CN113602155A - Contact net hardware fitting installation and pillar assembling synchronous construction method - Google Patents
Contact net hardware fitting installation and pillar assembling synchronous construction method Download PDFInfo
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- CN113602155A CN113602155A CN202110746571.XA CN202110746571A CN113602155A CN 113602155 A CN113602155 A CN 113602155A CN 202110746571 A CN202110746571 A CN 202110746571A CN 113602155 A CN113602155 A CN 113602155A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/28—Manufacturing or repairing trolley lines
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Abstract
The invention belongs to the technical field of railway contact network construction, and particularly relates to a synchronous construction method for installation of contact network hardware and erection of a strut, which comprises the following steps: s1, construction preparation; s2, compiling a support column assembly construction table and a hardware fitting installation construction table; compiling technical mating and process mating according to design requirements, and ensuring that construction technicians master the mating; s3, carrying out foundation pit excavation and foundation pouring construction; s4, measuring parameters; s5, putting the support column upside down, and cushioning one end of the support column through the supporting structure (11) to mount hardware fittings; s6, assembling and correcting the support column according to the construction table of the support column assembly, carefully checking the direction of the compression surface of the concrete support column, and adjusting the slope of the support column according to the stress direction; and S7, detecting and rechecking. The overhead working capacity of the overhead contact system hardware fitting installation is greatly reduced. The invention has the advantages of simple implementation, small potential safety hazard, high practicability and obvious economic effect.
Description
Technical Field
The invention belongs to the technical field of railway contact net construction, and particularly relates to a synchronous construction method for installation of contact net hardware and erection of a strut.
Background
Railway contact net construction mainly takes high altitude construction as the main, at high altitude construction in-process, needs to take effective measure, reduces the potential safety hazard, reduces the construction degree of difficulty, improves the efficiency of construction. At present, the construction process of the contact net is to complete the support column erection firstly and then carry out high-altitude hardware fitting installation. After the support is adjusted, measurement is firstly carried out to determine the hardware installation height and size, then overhead hardware installation operation is carried out, but the overhead operation efficiency is low, the potential safety hazard is large, and at present, the efficiency is improved and the potential safety hazard is reduced mainly by wearing safety helmets and safety belts or adopting special professional tools and equipment.
Disclosure of Invention
The invention aims to provide a construction method for synchronously installing contact net hardware and assembling and constructing a support column, which finishes part of overhead work content on the ground, thereby reducing the occurrence of overhead falling accidents and simultaneously improving the construction efficiency and the process quality.
In order to achieve the purpose, the invention adopts the technical scheme that: a synchronous construction method for installation of contact network hardware and erection of a strut comprises the following steps:
s1, familiarizing drawings and design requirements, and preparing installation materials;
s2, compiling a support column assembly construction table and a hardware fitting installation construction table; compiling technical mating and process mating according to design requirements, and ensuring that construction technicians master the mating;
s3, carrying out foundation pit excavation and foundation pouring construction, placing the bottom plate after the concrete strut foundation pit excavation is finished, and pouring the foundation after the steel column foundation or cup foundation pit excavation is finished;
s4, measuring the upper surface elevation of the concrete strut foundation pit base plate, the surface elevation of the steel column foundation and the bottom elevation of the cup foundation pit, comparing the measured upper surface elevation with the designed rail surface elevation, and determining the position of the rail surface elevation on the strut or the steel column, thereby determining the installation position of the hardware fitting with the installation height according to the rail surface elevation;
s5, the support is laid down and one end of the support is lifted up through the support structure, the fitting installation position is determined according to a fitting installation construction table, then fitting installation is carried out according to the technical bottom crossing and process bottom crossing requirements, the contact net fitting is ensured to be fastened in place according to the design torque, the fitting installation direction is uniform, and the installation process is uniform;
s6, after the hardware fitting is installed, assembling and correcting the support column according to the support column assembling construction table, carefully checking the direction of the compression surface of the concrete support column, and adjusting the slope of the support column according to the stress direction;
s7, detection and rechecking: and rechecking and checking the compression surface, the slope of the concrete support and the red line position of the rail surface, and simultaneously checking whether the installation of each support and the hardware fitting is consistent with a construction table and whether the installation process is consistent with the design, if the red line position error of the rail surface is greater than 100mm, adjusting the hardware fitting.
In step S4, the calculation formulas of the distance h between the rail surface elevation and the column bottom and the distance h' between the rail surface elevation and the steel column bottom are:
h＝h1+h2；
h’＝Hg-Hj；
wherein h1 represents the height difference between the pit bottom and the ground elevation, h2 represents the height difference between the ground elevation and the rail surface design elevation, Hg represents the rail surface design elevation, and Hj represents the foundation surface elevation.
The hardware fitting comprises a lower wrist arm base, a wrist arm insulator, a wire anchor angle steel, a jumper shoulder frame, an upper wrist arm base, an anchor bearing angle steel, an additional lead shoulder frame, an additional lead lower anchor angle steel and a large limit frame.
The elevation parameter in the step S3 is measured by an RTK measuring instrument.
The support structure is a square timber, and the size of the square timber is adjusted according to the size and the installation position of the installed hardware fitting.
Compared with the prior construction method, the invention has the following beneficial effects: the invention provides a synchronous construction method for installation of contact net hardware and erection of a support column, various hardware, such as additional lead shoulder frames, cantilever bases, rod-type composite insulators, large-limit frames, lower anchor angle steel, jumper shoulder frames, soft crossing fixed angle steel and other contact net hardware can be installed on the ground, and the construction method is compared with the traditional construction method according to the field construction completion amount and personnel investment statistics:
1. hardware fitting installation is carried out in traditional overhead operation, and the hardware fitting installation of each support column needs 0.4 overhead workers and 0.2 ground workers;
2. by adopting the construction technology, the hardware fitting installation is carried out before the support column assembly, and only 0.056 overhead personnel and 0.22 ground personnel are needed for completing the installation of each support column hardware fitting;
by comparison it can be seen that: the total use amount of personnel can be saved by about 50%, the labor cost can be saved by about 64% by considering the labor cost difference of high-altitude personnel and low-altitude personnel, the economic effect and the construction efficiency are obviously improved, high-altitude operation is basically not needed, and the safety risk is greatly reduced. Therefore, the construction method greatly reduces the workload of high-altitude operation, thereby improving the construction efficiency, reducing safe construction such as high-altitude falling and the like.
Drawings
Fig. 1 is a process flow diagram of a method for installing an overhead contact system hardware and constructing a strut assembly synchronously according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the measurement of concrete pillar parameters according to an embodiment of the present invention;
FIG. 3 is a schematic view of the measurement of parameters of steel columns in the embodiment of the present invention;
FIG. 4 is a schematic view of the placement of the support posts according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating installation of an overhead contact system hardware on the ground in the embodiment of the present invention;
FIG. 6 is a front view of the pillar and the contact net hardware fitting installed synchronously in the embodiment of the present invention;
fig. 7 is a front side view of a pillar and a catenary hardware fitting in synchronization in an embodiment of the present invention;
in the figure: 1-a pillar; 2-red line of the rail surface; 3-the bottom of the foundation pit; 4-a lower wrist-arm base; 5-cantilever rod insulator; 6-line anchor angle steel; 7-jumper shoulder frames; 8-upper base of wrist arm; 9-anchor bearing angle steel; 10-additional lead shoulder frame, 11-supporting structure, 12 foundation pit, 13 foundation pit bottom, 14-steel column and 15-foundation bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; 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 invention.
As shown in fig. 1, an embodiment of the present invention provides a method for installing an overhead line system hardware and constructing a strut assembly synchronously, including the following steps:
s1, familiarizing drawings and design requirements, and preparing installation materials.
Before construction, preparation work needs to be done, design drawings and requirements need to be familiar at first, design intentions are convenient to know accurately, whether construction and material equipment have special requirements or not is judged by the project, technical background of the transaction, construction schemes and material planning are accurately carried out, and due to the fact that hardware fitting installation and pillar assembly synchronous construction are required to be achieved, contact net pillars and hardware fitting materials need to arrive at goods synchronously, and the situation that synchronous construction cannot be achieved due to the fact that the materials do not arrive at the goods simultaneously is avoided. The production period of the material is long, so the planning of the material and the procurement of the material tender need to be carried out as early as possible.
S2, compiling a support column assembly construction table and a hardware fitting installation construction table; and then technical mating and process mating are compiled according to design requirements, so that construction technicians can master the mating.
In order to ensure the accuracy of the pillar assembly and the hardware fitting installation and avoid the error of the hardware fitting installation and the pillar assembly, a pillar assembly and hardware fitting installation construction table is accurately compiled before construction, so that constructors can be guided to take and install materials conveniently. The construction of the assembled struts is shown in Table 1.
TABLE 1 construction table for assembling contact net and support
The hardware fitting installation and construction table is shown in table 2, the contact net hardware fitting suitable for installation of the invention mainly comprises a cantilever base, a composite rod type insulator for a cantilever, an additional lead shoulder frame, a jumper shoulder frame, a soft crossing fixing angle steel, a lead bearing lower anchor angle steel, a compensation device, a large limiting frame, an additional lead lower anchor angle steel and the like, and part of hardware fitting equipment which is not easy to fix after the hardware fitting is installed or influences the assembly construction of a support post is required to be carried out after the support post is assembled, such as the assembly of the cantilever, the soft crossing, an isolating switch, a lightning arrester and the like.
TABLE 2 contact net hardware fitting installation and construction table
After the construction of the support assembly construction table and the hardware fitting installation construction table is finished, technical bottom crossing construction is carried out according to design requirements before construction, meanwhile, the construction process is carried out, and then the technical bottom crossing is carried out step by step, so that all constructors and technicians can be ensured to post after bottom crossing, and therefore, after construction according to the construction method, not only can the construction quality be improved, and the phenomenon of high-altitude reworking in the later period is avoided, but also the construction process is greatly improved.
S3, excavation of the foundation pit and pouring of the foundation: and (4) carrying out foundation pit excavation and foundation pouring construction, placing the bottom plate after the concrete strut foundation pit excavation is finished, and pouring the foundation after the steel column foundation or cup foundation pit excavation is finished.
Specifically, the technology is finished at the bottom of the building, after construction conditions are met on the site, foundation pit excavation and foundation pouring can be unfolded, construction is finished before track construction as much as possible, later-stage conflict with track construction is avoided, and construction efficiency is reduced. After the foundation pit of the concrete strut is excavated, the bottom plate is placed. After the foundation pit of the steel column foundation or the cup foundation is excavated, the foundation can be poured, the foundation surface is smooth, and later-period parameter measurement and pillar assembly are facilitated.
S4, parameter measurement and calculation: and measuring the upper surface elevation of the concrete pillar foundation pit base plate, the surface elevation of the steel column foundation and the bottom elevation of the cup foundation pit, comparing the measured upper surface elevation with the designed rail surface elevation, and determining the position of the rail surface elevation on the pillar or the steel column so as to determine the installation position of the hardware fitting with the installation height according to the rail surface elevation.
The schematic diagram of the parameter measurement of the concrete pillar foundation pit or the cup foundation pit is shown in fig. 2, and the foundation pit 12 in the diagram can be the concrete pillar foundation pit or the cup foundation pit. The ground elevation H is measured by an RTK measuring instrument, then the height difference H1 between the pit bottom and the ground elevation H is measured by a tape measure, the height difference between the ground elevation H and the designed height Hg of the rail surface is H2, then the distance between the position (the red line of the rail surface) of the height of the rail surface and the bottom of the support is H1+ H2, the red line mark of the rail surface can be made on the support according to the size, and the later-stage hardware fitting installation height can be conveniently measured.
The schematic diagram of the measurement of the basic parameters of the steel column is shown in fig. 3, the elevation of the basic surface of the steel column is measured by an RTK measuring instrument, the distance between the elevation position (red line of the rail surface) of the rail surface and the bottom of the steel column is h' ═ Hg-Hj, the red line marking of the rail surface can be done on the support column according to the dimension, and the hardware fitting installation height can be conveniently measured in the later period. When the H-shaped steel column is assembled, the thickness of a bolt needs to be adjusted by considering the bottom of the H-shaped steel column, and the red line error of the rail surface is reduced as much as possible.
Specifically, the calculation formula of the distance h between the rail surface elevation and the bottom of the support column and the distance h' between the rail surface elevation and the bottom of the steel column is as follows:
h＝h1+h2；(1)
h’＝Hg-Hj；(2)
wherein h1 represents the height difference between the pit bottom and the ground elevation, h2 represents the height difference between the ground elevation and the rail surface design elevation, Hg represents the rail surface design elevation, and Hj represents the foundation surface elevation.
After the data measurement is finished, arrangement and recording are well carried out, and a parameter recording table is shown in table 3.
Table 3: parameter measuring meter
S5, hardware fitting: confirm the gold utensil mounted position, then put the pillar down and put to fill up pillar one end through bearing structure 11, confirm the gold utensil mounted position according to gold utensil installation construction table, then carry out the gold utensil installation according to the requirement of technical transaction end and technology transaction end, ensure that the contact net gold utensil fastens according to design moment and targets in place, the gold utensil direction of installation is unified, and the installation technology is unified.
After the pillar is transported to the scene, put the pillar according to gold utensil mounted position and direction to adopt bearing structure 11 with the pillar to fill up it, the installation of bolt and back angle steel when the gold utensil of being convenient for is installed, the schematic diagram is put to the pillar is shown in figure 4, and bearing structure's position and size should be according to the nimble adjustment of gold utensil size and mounted position, and when two cantilever bases were installed, the space in pillar lower part should satisfy two cantilever sizes. In particular, in this embodiment, the support structure may be a square timber.
After the red line position of the rail surface of the support column is determined according to the table 3, the position and the installation direction of the corresponding hardware on the support column are determined according to the installation and construction table of the contact network hardware in the table 2. After the hardware fitting installation position and direction are determined, the hardware fitting can be installed according to the requirements of technical bottom crossing and process bottom crossing, the contact net hardware fitting is ensured to be fastened in place according to the design torque, the hardware fitting installation direction is uniform, the installation process is uniform, and the process quality is ensured.
Specifically, the hardware fitting comprises a lower wrist arm base 4, a wrist arm insulator 5, wire anchor angle steel 6, a jumper shoulder frame 7, an upper wrist arm base 8, anchor bearing angle steel 9 and an additional lead shoulder frame 10. Fig. 5 is a schematic view of the metal fitting of this embodiment after the metal fitting is completed.
S6, assembling the support.
After the hardware fitting is installed, the support assembly and the correction are carried out according to the support assembly construction table, the direction of the compression surface of the concrete support is carefully checked, and the slope of the support is adjusted according to the stress direction. As shown in fig. 6 to 7, the structure of the assembled pillar is schematically illustrated.
S7, detection and rechecking: and after the support column is assembled, rechecking and checking the compression surface, the slope of the support column and the red line position of the rail surface of the concrete support column, simultaneously checking whether the installation of each support column and the hardware fitting is consistent with a construction table or not, and checking whether the installation process is consistent with the design or not, and if the red line position error of the rail surface is found to be larger than 100mm, adjusting the hardware fitting.
According to the field construction completion amount and the personnel investment statistics, the construction method of the invention is compared with the traditional construction method:
1. hardware fitting installation is carried out in traditional overhead operation, and the hardware fitting installation of each support column needs 0.4 overhead workers and 0.2 ground workers;
2. by adopting the construction technology, the hardware fitting installation is carried out before the support column assembly, and only 0.056 overhead personnel and 0.22 ground personnel are needed for completing the installation of each support column hardware fitting;
by comparison it can be seen that: the total use amount of personnel can be saved by about 50%, the labor cost can be saved by about 64% by considering the labor cost difference of high-altitude personnel and low-altitude personnel, therefore, the construction method provided by the invention has the advantages that the economic effect and the construction efficiency are obviously improved, high-altitude operation is basically not needed, and the safety risk is greatly reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A synchronous construction method for installation of contact network hardware fittings and erection of struts is characterized by comprising the following steps:
s1, familiarizing drawings and design requirements, and preparing installation materials;
s2, compiling a support column assembly construction table and a hardware fitting installation construction table; compiling technical mating and process mating according to design requirements, and ensuring that construction technicians master the mating;
s3, carrying out foundation pit excavation and foundation pouring construction, placing the bottom plate after the concrete strut foundation pit excavation is finished, and pouring the foundation after the steel column foundation or cup foundation pit excavation is finished;
s4, measuring the upper surface elevation of the concrete strut foundation pit base plate, the surface elevation of the steel column foundation and the bottom elevation of the cup foundation pit, comparing the measured upper surface elevation with the designed rail surface elevation, and determining the position of the rail surface elevation on the strut or the steel column, thereby determining the installation position of the hardware fitting with the installation height according to the rail surface elevation;
s5, the support is laid down, one end of the support is lifted through the supporting structure (11), and hardware fitting installation is carried out according to the hardware fitting installation position and direction and the technical bottom crossing and process bottom crossing requirements, so that the contact net hardware fitting is fastened in place according to the design torque, the hardware fitting installation direction is uniform, and the installation process is uniform;
s6, after the hardware fitting is installed, assembling and correcting the support column according to the support column assembling construction table, carefully checking the direction of the compression surface of the concrete support column, and adjusting the slope of the support column according to the stress direction;
s7, detection and rechecking: and rechecking and checking the compression surface, the slope of the concrete support and the red line position of the rail surface, and simultaneously checking whether the installation of each support and the hardware fitting is consistent with a construction table and whether the installation process is consistent with the design, if the red line position error of the rail surface is greater than 100mm, adjusting the hardware fitting.
