anchor-removing ring 2 is screwed into the safety anchor plate I41, the distance between the single Kong Mao and the anchor-removing ring is increased, the jack is loosened, the section of steel strands from the single-hole anchor to the clamping piece is very short, therefore, the single Kong Mao and the anchor-removing ring can not touch together any more, then the anchor plate of the single-hole anchor 3 is jacked up, the single-hole anchor clamping piece is taken out, and the anchor loosening and the tension are completed;
a2, repeating the steps to finish all the single-hole anchor loosening and expanding;
B. the safety anchor plate is taken down, and the releasing and the disassembling of the safety anchor are completed;
C. and (3) replacing the single cable, namely replacing the single cable by the steel stranded wires forming the arch bridge suspender according to a conventional method.
Embodiment two:
the safety anchor is an arch bridge steel strand suspender capable of replacing a single cable, which is formed by combining a safety anchor plate II 42 and a clamping piece III 1 c:
in this embodiment, the safety anchor connected with the tension end anchor is formed by combining a safety anchor plate ii 42 and a clamping piece iii 1c, m through holes 421 for penetrating through the steel strands are formed in the safety anchor plate ii 42, n anchor holes 422 for anchoring the steel strands are formed in the outer ring of the safety anchor plate ii 42, the clamping piece iii 1c is arranged in the anchor holes 422, counter bores 423 are formed in the small ends of the anchor holes 422, and the values of m and n are as follows: m is an integer of 3 or more and 1000 or less; n is smaller than m (see fig. 5-1, 5-2, where m is equal to 37 and n is equal to 6).
The installation construction method of the arch bridge steel strand suspender capable of replacing the single cable comprises the installation construction method and the single cable replacement method, and the concrete method is as follows:
the method comprises the following steps:
A. installing a fixed end anchorage: installing according to a conventional method;
B. installing a tensioning end anchorage device: installing according to a conventional method;
C. stretching: tensioning according to a conventional method;
D. installing a safety anchor:
d1, after the boom is tensioned, a safety anchor formed by combining a safety anchor plate II 42 and a clamping piece II 1b is arranged at the tail end of a clamping piece of an anchor at a tensioning end, and the clamping piece II 1b is arranged in an outer ring of the safety anchor plate II 42 and an anchor hole 422 with a counter bore 423;
d2, tensioning the steel strand with the clamping piece II 1b on the safety anchor plate II 42 by a certain tensioning force, and then anchoring, wherein the safety anchor plate II 42 is tightly propped against the suspender anchorage device, and the tensioning force of the clamping piece is between 2 tons and 8 tons;
(II) a single cable changing method:
when the anchor is removed, the clamping piece at the tensioning end is moved back into the counter bore of the safety anchor plate, so that single cable replacement is realized.
Claims (8)
1. The arch bridge steel strand suspender comprises a suspender and a suspender anchor, wherein the suspender anchor comprises a fixed end anchor and a tensioning end anchor; the method is characterized in that: the hanger rod be the combination that the steel strand wires of m single anchors on the hanger rod ground tackle constitute, stretch-draw end ground tackle still connect a safety anchor, stretch-draw end ground tackle include anchor slab (5) and clamping piece I (1 a), open m on anchor slab (5) and be used for passing the anchor eye of steel strand wires, m steel strand wires (10) are anchored on the anchor slab through clamping piece I (1 a), the safety anchor is installed at anchor slab (5) clamping piece tail end, install dish spring (15) between the safety anchor slab of anchor slab (5) and safety anchor, the value range of above-mentioned m is: m is an integer of 3 or more and 1000 or less.
2. An arch bridge steel strand hanger bar with single changeable cable according to claim 1, wherein: the safety anchor is an active anti-loosening device and comprises a safety anchor plate I (41) with a threaded hole, an anchor removing ring (2) and a single Kong Mao (3) provided with a clamping piece II (1 b), wherein a distance H is reserved between the anchor removing ring (2) and the safety anchor plate I (41) during installation; the value range of H is as follows: h is more than or equal to 8mm and less than or equal to 20mm.
