CN116892407A - Method for installing inverted upright post at top of tunnel - Google Patents
Method for installing inverted upright post at top of tunnel Download PDFInfo
- Publication number
- CN116892407A CN116892407A CN202311009090.6A CN202311009090A CN116892407A CN 116892407 A CN116892407 A CN 116892407A CN 202311009090 A CN202311009090 A CN 202311009090A CN 116892407 A CN116892407 A CN 116892407A
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- crank arm
- inverted
- tunnel
- arm vehicle
- upright post
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 claims abstract description 33
- 239000000126 substance Substances 0.000 claims description 24
- 238000010276 construction Methods 0.000 description 8
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/60—Devices for withdrawing props or chocks
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The application provides a tunnel top inverted upright post mounting method, which comprises the following steps that S1, a crank arm vehicle is hoisted to a flat plate of a rail vehicle in a track area through a hoisting well by using an automobile crane and is fixed on the flat plate of the rail vehicle; s2, driving the rail car to a working position; transferring the required inverted upright post to an operation position according to a drawing; s3, operating the crank arm vehicle to enable an operating platform of the crank arm vehicle to rise to an installation point position at the top of the tunnel, and installing a hoisting ring on an anchor bolt embedded at the installation point position; s4, installing a hoisting pulley on the hoisting ring; operating the crank arm vehicle to enable an operating platform of the crank arm vehicle to descend to retract the installation point, and lifting the required inverted upright post to the installation point at the top of the tunnel by using a lifting pulley; and S5, operating the crank arm vehicle to the mounting point position at the top of the tunnel to perform alignment mounting on the inverted upright post. The application can solve the problems of on-site processing of the ultra-high lift truck or building of the scaffold.
Description
Technical Field
The application relates to the technical field of tunnel construction, in particular to a tunnel top inverted upright post mounting method.
Background
At present, the method for installing the inverted upright post adopted at the top of the high-clearance large-section tunnel in the rail transit section has the problems of high installation and construction difficulty, low efficiency and high safety risk. The conventional installation method is as follows:
the inverted upright post is generally transported to an installation site by manpower, and is installed by processing an ultra-high ladder truck or erecting a scaffold on the site.
When the mode of processing the ultra-high ladder car on site is used, the ultra-high ladder car is high in height, so that the requirements on the material and welding quality of the ultra-high ladder car are high; meanwhile, the bearing capacity of the super-high ladder car is lowered due to the fact that the super-high ladder car is too high, the super-high ladder car is not stable enough, and the shaking amplitude of personnel is large when working on a super-high ladder car platform, so that the control of construction safety is not facilitated. In addition, the tunnel is various in form and different in height, so that the ultrahigh-rise trolley with various height and size needs to be processed, and the mode is not only high in management difficulty, but also unfavorable for control of construction cost.
When the mode of setting up the scaffold is used, firstly, more scaffolds are used, so that the scaffold is difficult to transport and set up; meanwhile, the inverted upright posts are arranged at intervals of 6-8 meters. Therefore, every position of the inverted upright post is required to be dismantled and the scaffold at the previous position is required to be erected again, which is labor-and time-consuming, occupies the resources of the track area for a long time, and reduces the utilization rate of the resources of the track area; in addition, too high a scaffold erection also presents a problem of high safety risk.
Disclosure of Invention
The application aims to provide a tunnel top inverted upright post mounting method which is used for solving the problems of high mounting and construction difficulty, low efficiency and high safety risk in field processing of an ultra-high ladder car or building of a scaffold. The specific technical scheme is as follows:
a tunnel top inverted column mounting method comprises the following steps:
step S1, hoisting a crank arm vehicle to a flat plate of a rail vehicle in a track area through a hoisting well by using an automobile crane, and fixing the crank arm vehicle on the flat plate of the rail vehicle;
s2, on one hand, driving the rail car to a working position; on the other hand, the required inverted upright post is transported to an operation position according to a drawing; the information on the drawing sheet comprises the height dimension and arch width data of the tunnel to be constructed; the inverted upright post comprises an upright post body and a bottom plate arranged at one end of the upright post body;
s3, operating the crank arm vehicle to enable an operating platform of the crank arm vehicle to rise to an installation point position at the top of the tunnel, and installing a hoisting ring on an anchor bolt embedded at the installation point position;
s4, installing a hoisting pulley on the hoisting ring; operating the crank arm vehicle to enable an operating platform of the crank arm vehicle to descend to retract the installation point, and lifting the required inverted upright post to the installation point at the top of the tunnel by using a lifting pulley;
and S5, operating the crank arm vehicle to the mounting point position at the top of the tunnel to perform alignment mounting on the inverted upright post.