2. The method for synchronously constructing the installation of the contact net hardware and the erection of the support column according to claim 1, wherein in the step S4, the calculation formulas of the distance h between the rail surface elevation and the bottom of the support column and the distance h' between the rail surface elevation and the bottom of the steel column are as follows:
h=h1+h2；
h’=Hg-Hj；
wherein h1 represents the height difference between the pit bottom and the ground elevation, h2 represents the height difference between the ground elevation and the rail surface design elevation, Hg represents the rail surface design elevation, and Hj represents the foundation surface elevation.
3. The contact net hardware installation and support column assembly synchronous construction method according to claim 1, characterized in that the hardware comprises a wrist arm lower base (4), a wrist arm insulator (5), a wire anchor angle steel (6), a jumper shoulder frame (7), a wrist arm upper base (8), an anchor angle steel (9) and an additional wire shoulder frame (10).
4. The method for synchronously constructing the installation of the overhead contact system hardware and the erection of the support column according to claim 1, wherein the elevation parameter in the step S3 is measured by an RTK measuring instrument.
5. The synchronous construction method for installation of contact net hardware and erection of the support column according to claim 1, wherein the support structure (11) is a square timber, and the size of the square timber is adjusted according to the size and the installation position of the installed hardware.
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| CN2644218Y (en) * | 2003-07-16 | 2004-09-29 | 石家庄同力铁路供电设备技术有限公司 | Combined type overhead contact line equipment pillar for electrified railroad |
| CN101327748A (en) * | 2008-06-18 | 2008-12-24 | 中铁十一局集团电务工程有限公司 | Method for calculating and installing high-speed rail electrification catenary wrist-arm |
| CN105275251A (en) * | 2014-12-30 | 2016-01-27 | 中国铁建电气化局集团第五工程有限公司 | Railway existing line overhead line system hard crossbeam erection method |
| CN107084835A (en) * | 2017-05-04 | 2017-08-22 | 中铁十二局集团有限公司 | A kind of bracket pre-configuration data detection means and its detection method |
| WO2018086602A1 (en) * | 2016-11-11 | 2018-05-17 | 成都国佳电气工程有限公司 | Insulated and composite overhead-contact-system supporting apparatus |
-
2021
- 2021-07-01 CN CN202110746571.XA patent/CN113602155B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2644218Y (en) * | 2003-07-16 | 2004-09-29 | 石家庄同力铁路供电设备技术有限公司 | Combined type overhead contact line equipment pillar for electrified railroad |
| CN101327748A (en) * | 2008-06-18 | 2008-12-24 | 中铁十一局集团电务工程有限公司 | Method for calculating and installing high-speed rail electrification catenary wrist-arm |
| CN105275251A (en) * | 2014-12-30 | 2016-01-27 | 中国铁建电气化局集团第五工程有限公司 | Railway existing line overhead line system hard crossbeam erection method |
| WO2018086602A1 (en) * | 2016-11-11 | 2018-05-17 | 成都国佳电气工程有限公司 | Insulated and composite overhead-contact-system supporting apparatus |
| CN107084835A (en) * | 2017-05-04 | 2017-08-22 | 中铁十二局集团有限公司 | A kind of bracket pre-configuration data detection means and its detection method |
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