3. An arch bridge steel strand hanger bar with single changeable cable according to claim 2, wherein: the anchor removing ring (2) is a split anchor removing ring (21), the split anchor removing ring (21) is composed of a screw rod (211) and a nut (212) sleeved at one end of the screw rod (211), in an installation state, the screw rod (211) with external threads is in threaded connection with the safety anchor plate I (41) through a screw hole in the safety anchor plate I (41), and one end of the nut (212) props against the bottom of the single-hole anchor (3).
4. An arch bridge steel strand hanger bar with single changeable cable according to claim 2, wherein: the anchor removing ring (2) is an integral anchor removing ring (22), the integral anchor removing ring (22) is a screw rod with an unequal diameter and an inner hole, the small end of the screw rod is in threaded connection with the safety anchor plate I (41) through a screw hole on the safety anchor plate I (41) in an installation state, and the large end of the screw rod props against the bottom of the single-hole anchor (3).
5. An arch bridge steel strand hanger bar with single changeable cable according to claim 2, wherein: the integral anchor removing ring (23) with the spigot is characterized in that the anchor removing ring (2) is an integral anchor removing ring (23) with the spigot, the integral anchor removing ring (23) with the spigot is a screw rod with an unequal diameter and an inner hole, the big end of the screw rod is provided with the spigot (231), the small end of the screw rod is in threaded connection with the safety anchor plate I (41) through a screw hole on the safety anchor plate I (41) in an installation state, and the single-hole anchor (3) is inserted into the spigot of the big end of the integral anchor removing ring (23) with the spigot.
6. An arch bridge steel strand hanger bar with single changeable cable according to claim 1, wherein: the safety anchor is formed by combining a safety anchor plate II (42) and a clamping piece III (1 c), m through holes (421) for penetrating through steel strands are formed in the safety anchor plate II (42), n anchor holes (422) for anchoring the steel strands are formed in the outer ring of the safety anchor plate II (42), the clamping piece III (1 c) is arranged in the anchor holes (422), counter bores (423) are formed in the small ends of the anchor holes (422), and the values of m and n are as follows: m is an integer of 3 or more and 1000 or less; n is smaller than m.
7. A method for installing and constructing an arch bridge steel strand suspender capable of replacing a single cable is characterized by comprising the following steps: the method for installing and constructing the arch bridge steel strand suspender capable of replacing the single cable comprises the following steps of installing and constructing and replacing the single cable, wherein the method comprises the following steps of:
the method comprises the following steps:
A. installing a fixed end anchorage: installing according to a conventional method;
B. installing a tensioning end anchorage device: installing according to a conventional method;
C. stretching: tensioning according to a conventional method;
D. installing a safety anchor:
d1, wait the jib stretch-draw to accomplish the back at the clamping piece tail end installation of stretch-draw end ground tackle by take safety anchor board I (41) of screw (411), fade anchor ring (2) and install the initiative locking device that list Kong Mao (3) that clamping piece II (1 b) constitute, during the installation, select to install single Kong Mao on the steel strand wires of a certain amount in the steel strand wires of installing at safety anchor board I (41) outer lane, fade anchor ring (2) and install between safety anchor board I (41) and single hole anchor, fade anchor ring (2) and safety anchor board I (41) leave distance H, the range of taking value of H is: h is more than or equal to 8mm and less than or equal to 20mm;
d2, stretching the single-hole anchor by a certain stretching force, then anchoring, wherein the stretching force is between 2 and 8 tons, and applying pressure to the safety anchor plate I (41) through a plurality of single Kong Mao (3) on the steel twisted wire around the outer ring of the safety anchor plate I (41) to tightly prop up the clamping piece of the suspender anchor;
(II) a single cable changing method:
A. loose anchor and tension of single hole anchor:
a1, when the single-hole anchor is to be put, a jack is used for tensioning a steel strand after the single-hole anchor, when the tensioning force is larger than the anchoring force of the single-hole anchor (3), the single Kong Mao (3) is separated from contact with the anchor-removing ring (2), at the moment, the anchor-removing ring (2) is screwed into the safety anchor plate I (41), the jack is loosened, the single-hole anchor clamping piece is taken out, and the anchor loosening and the putting are completed;
a2, repeating the steps to finish all the single-hole anchor loosening and expanding;
B. the safety anchor plate is taken down, and the releasing and the disassembling of the safety anchor are completed;
C. and (3) replacing the single cable, namely replacing the single cable by the steel stranded wires forming the arch bridge suspender according to a conventional method.