Optionally, in step S1, when the crank arm vehicle is fixed on the slab of the railcar, the center line of the crank arm vehicle coincides with the center line of the railcar; a block capable of preventing wheels from moving is plugged into each wheel of the crank arm vehicle; the crank arm car is bound on a flat plate of the railway car by using a chain block.
Optionally, it is necessary to confirm again whether the crank car is fixed on the slab of the railcar before step S2.
Optionally, before operating the crank arm vehicle in step S3, it is required to verify whether the crank arm vehicle can normally operate; specifically, the installer enters the operating platform of the crank arm vehicle, hangs the safety belt on the operating platform, firstly operates the operating platform of the crank arm vehicle to ascend, and then operates the operating platform of the crank arm vehicle to descend, so that the crank arm vehicle is ensured to be normally used.
Optionally, before installing the hoisting ring in step S3, checking the exposed size of the embedded anchor bolt, and after determining that the exposed size meets the requirement, measuring whether the distance between the anchor bolts meets a preset standard; if the preset standard is not met, the distance between the anchor bolts is adjusted by using an anchor bolt adjuster so as to ensure that the bottom plate of the inverted upright post is installed on the anchor bolts at one time;
the anchor bolt is a chemical anchor bolt.
Optionally, after rechecking and adjusting the chemical anchor bolts in the step S3, firstly selecting the chemical anchor bolts positioned at the highest side of the top of the tunnel in the installation point positions to install the hoisting ring.
Optionally, in step S4, after installing the lifting tackle on the lifting ring, a first connecting rope for lifting the flip-chip upright needs to be configured for the lifting tackle.
Optionally, in step S4, when the flip upright is lifted by using the lifting tackle, the flip upright needs to be firmly bound by one end of the first connecting rope at a position 0.5-1.5m away from the bottom plate of the flip upright, and then two other second connecting ropes are bound at the lowest part of the flip upright, and two installers respectively pull the second connecting ropes in opposite directions to prevent the flip upright from swinging in the lifting process; and finally, pulling the first connecting rope by at least 2 installers to lift the inverted upright post to the installation point position at the top of the tunnel.
Optionally, when the flip upright is aligned and installed in step S5, firstly, determining the angle direction of the flip upright, arranging a plurality of mounting holes on the bottom plate, aligning the mounting holes on the bottom plate aligned with the side with the lower anchor bolts with the anchor bolt holes, and then performing alignment and installation; then, the lifting ring and the lifting pulley are removed, and an installer is informed to pull the second connecting rope according to the direction of the inverted upright post until other mounting holes on the bottom plate are sequentially and smoothly aligned with the anchor bolt hole sites, so that the installation is completed; and finally, removing the first connecting rope and the second connecting rope, and descending and resetting the operating platform of the crank arm vehicle.
Optionally, when determining the angular direction of the flip upright in step S5, on the one hand, it is required to ensure that the mounting points of the bottom plate and the tunnel top are attached; on the other hand, the direction of the flip-chip upright needs to be adjusted, specifically, the length direction of the flip-chip upright is adjusted to be perpendicular to the track, and the width direction is adjusted to be parallel to the track.
