CN110485253B - Anchoring device adapting to longitudinal movement of structure and mounting method - Google Patents
Anchoring device adapting to longitudinal movement of structure and mounting method Download PDFInfo
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- CN110485253B CN110485253B CN201910682688.9A CN201910682688A CN110485253B CN 110485253 B CN110485253 B CN 110485253B CN 201910682688 A CN201910682688 A CN 201910682688A CN 110485253 B CN110485253 B CN 110485253B
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- shaped steel
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an anchoring device adaptive to longitudinal movement of a structure and an installation method, and relates to the technical field of bridge anchoring. The anchoring device includes: the cable guide pipe is internally provided with a cable in a penetrating way, and the cable is fixedly connected with one end of the cable guide pipe through a cable sealing cylinder; the horn-shaped steel protects a section of thick bamboo, the horn-shaped steel protects a section of thick bamboo and is located the cable pipe, and the internal diameter that the horn-shaped steel protected a section of thick bamboo is along the direction progressively increase of keeping away from the sealed section of thick bamboo of cable, the outer wall and the cable pipe inner wall fixed connection that the horn-shaped steel protected a section of thick bamboo. When the stay cable follows the girder and takes place longitudinal deviation, the outer wall of stay cable is hugged closely with the inner wall of a tubaeform steel casing, and the port of restriction stay cable and the sealed section of thick bamboo of stay cable takes place the skew, shifts the concentrated cutting force of the port of the sealed section of thick bamboo of stay cable and stay cable to tubaeform steel casing. The local part of the inhaul cable body is prevented from being subjected to larger concentrated cutting force, and the safety of the anchoring system is improved.
Description
Technical Field
The invention relates to the technical field of bridge anchoring, in particular to an anchoring device adaptive to longitudinal movement of a structure and an installation method.
Background
With the development of cable-stayed bridges at home and abroad, the span of the cable-stayed bridge is larger and larger, and the ratio of the span of the main span to the span of the side span is also larger and larger. The cable-stayed bridge has a complex structure system and a plurality of influence factors, and the auxiliary piers arranged on the side span can reduce the length of the cantilever and increase the integral rigidity of the structure during the construction of the side span, thereby reducing the internal force of the main beam, the bending moment at the bottom of the tower, the deviation at the top of the tower, the vertical deformation of the main beam and the stress of the stay cable of the bridge under the bridge forming state of the bridge and leading the stress of the structure to tend to a reasonable state. In order to prevent the main span structure rigidity of the cable-stayed bridge from being influenced by the deflection of the side span main beam, a link rod is often arranged at an anchoring point of the side span stay cable to be connected with the lower auxiliary pier, so that the pulling force generated by the vertical component force of the cable force can be directly born by the auxiliary pier, the deflection of the side span main beam is reduced, and the rigidity of the main span is greatly improved.
However, the processing of the negative reaction force of the auxiliary pier of the cable-stayed bridge is always a key node for judging whether the bridge type scheme is established or not. Anchoring the main beam on the auxiliary pier stud through the stay is one of the schemes with highest efficiency and best economy, however, the key problem of the scheme is that if the main beam longitudinally displaces after anchoring, as shown in fig. 5, the stay 6 of the anchoring device and the port of the stay sealing cylinder 7 are subjected to large concentrated cutting force, and the stay 6 is subjected to large concentrated cutting force for a long time, so that the potential hazards of abrasion and breakage easily occur, and the safety of the anchoring system is seriously influenced. Therefore, the existing anchoring scheme can only be applied to the medium and small span bridges with small anchoring force and small longitudinal displacement, and the requirement of anchoring the large-span main beam cannot be met. There is currently no solution for an anchoring configuration that can accommodate longitudinal movement of a structure.
Disclosure of Invention
The invention aims to overcome the defects that the ports of a guy cable and a guy cable sealing cylinder are subjected to larger concentrated cutting force under the influence of longitudinal displacement of a main beam of the conventional anchoring device in the background art, the guy cable is easily worn and broken due to the large concentrated cutting force for a long time, and the safety of an anchoring system is seriously influenced, and provides the anchoring device and the mounting method which are suitable for longitudinal displacement of a structure.
The invention provides an anchoring device adapting to longitudinal movement of a structure, which is characterized by comprising:
the cable guide pipe is internally provided with a cable in a penetrating way, and the cable is fixedly connected with one end of the cable guide pipe through a cable sealing cylinder;
the horn-shaped steel protects a section of thick bamboo, the horn-shaped steel protects a section of thick bamboo and is located the cable pipe, and the internal diameter that the horn-shaped steel protected a section of thick bamboo is along the direction progressively increase of keeping away from the sealed section of thick bamboo of cable, the outer wall and the cable pipe inner wall fixed connection that the horn-shaped steel protected a section of thick bamboo.
The preferred scheme is as follows: the horn-shaped steel protects and is equipped with hoop stiffening rib and radial stiffening rib between the outer wall of a section of thick bamboo and the cable pipe inner wall, and hoop stiffening rib is ring shape, and radial stiffening rib is rectangular shape, and hoop stiffening rib and radial stiffening rib and the outer wall of a section of thick bamboo and cable pipe inner wall fixed connection are protected to the horn-shaped steel.
The preferred scheme is as follows: radial stiffening rib is no less than 8, and radial stiffening rib protects a section of thick bamboo's outer wall circumference equipartition along tubaeform steel and arranges, hoop stiffening rib is equipped with a plurality ofly, and a plurality of hoop stiffening rib protect a section of thick bamboo's axis direction interval equipartition along tubaeform steel and arrange, and the internal diameter of a plurality of hoop stiffening rib is along the direction of keeping away from the sealed section of thick bamboo of cable progressively increase, and distance between two adjacent hoop stiffening ribs is not more than 200 mm.
The preferred scheme is as follows: the axis of the horn-shaped steel casing is collinear with the axis of the cable guide pipe, the inner surface of the horn-shaped steel casing is formed by rotating a flat curve formed by combining a straight line and a circular curve for 360 degrees around the axis of the horn-shaped steel casing, and the distance from the circular curve to the axis of the horn-shaped steel casing is the radius R of the circular curve;
the inner surface of the horn-shaped steel protection cylinder is provided with a rubber pad, the rubber pad is attached to the inner wall of the horn-shaped steel protection cylinder, and the outer wall of the inhaul cable is attached to the rubber pad.
The preferred scheme is as follows: the straight line of the flat curve is parallel to the axis of the horn-shaped steel casing, the length of the straight line is not less than 200mm, and the distance from the straight line to the axis of the horn-shaped steel casing is the sum of the radius of the inhaul cable, the thickness of the rubber pad and the manufacturing error of 3 mm.
The preferred scheme is as follows: the straight line of the flat curve is tangent to the circular curve, the radius R of the circular curve is more than or equal to P/q, wherein P is the guy rope force, and q is the radial bearing capacity of the horn-shaped steel casing; the length L of the circular curve is more than or equal to 2SR/H, wherein S is the longitudinal displacement of the stay cable, and H is the height difference of the upper anchor point and the lower anchor point of the stay cable.
The preferred scheme is as follows: the one end welding of cable pipe has the anchor backing plate, and the other end welding of cable pipe has and seals anchor plate, the both ends of horn-shaped steel protects a section of thick bamboo outer wall are equipped with tip hoop stiffening rib respectively, tip hoop stiffening rib and the inner wall welded connection of cable pipe, hoop stiffening rib and the laminating of radial stiffening rib and the inner wall of cable pipe.
The preferred scheme is as follows: the horn-shaped steel protection cylinder is positioned at one end far away from the inhaul cable sealing cylinder in the cable guide pipe, and the horn-shaped steel protection cylinder is positioned on the outer side of the inhaul cable sealing cylinder.
The preferred scheme is as follows: the yield strength of the structural material of the horn-shaped steel casing is not less than 345 MPa.
The invention also provides an installation method of the anchoring device adapting to the longitudinal movement of the structure, which comprises the following steps:
the cable guide pipe consists of a near anchor section and a far anchor section, and is divided into the near anchor section and the far anchor section for facilitating the welding of the circumferential stiffening rib at the end part and the cable guide pipe;
processing a horn-shaped steel protection cylinder according to a designed flat curve, and attaching a rubber pad to the inner wall of the horn-shaped steel protection cylinder;
welding a radial stiffening rib, an annular stiffening rib and an end annular stiffening rib on the outer wall of the horn-shaped steel casing according to a set sequence;
sleeving the horn-shaped steel casing part into the near anchor section of the cable guide pipe, and welding the end part annular stiffening rib at one end of the horn-shaped steel casing with the inner wall of the cable guide pipe according to a set position;
sleeving a far anchor section of the cable guide pipe, welding a near anchor section and the far anchor section of the cable guide pipe into a whole, and ensuring that the axes of the near anchor section and the far anchor section are overlapped;
welding and connecting an end part annular stiffening rib at the other end of the horn-shaped steel protecting cylinder with the inner wall of the cable guide pipe, and forming the horn-shaped steel protecting cylinder and the cable guide pipe into a whole;
one end of the cable guide pipe is welded with an anchor backing plate, and the other end of the cable guide pipe is welded with an anchor sealing plate;
and (4) penetrating a pulling rope into the rope guide pipe for tensioning.
On the basis of the technical scheme, compared with the prior art, the invention has the following advantages:
1) the anchoring device is characterized in that a horn-shaped steel protective cylinder which is suitable for longitudinal deviation of a guy cable is arranged in a cable guide pipe, and the inner surface of the horn-shaped steel protective cylinder is formed by rotating a flat curve formed by combining a straight line and a circular curve for 360 degrees around the axis of the horn-shaped steel protective cylinder. When the stay cable follows the girder and takes place longitudinal deviation, the outer wall of stay cable is hugged closely with the inner wall of a tubaeform steel casing, and the port of restriction stay cable and the sealed section of thick bamboo of stay cable takes place the skew, shifts the concentrated cutting force of the port of the sealed section of thick bamboo of stay cable and stay cable to tubaeform steel casing. Because the contact area between the outer wall of the stay cable and the inner wall of the horn-shaped steel protection cylinder is increased by the horn-shaped steel protection cylinder, the local part of the stay cable body is prevented from being subjected to larger concentrated cutting force, and the safety of an anchoring system is improved.
2) According to the anchoring device adaptive to the longitudinal movement of the structure, the rubber pad is attached to the inner wall of the horn-shaped steel casing, the rubber pad has good flexibility and wear resistance, and when the outer wall of the stay cable is in contact with the rubber pad, the surface wear of the stay cable can be obviously reduced, so that the outer wall of the stay cable is protected. This anchoring device protects a section of thick bamboo outer wall at the tubaeform steel and welds radial stiffening rib, hoop stiffening rib and tip hoop stiffening rib according to setting for the order, and radial stiffening rib, hoop stiffening rib and tip hoop stiffening rib make cable pipe and tubaeform steel protect a formation whole, and the structural strength of a section of thick bamboo is protected to promotion tubaeform steel that is showing improves tubaeform steel and protects a durability.
3) The anchoring device is specially designed in the circular curve section of the horn-shaped steel casing, and the radius R of the circular curve is not less than the ratio of the guy cable force P to the radial bearing capacity q of the horn-shaped steel casing; the length L of the circular curve is not less than 2 times of longitudinal displacement S of the cable multiplied by the radius R of the horn-shaped steel casing and then divided by the height difference H of the upper anchor point and the lower anchor point of the cable. The size and the shape of the horn-shaped steel casing of the anchoring device are obtained through mechanical accurate calculation, and the use performance requirements of the anchoring device are met.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic view of a cable moved longitudinally after an embodiment of the present invention is used;
FIG. 5 is a schematic diagram of longitudinal movement of a cable in the prior art.
Reference numerals: 1-horn-shaped steel casing, 2-end circumferential stiffening rib, 3-circumferential stiffening rib, 4-radial stiffening rib, 5-rubber pad, 6-inhaul cable, 7-inhaul cable sealing cylinder, 8-cable guide pipe, 9-anchor sealing plate and 10-anchor backing plate.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
Referring to fig. 1 to 3, an embodiment of the present invention provides an anchoring device adapted to a longitudinal movement of a structure, including:
the cable guide pipe 8 is of a cylindrical steel pipe structure, the cable guide pipe 8 is internally provided with the cable 6 in a penetrating way, and one end of the cable 6 is fixedly connected with one end of the cable guide pipe 8 through the cable sealing cylinder 7.
The cable protection device comprises a horn-shaped steel protection cylinder 1, wherein the horn-shaped steel protection cylinder 1 is positioned in a cable guide pipe 8, the horn-shaped steel protection cylinder 1 is positioned at one end far away from a cable sealing cylinder 7 in the cable guide pipe 8, and the horn-shaped steel protection cylinder 1 is positioned outside the cable sealing cylinder 7. The inner diameter of the horn-shaped steel protection cylinder 1 is gradually increased along the direction far away from the inhaul cable sealing cylinder 7, and the outer wall of the horn-shaped steel protection cylinder 1 is fixedly connected with the inner wall of the cable guide pipe 6. Fig. 2 is a sectional view taken along a-a in fig. 1, and fig. 3 is a sectional view taken along B-B in fig. 1, and the sectional view of the trumpet shaped steel casing 1 in fig. 3 is enlarged, not actually large, in order to highlight the difference in the change between the sectional view of the trumpet shaped steel casing 1 in fig. 3 and the sectional view of the trumpet shaped steel casing 1 in fig. 2. The axial line of the horn-shaped steel protection cylinder 1 is collinear with the axial line of the cable guide pipe 8, the inner surface of the horn-shaped steel protection cylinder 1 is formed by rotating a flat curve formed by combining a straight line and a circular curve for 360 degrees around the axial line of the horn-shaped steel protection cylinder 1, and the distance from the circular curve to the axial line of the horn-shaped steel protection cylinder 1 is the radius R of the circular curve.
The straight line of the flat curve is tangent to the circular curve, the radius R of the circular curve is more than or equal to P/q, wherein P is the guyed force, and q is the radial bearing capacity of the horn-shaped steel casing; the length L of the circular curve is more than or equal to 2SR/H, wherein S is the longitudinal displacement of the stay cable 6, and H is the height difference of the upper anchor point and the lower anchor point of the stay cable 6. Wherein the straight line of the flat curve is parallel to the axis of the trumpet-shaped steel casing 1, the length of the straight line is not less than 200mm, and the distance from the straight line to the axis of the trumpet-shaped steel casing 1 is the sum of the radius of the inhaul cable 6, the thickness of the rubber pad 5 and the manufacturing error of 3 mm. The internal surface of the horn-shaped steel protection cylinder 1 formed by rotating 360 degrees around the axis of the horn-shaped steel protection cylinder 1 in a straight line is a transition section for longitudinal movement of the inhaul cable 6, when the inhaul cable 6 longitudinally moves, the inhaul cable 6 positioned in the internal surface straight line range of the horn-shaped steel protection cylinder 1 does not longitudinally move, and therefore the port of the inhaul cable 6 and the port of the inhaul cable sealing cylinder 7 are prevented from being subjected to large concentrated cutting force.
An annular stiffening rib 3 and a radial stiffening rib 4 are arranged between the outer wall of the horn-shaped steel protection cylinder 1 and the inner wall of the cable guide pipe 8, and the annular stiffening rib 3 and the radial stiffening rib 4 are welded with the outer wall of the horn-shaped steel protection cylinder 1. Radial stiffening rib 4 is no less than 8, radial stiffening rib 4 protects a section of thick bamboo 1's outer wall circumference equipartition along tubaeform steel and arranges, hoop stiffening rib 3 is equipped with a plurality ofly, hoop stiffening rib 3's quantity is confirmed according to tubaeform steel protection 1's length, a plurality of hoop stiffening rib 3 protect a section of thick bamboo 1's axis direction interval equipartition along tubaeform steel and arrange, and a plurality of hoop stiffening rib 3's internal diameter is along the direction of keeping away from the sealed section of thick bamboo 7 of cable progressively increases, distance between two adjacent hoop stiffening rib 3 is not more than 200 mm.
The rubber pad 5, the thickness of the rubber pad 5 is about 10mm, and the rubber pad 5 is attached to the inner wall of the horn-shaped steel casing 1; when the stay cable 6 moves longitudinally, the outer wall of the stay cable 6 is attached to the rubber pad 5.
Principle of operation
The invention relates to an anchoring device adapting to longitudinal movement of a structure, which is characterized in that a horn-shaped steel protective cylinder 1 adapting to longitudinal deviation of a guy cable 6 is arranged in a cable guide pipe 8, and the inner surface of the horn-shaped steel protective cylinder 1 is formed by rotating a flat curve formed by combining a straight line and a circular curve for 360 degrees around the axis of the horn-shaped steel protective cylinder 1. When the stay cable 6 is longitudinally deviated along with the main beam, the outer wall of the stay cable 6 is tightly attached to the inner wall of the horn-shaped steel protection cylinder 1, the deviation of the port of the stay cable 6 and the port of the stay cable sealing cylinder 7 is limited, and the concentrated cutting force of the port of the stay cable 6 and the port of the stay cable sealing cylinder 7 is transferred to the horn-shaped steel protection cylinder 1. As shown in fig. 4, the contact area between the outer wall of the stay cable 6 and the inner wall of the horn-shaped steel casing 1 is increased by the horn-shaped steel casing 1, so that the local part of the cable body of the stay cable 6 is prevented from being subjected to a large concentrated cutting force, and the safety of the anchoring system is improved.
In order to improve the structural strength of the horn-shaped steel protection barrel 1, the radial stiffening rib 4, the annular stiffening rib 3 and the end annular stiffening rib 2 are welded on the outer wall of the horn-shaped steel protection barrel 1 according to a set sequence by the anchoring device, the radial stiffening rib 4, the annular stiffening rib 3 and the end annular stiffening rib 2 enable the cable guide pipe 8 and the horn-shaped steel protection barrel 1 to form a whole, the structural strength of the horn-shaped steel protection barrel 1 is obviously improved, and the durability of the horn-shaped steel protection barrel 1 is improved. In order to reduce the surface abrasion of the stay cable 6, the rubber pad 5 is attached to the inner wall of the horn-shaped steel casing 1 of the anchoring device, the rubber pad 5 has good flexibility and wear resistance, the surface abrasion of the stay cable 6 can be obviously reduced when the outer wall of the stay cable 6 is in contact with the rubber pad 5, and the outer wall of the stay cable 6 is protected.
In order to meet the use performance requirement of the anchoring device, the shape and the size of the high-horn-shaped steel casing 1 are specially designed according to the circular curve section of the horn-shaped steel casing and the actual engineering requirement. The radius R of the circular curve is not less than the ratio of the stay rope force P to the radial bearing capacity q of the horn-shaped steel casing; the length L of the circular curve is not less than 2 times of longitudinal displacement S of the cable multiplied by the radius R of the horn-shaped steel casing and then divided by the height difference H of the upper anchor point and the lower anchor point of the cable. The size and the shape of the horn-shaped steel casing 1 of the anchoring device are obtained through mechanical accurate calculation, and the use performance requirements of the anchoring device are met.
In the scheme of the preferred embodiment, one end of a cable guide pipe 8 is welded with an anchor backing plate 10, the other end of the cable guide pipe 8 is welded with an anchor sealing plate 9, two ends of the outer wall of a horn-shaped steel casing 1 are respectively provided with an end part annular stiffening rib 2, the end part annular stiffening rib 2 is welded with the inner wall of the cable guide pipe 8, and the annular stiffening rib 3 and the radial stiffening rib 4 are attached to the inner wall of the cable guide pipe 8. The yield strength of the structural materials of the horn-shaped steel casing 1, the end part annular stiffening rib 2, the annular stiffening rib 3 and the radial stiffening rib 4 is not less than 345MPa, and the radial force bearing capacity of the anchoring device is improved.
Example 2
Referring to fig. 1 to 3, in another aspect, the present invention provides a method for installing an anchoring device to accommodate a longitudinal movement of a structure, including the steps of:
And 3, after the horn-shaped steel guard 1 is processed and formed, attaching a rubber pad 5 to the inner wall of the horn-shaped steel guard barrel 1.
And 4, welding a radial stiffening rib 4, a circumferential stiffening rib 3 and an end circumferential stiffening rib 2 on the outer wall of the horn-shaped steel casing 1 according to a set sequence.
And 5, sleeving part of the horn-shaped steel protective cylinder 1 into a near anchor section of the cable guide pipe 8, and welding an end part annular stiffening rib 2, close to one end of the cable sealing cylinder 7, on the horn-shaped steel protective cylinder 1 with the inner wall of the cable guide pipe 8 according to a set position.
And 6, sleeving the far anchor section of the cable guide pipe 8, welding the near anchor section and the far anchor section of the cable guide pipe 8 into a whole, and ensuring that the axes of the near anchor section and the far anchor section are overlapped.
And 7, welding the end part annular stiffening rib 2 at one end of the horn-shaped steel protecting cylinder 1, which is far away from the inhaul cable sealing cylinder 7, with the inner wall of the cable guide pipe 8, and forming the horn-shaped steel protecting cylinder 1 and the cable guide pipe 8 into a whole.
And 8, welding an anchor backing plate 10 at one end of the cable guide pipe 8 close to the cable sealing cylinder 7, and welding an anchor sealing plate 9 at one end of the cable guide pipe 8 far away from the cable sealing cylinder 7.
And 9, finally, penetrating a stay cable 6 into the cable guide pipe 8 for tensioning, and connecting the main beam with the auxiliary pier.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (9)
1. An anchoring device that accommodates longitudinal movement of a structure, comprising:
the cable guide pipe (8), a cable (6) penetrates through the cable guide pipe (8), and the cable (6) is fixedly connected with one end of the cable guide pipe (8) through a cable sealing cylinder (7);
the cable guide pipe is characterized by comprising a horn-shaped steel protecting cylinder (1), wherein the horn-shaped steel protecting cylinder (1) is positioned in the cable guide pipe (8), the inner diameter of the horn-shaped steel protecting cylinder (1) is gradually increased along the direction far away from the cable sealing cylinder (7), and the outer wall of the horn-shaped steel protecting cylinder (1) is fixedly connected with the inner wall of the cable guide pipe (8);
the axial line of the horn-shaped steel protection cylinder (1) is collinear with the axial line of the cable guide pipe (8), the inner surface of the horn-shaped steel protection cylinder (1) is formed by rotating a flat curve formed by combining a straight line and a circular curve for 360 degrees around the axial line of the horn-shaped steel protection cylinder (1), and the distance from the circular curve to the axial line of the horn-shaped steel protection cylinder (1) is the radius R of the circular curve;
the inner surface of the horn-shaped steel protection cylinder (1) is provided with a rubber pad (5), the rubber pad (5) is attached to the inner wall of the horn-shaped steel protection cylinder (1), and the outer wall of the inhaul cable (6) is attached to the rubber pad (5).
2. An anchoring device for accommodating longitudinal movement of a structure as defined in claim 1, wherein:
the horn-shaped steel protects and is equipped with hoop stiffening rib (3) and radial stiffening rib (4) between the outer wall of a section of thick bamboo (1) and cable pipe (8) inner wall, hoop stiffening rib (3) are ring shape, and radial stiffening rib (4) are rectangular shape, and hoop stiffening rib (3) and radial stiffening rib (4) protect the outer wall of a section of thick bamboo (1) and cable pipe (8) inner wall fixed connection with horn-shaped steel.
3. An anchoring device for accommodating longitudinal movement of a structure as defined in claim 2, wherein:
radial stiffening rib (4) are no less than 8, and radial stiffening rib (4) are arranged along the outer wall circumference equipartition that a horn-shaped steel protects a section of thick bamboo (1), hoop stiffening rib (3) are equipped with a plurality ofly, and a plurality of hoop stiffening rib (3) are arranged along the axis direction interval equipartition that a horn-shaped steel protected a section of thick bamboo (1), and the internal diameter of a plurality of hoop stiffening rib (3) is along the direction of keeping away from the sealed section of thick bamboo (7) of cable progressively increase, and two adjacent hoop stiffening rib's (3) between the distance is not more than 200 mm.
4. An anchoring device for accommodating longitudinal movement of a structure as defined in claim 1, wherein:
the straight line of the flat curve is parallel to the axis of the horn-shaped steel casing (1), the length of the straight line is not less than 200mm, and the distance from the straight line to the axis of the horn-shaped steel casing (1) is the sum of the radius of the inhaul cable (6), the thickness of the rubber pad (5) and the manufacturing error of 3 mm.
5. An anchoring device for accommodating longitudinal movement of a structure as defined in claim 4, wherein:
the straight line of the flat curve is tangent to the circular curve, the radius R of the circular curve is more than or equal to P/q, wherein P is the guy rope force, and q is the radial bearing capacity of the horn-shaped steel casing; the length L of the circular curve is more than or equal to 2SR/H, wherein S is the longitudinal displacement of the stay cable (6), and H is the height difference of the upper anchor point and the lower anchor point of the stay cable (6).
6. An anchoring device for accommodating longitudinal movement of a structure as defined in claim 1, wherein:
the welding of the one end of cable pipe (8) has anchor backing plate (10), and the other end welding of cable pipe (8) has and seals anchor slab (9), the both ends of a horn steel casing (1) outer wall are equipped with tip hoop stiffening rib (2) respectively, tip hoop stiffening rib (2) and the inner wall welded connection of cable pipe (8), hoop stiffening rib (3) and radial stiffening rib (4) and the inner wall laminating of cable pipe (8).
7. An anchoring device for accommodating longitudinal movement of a structure as defined in claim 1, wherein:
the horn-shaped steel protection cylinder (1) is positioned at one end far away from the inhaul cable sealing cylinder (7) in the cable guide pipe (8), and the horn-shaped steel protection cylinder (1) is positioned on the outer side of the inhaul cable sealing cylinder (7).
8. An anchoring device for accommodating longitudinal movement of a structure as defined in claim 1, wherein:
the yield strength of the structural material of the horn-shaped steel casing (1) is not less than 345 MPa.
9. A method of installing an anchoring device to accommodate longitudinal movement of a structure according to any of claims 1 to 8, comprising the steps of:
the cable guide pipe (8) consists of a near anchor section and a far anchor section, and the cable guide pipe (8) is divided into the near anchor section and the far anchor section for facilitating the welding of the end part annular stiffening rib (2) and the cable guide pipe (8);
processing a horn-shaped steel protection cylinder (1) according to a designed flat curve, and attaching a rubber pad (5) to the inner wall of the horn-shaped steel protection cylinder (1);
welding a radial stiffening rib (4), a circumferential stiffening rib (3) and an end circumferential stiffening rib (2) on the outer wall of the horn-shaped steel casing (1) according to a set sequence;
sleeving part of the horn-shaped steel casing (1) into a near anchor section of the cable guide pipe (8), and welding an end part annular stiffening rib (2) at one end of the horn-shaped steel casing (1) with the inner wall of the cable guide pipe (8) according to a set position;
sleeving a far anchor section of the cable guide pipe (8), welding a near anchor section and the far anchor section of the cable guide pipe (8) into a whole, and ensuring that the axes of the near anchor section and the far anchor section are overlapped;
welding and connecting an end part annular stiffening rib (2) at the other end of the horn-shaped steel casing (1) with the inner wall of the cable guide pipe (8), and forming the horn-shaped steel casing (1) and the cable guide pipe (8) into a whole;
one end of the cable guide pipe (8) is welded with an anchor backing plate (10), and the other end of the cable guide pipe (8) is welded with an anchor sealing plate (9);
the cable guide pipe (8) is penetrated with a cable (6) for tensioning.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682688.9A CN110485253B (en) | 2019-07-26 | 2019-07-26 | Anchoring device adapting to longitudinal movement of structure and mounting method |
| PCT/CN2020/091010 WO2021017581A1 (en) | 2019-07-26 | 2020-05-19 | Anchoring apparatus that adapts to longitudinal movement of structure and installation method |
| EP20847198.7A EP4006231A4 (en) | 2019-07-26 | 2020-05-19 | Anchoring apparatus that adapts to longitudinal movement of structure and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682688.9A CN110485253B (en) | 2019-07-26 | 2019-07-26 | Anchoring device adapting to longitudinal movement of structure and mounting method |
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| Publication Number | Publication Date |
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| CN110485253A CN110485253A (en) | 2019-11-22 |
| CN110485253B true CN110485253B (en) | 2021-08-24 |
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| CN201910682688.9A Active CN110485253B (en) | 2019-07-26 | 2019-07-26 | Anchoring device adapting to longitudinal movement of structure and mounting method |
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| Country | Link |
|---|---|
| EP (1) | EP4006231A4 (en) |
| CN (1) | CN110485253B (en) |
| WO (1) | WO2021017581A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485253B (en) * | 2019-07-26 | 2021-08-24 | 中铁大桥勘测设计院集团有限公司 | Anchoring device adapting to longitudinal movement of structure and mounting method |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2135999C3 (en) * | 1971-07-19 | 1981-07-16 | Hein, Lehmann AG, 4000 Düsseldorf | Guide a tension member |
| JP2909233B2 (en) * | 1991-02-12 | 1999-06-23 | 神鋼鋼線工業株式会社 | Cable support device |
| JP4212957B2 (en) * | 2003-05-28 | 2009-01-21 | オリエンタル白石株式会社 | Grout injection method combined with vacuum pump at outer cable fixing part of PC bridge |
| JP2005171604A (en) * | 2003-12-10 | 2005-06-30 | Anderson Technology Kk | Anti-corrosive structure of outer cable of pc construction |
| CN1268818C (en) * | 2004-08-18 | 2006-08-09 | 上海市隧道工程轨道交通设计研究院 | Method of connecting steel inhaul cable for tubulation joint |
| KR101546844B1 (en) * | 2013-07-17 | 2015-08-24 | (주)태성에스엔아이 | Anchorage apparatus for cable |
| CN204455824U (en) * | 2015-02-11 | 2015-07-08 | 中铁第四勘察设计院集团有限公司 | A kind of cable stayed bridge Suo Liang connects anchor tie plate assembly |
| CN205171369U (en) * | 2015-12-05 | 2016-04-20 | 中交通力建设股份有限公司 | PC roof beam cable -stay bridge suo liang anchor structure |
| CN108004907A (en) * | 2018-01-26 | 2018-05-08 | 西安市政设计研究院有限公司 | A kind of lattice-type steel truss pylon cable-stayed bridge steel cable anchor system |
| CN208563108U (en) * | 2018-06-05 | 2019-03-01 | 中铁大桥勘测设计院集团有限公司 | Side case combination girder stayed-cable bridge cable beam anchoring construction |
| CN110485253B (en) * | 2019-07-26 | 2021-08-24 | 中铁大桥勘测设计院集团有限公司 | Anchoring device adapting to longitudinal movement of structure and mounting method |
-
2019
- 2019-07-26 CN CN201910682688.9A patent/CN110485253B/en active Active
-
2020
- 2020-05-19 WO PCT/CN2020/091010 patent/WO2021017581A1/en unknown
- 2020-05-19 EP EP20847198.7A patent/EP4006231A4/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4006231A1 (en) | 2022-06-01 |
| WO2021017581A1 (en) | 2021-02-04 |
| EP4006231A4 (en) | 2023-08-02 |
| CN110485253A (en) | 2019-11-22 |
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