8. A method for installing and constructing an arch bridge steel strand suspender capable of replacing a single cable is characterized by comprising the following steps: the method for installing and constructing the arch bridge steel strand suspender capable of replacing the single cable comprises the following steps of installing and constructing and replacing the single cable, wherein the method comprises the following steps of:
the method comprises the following steps:
A. installing a fixed end anchorage: installing according to a conventional method;
B. installing a tensioning end anchorage device: installing according to a conventional method;
C. stretching: tensioning according to a conventional method;
D. installing a safety anchor:
d1, after the boom is tensioned, a safety anchor formed by combining a safety anchor plate II (42) and a clamping piece II (1 b) is arranged at the tail end of a clamping piece of an anchor at a tensioning end, and the clamping piece II (1 b) is arranged in an outer ring of the safety anchor plate II (42) and an anchor hole (422) with a counter bore (423);
d2, tensioning the steel strand with the clamping piece II (1 b) mounted on the safety anchor plate II (42) by a certain tensioning force, and then anchoring, wherein the safety anchor plate II (42) is tightly propped against the suspender anchorage, and the tensioning force of the clamping piece is between 2 tons and 8 tons;
(II) a single cable changing method:
when the anchor is removed, the clamping piece at the tensioning end is moved back into the counter bore of the safety anchor plate, so that single cable replacement is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818675.0A CN107558352B (en) | 2017-09-12 | 2017-09-12 | Arch bridge steel strand suspender capable of replacing single cable and installation and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818675.0A CN107558352B (en) | 2017-09-12 | 2017-09-12 | Arch bridge steel strand suspender capable of replacing single cable and installation and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107558352A CN107558352A (en) | 2018-01-09 |
| CN107558352B true CN107558352B (en) | 2023-07-25 |
Family
ID=60980747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710818675.0A Active CN107558352B (en) | 2017-09-12 | 2017-09-12 | Arch bridge steel strand suspender capable of replacing single cable and installation and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107558352B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700104B (en) * | 2019-10-17 | 2021-02-26 | 中国十七冶集团有限公司 | Construction platform of suspension bridge suspender tensioning equipment and use method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1001089A1 (en) * | 1998-10-15 | 2000-05-17 | Yincheng Hou | Novel technique for stay cable system |
| JP3150252U (en) * | 2009-02-20 | 2009-05-07 | 陳 耀章 | Structure that can replace single steel wire of bridge cable |
| CN202500087U (en) * | 2012-01-18 | 2012-10-24 | 柳州豪姆机械有限公司 | Anti-sliding cable saddle for single replaceable type low-pylon cable-stayed bridge |
| GB2514621A (en) * | 2013-05-31 | 2014-12-03 | Vsl Int Ag | Cable anchorage |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040159058A1 (en) * | 2003-02-19 | 2004-08-19 | Jacques Gulbenkian | Unbonded post-tensioning system |
| CN202323712U (en) * | 2011-11-11 | 2012-07-11 | 柳州豪姆机械有限公司 | Single replaceable stayed cable anchorage device |
| CN103669209B (en) * | 2013-12-12 | 2016-04-27 | 江阴法尔胜住电新材料有限公司 | The partial cable-stayed bridge of single replacing steel strand can divide fiber tube cable saddle |
