Railway roadbed contact net foundation construction complete tool and installation fine adjustment method

Abstract

A railway subgrade contact net foundation construction complete tool is characterized in that the railway subgrade contact net foundation construction complete tool comprises a base, a leveling connecting mechanism, an outer mold and a leveling device, and the base is composed of two long steel channels and two short steel channels; the outer mold is composed of a long mold plate and a short mold plate. The outer mold is connected with the base through a leveling connecting mechanism; and the leveling device is arranged above the long template of the outer mold. Through the leveling connecting mechanism, preliminary leveling and horizontal coordinate adjustment of the outer mold and connection and fixation of the base and the outer mold can be achieved; the leveling device can be used for accurately adjusting the horizontal coordinates of the embedded bolts in the railway roadbed overhead line system foundation and the elevation of the permanent positioning steel plate; powerful guarantee is provided for construction of high-quality engineering of railway roadbed contact net foundation construction; the device is simple in structure, easy to manufacture, convenient and fast to install and capable of being manufactured in batches according to the engineering scale and the work task load, the work efficiency is improved, and the engineering quality can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of railway roadbed contact network foundation construction, in particular to a complete set of tooling for railway roadbed contact network foundation construction and an installation and fine-tuning method. Background Art

[0002] With the continuous development of national high-speed railway construction, it has brought many conveniences to people's travel. High-speed railways have a fast travel speed, which can reach 350km / h or even higher. They are comfortable and safe to ride, and are one of the best means of transportation for people to travel. However, these characteristics have also led to higher requirements for project quality in high-speed railway construction. The standardization and refined management of the construction process have been continuously improved. The four-electric interface project involves the professional cross-construction of pre-station projects and post-station projects. The post-station construction unit has a restrictive effect on the construction quality of the pre-station civil construction unit. The construction quality requirements of the four-electric interface project of high-speed railway are high. The civil construction has not been strictly carried out in accordance with the four-electric quality interface inspection standards, resulting in rework; especially the contact network foundation construction is a key process and difficult project in the four-electric interface project. The anchor bolts and embedded steel plates have extremely high precision requirements, the height difference of the four corners is ≤1mm, and the longitudinal parallel lines must not infringe the limit.

[0003] Due to the non-standardization of traditional and existing construction processes and technologies, the accuracy is not high. The construction technicians in the professional handover room are not familiar with the standard application, which makes the construction personnel cause the inaccurate position of the contact network foundation anchor bolts and embedded steel plates during the construction process, and the accuracy does not meet the standard requirements. The fundamental reason for this problem is that there is no complete set of tooling and installation fine-tuning methods to ensure the construction quality. The existing formwork support method and fine-tuning method require a lot of manpower and mechanical assistance to complete. The template fixation and fine-tuning consume a lot of time and cannot guarantee the construction quality. During the concrete pouring process or construction in the rainy season, the ground is wet and soft, causing the template to shift and deform, resulting in construction quality that does not meet the requirements, bringing great problems and hidden dangers to subsequent work, and rework is required, which not only causes economic losses, but also delays the construction period. Therefore, a complete set of tooling and installation fine-tuning methods are needed to complete this work, so that the construction operation is convenient, the installation is fast and convenient, the work efficiency is improved, and there is no rework in the later stage, so as to ensure the quality of the finished product of the contact network foundation construction. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a complete set of tooling for the construction of a railway subgrade contact network foundation and an installation fine-tuning method to meet the construction of a high-speed railway subgrade contact network foundation; it includes a base, a leveling connection mechanism, an outer mold and a leveling device, the base is composed of two long channel steels and two short channel steels; the outer mold is composed of a long template and a short template; the outer mold is connected to the base through a leveling connection mechanism; the leveling device is arranged above the long template of the outer mold.

[0005] Furthermore, the leveling connection mechanism includes a leveling mechanism and an adjusting screw for tightening the outer mold and the base; the hooks at both ends of the adjusting screw are respectively connected to the outer surface of the short mold plate of the outer mold, and the through holes set at both ends of the long channel steel of the base, and four adjusting screws are provided and are respectively located at the four corners of the outer mold and the base.

[0006] Furthermore, the leveling mechanism includes a positioning frame horizontally fixed on the outer surface of the short template of the outer mold, and supporting steel bars fixed at both ends of the long channel steel of the base. The two ends of the positioning frame are provided with limiting holes that are sleeved with the supporting steel bars, and the outer surface of the supporting steel bars and below the positioning frame are provided with leveling steel bar nuts.

[0007] Furthermore, the positioning frame is made of channel steel, and its two ends are cut into an L shape above the limiting hole.

[0008] Furthermore, the long template of the outer mold is made of a conventional ribbed steel template, and the short template of the outer mold is made of a steel plate, and a plurality of reinforcing ribs are horizontally fixed and welded on the outer surface of the short template.

[0009] Furthermore, the leveling device includes a leveling steel plate and two parallel fixedly connected brackets below the leveling steel plate, and the brackets are fixed above the long template of the outer mold by U-shaped clamps.

[0010] Furthermore, an elliptical vibration hole is provided in the middle of the leveling steel plate, and a plurality of ground corner bolt holes for connecting embedded bolts are also provided on the leveling steel plates on both sides of the vibration hole. Four measuring holes are also provided on the upper surface of the leveling steel plate. The four measuring holes are located outside the vibration hole and form four vertices of a rectangle.

[0011] Furthermore, the inner vertical walls of the long channel steel and the short channel steel of the base are threadedly connected with a plurality of positioning screws, and the bottom surfaces of the grooves at both ends of the long channel steel of the base are also provided with positioning holes.

[0012] The installation fine adjustment method comprises the following steps: S1. Place the steel cage in the bored pile hole of the contact network foundation; S2. The construction personnel first connect the outer mold and the base through the leveling connection mechanism, and then install the base to the position set out by the surveyors according to the design drawings, and make the four corners of the inner wall of the outer mold exactly located at the four corners of the contact network support foundation pedestal set out in the early stage; S3. Prisms are erected at the four corners of the outer mold in sequence. The surveyor measures the elevation of the four corners through a total station and instructs the construction personnel to rotate the leveling steel bar nuts around to adjust the height of the outer mold so that the four corners of the outer mold are roughly at the same elevation. Then, the outer mold and the base are fixed together by adjusting the adjusting screw rod. Finally, the outer mold is adjusted again so that the four corners of its inner wall are exactly located at the four corners of the contact network support foundation pedestal that have been laid out in the early stage, and the ground rods are nailed into the positioning holes on the base for fixing; S4. The embedded bolts are fixedly connected to the permanent positioning steel plate through nuts, and then the embedded bolts are sequentially installed into the ground angle bolt holes on the surface of the leveling steel plate on the leveling device, and the adjusting nuts are screwed into the embedded bolts located at the four corners, and then the two brackets in the leveling device are erected on the long templates on both sides of the outer mold; S5. The surveyor determines the horizontal coordinate position of the embedded bolts by measuring with a total station, and instructs the construction personnel to knock the brackets for adjustment. After the horizontal coordinate position of the embedded bolts is adjusted, the two ends of the two brackets are fixed on the long template of the outer mold in sequence by four U-shaped clamps; then the construction personnel insert the prism rod of the small prism into the measuring hole and make it stand upright on the upper surface of the permanent positioning steel plate. The surveyor determines whether the elevation of the permanent positioning steel plate under the four measuring holes is consistent one by one by measuring with a total station, and instructs the construction personnel to adjust the embedded bolts at the four corners by screwing in the adjusting nuts until the permanent positioning steel plate reaches the level required by the design, and then welds the bottom of the embedded bolts to the steel cage one by one; S6. After the above work is completed, you can continue pouring concrete.

[0013] The advantages and beneficial effects of the present invention are: The present invention can realize the preliminary leveling and horizontal coordinate adjustment of the outer mold, as well as the connection and fixation of the base and the outer mold through the leveling connection mechanism; and the leveling device can accurately adjust the horizontal coordinates of the embedded bolts in the railway roadbed contact network foundation, as well as the elevation of the permanent positioning steel plate; thus providing a strong guarantee for creating a high-quality process of railway roadbed contact network foundation construction; the present invention has a simple structure, is easy to manufacture, and is convenient and quick to install. It can be mass-produced according to the scale of the project and the amount of work tasks, which not only improves work efficiency but also ensures project quality; during the construction of the contact network foundation, no large-scale machinery is required for installation, and only a small amount of manpower is required to complete it, which greatly reduces manpower, material and financial resources, improves economic benefits, saves costs, speeds up construction progress, and effectively guarantees the performance period of contracts with tight construction periods and heavy tasks, thus laying a solid foundation for subsequent construction. Moreover, it can be circulated in other railway roadbed contact network construction projects, can be directly reused, and is not easy to deform; especially the fine-tuning positioning steel plate can meet the fine-tuning of the wire rope foundation construction; it can be made once and used for multiple purposes; it reduces repeated production and saves costs at the same time; the reinforced channel steel of the positioning template can effectively solve the defects of uneven surface filling of the base bed and soft and sinking of concrete pouring; the embedded component grounding terminals and prefabricated CPIII columns can be installed on the contact network foundation, so that the subsequent installation of contact network columns and comprehensive grounding connections can meet the construction quality acceptance specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a complete set of tooling for railway subgrade overhead contact network foundation construction of the present invention; Figure 2 It is a front view of the complete set of tooling for railway subgrade contact network foundation construction of the present invention; Figure 3 It is a left view of the complete set of tooling for railway subgrade contact network foundation construction of the present invention; Figure 4 The invention is a complete set of tooling for railway subgrade contact network foundation construction Figure 3 A magnified image of point A; Figure 5 It is a top view of the complete set of tooling for railway subgrade contact network foundation construction of the present invention when the adjusting screw rod is not installed; Figure 6 The invention is a complete set of tooling for railway subgrade contact network foundation construction Figure 5 The enlarged view of point B; Figure 7 It is a top view of the complete set of tooling leveling device for railway subgrade contact network foundation construction of the present invention; Figure 8 It is a schematic diagram of a complete set of U-shaped clamps for railway subgrade overhead contact network foundation construction of the present invention; Fig. 9 It is a schematic diagram of the adjusting screw rod of the complete tooling for the construction of the railway subgrade contact network foundation of the present invention; Fig.10 It is a top view of a complete set of tooling positioning frame for railway subgrade contact network foundation construction of the present invention; In the figure, 1. base, 11. positioning screw, 12. positioning hole; 2. leveling connection mechanism, 21. leveling mechanism, 211. positioning frame, 212. supporting steel bar, 213. limiting hole, 214. leveling steel bar nut, 22. adjusting screw; 3. outer mold, 31. long template, 32. short template, 33. reinforcing rib, 34. hanging ring; 4. leveling device, 41. leveling steel plate, 411. vibrating hole, 412. ground angle bolt hole, 413. measuring hole; 5. embedded bolt; 6. U-shaped clamp; 7. permanent positioning steel plate; 8. adjusting nut; 9. steel cage. DETAILED DESCRIPTION

[0015] Embodiment 1, as Figure 1-2 As shown, a complete set of tooling for the construction of a railway subgrade contact network foundation and an installation fine-tuning method include a base 1, a leveling connection mechanism 2, an outer mold 3 and a leveling device 4. The base 1 is composed of two long channel steels and two short channel steels; the outer mold 3 is composed of a long template 31 and a short template 32; the outer mold 3 is connected to the base 1 through the leveling connection mechanism 2; the leveling device 4 is arranged above the long template 31 of the outer mold 3.

[0016] In this embodiment, the leveling connection mechanism 2 includes a leveling mechanism 21 and an adjusting screw 22 for tightening the outer mold 3 and the base 1; the hooks at both ends of the adjusting screw 22 are respectively connected to the outer surface of the short template 32 of the outer mold 3, and the through holes set at both ends of the long channel steel of the base 1, and the outer surface of the short template 32 is provided with a hanging ring 34 for connecting with the hook at the end of the adjusting screw 22; a circular hole is set in the center of the hanging ring 34; four adjusting screws 22 are set and are respectively located at the four corners of the outer mold 3 and the base 1, and the adjusting screw 22 has a telescopic function, which is mainly used to cooperate with the leveling mechanism 21 to fix the outer mold 3 on the base 1.

[0017] In this embodiment, the leveling mechanism 21 includes a positioning frame 211 fixed horizontally on the outer surface of the short template 32 of the outer mold 3, and supporting steel bars 212 fixed at both ends of the long channel steel of the base 1. The two ends of the positioning frame 211 are provided with limiting holes 213 that are sleeved with the supporting steel bars 212. The outer surface of the supporting steel bars 212 and located below the positioning frame 211 are provided with leveling steel bar nuts 214. By rotating the leveling steel bar nuts 214 set at the four corners of the outer mold 3, the upper surface of the outer mold 3 can be made roughly horizontal, preparing for the later fine adjustment.

[0018] In this embodiment, the positioning frame 211 is made of channel steel, and its two ends and above the limiting holes 213 are cut into an L shape to facilitate the upper end of the supporting steel bar 212 to pass through the L-shaped notch.

[0019] In this embodiment, the long formwork 31 of the outer formwork 3 adopts a conventional ribbed steel formwork, and the short formwork 32 of the outer formwork 3 is made of steel plate. A plurality of reinforcing ribs 33 are horizontally fixedly welded on the outer surface of the short formwork 32. The use of the reinforcing ribs 33 ensures that the short formwork 32 made of steel plate will not be deformed during concrete pouring and vibration.

[0020] In this embodiment, the leveling device 4 includes a leveling steel plate 41 and two parallel fixed brackets 42 below it. The bracket 42 is fixed above the long template 31 of the outer mold 3 by a U-shaped clamp 6. After the horizontal coordinate adjustment of the embedded bolts 5 is completed and qualified, the U-shaped clamp 6 fixes the leveling device 4 to the outer mold 3 to ensure the accuracy of the subsequent leveling of the permanent positioning steel plate 7.

[0021] In this embodiment, an elliptical vibration hole 411 is provided in the middle of the leveling steel plate 41. The function of the vibration hole 411 is to facilitate the vibration of the vibrating rod when pouring concrete, and it also has the function of reducing the overall weight; a plurality of corner bolt holes 412 for connecting the embedded bolts 5 are also provided on the leveling steel plate 41 located on both sides of the vibration hole 411. The present invention not only has two rows of eight holes in the design of the corner bolt holes 412, but also has four holes. Surveyors can choose eight holes or four holes according to design requirements to match the embedded bolts 5; four measuring holes 413 are also provided on the upper surface of the leveling steel plate 41. The four measuring holes 413 are located on the periphery of the vibration hole 411 and form four vertices of a rectangle. A small prism rod is inserted into the measuring hole 413 so that the small prism rod is erected on the upper surface of the permanent positioning steel plate 7 located on the lower leveling steel plate 41, so that the surveyors can use the total station to measure whether the four points on the upper surface of the permanent positioning steel plate 7 are horizontal, and then direct the adjustment.

[0022] In this embodiment, the inner vertical walls of the long channel steel and the short channel steel of the base 1 are also wired with multiple positioning screws 11. A hole is drilled on the inner wall of the long channel steel or the short channel steel near the outer mold 3, and the hole diameter is slightly larger than the outer diameter of the positioning screw 1. Then, a nut matching the positioning screw 11 is welded to the hole on one side of the channel steel groove, and the positioning screw 11 is screwed in, and the installation of the positioning screw 11 is completed. Its function is to fill a pad in the gap between the outer mold 3 and the base 1 after the elevation leveling of the outer mold 3 is completed. When there is a gap between the lower bottom surface of the outer mold 3 and the ground, the positioning screw 11 is used to tighten it, which can effectively prevent leakage when pouring concrete and ensure the construction quality. Positioning holes 12 are also provided on the bottom surface of the grooves at both ends of the long channel steel of the base 1. After the elevation and horizontal coordinates of the outer mold 3 are adjusted and meet the design requirements, ground spikes are nailed into the positioning holes 12 in sequence to fix it to prevent the outer mold 3 from displacement.

[0023] The installation fine adjustment method of the present invention comprises the following steps: S1, put the steel cage 9 into the hole of the contact network foundation pile; S2. The construction personnel first connect the outer mold 3 and the base 1 through the leveling connection mechanism 2, and then install the base 1 to the position set out by the surveyor according to the design drawing, and make the four corners of the inner wall of the outer mold 3 exactly located at the four corners of the contact network support foundation pedestal set out in the early stage; S3, erect prisms at the four corners of the outer mold (3) in sequence, and the surveyor measures the elevations of the four corners by means of a total station, and instructs the construction personnel to rotate the leveling steel bar nuts 214 around to adjust the height of the outer mold 3 so that the four corners of the outer mold 3 are roughly at the same elevation, and then fix the outer mold 3 and the base 1 together by adjusting the adjusting screw 22; finally, adjust the outer mold 3 again so that the four corners of its inner wall are exactly located at the four corners of the contact network support foundation pedestal that has been previously laid out, and fix it by driving ground spikes into the positioning holes 12 on the base 1; S4, the embedded bolts 5 are fixedly connected to the permanent positioning steel plate 7 through nuts, and then the embedded bolts 5 are sequentially installed into the ground corner bolt holes 412 on the surface of the leveling steel plate 41 on the leveling device 4, and the adjusting nuts 8 are screwed into the embedded bolts 5 located at the four corners, and then the two brackets 42 in the leveling device 4 are erected on the long templates 31 on both sides of the outer mold 3; S5. The surveyor determines the horizontal coordinate position of the embedded bolt 5 by measuring with a total station, and instructs the construction personnel to knock the bracket 42 for adjustment. After the horizontal coordinate position of the embedded bolt 5 is adjusted, the two ends of the two brackets 42 are fixed to the long template 31 of the outer mold 3 in sequence by four U-shaped clamps 6; then the construction personnel insert the prism rod of the small prism into the measuring hole 413 and make it stand upright on the upper surface of the permanent positioning steel plate 7. The surveyor determines whether the elevations of the permanent positioning steel plates 7 below the four measuring holes 413 are consistent one by one by measuring with a total station, and instructs the construction personnel to adjust the embedded bolts 5 at the four corners by screwing in the adjusting nuts 8 until the permanent positioning steel plate 7 reaches the level required by the design, and then welds and fixes the bottom of the embedded bolts 5 to the steel cage 9 one by one; S6. After the above work is completed, the pouring of concrete can be continued.

[0024] It should be emphasized that the embodiments of the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation modes. Any other implementation modes derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A complete set of tools for railway subgrade contact network foundation construction, characterized in that: The invention comprises a base (1), a leveling connection mechanism (2), an outer mold (3) and a leveling device (4), wherein the base (1) is composed of two long channel steels and two short channel steels; the outer mold (3) is composed of a long mold plate (31) and a short mold plate (32); the outer mold (3) is connected to the base (1) via the leveling connection mechanism (2); and the leveling device (4) is arranged above the long mold plate (31) of the outer mold (3).

2. A complete set of tooling for railway subgrade overhead contact network foundation construction according to claim 1, characterized in that: The leveling connection mechanism (2) comprises a leveling mechanism (21) and an adjusting screw rod (22) for tightening the outer mold (3) and the base (1); hooks at both ends of the adjusting screw rod (22) are respectively connected to the outer surface of the short mold plate (32) of the outer mold (3) and through holes provided at both ends of the long channel steel of the base (1); four adjusting screw rods (22) are provided and are respectively located at the four corners of the outer mold (3) and the base (1).

3. A complete set of tools for railway subgrade overhead contact network foundation construction according to claim 2, characterized in that: The leveling mechanism (21) comprises a positioning frame (211) horizontally fixed to the outer surface of the short template (32) of the outer template (3), and supporting steel bars (212) fixed to both ends of the long channel steel of the base (1), the two ends of the positioning frame 211 are provided with limiting holes (213) sleeved with the supporting steel bars (212), and the outer surface of the supporting steel bars (212) and located below the positioning frame (211) are provided with leveling steel bar nuts (214).

4. A complete set of tools for railway subgrade overhead contact network foundation construction according to claim 3, characterized in that: The positioning frame (211) is made of channel steel, and its two ends located above the limiting holes (213) are cut into an L shape.

5. The complete set of tooling for railway subgrade overhead contact network foundation construction according to claim 1, characterized in that: The long formwork (31) of the outer formwork (3) is made of a conventional ribbed steel formwork, and the short formwork (32) of the outer formwork (3) is made of a steel plate. A plurality of reinforcing ribs (33) are horizontally fixedly welded to the outer surface of the short formwork (32).

6. The complete set of tooling for railway subgrade overhead contact network foundation construction according to claim 1, characterized in that: The leveling device (4) comprises a leveling steel plate (41) and two parallel and fixedly connected brackets (42) below the leveling steel plate; the brackets (42) are fixed above the long template (31) of the outer mold (3) via U-shaped clamps (6).

7. A complete set of tools for railway subgrade overhead contact network foundation construction according to claim 6, characterized in that: An elliptical vibrating hole (411) is provided in the middle of the leveling steel plate (41), and a plurality of ground angle bolt holes (412) for connecting embedded bolts (5) are also provided on the leveling steel plate (41) located on both sides of the vibrating hole (411). Four measuring holes (413) are also provided on the upper surface of the leveling steel plate (41), and the four measuring holes (413) are located outside the vibrating hole (411) and form four vertices of a rectangle.

8. The complete set of tooling for railway subgrade overhead contact network foundation construction according to claim 1, characterized in that: The inner vertical walls of the long channel steel and the short channel steel of the base (1) are also threadedly connected with a plurality of positioning screws (11), and the bottom surfaces of the grooves at both ends of the long channel steel of the base (1) are also provided with positioning holes (12).

9. A method for fine-tuning the installation of a complete set of tools for railway subgrade overhead contact network foundation construction according to any one of claims 1 to 8, characterized in that: The installation fine adjustment method comprises the following steps: S1. Place a steel cage (9) in the bored pile hole of the contact network foundation; S2. The construction personnel first connect the outer mold (3) and the base (1) through the leveling connection mechanism (2), and then install the base (1) to the position set out by the surveying personnel according to the design drawing, and make the four corners of the inner wall of the outer mold (3) exactly located at the four corners of the contact network support foundation pedestal set out in the early stage; S3, prisms are erected at the four corners of the outer mold (3) in sequence, and the surveyor measures the elevations of the four corners by means of a total station, and instructs the construction personnel to rotate the leveling steel bar nuts (214) around the outer mold (3) to adjust the height so that the four corners of the outer mold (3) are roughly at the same elevation, and then the outer mold (3) and the base (1) are fixed together by adjusting the adjusting screw (22); finally, the outer mold (3) is adjusted again so that the four corners of the inner wall are exactly located at the four corners of the contact network support foundation pedestal that has been previously laid out, and the ground rods are nailed into the positioning holes (12) on the base (1) to fix it; S4, the embedded bolts (5) are fixedly connected to the permanent positioning steel plate (7) through nuts, and then the embedded bolts (5) are sequentially installed into the ground corner bolt holes (412) on the surface of the leveling steel plate (41) on the leveling device (4), and the adjusting nuts (8) are screwed into the embedded bolts (5) located at the four corners, and then the two brackets (42) in the leveling device (4) are erected on the long templates (31) on both sides of the outer mold (3); S5. The surveyor determines the horizontal coordinate position of the embedded bolt (5) by measuring with a total station, and instructs the construction personnel to knock the bracket (42) to adjust it. After the horizontal coordinate position of the embedded bolt (5) is adjusted, the two ends of the two brackets (42) are fixed to the long template (31) of the outer mold (3) in sequence by four U-shaped clamps (6); then the construction personnel insert the prism rod of the small prism into the measuring hole (413) and make it stand upright on the upper surface of the permanent positioning steel plate (7). The surveyor determines whether the elevation of the permanent positioning steel plate (7) below the four measuring holes (413) is consistent one by one by measuring with a total station, and instructs the construction personnel to adjust the embedded bolts (5) at the four corners by screwing in the adjusting nuts (8) until the permanent positioning steel plate (7) reaches the level required by the design, and then welds the bottom of the embedded bolts (5) to the steel cage (9) one by one; S6. After the above work is completed, you can continue pouring concrete.

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