CN212867045U - Subway prefabricated assembly column type inspection pit structure - Google Patents
Subway prefabricated assembly column type inspection pit structure Download PDFInfo
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- CN212867045U CN212867045U CN202021067218.6U CN202021067218U CN212867045U CN 212867045 U CN212867045 U CN 212867045U CN 202021067218 U CN202021067218 U CN 202021067218U CN 212867045 U CN212867045 U CN 212867045U
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Abstract
The utility model belongs to the technical field of urban rail transit, specifically provide a prefabricated assembly column inspection hole structure of subway, including short sleeper pillow piece, prefabricated stand and fastener, a plurality of prefabricated stands set up along the extending direction interval of rail, and short sleeper pillow piece is filled in the foundation ditch that is located inspection hole both sides. Connecting a plurality of short sleeper blocks with the steel rail according to a preset distance by using fasteners to form a rail panel; hoisting and coarsely paving the track panel in foundation pits at two sides of the inspection pit, binding a reinforcement cage around the track panel and erecting a mold; adjusting the geometric shape and position state of the short sleeper block to adjust the steel rail to a preset state, and then pouring concrete to fix the short sleeper block and the foundation pit into a whole; when the strength of the concrete reaches a preset condition, removing the form, removing the fasteners and the steel rails, and installing prefabricated stand columns on the short sleeper blocks; and installing the steel rail to the top end of the prefabricated upright post through a fastener. The construction efficiency and quality are improved, the construction period is shortened, and the labor intensity is reduced.
Description
Technical Field
The utility model belongs to the technical field of urban rail transit, concretely relates to prefabricated assembly column inspection pit structure of subway.
Background
The rail transit such as urban subway can alleviate ground traffic pressure effectively, solves the problem such as city jam, air pollution. With the high-speed development of subway construction in various cities, vehicle section maintenance bases related to subways are also constructed in large batches, vehicle comprehensive maintenance bases are mainly divided into two types according to different use functions, vehicle sections and parking lots are used for vehicle maintenance and parking, and the single vehicles are named as an application library and a maintenance library. Be equipped with multiseriate maintenance trench in the storehouse, every row is examined and is repaiied the trench and all is equipped with a large amount of stands, plays the support track, bears the train load and provides effects such as overhauing the space. The maintenance trench is also called a column type inspection pit, and mainly comprises a maintenance pit, a column and a track.
At present, the upright posts of the vehicle section and the upright post inspection pit section in the parking lot in the subway are mostly in the form of on-site molding cast-in-place concrete. Because the track system and the civil engineering system belong to different standard sections and the like, the in-warehouse upright post type inspection pit is completed by two construction units of the track and the civil engineering, generally, the civil engineering unit firstly constructs the inspection pit and the upright post with partial length, then the track unit constructs the upright post with residual length, and the steel rail is laid on the upright post. In site operation, the embedded position precision of the embedded part on the upright column can not meet the requirement of the steel rail laying precision, and the rail laying is easy to cause some unfilled corners, damages and the like to the finished upright column. Because the concrete column is constructed before the track is laid, the plane and the vertical positioning of the column have more errors, so that the installation precision of the steel rail is difficult to ensure, the positioning precision is poor, partial columns need to be repaired or removed, and the workload is huge. Because the stand construction is poured and accomplished twice, the maintenance hole stand quantity is big, and the monomer is little, is in the both sides of inspection hole, and artifical formwork supporting is difficult, and construction operation links are many, construction precision and quality are difficult to control, the material waste is great, construction period is longer scheduling problem, causes engineering cost to improve, the efficiency of construction is low, seriously influences the whole progress of engineering, and on-the-spot wet work volume is big, is difficult to satisfy the requirement in aspects such as urban rail transit construction period, construction precision, aesthetic property. In addition, for the net distance of inner wall as far as possible increase, convenient inspection, nevertheless because the restriction of gauge easily leads to present cast-in-place formula stand top fastener to reserve the sleeve pipe or connect the hole apart from inspection pit inner wall less, and the concrete thickness of inner wall is thinner, in follow-up use, diseases such as splitting and crackle appear easily.