| CN104372738B (en) * | 2014-10-30 | 2016-06-01 | 柳州欧维姆机械股份有限公司 | Rope constructional method is changed in a kind of single replaceable anchor heavy stone used as an anchor prestress anchoraging device and installation thereof |
| CN107034785A (en) * | 2017-05-24 | 2017-08-11 | 柳州欧维姆机械股份有限公司 | Rope construction method is changed in a kind of interchangeable anchorage prestress anchoraging device and its installation |
| CN207362674U (en) * | 2017-09-12 | 2018-05-15 | 柳州欧维姆机械股份有限公司 | A kind of arch bridge steel strand wires sunpender that single can change rope |
-
2017
- 2017-09-12 CN CN201710818675.0A patent/CN107558352B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1001089A1 (en) * | 1998-10-15 | 2000-05-17 | Yincheng Hou | Novel technique for stay cable system |
| JP3150252U (en) * | 2009-02-20 | 2009-05-07 | 陳 耀章 | Structure that can replace single steel wire of bridge cable |
| CN202500087U (en) * | 2012-01-18 | 2012-10-24 | 柳州豪姆机械有限公司 | Anti-sliding cable saddle for single replaceable type low-pylon cable-stayed bridge |
| GB2514621A (en) * | 2013-05-31 | 2014-12-03 | Vsl Int Ag | Cable anchorage |
| CN105339553A (en) * | 2013-05-31 | 2016-02-17 | Vsl国际股份公司 | Cable anchorage with bedding material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107558352A (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101831871B (en) | Adjustable wind cable and installing method thereof | |
| CN101638893B (en) | Uniform pressure distribution type anchor cable | |
| CN101603353A (en) | A kind of composite anchorage that is used for anchoring multiple fibre reinforced plastic twisted wire muscle or drag-line | |
| CN101886476B (en) | Prestressed tensioning anchor group single-hole anchor-disassembling device | |
| CN107558352B (en) | Arch bridge steel strand suspender capable of replacing single cable and installation and construction method thereof | |
| CN110258299B (en) | Tapered anti-slip key anchoring steel strand inhaul cable with fork lugs and construction method thereof | |
| CN102587572A (en) | Steel strand stay rope and manufacturing method thereof | |
| CN104947589A (en) | Multistrand finished cable type anchorage prestress anchor device and construction method thereof | |
| CN201261881Y (en) | Uniform pressure distribution type anchor cable | |
| CN102747683B (en) | Wire dividing plate of cold cast anchorage and wire dividing method thereof | |
| CN202611109U (en) | Steel strand connector | |
| CN107034785A (en) | Rope construction method is changed in a kind of interchangeable anchorage prestress anchoraging device and its installation | |
| CN201033945Y (en) | Short strand wire stretching stopping means | |
| CN102561599A (en) | Connector of steel stranded wires and finished twisted steel | |
| CN207761302U (en) | One kind can be used in turn anchor pole tension tool | |
| CN202170962U (en) | Deenyma rope anchoring device | |
| CN217266960U (en) | Tensioning construction tool for prestressed steel strand of nonlinear prestressed pipeline | |
| CN202519876U (en) | Steel strand inhaul cable | |
| CN210946868U (en) | Connector for threaded steel bar and prestressed tendon | |
| CN202214681U (en) | Suspension bridge sling replacing device | |
| CN201714101U (en) | Group anchor single-hole anchor withdrawing mechanism | |
| CN207362674U (en) | A kind of arch bridge steel strand wires sunpender that single can change rope | |
| CN208733626U (en) | Dispersed pressure anchor structure | |
| CN220224938U (en) | Split type antiskid anchor structure | |
| CN204510000U (en) | Suspension cable cable saddle for subsequent use point of fiber tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |