CN114016405A - Method for installing pylon cable guide pipe of cable-stayed bridge - Google Patents
Method for installing pylon cable guide pipe of cable-stayed bridge Download PDFInfo
- Publication number
- CN114016405A CN114016405A CN202111424166.2A CN202111424166A CN114016405A CN 114016405 A CN114016405 A CN 114016405A CN 202111424166 A CN202111424166 A CN 202111424166A CN 114016405 A CN114016405 A CN 114016405A
- Authority
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- China
- Prior art keywords
- cable guide
- guide pipe
- preformed hole
- cable
- tower column
- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000004567 concrete Substances 0.000 claims abstract description 49
- 238000009434 installation Methods 0.000 claims abstract description 31
- 239000011440 grout Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 239000002023 wood Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 13
- 238000009415 formwork Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses a method for installing a cable-stayed bridge tower column cable guide pipe, which comprises the following steps of: s1, manufacturing a preformed hole template according to the structural size of the cable conduit, and wrapping the chiseling-free grout stopping belt; s2, mounting a preformed hole template after the installation of the tower column segment steel bars to be constructed is completed, wherein the preformed hole template is fixed by a stiff framework; s3, constructing concrete of the tower column section to be constructed, and removing the preformed hole template to obtain a preformed hole; s4, hoisting and installing the cable guide pipe in the reserved hole, positioning the cable guide pipe, and fixing the cable guide pipe by using a rigid framework after positioning; and S5, installing a sealing template, and filling the cavity between the concrete filling cable guide pipe and the preformed hole with the filling concrete. The cable guide pipe installation method adopted by the invention avoids the problems of difficult position adjustment and difficult positioning of directly installed cable guide pipes, has high spatial position precision of the installed cable guide pipes, accurate positioning, installation time saving in the whole process and obvious benefits, can accelerate the construction progress of the whole bridge tower, improves the construction efficiency and reduces the safety risk of installation operation.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a method for installing a cable guide pipe of a tower column of a cable-stayed bridge.
Background
The stayed cable is a tie for connecting the tower and the beam of the cable-stayed bridge, is a bearing system of the main beam of the cable-stayed bridge, is led out by a cable guide pipe embedded in a reinforced concrete tower column, and the installation and the accurate positioning are one of the key processes of the construction of the cable-stayed bridge and are also one of the difficulties. In the cable-stayed bridge cable conduit installation method in the prior art, a stiff framework is firstly installed during construction of tower column sections, then steel bars are installed, cable-stayed cable conduits are installed in a positioning mode, concrete is poured, the cable-stayed cable installation mainly utilizes the stiff framework for temporary positioning, a measurer performs spatial position lofting, position adjustment is performed by utilizing a tower crane and a chain hoist, the cable conduits are always in a temporary fixed state before concrete pouring, the vertical height of the cable conduits in the whole cable-stayed bridge, which is closer to the tower column, is higher, and the stiff framework in one tower column concrete pouring section cannot meet the requirement of fixing the cable-stayed conduit which spans two tower column pouring sections and is longer; on the other hand, when the cable guide pipe is installed, concrete at a tower column stage to be constructed is not poured, when the upper end of the cable guide pipe is positioned, an operation construction platform is not arranged at the upper end of the cable guide pipe, a framework for fixing the cable guide pipe is not arranged, and the cable guide pipe is difficult to position, low in efficiency and high in construction risk. For the condition that the lower end of the cable guide pipe is exposed out of the concrete outer side of the bridge tower, the cable guide pipe needs to be installed firstly, then concrete is poured, holes are formed in the outer formwork of the standard section creeping formwork, the integrity of the concrete pouring formwork is damaged, the appearance quality of the lower section tower column is affected, the positions of the holes are not well determined, and the precision requirement is high.
Disclosure of Invention
The invention aims to solve the problems that cable guide pipes are difficult to position, construction risks are high and concrete pouring templates are difficult to manufacture when the cable guide pipes are installed at pouring sections spanning two towers and are high in vertical height in the prior art, and provides an installation method of cable-stayed bridge tower column cable guide pipes.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method for installing a cable guide pipe of a tower column of a cable-stayed bridge comprises the following steps:
s1, manufacturing a preformed hole template according to the structural size of the cable guide pipe, and then wrapping a chiseling-free grout stop belt on the contact surface of the preformed hole template and the concrete of the tower column;
s2, mounting the preformed hole template after the installation of the steel bars of the tower column section to be constructed is completed, wherein the mounting angle of the preformed hole template is the same as that of the cable guide pipe, the lower end of the preformed hole template is flush with the outer side of the constructed tower column section, the upper end of the preformed hole template is flush with the top surface of the tower column section to be constructed, and the preformed hole template is fixed by a stiff framework;
s3, constructing concrete of the tower column segment to be constructed, and removing the preformed hole template after the concrete is initially set to form a preformed hole;
s4, hoisting and installing the cable guide pipe in the reserved hole, positioning the cable guide pipe, fixing the cable guide pipe by using a rigid framework after positioning, and exposing the lower end of the cable guide pipe out of the tower column, namely the outer side of the constructed tower column section;
and S5, installing a sealing template, wherein the sealing template is installed at the intersection of the outer side of the constructed tower column segment and the cable guide pipe, filling the cavity between the cable guide pipe and the preformed hole with filling concrete, and the filling concrete and the concrete of the tower column have the same label.
The installation method of the cable guide pipe comprises the steps of manufacturing a preformed hole template suitable for the cable guide pipe in advance in order to reduce construction safety risks and reduce installation and positioning difficulty of the cable guide pipe, and then fixing the preformed hole template by using a stiff framework through measurement lofting, wherein the installation angle of the preformed hole template is the same as the design angle of the cable guide pipe installed in a tower column section; after the concreting is solidified, removing the preformed hole template to form a preformed hole; and then installing a stiff framework of the next tower column segment, positioning and installing the cable guide pipe in the reserved hole, fixing the cable guide pipe by using the stiff framework of the next tower column segment after measuring, lofting and positioning the cable guide pipe, installing a sealing template for plugging a gap between the cable guide pipe and the outer side of the tower column, filling a cavity between the cable guide pipe and the reserved hole with filling concrete with the same grade and good fluidity, filling the whole annular cavity with the filling concrete, completing positioning and installing the cable guide pipe, and performing subsequent process construction.
According to the invention, before the preformed hole template is installed, a chiseling-free grout stopping belt is wrapped on the concrete contact surface of the preformed hole template and the tower column, and after the preformed hole template is removed, the chiseling-free grout stopping belt is attached to the concrete surface in the hole, so that the chiseling of the concrete surface in a narrow space is avoided.
Further, the inner diameter of the preformed hole template is 10-30cm larger than that of the cable guide pipe. The cavity between the preformed hole template cable guide pipe and the preformed hole is sufficient, so that the cable guide pipe is convenient to mount and position.
Further, the preformed hole template is made of wood boards, the cross section of the preformed hole template is square, the square is convenient to manufacture the preformed hole template through the wood boards, and the preformed hole template is convenient to dismantle when the wood boards are manufactured.
Furthermore, a plurality of stiffening plates are arranged in the preformed hole template, the stiffening plates are uniformly arranged in the preformed hole template at intervals, and the strength of the preformed hole template is enhanced by the arrangement of the stiffening plates.
Further, the preformed hole template adopts the plastic slab preparation to form, the cross-section of preformed hole template is circular or square, and further, the preformed hole template adopts the PVC pipe preparation to form, the cross-section of preformed hole template is circular.
Further, the concrete for pouring the cavity between the cable guide pipe and the reserved hole is self-compacting micro-expansion concrete.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the installation method of the cable guide pipe, the preformed hole template is firstly manufactured, the preformed hole template is removed to obtain the preformed hole, the cable guide pipe is installed in the preformed hole, the problems that the cable guide pipe is difficult to adjust and position when being directly installed are solved, the spatial position precision of the installed cable guide pipe is high, the positioning is accurate, the installation time is saved in the whole process, the benefit is obvious, the construction progress of the whole bridge tower can be accelerated, the construction efficiency is improved, and meanwhile, the safety risk of installation operation is reduced.
2. According to the installation method of the cable guide pipe, the chiseling-free grout stop belt is installed, the construction process is optimized, manual chiseling operation in a narrow reserved pipe hole space is not needed, and the construction risk is low.
Description of the drawings:
FIG. 1 is a schematic flow diagram of a method of installing a cable guide according to the present invention;
FIG. 2 is a three-dimensional schematic view of a prepared hole pattern plate in the installation method of the cable guide according to example 1;
FIG. 3 is a schematic view of a scabbling-free grout stop tape in the installation method of the cable guide of example 1;
FIG. 4 is a front view of step S1 in the installation method of the cable guide of embodiment 1;
FIG. 5 is a side view of step S1 in the installation method of the cable guide of embodiment 1;
FIG. 6 is a plan view of step S1 in the installation method of the cable guide according to example 1;
FIG. 7 is a side view of step S4 of the installation method of the cable guide of embodiment 1;
FIG. 8 is a plan view of step S4 in the installation method of the cable guide of example 1;
FIG. 9 is a side view of the installation of a closure template in the installation method of the cable guide of example 1;
FIG. 10 is a side view of the cable guide of example 1 after installation;
the labels in the figure are: 1-cable guide pipe, 2-tower column, 21-constructed tower column segment, 22-tower column segment to be constructed, 3-preformed hole template, 31-stiffening plate, 4-preformed hole, 5-chiseling-free grout-stopping belt, 6-stiff skeleton, 7-sealing template and 8-filling concrete.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1 to 10, a method for installing a cable guide duct 1 of a tower column of a cable-stayed bridge includes the following steps:
s1, manufacturing a preformed hole template 3 according to the structural size of the cable guide pipe 1, and then wrapping a chiseling-free grout stop belt 5 on the concrete contact surface of the preformed hole template 3 and the tower column 2;
s2, mounting the preformed hole template 3 after the installation of the steel bars of the tower column section 22 to be constructed is completed, wherein the mounting angle of the preformed hole template 3 is the same as that of the cable guide pipe 1, the lower end of the preformed hole template 3 is flush with the outer side of the constructed tower column section 21, the upper end of the preformed hole template 3 is flush with the top surface of the tower column section 22 to be constructed, and the preformed hole template 3 is fixed by using the stiff framework 6;
s3, constructing concrete of the tower column segment 22 to be constructed, and removing the preformed hole template 3 after the concrete is initially set to form a preformed hole 4;
s4, hoisting and installing the cable guide pipe 1 in the preformed hole 4, positioning the cable guide pipe 1, fixing the cable guide pipe 1 by using a rigid framework 6 after positioning, and exposing the lower end of the cable guide pipe 1 to the outer side of the tower column 2;
s5, installing a sealing template 7, installing the sealing template 7 at the intersection of the outer side of the tower column and the cable guide pipe 1, filling a cavity between the cable guide pipe 1 and the preformed hole 4 with filling concrete 8, and marking the filling concrete 8 and the concrete of the tower column 2 by the same mark.
Before the preformed hole template 3 is installed, the contact surface of the preformed hole template 3 and the concrete of the tower column is wrapped with the scabbling-free grout stopping belt 5, and after the preformed hole template 3 is removed, the scabbling-free grout stopping belt 5 is attached to the concrete surface in the hole, so that scabbling of the concrete surface in a narrow space is avoided. And after the steel bars of the tower column section 22 to be constructed are installed, installing the preformed hole template 3, measuring, lofting and positioning, wherein the installation angle of the preformed hole template 3 is the same as the design angle of the cable guide pipe 1 installed in the tower column section 2. Installing the inner and outer concrete formworks of the tower 2 columns after the concrete is installed in place, firstly installing an outer mould, then installing an inner mould, and then pouring concrete; and then the inner and outer molds of the tower column 2 are disassembled, and the preformed hole template 3 is disassembled.
In some embodiments, the inner diameter of the preformed hole template 3 is 10-30cm larger than the inner diameter of the cable guide 1. The cavity between the cable guide pipe 1 and the preformed hole 4 of the preformed hole template 3 is sufficient to facilitate the installation and the positioning of the cable guide pipe 1.
In some embodiments, the preformed hole template 3 is made of wood, the cross section of the preformed hole template 3 is square, the square preformed hole template 3 is made of wood more conveniently, and the preformed hole template 3 made of wood is convenient to disassemble. Furthermore, a plurality of stiffening plates 31 are arranged in the preformed hole template 3, the stiffening plates 31 are arranged in the preformed hole template 3 at intervals, and the strength of the preformed hole template 3 is enhanced by the arrangement of the stiffening plates 31.
In some embodiments, the preformed hole template 3 is made of a plastic plate, the cross section of the preformed hole template 3 is circular or square, more specifically, the preformed hole template 3 is made of a PVC pipe, and the cross section of the preformed hole template 3 is circular.
In some embodiments, the filler concrete 8 filling the space between the cable guide 1 and the prepared hole 4 is self-compacting micro-expansive concrete. After the cable guide pipe 1 is positioned, the cable guide pipe is fixed by using a fixing jig frame in a rigid framework 6, a cavity between the cable guide pipe 1 and a reserved hole 4 is filled with filling concrete 8, and in the filling process, if the maximum hole depth exceeds two meters, the filling concrete 8 is deeply filled into the bottom of the cavity by using a pipeline; if the maximum hole depth does not exceed two meters, the top of the cavity is filled along the inner wall of the preformed hole 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A method for installing a cable guide pipe of a tower column of a cable-stayed bridge is characterized by comprising the following steps:
s1, manufacturing a preformed hole template (3) according to the structural size of the cable guide pipe (1), and then wrapping a chiseling-free grout stop belt (5) on the concrete contact surface of the preformed hole template (3) and the tower column (2);
s2, after the installation of the steel bars of the tower column section (22) to be constructed is completed, installing the preformed hole template (3), wherein the installation angle of the preformed hole template (3) is the same as that of the cable guide pipe (1), the lower end of the preformed hole template (3) is flush with the outer side of the constructed tower column section (21), the upper end of the preformed hole template (3) is flush with the top surface of the tower column section (22) to be constructed, and the preformed hole template (3) is fixed by using a stiff framework (6);
s3, constructing concrete of the tower column segment (22) to be constructed, and removing the preformed hole template (3) after the concrete is initially set to form a preformed hole (4);
s4, hoisting and installing the cable guide pipe (1) in the preformed hole (4), positioning the cable guide pipe (1), fixing the cable guide pipe (1) by using a rigid framework (6) after positioning, and exposing the lower end of the cable guide pipe (1) to the outer side of the constructed tower column section (21);
s5, installing a sealing template (7), wherein the sealing template (7) is installed at the intersection of the outer side of the constructed tower column segment (21) and the cable guide pipe (1), filling a cavity between the cable guide pipe (1) and the reserved hole (4) with filling concrete (8), and the filling concrete (8) and the concrete of the tower column (2) are labeled by the same number.
2. The method for installing a cable-stayed bridge tower column cable guide pipe according to claim 1, wherein the inner diameter of the prepared hole template (3) is 10-30cm larger than the inner diameter of the cable guide pipe (1).
3. The method for installing the cable-stayed bridge tower column cable guide pipe according to claim 1, wherein the preformed hole template (3) is made of wood boards, and the cross section of the preformed hole template (3) is square.
4. The method for installing the cable-stayed bridge tower column cable guide pipe according to claim 3, wherein a plurality of stiffening plates (31) are arranged in the reserved hole template (3), and the stiffening plates (31) are uniformly arranged in the reserved hole template (3) at intervals.
5. The method for installing the cable-stayed bridge tower column cable guide pipe according to claim 1, wherein the preformed hole template (3) is made of a plastic plate, and the cross section of the preformed hole template (3) is circular or square.
6. The method for installing the cable-stayed bridge tower column cable guide pipe according to claim 5, wherein the preformed hole template (3) is made of a PVC pipe, and the cross section of the preformed hole template (3) is circular.
7. The method for installing a cable-stayed bridge tower column cable guide according to any one of claims 1 to 6, characterized in that the filling concrete (8) filling the cavity between the cable guide (1) and the prepared hole (4) is self-compacting micro-expansive concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111424166.2A CN114016405A (en) | 2021-11-26 | 2021-11-26 | Method for installing pylon cable guide pipe of cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111424166.2A CN114016405A (en) | 2021-11-26 | 2021-11-26 | Method for installing pylon cable guide pipe of cable-stayed bridge |
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| Publication Number | Publication Date |
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| CN114016405A true CN114016405A (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111424166.2A Pending CN114016405A (en) | 2021-11-26 | 2021-11-26 | Method for installing pylon cable guide pipe of cable-stayed bridge |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003138517A (en) * | 2001-11-02 | 2003-05-14 | Anderson Technology Kk | Structure of girder part formed by split construction of prestressed concrete multiple span continuous girder structure, and method of constructing the structure |
| JP2007051432A (en) * | 2005-08-16 | 2007-03-01 | Sumitomo Mitsui Construction Co Ltd | Fixed structure of diagonal tensile cable |
| CN101736698A (en) * | 2009-12-15 | 2010-06-16 | 中交路桥华北工程有限公司 | Accurate positioning method for cable-stayed bridge pylon cable guide pipe |
| CN103015318A (en) * | 2012-11-19 | 2013-04-03 | 中铁大桥勘测设计院集团有限公司 | Inner sleeve-type inclined guy cable main tower cable guide pipe and construction method thereof |
| CN103194972A (en) * | 2013-04-02 | 2013-07-10 | 中铁大桥局股份有限公司 | Construction method for cable-stayed bridge cable guiding pipe with pipe opening extending out of tower wall |
| CN105113411A (en) * | 2015-08-03 | 2015-12-02 | 中铁港航局集团有限公司 | Method for mounting and rapidly and accurately positioning main tower cable guide pipe of cable-stayed bridge |
| CN109695252A (en) * | 2018-12-12 | 2019-04-30 | 上海巴安水务股份有限公司 | A kind of Equipment Foundations hole to be provided work progress method of quality control |
| CN111941637A (en) * | 2020-08-25 | 2020-11-17 | 中交第四航务工程局有限公司 | Sectional prefabricating method for immersed tube joint |
| CN212452311U (en) * | 2020-06-04 | 2021-02-02 | 中铁二十三局集团第三工程有限公司 | Installation device of stay cable guide pipe |
-
2021
- 2021-11-26 CN CN202111424166.2A patent/CN114016405A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003138517A (en) * | 2001-11-02 | 2003-05-14 | Anderson Technology Kk | Structure of girder part formed by split construction of prestressed concrete multiple span continuous girder structure, and method of constructing the structure |
| JP2007051432A (en) * | 2005-08-16 | 2007-03-01 | Sumitomo Mitsui Construction Co Ltd | Fixed structure of diagonal tensile cable |
| CN101736698A (en) * | 2009-12-15 | 2010-06-16 | 中交路桥华北工程有限公司 | Accurate positioning method for cable-stayed bridge pylon cable guide pipe |
| CN103015318A (en) * | 2012-11-19 | 2013-04-03 | 中铁大桥勘测设计院集团有限公司 | Inner sleeve-type inclined guy cable main tower cable guide pipe and construction method thereof |
| CN103194972A (en) * | 2013-04-02 | 2013-07-10 | 中铁大桥局股份有限公司 | Construction method for cable-stayed bridge cable guiding pipe with pipe opening extending out of tower wall |
| CN105113411A (en) * | 2015-08-03 | 2015-12-02 | 中铁港航局集团有限公司 | Method for mounting and rapidly and accurately positioning main tower cable guide pipe of cable-stayed bridge |
| CN109695252A (en) * | 2018-12-12 | 2019-04-30 | 上海巴安水务股份有限公司 | A kind of Equipment Foundations hole to be provided work progress method of quality control |
| CN212452311U (en) * | 2020-06-04 | 2021-02-02 | 中铁二十三局集团第三工程有限公司 | Installation device of stay cable guide pipe |
| CN111941637A (en) * | 2020-08-25 | 2020-11-17 | 中交第四航务工程局有限公司 | Sectional prefabricating method for immersed tube joint |
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