The prior patent CN107558313A utility model discloses a small upright post and track integral construction structure and method for a subway inspection pit, and the patent CN107268348A utility model discloses a subway post type inspection pit construction method; the above patents mainly improve the upright column type inspection pit from the perspective of the construction method, but all the upright column type construction of cast-in-place concrete has the defects of low construction efficiency, large wet work volume, serious pollution and the like. The utility model discloses a prefabricated H-shaped plate column combined track structure for track traffic, and the utility model discloses a prefabricated plate column combined track structure for track traffic, and the utility model CN209052949U replaces the cast-in-place concrete column through the prefabricated plate column combined structure, which solves the disadvantages of the cast-in-place column to a certain extent, but the prefabricated concrete plate column structure in the patent has heavy weight, difficult hoisting, transportation and construction, and the basis is prefabricated plate and self-compacting concrete, so that the prefabricated H-shaped plate column combined track structure is high in cost when applied to subway train lines and has poor economical efficiency; the basic prefabricated slab is inconvenient for the walking operation in the inspection pit; the defects of large construction fine adjustment amount, high requirement on fine adjustment equipment and the like exist.
Disclosure of Invention
The utility model aims at overcoming the problem of inspection hole structure construction difficulty and inefficiency among the prior art.
Therefore, the utility model provides a prefabricated assembly column type inspection pit structure for subway, which comprises short sleeper blocks, prefabricated columns and fasteners, wherein the prefabricated columns are arranged at intervals along the extending direction of the steel rail, and the short sleeper blocks are filled in foundation pits at two sides of the inspection pit;
the steel rail fastening device is characterized in that an upper supporting steel plate and a lower supporting steel plate are welded at two ends of the prefabricated stand column respectively, the lower supporting steel plate is connected with the short rail sleeper block through bolts, the upper supporting steel plate is connected with the fasteners through bolts, and hasps used for fastening steel rails are arranged on the fasteners.
Preferably, the cross section of the prefabricated upright post is in a cross shape.
Preferably, the short sleeper block is a concrete structure with the length of 400mm, the length of 400mm and the height of 200 mm.
Preferably, a concrete protective layer is arranged on the inner side of the short sleeper block, and vertical steel bars and transverse steel bars are arranged in the concrete protective layer.
Preferably, the structure still includes perpendicularly the bracket that the rail extending direction arranged, the bracket is prefabricated concrete structure, the bracket with the lateral wall of prefabricated stand passes through bolted connection, the top welding of bracket has the steel sheet that is used for supporting the rail.
Preferably, an insulating gasket is arranged between the fastener and the supporting steel plate, and a connecting hole for a bolt to penetrate through is formed in the insulating gasket.
Preferably, four connecting holes are formed in the short sleeper block.
The utility model has the advantages that: the utility model provides a structure is bored in prefabricated assembly column inspection of subway, including short sleeper block, prefabricated stand and fastener, a plurality of prefabricated stands set up along the extending direction interval of rail, and short sleeper block is filled in the foundation ditch that is located inspection hole both sides. Connecting a plurality of short sleeper blocks with the steel rail according to a preset distance by using fasteners to form a rail panel; hoisting and coarsely paving the track panel in foundation pits at two sides of the inspection pit, binding a reinforcement cage around the track panel and erecting a mold; adjusting the geometric shape and position state of the short sleeper block to adjust the steel rail to a preset state, and then pouring concrete to fix the short sleeper block and the foundation pit into a whole; when the strength of the concrete reaches a preset condition, removing the form, removing the fasteners and the steel rails, and installing prefabricated stand columns on the short sleeper blocks; and installing the steel rail to the top end of the prefabricated upright post through a fastener. The full-assembly type construction of the upright post type inspection pit is realized, the construction efficiency and quality are improved, the construction period is shortened, and the labor intensity is reduced.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a three-dimensional schematic view of the subway prefabricated assembling column type inspection pit structure of the utility model;
fig. 2 is a three-dimensional explosion schematic diagram of the subway prefabricated assembling column type inspection pit structure of the utility model;
fig. 3 is a schematic diagram of the three-dimensional explosion of the contact rail position of the subway prefabricated assembling column type inspection pit structure of the utility model;
fig. 4 is a schematic plan view of the subway prefabricated assembling column type inspection pit structure of the present invention;
FIG. 5 is an I-I cross section schematic diagram of the subway prefabricated assembling column type inspection pit structure of the utility model;
FIG. 6 is a schematic diagram of a prefabricated column structure of the subway prefabricated assembly column inspection pit structure of the present invention;
fig. 7 is a schematic diagram of a prefabricated column structure at a contact rail installation position of the subway prefabricated assembly column inspection pit structure of the present invention;
fig. 8 is a schematic structural view of a corbel of the prefabricated assembly column type inspection pit structure of the subway of the utility model;
fig. 9 is a schematic view of a short sleeper block of the subway prefabricated assembling column type inspection pit structure of the present invention;
fig. 10 is the utility model discloses the short sleeper of subway prefabricated assembly column inspection pit structure arranges the schematic diagram.