The application of the technical scheme of the application has at least the following beneficial effects:
according to the tunnel top inverted upright post mounting method provided by the application, the crank arm trolley, the rail trolley, the lifting ring and the lifting pulley are combined to be used in steps S1-S5, so that the inverted upright post is mounted, the auxiliary measure consumable is saved, the number of constructors is reduced, the mounting difficulty is reduced, the mounting construction efficiency is improved, the utilization rate of resources in a rail running area is improved, the construction safety risk is reduced, the safety of operators is ensured, and the effects of accelerating, reducing the cost and improving the efficiency are achieved. The application can be applied to installation and construction of large equipment facilities at the top of the high-clearance large-section tunnel in the rail transit section.
In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a front view of the present application after installing a lifting ring on a chemical anchor at step S3;
FIG. 2 is a front view of the flip-chip stud after being mounted in alignment at step S5 in an embodiment of the present application;
FIG. 3 is a side view of FIG. 2;
the novel tunnel is characterized by comprising a chemical anchor bolt 1, a hoisting ring 2, a vertical column body 3, a bottom plate 4, a bottom plate A and a tunnel top.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
Examples:
referring to fig. 1-3, a tunnel top flip-chip stud mounting method includes the steps of:
step S1, hoisting a crank arm vehicle to a flat plate of a rail vehicle in a track area through a hoisting well by using an automobile crane, and fixing the crank arm vehicle on the flat plate of the rail vehicle;
s2, on one hand, driving the rail car to a working position; on the other hand, the required inverted upright post is transported to an operation position according to a drawing; the information on the drawing sheet comprises the height dimension and arch width data of the tunnel to be constructed; the inverted upright post comprises an upright post body 3 and a bottom plate 4 arranged at one end of the upright post body 3;
s3, operating the crank arm vehicle to enable an operating platform of the crank arm vehicle to rise to an installation point position of the tunnel top A, and installing a hoisting ring 2 on the chemical anchor bolt 1 pre-buried at the installation point position;
s4, installing a hoisting pulley on the hoisting ring 2; operating the crank arm vehicle to enable an operating platform of the crank arm vehicle to descend to retract the installation point, and lifting the required inverted upright post to the installation point of the tunnel top A by using a lifting pulley;
and S5, operating the crank arm vehicle to the installation point of the tunnel top A to perform contraposition installation on the inverted upright post.
In the step S1, when the crank arm vehicle is fixed on a flat plate of the rail vehicle, the central line of the crank arm vehicle is overlapped with the central line of the rail vehicle; a block (in particular a triangle wedge-shaped square) capable of preventing the wheels from moving is plugged into each wheel of the crank arm vehicle; according to the reserved holes on the chassis of the crank arm vehicle, 4 sets of 1.5T chain blocks are used for binding the crank arm vehicle on four corners of a flat plate of the railway vehicle, so that the crank arm vehicle is prevented from moving, and the danger of uneven stress during operation of the crank arm vehicle is prevented.
It is again necessary to confirm whether the crank car is fixed to the slab of the railcar before step S2.
Before operating the crank arm vehicle in the step S3, verifying whether the crank arm vehicle can normally operate; specifically, the installer enters the operating platform of the crank arm vehicle, hangs the safety belt on the operating platform, firstly operates the operating platform of the crank arm vehicle to ascend, then operates the operating platform of the crank arm vehicle to descend, and ensures that the crank arm vehicle is normally used without safety problems.
Before installing the hoisting ring 2 in the step S3, checking the exposed size of the embedded chemical anchor bolts 1, and measuring whether the spacing between the chemical anchor bolts 1 reaches a preset standard (specifically 650mm multiplied by 450 mm) after determining that the exposed size meets the requirement; if the preset standard is not met, the distance between the chemical anchors 1 is adjusted by using the adjuster of the chemical anchors 1, so that the base plate 4 of the inverted upright post is installed on the chemical anchors 1 at one time.
After rechecking and adjusting the chemical anchor bolts 1 in the step S3, firstly selecting the chemical anchor bolt 1 positioned at the highest side of the tunnel top A in the installation point to install the hoisting ring 2; the hoisting ring 2 is connected with the chemical anchor bolt 1 through an adaptive bolt.
In step S4, after the lifting trolley is mounted on the lifting ring 2, a first connecting rope (in particular, a hemp rope) for lifting the flip-chip upright needs to be provided for the lifting trolley.
In step S4, when the flip upright is lifted by using the crane block, the flip upright is required to be firmly bound at a position 41m away from the bottom plate of the flip upright by one end of the first connecting rope, and then two other second connecting ropes (specifically, hemp ropes) are bound at the lowest part of the flip upright, and two installer oppositely pull the second connecting ropes respectively to prevent the flip upright from swinging in the lifting and lifting process; and finally, 5 installers pull the first connecting rope to lift the inverted upright post to the installation point of the tunnel top A.
When the inverted upright post is aligned and installed in the step S5, firstly, determining the angle direction of the inverted upright post, arranging four mounting holes on the bottom plate 4, aligning and installing the mounting holes on the bottom plate 4, which are aligned with the lower side of the chemical anchor bolt 1, with the hole positions of the chemical anchor bolt 1; specifically, after aligning the mounting hole on the lower side of the bottom plate 4 aligned with the chemical anchor bolt 1 with the hole site of the chemical anchor bolt 1, informing an installer to slowly pull up the second connecting rope, and after the bottom plate 4 of the inverted upright post enters the chemical anchor bolt 1, installing a gasket and a nut; then, the lifting ring 2 and the lifting pulley are removed, and an installer is informed to pull the second connecting rope according to the direction of the inverted upright post until other mounting holes on the bottom plate 4 are sequentially and smoothly aligned with the hole sites of the chemical anchor bolts 1, so that the installation is completed; and finally, removing the first connecting rope and the second connecting rope, and descending and resetting the operating platform of the crank arm vehicle.
When the angle direction of the flip upright is determined in the step S5, on one hand, the fitting of the mounting points of the bottom plate 4 and the tunnel top A needs to be ensured, so that the mounting of the flip upright is facilitated; on the other hand, the direction of the flip upright post needs to be adjusted, specifically, the length direction of the flip upright post is adjusted to be perpendicular to the track by using a horizontal ruler, and the width direction is adjusted to be parallel to the track; in the direction adjustment process of the inverted upright post, the bottom plate 4 is not attached to the top A of the tunnel, a gap exists between the bottom plate 4 and the top A of the tunnel, and the stabilizing effect on the upright post body 3 is achieved by screwing an adjusting nut on the wall side of the tunnel; after the direction of the inverted upright is adjusted, the nut moment connecting the inverted upright and the chemical anchor 1 is fastened in place according to the standard.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The tunnel top inverted column mounting method is characterized by comprising the following steps of:
step S1, hoisting a crank arm vehicle to a flat plate of a rail vehicle in a track area through a hoisting well by using an automobile crane, and fixing the crank arm vehicle on the flat plate of the rail vehicle;
s2, on one hand, driving the rail car to a working position; on the other hand, the required inverted upright post is transported to an operation position according to a drawing; the information on the drawing sheet comprises the height dimension and arch width data of the tunnel to be constructed; the inverted upright post comprises an upright post body (3) and a bottom plate (4) arranged at one end of the upright post body (3);
s3, operating the crank arm vehicle to enable an operating platform of the crank arm vehicle to rise to an installation point position of the tunnel top (A), and installing a hoisting ring (2) on an anchor bolt embedded at the installation point position;
s4, installing a hoisting pulley on the hoisting ring (2); operating the crank arm vehicle to enable an operating platform of the crank arm vehicle to descend to retract the installation point, and lifting the required inverted upright post to the installation point of the tunnel top (A) by using a lifting pulley;
and S5, operating the crank arm vehicle to the mounting point of the tunnel top (A) to perform alignment mounting on the inverted upright post.
2. The tunnel top flip-chip column mounting method according to claim 1, wherein in step S1, when the crank car is fixed on the flat plate of the railcar, the center line of the crank car coincides with the center line of the railcar; a block capable of preventing wheels from moving is plugged into each wheel of the crank arm vehicle; the crank arm car is bound on a flat plate of the railway car by using a chain block.
