CN110556744A - novel installation and laying method of rail transit mineral cable - Google Patents

novel installation and laying method of rail transit mineral cable Download PDF

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Publication number
CN110556744A
CN110556744A CN201910861718.2A CN201910861718A CN110556744A CN 110556744 A CN110556744 A CN 110556744A CN 201910861718 A CN201910861718 A CN 201910861718A CN 110556744 A CN110556744 A CN 110556744A
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CN
China
Prior art keywords
transverse arm
mineral cable
transverse
piece
axis
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Application number
CN201910861718.2A
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Chinese (zh)
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CN110556744B (en
Inventor
徐庆
王佳毅
邓烨之
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江苏航天大为科技股份有限公司
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Priority to CN201910861718.2A priority Critical patent/CN110556744B/en
Publication of CN110556744A publication Critical patent/CN110556744A/en
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Publication of CN110556744B publication Critical patent/CN110556744B/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines in or on buildings, equivalent structures or vehicles
    • H02G3/02Details

Abstract

the invention relates to a method for installing and laying a novel rail transit mineral cable, wherein when the cable is laid, a transverse arm beam is arranged to support and fix the mineral cable, and the transverse arm beam and a corresponding interval are arranged according to specific requirements; therefore, the installation convenience is improved, meanwhile, the suspension fixing frame is arranged, the stability and the safety are improved, and the overall deflection resistance and the shear resistance are improved through the specific parameter setting of the transverse arm beam and the bolt; the novel installation and laying method of the rail transit mineral cable has the advantages of complete technical scheme, ingenious structure and convenience in implementation.

Description

Novel installation and laying method of rail transit mineral cable

Technical Field

The invention relates to the technical field of mineral cables, in particular to a novel installation and laying method of a track traffic mineral cable.

Background

With the continuous development of rail transit construction in China, the power cable is used as a cable for transmitting and distributing electric energy, and plays an important role in linking in rail transit construction.

mineral cable among the track traffic is in the dark environment for a long time, suffers biological damages such as mouse easily, needs artifical installation among the cable installation, lacks dedicated mount, and the installation effectiveness is lower, simultaneously because do not have direction and limit function, leads to easily taking place the winding when mineral cable lays, has seriously influenced the efficiency of construction.

Therefore, designing a method for installing and laying a mineral cable for rail transit becomes a problem which needs to be solved urgently at present.

Disclosure of Invention

the invention aims to solve the defects of the prior art and designs an installation and laying method for a mineral cable for rail transit.

The technical scheme of the invention is as follows: a novel installation and laying method of a rail transit mineral cable comprises the following steps:

S1: firstly, arranging two upright posts 4 in a mineral cable channel 2, and enabling the upright posts 4 to be in contact with the inner wall of the channel 2 and fixed together;

S2: a plurality of transverse arm beams 3 are arranged on the vertical upright posts 4;

s3: the mineral cable 1 is laid on the transverse arm beam 3 in the mineral cable channel 2 in a horizontal snake shape; the transverse arm beam 3 satisfies the formula:

the transverse arm beam 3 comprises a transverse arm beam 3, F x, F y, gamma x, gamma y, W x, W y, P1, V y, S x, I x, P2 and P2, wherein the transverse arm beam 3 is acted on flexural moments around a transverse axis and a longitudinal axis, the transverse axis is parallel to a coordinate axis of the transverse arm beam 3, the longitudinal axis is perpendicular to the coordinate axis of the transverse arm beam 3, the gamma x and the gamma y are plastic development coefficients around the transverse axis and the longitudinal axis, the W x and the W y are section coefficients around the transverse axis and the longitudinal axis, the P1 is a design value of the flexural moment of the transverse arm beam 3, the V y is a shearing force acted on the transverse arm beam 3 around the longitudinal axis, the S x is a static moment of a lower section on the transverse axis at;

The bolt 5 needs to satisfy the following formula:

Wherein N v is the shearing force borne by the bolt, N is the number of the bolts connected with the transverse arm beam 3, d is the diameter of the bolt, P3 is the design value of the shearing strength of the bolt, N t is the tensile force borne by the bolt, and alpha and beta are the preset coefficients of the shearing force and the tensile force;

The spacing of the transverse arm beams 3 needs to satisfy the formula:

2R+h≤H (5)

wherein R is the diameter of the mineral cable, and h is a preset height, preferably 50 mm; h is a designed value of the interval of the lateral arm beam 3.

s4: a suspension fixing frame is arranged between two transverse arm beams 3 in the length direction of the mineral cable channel 2; the suspension fixing frame comprises a hoop 10, a bottom connecting piece 9, a vertical suspension piece 7, an oblique suspension piece 8 and an end connecting piece 6; the anchor ear 10 is used for further fixing and supporting the mineral cable 1, a threaded hole is arranged on the bottom connecting piece 9, and the vertical hanging piece 7 and the inclined hanging piece 8 penetrate through the threaded hole and are fixed by nuts and are fixed on the channel 2 through the end connecting piece 6.

the vertical upright posts 4 are fixed on the inner wall of the channel 2 in an embedded part mode, or are fixed on the inner wall of the channel 2 by metal anchor bolts.

the transverse arm beam 3 is made of channel steel or angle steel and is connected to the vertical upright post 4 through welding or bolts.

the invention has the beneficial effects that:

(1) The novel installation and laying method of the rail transit mineral cable has the advantages of complete technical scheme, ingenious structure and convenience in implementation.

(2) the invention is provided with the transverse arm beam for supporting and fixing the mineral cable, and is further provided with the suspension fixing frame, and the transverse arm beam and the suspension fixing frame are combined, so that the stability and the safety are improved.

(3) the invention researches the specific parameter setting of the transverse arm beam and the bolt, and meets the requirements of integral deflection resistance and shear resistance.

(4) the invention researches the specific spacing distance of the transverse arm beams and inhibits electromagnetic interference.

Drawings

the invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the installation and laying structure of the mineral cable of the invention.

Fig. 2 is a schematic structural view of the suspension fixing frame of the invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

Referring to FIGS. 1-2:

A novel installation and laying method of a rail transit mineral cable comprises the following steps:

s1: firstly, two upright posts 4 are arranged in the mineral cable channel 2, so that the upright posts 4 are contacted with the inner wall of the channel 2 and fixed together. The vertical upright post 4 can adopt an embedded part form, and the end part of the vertical upright post is embedded in the mineral cable channel 2; or the mineral cable channel 2 is firstly made, and the vertical upright post 4 is fixed on the inner wall of the mineral cable channel 2 by adopting a metal anchor bolt.

S2: a plurality of transverse arm beams 3 are arranged on the vertical upright post 4, the transverse arm beams 3 can be welded or bolted on the vertical upright post 4 in the form of channel steel, angle steel and the like, and sometimes additional support can be provided according to the stress; the transverse arm beam 3 and the vertical upright post 4 can be connected by a bolt 5, and the up-down position of the transverse arm beam 3 can be adjusted by the bolt connection; the transverse arm beam 3 can be directly buckled into a preset groove of the vertical upright post 4, so that the bolt cost is saved.

S3: the mineral cable 1 is laid in a horizontal serpentine shape on a transverse arm beam 3 within a mineral cable channel 2. Each transverse arm beam 3 can be used for laying a single or a plurality of mineral cables 1, and proper appliances are adopted for limiting and fixing (such as a three-phase hoop, a single-phase hoop, a nylon rope and the like) so as to restrain and keep the laying of the cables, so that the stability and the safety are improved.

in order to meet the requirements of cost and performance, parameters of the transverse arm beam 3 and the bolt 5 need to be set, and the transverse arm beam 3 and the bolt 5 are guaranteed to meet the requirements of deflection resistance and shear resistance.

the transverse arm beam 3 needs to satisfy the following formula:

The transverse arm beam 3 comprises a transverse arm beam 3, F x, F y, gamma x, gamma y, W x, W y, P1, V y, S x, I x, P2 and P2, wherein the transverse arm beam 3 is acted on flexural moments around a transverse axis and a longitudinal axis, the transverse axis is parallel to a coordinate axis of the transverse arm beam 3, the longitudinal axis is perpendicular to the coordinate axis of the transverse arm beam 3, the gamma x and the gamma y are plastic development coefficients around the transverse axis and the longitudinal axis, the W x and the W y are section coefficients around the transverse axis and the longitudinal axis, the P1 is a design value of the flexural moment of the transverse arm beam 3, the V y is a shearing force acted on the transverse arm beam 3 around the longitudinal axis, the S x is a static moment of a lower section on the transverse axis at;

The bolt 5 needs to satisfy the following formula:

Wherein N v is the shearing force borne by the bolt, N is the number of the bolts connected with the transverse arm beam 3, d is the diameter of the bolt, P3 is the design value of the shearing strength of the bolt, N t is the tensile force borne by the bolt, and alpha and beta are the preset coefficients of the shearing force and the tensile force;

In order to prevent electromagnetic interference between the upper and lower layers of transverse arm beams 3, the interval between the transverse arm beams 3 needs to be set to satisfy the formula:

2R+h≤H (5)

Wherein R is the diameter of the mineral cable, and h is a preset height, preferably 50 mm; h is a designed value of the interval of the lateral arm beam 3.

s4: owing to receive dead weight and external factor influence, mineral cable can take place displacement and landing, for further stability and security improve, sets up between two horizontal arm roof beams 3 on the passageway 2 longitudinal direction and hangs the mount. The suspension holder comprises a hoop 10, a bottom connector 9, a vertical suspension member 7, an oblique suspension member 8 and an end connector 6. The anchor ear 10 is used for further fixing and supporting the mineral cable 1, a threaded hole is arranged on the bottom connecting piece 9, and the vertical hanging piece 7 and the inclined hanging piece 8 penetrate through the threaded hole and are fixed by nuts and are fixed on the channel 2 through the end connecting piece 6.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (3)

1. The method for installing and laying the novel rail transit mineral cable is characterized by comprising the following steps of:
S1: firstly, arranging two upright posts 4 in a mineral cable channel 2, and enabling the upright posts 4 to be in contact with the inner wall of the mineral cable channel 2 and fixed together;
S2: a plurality of transverse arm beams 3 are fixedly arranged on the vertical upright post 4;
S3: the mineral cable 1 is laid on the transverse arm beam 3 in the mineral cable channel 2 in a horizontal snake shape; the transverse arm beam 3 satisfies the formula:
The transverse arm beam 3 comprises a transverse arm beam 3, F x, F y, gamma x, gamma y, W x, W y, P1, V y, S x, I x, P2 and P2, wherein the transverse arm beam 3 is acted on flexural moments around a transverse axis and a longitudinal axis, the transverse axis is parallel to a coordinate axis of the transverse arm beam 3, the longitudinal axis is perpendicular to the coordinate axis of the transverse arm beam 3, the gamma x and the gamma y are plastic development coefficients around the transverse axis and the longitudinal axis, the W x and the W y are section coefficients around the transverse axis and the longitudinal axis, the P1 is a design value of the flexural moment of the transverse arm beam 3, the V y is a shearing force acted on the transverse arm beam 3 around the longitudinal axis, the S x is a static moment of a lower section on the transverse axis at;
The bolt 5 needs to satisfy the following formula:
Wherein N v is the shearing force borne by the bolt, N is the number of the bolts connected with the transverse arm beam 3, d is the diameter of the bolt, P3 is the design value of the shearing strength of the bolt, N t is the tensile force borne by the bolt, and alpha and beta are the preset coefficients of the shearing force and the tensile force;
the spacing of the transverse arm beams 3 needs to satisfy the formula:
2R+h≤H (5)
wherein R is the diameter of the mineral cable, and h is a preset height, preferably 50 mm; h is the designed interval value of the transverse arm beam 3;
S4: a suspension fixing frame is arranged between two transverse arm beams 3 in the length direction of the mineral cable channel 2; the suspension fixing frame specifically comprises a hoop 10, a bottom connecting piece 9, a vertical suspension piece 7, an oblique suspension piece 8 and an end connecting piece 6; the anchor ear 10 is used for further fixing and supporting the mineral cable 1, a threaded hole is arranged on the bottom connecting piece 9, the vertical hanging piece 7 and the oblique hanging piece 8 penetrate through the threaded hole, are fixed by a nut and are fixed on the inner wall of the channel 2 through the end connecting piece 6.
2. The method of claim 1, wherein: the vertical upright posts 4 are fixed on the inner wall of the mineral cable channel 2 in an embedded part mode, or are fixed on the inner wall of the mineral cable channel 2 by metal anchor bolts.
3. the method of claim 1, wherein: the transverse arm beam 3 is made of channel steel or angle steel and is connected to the vertical upright post 4 through welding or bolts.
CN201910861718.2A 2019-09-12 2019-09-12 Novel installation and laying method of rail transit mineral cable CN110556744B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910861718.2A CN110556744B (en) 2019-09-12 2019-09-12 Novel installation and laying method of rail transit mineral cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910861718.2A CN110556744B (en) 2019-09-12 2019-09-12 Novel installation and laying method of rail transit mineral cable

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CN110556744A true CN110556744A (en) 2019-12-10
CN110556744B CN110556744B (en) 2020-07-14

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101538896A (en) * 2009-04-03 2009-09-23 标力建设集团有限公司 Construction method for jettied structure at high attitude of high-rise building
CN202474717U (en) * 2012-03-27 2012-10-03 中国能源建设集团安徽省电力设计院 Snakelike pavement work well for high-voltage cable
CN205654117U (en) * 2016-03-14 2016-10-19 中冶建筑研究总院有限公司 Purlin or wall beam that increase C, Z shaped steel is connected with self -tapping screw
CN205829050U (en) * 2016-07-05 2016-12-21 国网天津市电力公司 A kind of device laid for tunnel cable
CN106592948A (en) * 2016-12-19 2017-04-26 山东万鑫建设有限公司 Design and construction technology of self-stabilized section steel suspended scaffold
CN208369129U (en) * 2018-06-15 2019-01-11 塔里木大学 A kind of multiway cable adjustable support steel
CN109698482A (en) * 2018-12-14 2019-04-30 中国铁建电气化局集团第一工程有限公司 A kind of suspension type monorail traffic box beam side light cable-laying gear and method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101538896A (en) * 2009-04-03 2009-09-23 标力建设集团有限公司 Construction method for jettied structure at high attitude of high-rise building
CN202474717U (en) * 2012-03-27 2012-10-03 中国能源建设集团安徽省电力设计院 Snakelike pavement work well for high-voltage cable
CN205654117U (en) * 2016-03-14 2016-10-19 中冶建筑研究总院有限公司 Purlin or wall beam that increase C, Z shaped steel is connected with self -tapping screw
CN205829050U (en) * 2016-07-05 2016-12-21 国网天津市电力公司 A kind of device laid for tunnel cable
CN106592948A (en) * 2016-12-19 2017-04-26 山东万鑫建设有限公司 Design and construction technology of self-stabilized section steel suspended scaffold
CN208369129U (en) * 2018-06-15 2019-01-11 塔里木大学 A kind of multiway cable adjustable support steel
CN109698482A (en) * 2018-12-14 2019-04-30 中国铁建电气化局集团第一工程有限公司 A kind of suspension type monorail traffic box beam side light cable-laying gear and method

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