CN113550785A - Trackless measurement construction method for subway evacuation platform - Google Patents
Trackless measurement construction method for subway evacuation platform Download PDFInfo
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- CN113550785A CN113550785A CN202110906278.5A CN202110906278A CN113550785A CN 113550785 A CN113550785 A CN 113550785A CN 202110906278 A CN202110906278 A CN 202110906278A CN 113550785 A CN113550785 A CN 113550785A
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- 238000005259 measurement Methods 0.000 title claims abstract description 52
- 238000010276 construction Methods 0.000 title claims abstract description 51
- 238000009434 installation Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 6
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- 230000005662 electromechanics Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
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- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
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Abstract
The invention discloses a trackless measurement construction method for a subway evacuation platform, which comprises the following steps: (1) designing yard traffic piles; (2) calculating coordinates; (3) measuring and lofting; (4) sampling coordinates; (5) data arrangement; (6) ordering materials; (7) anchor bolt installation and support pedal installation. In the steps, the measurement construction is carried out through formal pile crossing of a design institute, and civil engineering control pile and line and slope adjusting data are provided; during trackless measurement, the straight line section, the vertical curve section, the curve section and the long and short chains are processed separately, so that the measurement precision is ensured, and the measurement efficiency is improved by newly defining coordinates for the straight line section; the total station is adopted for measurement, so that the measurement precision is high; carry out material ordering in advance through measured data, need not wait for the professional rail laying of rail laying to accomplish, rational configuration manpower, material resources, with the seamless alternate construction of track specialty, extremely compression time limit for a project, platform installation accomplishes the back, through height and clearance retest, satisfy the designing requirement, need not to cut the footboard, save manual work and material, guarantee personal safety.
Description
Technical Field
The invention relates to the technical field related to subway construction, in particular to a trackless measurement construction method for a subway evacuation platform.
Background
At present, subway projects are fiercely constructed. The construction period of the whole line of the subway project is generally 5 years, the construction period of the civil engineering construction in the early stage is long, the construction of the subway line runs through the urban area, so that convenience is brought to citizens to go out, the civil engineering construction in the early stage is limited by various conditions such as expropriation and removal, traffic dispersion, greening and removal, pipeline removal and removal, scheme stability and the like, so that the time consumed from the civil engineering unit to entering the station earthwork excavation is long, and the tunnel shield condition is given for backward pushing. The construction content of the subway power supply system is mainly tunnel, the station is auxiliary, the subway evacuation platform is constructed for tunnel, when the subway line is planned and constructed under general conditions, the line opening operation time node is basically unchanged, the civil engineering occupation time is long, the professional construction time of rail laying, electromechanics, power supply and the like reserved in the later period is short, and the construction of the power supply system is restricted by the rail. The traditional power supply system installation construction needs to be carried out measurement construction after track laying is finished, the construction time of the power supply system is extremely shortened, the construction time is always greatly shortened when the power supply system is started, the tunnel is constructed simultaneously and comprises other specialties such as communication, signals and electromechanics, the construction site is strong, the specialties are multiple, the cross operation is multiple, personnel are fully loaded, and the construction safety and the construction progress are not facilitated.
The evacuation platform support and the pedal of the subway power supply system are generally made of composite materials, so that the supply period is long. In order to ensure the safe operation of the train, the limit requirement is high. The evacuation platform is under multiple pressures of measurement accuracy, supply period, opening node and the like, and needs to be innovated urgently. After the track is paved in the traditional construction, a self-made measuring trolley is adopted for measuring, the precision of a curve section measuring instrument is not high, the invasion limit possibly exists in later-stage retest and the pedal needs to be cut off, or a laser measuring instrument is adopted for measuring, the laser measuring instrument is erected every 5-6 meters for measuring, the erection instrument is frequent, and the data retest is not facilitated. When robbing man-hour, installer is more likely to load in mixture with different section width footboard, leads to invading the boundary limit, and rework and robbing do one's job, cause material, artifical extravagant serious, have the risk of delaying the time limit simultaneously.
The construction of the evacuation platform is heavily measured, at present, the whole evacuation platform section is longitudinally measured by adopting a laser measuring instrument or a self-made measuring trolley (comprising a laser range finder, a level bar, a track support and the like), and under the general condition, the self-made measuring trolley is used for measuring a straight line section and the laser measuring instrument is used for measuring a curve section. The evacuation platform measurement must be carried out after the track is laid, and after the measurement is finished, the anchor bolt installation and the bracket ordering are carried out, so that the bracket supply period is long, and the later period faces to the rush work. The self-made trolley can only measure straight line segments during measurement, and the accuracy of curve segments is low. The curve section is measured by adopting a laser measuring instrument, the instrument is required to be frequently erected and is not beneficial to measuring data retest, and the clearance risk is invaded after the pedal is installed. The task of the labor-saving stage is heavy, the pedals in different sections are mixed and loaded to cause inclined limit, the field material cutting is not beneficial to safe civilized construction, and the dust generated by the glass fiber composite material cutting is not beneficial to personal safety.
Disclosure of Invention
The invention aims to provide a trackless measuring construction method for a subway evacuation platform, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a trackless measurement construction method for a subway evacuation platform, which comprises the following steps:
(1) designing yard pile handing, carrying out pile handing by a construction organization, carrying out field pile handing and simultaneously providing formal pile handing data and slope and line adjusting data;
(2) coordinate calculation, namely inputting mileage of a point to be measured in trackless measurement special calculation software, and automatically calculating and exporting the mileage corresponding to the height h of the pedal surface of the evacuation platform by the software;
(3) measuring and lofting, selecting a prism-free measuring mode, starting a laser indicating function of a total station, projecting laser at a mileage position corresponding to the tunnel wall, adjusting the total station to enable the elevation reading of the total station to be equal to the elevation h of the tread surface of the evacuation platform of the points to be measured, and marking the measured points on the tunnel wall by using a marking pen; according to the method, other points are measured and marked on the tunnel wall, and a line is bounced on the tunnel wall by an ink fountain according to the measured points, wherein the line is the elevation of the platform surface; the total station is adopted for measurement, the measurement precision is high, the station setting precision is retested through a rear view point or a track CPIII control point when the station is set, and the measurement precision is improved. During trackless measurement, the straight line section, the vertical curve section, the curve section and the long and short chains are processed separately, so that the measurement precision is guaranteed, and the measurement efficiency is improved by newly defining coordinates for the straight line section.
(4) Coordinate sampling, namely manufacturing a special hole taking die according to the evacuation platform bracket and the platform pedal to carry out platform bracket mounting anchor bolt hole distribution and anchor bolt mounting hole center coordinate sampling on the tunnel wall;
(5) data arrangement, namely calculating the length of a bracket, the installation angle of the bracket and the width of a pedal according to design requirements;
(6) ordering materials, namely ordering according to the support length and the pedal width selected by the data sorting calculation table, compiling a material acquisition table, numbering each mileage installation support and pedal in each interval, and pasting a two-dimensional code; the evacuation platform trackless measurement construction is used for ordering materials in advance through the measurement data without waiting for the completion of track laying professional track laying.
(7) Anchor bolt installation and support footboard installation, the anchor bolt installation carries out the district section card accuse with footboard standard order length, guarantees the installation of footboard, and the anchor bolt is installed and is gone on before the rail laying, and finished product protection is done after the installation is accomplished, and support and footboard installation are closely along with the rail laying progress. The trackless measurement construction of the invention reasonably configures manpower and material resources, seamlessly alternates with the rail major, extremely compresses the construction period, and after the platform is installed, the design requirement is met through height and limit retest, the pedal is not required to be cut, the manpower and the material are saved, and the personal safety is ensured.
Optionally, in the step (3), the station setting of the total station is completed according to the control piles handed over by the design institution, and the mileage error is +/-500 mm.
Optionally, in the step (5), the platform support is limited, and when the platform support is in a straight line section, the horizontal distance from the edge of the evacuation platform to the line center line is 1700 mm; when the platform is in a curve section outside the curve, the horizontal distance from the edge of the evacuation platform to the central line of the line is 1700-900 x h/1506+31593/R +15 mm; when the platform is in the curve section at the inner side of the curve, the horizontal distance from the edge of the evacuation platform to the central line of the line is
1700+900 × h/1506+29570/R +15 mm; in the formula, h is the track height and the unit mm; r is the radius of the curve in m.
Compared with the prior art, the invention has the following technical effects:
the evacuation platform adopts trackless measurement construction, can be subjected to constraint of track laying, enters a field in advance, realizes trackless measurement, anchor bolt embedding and material ordering before track laying, can be used for installing a bracket diagonal brace immediately following the track laying when the track laying starts, can be used for installing a bracket transverse brace after a track laying section is finished, can be used for installing a pedal after the track laying when the track is welded, realizes zero-gap construction with the track laying specialty, and achieves track passing, namely the platform completion. The risk of robbing workers is avoided in the process. The total station is adopted for measurement, the measurement precision and the installation quality are improved, the height and the limit of the platform are retested after the rail is passed through, the error is within the range of the design requirement, a secondary cutting support and a pedal are not needed, the labor and material waste is avoided, and meanwhile, the risk of the glass fiber powder generated by material cutting to the personal safety is avoided. The traditional measurement can only be carried out after the track is communicated, the order can be carried out in advance by adopting the trackless measurement, the supply period is compressed in the track laying construction period, and the construction period is planned and optimized to the utmost extent. The invention adopts trackless measurement construction, when trackless measurement and anchor bolt embedding, no other professional influence exists in the tunnel, and when the support is installed, the other professional can carry out measurement work, thereby avoiding cross construction influence. The trackless measurement construction is adopted, the manual work and the material arrangement are reasonable and orderly, the manpower and the material resources are saved, the construction cost is saved, and the construction period is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow chart of a subway evacuation platform trackless measurement construction method of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
The invention aims to provide a trackless measuring construction method for a subway evacuation platform, which aims to solve the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a trackless measurement construction method for a subway evacuation platform, which comprises the following steps as shown in figure 1:
(1) designing yard pile handing, carrying out pile handing by a construction organization, carrying out field pile handing and simultaneously providing formal pile handing data and slope and line adjusting data;
(2) coordinate calculation, namely inputting mileage of a point to be measured in trackless measurement special calculation software, and automatically calculating and exporting the mileage corresponding to the height h of the pedal surface of the evacuation platform by the software;
(3) measuring and lofting, selecting a prism-free measuring mode, starting a laser indicating function of a total station, projecting laser at a mileage corresponding to the tunnel wall, adjusting the total station to enable the elevation reading of the total station to be equal to the elevation h of the pedal surface of the evacuation platform of the point to be measured, marking the mileage in advance or determining the mileage according to the number of a shield ring, preferably controlling the error within +/-500 mm, and marking the measured point on the tunnel wall by using a marking pen; according to the method, other points are measured and marked on the tunnel wall, and a line is bounced on the tunnel wall by an ink fountain according to the measured points, wherein the line is the elevation of the platform surface; the total station is adopted for measurement, the measurement precision is high, the station setting precision is retested through a rear view point or a track CPIII control point when the station is set, and the measurement precision is improved. During trackless measurement, the straight line section, the vertical curve section, the curve section and the long and short chains are processed separately, so that the measurement precision is guaranteed, and the measurement efficiency is improved by newly defining coordinates for the straight line section.
The limit requirement of the platform support is that when in a straight line section, the horizontal distance from the edge of the evacuation platform to the central line of the line is 1700 mm; when the platform is in a curve section outside the curve, the horizontal distance from the edge of the evacuation platform to the central line of the line is 1700-900 x h/1506+31593/R +15 mm; when the platform is in the curve section at the inner side of the curve, the horizontal distance from the edge of the evacuation platform to the central line of the line is
1700+900 × h/1506+29570/R +15 mm; in the formula, h is the track height and the unit mm; r is the radius of the curve in m.
(4) Coordinate sampling, namely, manufacturing a special hole taking die according to an evacuation platform bracket and a platform pedal to carry out platform bracket mounting anchor hole distribution and anchor bolt mounting hole center coordinate sampling on a tunnel wall, considering segment joints of a shield interval during anchor bolt mounting hole distribution, ensuring that the distance between the edge of the joints meets the stress requirement of bolts, simultaneously detecting the distribution condition of reinforcing steel bars of shield segments by using a reinforcing steel bar detector, translating along the line direction when meeting the reinforcing steel bars, keeping the mounting interval of adjacent brackets within the design requirement range, when the die is placed, aligning the upper top surface of the die with an ink line on the tunnel wall, after the die is placed, drawing x ' at the anchor bolt mounting hole position by using a marking pen, drawing't ' at the anchor bolt mounting center hole of an upper support and a lower support, at the moment, applying laser of a total station to the position of the upper support, recording coordinates (XS001, YS001 and ZS001), applying the laser to the position of the lower support, the point coordinates (XX001, YX001, ZX001) are recorded. Sequentially measuring and recording coordinates of other supports;
(5) data arrangement, namely calculating the length of a bracket, the installation angle of the bracket and the width of a pedal according to design requirements; calculating the length of the bracket: wherein, according to the design requirements, the platform support limit requirements are shown in Table 1,
TABLE 1 platform Limit design requirements
According to design requirements, the bracket angle calculation comprises the following steps: the round tunnel evacuation platform has an installation angle shown in table 2,
TABLE 2 installation angle of evacuation platform for circular tunnel
| Serial number | Evacuation platform support Length Specification (mm) | X(mm) | Y(°) |
| 1 | 600-800 | 500 | 55° |
| 2 | 800-1000 | 600 | 46° |
| 3 | 1000-1100 | 700 | 40° |
The installation included angle of the evacuation platform of the horseshoe-shaped tunnel is shown in the table 3,
TABLE 3 installation included angle of evacuation platform of U-shaped tunnel
| Serial number | Evacuation platform support Length Specification (mm) | X(mm) | Y(°) |
| 1 | 600-800 | 500 | 48° |
| 2 | 800-1000 | 600 | 41° |
| 3 | 1000-1100 | 700 | 40° |
The rectangular tunnel evacuation platform installation included angle is shown in table 4,
TABLE 4 installation included angle of rectangular tunnel evacuation platform
(6) Ordering materials, namely ordering according to the support length and the pedal width selected by the data sorting calculation table, compiling a material acquisition table, numbering each mileage installation support and pedal in each interval, and pasting a two-dimensional code; the evacuation platform trackless measurement construction is used for ordering materials in advance through the measurement data without waiting for the completion of track laying professional track laying.
(7) Anchor bolt installation and support footboard installation, the anchor bolt installation carries out the district section card accuse with footboard standard order length, guarantees the installation of footboard, and the anchor bolt is installed and is gone on before the rail laying, and finished product protection is done after the installation is accomplished, and support and footboard installation are closely along with the rail laying progress. The trackless measurement construction of the invention reasonably configures manpower and material resources, seamlessly alternates with the rail major, extremely compresses the construction period, and after the platform is installed, the design requirement is met through height and limit retest, the pedal is not required to be cut, the manpower and the material are saved, and the personal safety is ensured.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (3)
1. A trackless measurement construction method of a subway evacuation platform is characterized by comprising the following steps: the method comprises the following steps:
(1) designing yard pile handing, carrying out pile handing by a construction organization, carrying out field pile handing and simultaneously providing formal pile handing data and slope and line adjusting data;
(2) coordinate calculation, namely inputting mileage of a point to be measured in trackless measurement special calculation software, and automatically calculating and exporting the mileage corresponding to the height h of the pedal surface of the evacuation platform by the software;
(3) measuring and lofting, selecting a prism-free measuring mode, starting a laser indicating function of a total station, projecting laser at a mileage position corresponding to the tunnel wall, adjusting the total station to enable the elevation reading of the total station to be equal to the elevation h of the tread surface of the evacuation platform of the points to be measured, and marking the measured points on the tunnel wall by using a marking pen; according to the method, other points are measured and marked on the tunnel wall, and a line is bounced on the tunnel wall by an ink fountain according to the measured points, wherein the line is the elevation of the platform surface;
(4) coordinate sampling, namely manufacturing a special hole taking die according to the evacuation platform bracket and the platform pedal to carry out platform bracket mounting anchor bolt hole distribution and anchor bolt mounting hole center coordinate sampling on the tunnel wall;
(5) data arrangement, namely calculating the length of a bracket, the installation angle of the bracket and the width of a pedal according to design requirements;
(6) ordering materials, namely ordering according to the support length and the pedal width selected by the data sorting calculation table, compiling a material acquisition table, numbering each mileage installation support and pedal in each interval, and pasting a two-dimensional code;
(7) anchor bolt installation and support footboard installation, the anchor bolt installation carries out the district section card accuse with footboard standard order length, guarantees the installation of footboard, and the anchor bolt is installed and is gone on before the rail laying, and finished product protection is done after the installation is accomplished, and support and footboard installation are closely along with the rail laying progress.
2. The subway evacuation platform trackless measurement construction method according to claim 1, characterized in that: and (3) finishing station setting of the total station according to the control piles handed in the design yard, wherein the mileage error is +/-500 mm.
3. The subway evacuation platform trackless measurement construction method according to claim 1, characterized in that: in the step (5), the platform support is required to be limited, and the horizontal distance from the edge of the evacuation platform to the line center line is 1700mm in a straight line section; when the platform is in a curve section outside the curve, the horizontal distance from the edge of the evacuation platform to the central line of the line is 1700-900 x h/1506+31593/R +15 mm; when the platform is in the curve section at the inner side of the curve, the horizontal distance from the edge of the evacuation platform to the central line of the line is
1700+900 × h/1506+29570/R +15 mm; in the formula, h is the track height and the unit mm; r is the radius of the curve in m.
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| CN117968608A (en) * | 2024-04-01 | 2024-05-03 | 中铁电气化局集团有限公司 | Subway evacuation platform installation positioning measuring instrument |
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