3. The tunnel roof inverted pillar mounting method according to claim 1, wherein it is required to confirm again whether the crank car is fixed to the slab of the railcar before step S2.
4. The tunnel top flip-chip column mounting method according to claim 1, wherein before the operation of the crank arm vehicle in step S3, it is necessary to verify whether the crank arm vehicle can normally operate; specifically, the installer enters the operating platform of the crank arm vehicle, hangs the safety belt on the operating platform, firstly operates the operating platform of the crank arm vehicle to ascend, and then operates the operating platform of the crank arm vehicle to descend, so that the crank arm vehicle is ensured to be normally used.
5. The tunnel top inverted column mounting method according to claim 1, wherein before the step S3 of mounting the lifting ring (2), the exposed size of the embedded anchor bolts needs to be checked, and after the exposed size is determined to meet the requirement, whether the distance between the anchor bolts reaches a preset standard or not needs to be measured; if the preset standard is not met, the distance between the anchor bolts is adjusted by using an anchor bolt adjuster so as to ensure that the bottom plate (4) of the inverted upright post is installed on the anchor bolts at one time;
the anchor bolt is a chemical anchor bolt (1).
6. The method for installing the inverted vertical column at the top of the tunnel according to claim 5, wherein after the chemical anchor bolts (1) are rechecked and adjusted in the step S3, the chemical anchor bolts (1) positioned at the highest side of the top (a) of the tunnel are selected to install the lifting ring (2) in the installation point.
7. The tunnel top flip-chip column mounting method according to claim 1, characterized in that in step S4, after mounting the lifting trolley on the lifting ring (2), a first connection rope for lifting the flip-chip column is required to be provided for the lifting trolley.
8. The method for installing the inverted column at the top of the tunnel according to claim 7, wherein in the step S4, when the inverted column is lifted by using the lifting pulley, the inverted column is firmly bound at a position 0.5-1.5m away from the bottom plate (4) of the inverted column by one end of the first connecting rope, and then two other second connecting ropes are bound at the lowest part of the inverted column, and the second connecting ropes are respectively pulled in opposite directions by two installers to prevent the inverted column from swinging in the lifting and lifting process; finally, the first connecting rope is pulled by at least 2 installers to lift the inverted upright post to the installation point of the tunnel top (A).
9. The method for installing the inverted column at the top of the tunnel according to claim 8, wherein when the inverted column is installed in the alignment in the step S5, firstly, the angular direction of the inverted column is determined, a plurality of installing holes are formed in the bottom plate (4), and the installing holes on the bottom plate (4) aligned with the side with the lower anchor bolts are aligned with the anchor bolt hole sites and then the alignment installation is performed; then, the lifting ring (2) and the lifting pulley are removed, and an installer is informed to pull the second connecting rope according to the direction of the inverted upright post until other mounting holes on the bottom plate (4) are sequentially and smoothly aligned with the anchor bolt hole sites, so that the installation is completed; and finally, removing the first connecting rope and the second connecting rope, and descending and resetting the operating platform of the crank arm vehicle.
10. The tunnel roof inverted pillar mounting method according to claim 9, wherein when determining the angular direction of the inverted pillar in step S5, on the one hand, it is necessary to ensure the fitting of the mounting points of the bottom plate (4) and the tunnel roof (a); on the other hand, the direction of the flip-chip upright needs to be adjusted, specifically, the length direction of the flip-chip upright is adjusted to be perpendicular to the track, and the width direction is adjusted to be parallel to the track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311009090.6A CN116892407A (en) | 2023-08-11 | 2023-08-11 | Method for installing inverted upright post at top of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311009090.6A CN116892407A (en) | 2023-08-11 | 2023-08-11 | Method for installing inverted upright post at top of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116892407A true CN116892407A (en) | 2023-10-17 |
Family
ID=88312195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311009090.6A Pending CN116892407A (en) | 2023-08-11 | 2023-08-11 | Method for installing inverted upright post at top of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116892407A (en) |
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2023
- 2023-08-11 CN CN202311009090.6A patent/CN116892407A/en active Pending
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