Description of reference numerals: short sleeper block 1, prefabricated stand 2, connecting bolt 3, fastener 4, rail 5, bracket 6, supporting steel plate 7, connecting hole 8, connecting reinforcement 9, insulating gasket 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The embodiment of the utility model provides a subway prefabrication assembly column inspection pit structure, as shown in fig. 1-10, including short sleeper block 1, prefabricated stand 2 and fastener 4, a plurality of prefabricated stand 2 set up along the extending direction interval of rail 5, short sleeper block 1 is filled in the foundation ditch that is located inspection pit both sides;
the two ends of the prefabricated stand column 2 are respectively welded with an upper supporting steel plate 7 and a lower supporting steel plate 7, the lower supporting steel plate 7 is connected with the short sleeper block 1 through bolts, the upper supporting steel plate 7 is connected with the fasteners 4 through bolts, and the fasteners 4 are provided with hasps for fastening the steel rails 5.
Wherein, short sleeper block 1 has four connecting holes 8, and wherein two connecting holes of diagonal are used for the installation of fastener when lower part foundation construction, and after short sleeper block 1 construction was accomplished, demolish fastener 4 and rail 5, four connecting holes 8 are all used for connecting prefabricated stand 2.
The short sleeper block 1 is connected with the steel rail 5 in advance through a fastener 4, so that the installation and fine adjustment are convenient; the bottom surface of the short sleeper is provided with a connecting steel bar 9 which plays a role in strengthening the connection with the lower foundation. The strength and precision of the lower supporting structure meet the requirements of subsequent installation of the prefabricated stand column 2 by constructing and finely adjusting the short sleeper track structure. The short sleeper block of the embodiment has the length of 400mm, the width of 400mm, the height of 200mm, the diameter of the connecting hole of 48mm and the depth of 150 mm.
The inner side of the short sleeper block 1 is provided with a concrete protective layer with the thickness of 100mm, and an upper layer and a lower layer of longitudinal steel bars and transverse stirrups are arranged to prevent the concrete on the inner side of the short sleeper block from cracking.
The prefabricated upright columns 2 are arranged at intervals along the extending direction of the steel rail 5. The prefabricated upright post 2 is a cross steel structure with upper and lower ends provided with supporting steel plates 7 prefabricated in a factory, the upper end steel plate is connected with the steel rail 5 through a fastener 4, and the operation of installing the fastener and supporting the steel rail is facilitated; the lower end steel plate is connected with the supporting surface of the lower short sleeper block 1 through four connecting bolts 3, so that the connecting bolts 3 can be conveniently installed and a supporting plane can be provided; the main body structures are connected through the connecting bolts 3, and the problem of wet joints in the construction process is avoided. The length of the supporting steel plate at the upper end and the lower end of the prefabricated upright column is 400mm, the width of the supporting steel plate is 400mm, the thickness of the supporting steel plate is 20mm, the diameter of the corresponding connecting hole is 48mm, and the length of the upright column is 1000 mm. Wherein, the supporting steel plate 7 is connected with the prefabricated upright post body (concrete structure) by welding.
Bracket 6 is the prefabricated steel construction of taking the supporting steel board, and the cross steel sheet that passes through connecting bolt 3 and part prefabricated stand links to each other, plays the effect of supporting the contact rail to the condition that the subway adopted the contact rail power supply.
The steel rail 5 is connected with the prefabricated stand column 2 top surface supporting steel plate through a fastener 4, and an insulating gasket 10 is arranged on the bottom surface of the fastener to meet the insulating requirement of a circuit and play a role in fine adjustment.
The construction procedure of this example is as follows:
the method comprises the following steps: the civil engineering construction unit hands over the site to a track construction unit;
step two: connecting the short rail sleeper blocks 1 with the steel rails 5 through fasteners 4 in advance to assemble a rail panel, and hoisting and coarsely paving the rail panel at the construction positions on two sides of an inspection pit;
step three: binding reinforcing steel bars around the track panel to form a reinforcing steel bar cage and erecting a mould;
step four: the geometric shape and position of the steel rail in the short sleeper track structure are finely adjusted, and the geometric shape and position of the short sleeper block 1 are reflected through the geometric shape and position of the steel rail 5, so that the precision of the track structure of the short sleeper block 1 meets the laying requirement;
step five: pouring concrete;
step six: when the concrete reaches a certain strength, removing the mold and the fasteners 4 and the steel rails 5 on the short sleeper blocks 1;
step seven: after the construction of the lower foundation short sleeper supporting structure is completed, the prefabricated upright posts 2 without the connecting holes at the general positions are installed on the short sleeper blocks through the connecting bolts 3 according to the fastener intervals; installing the contact rail upright post 2 with the connecting holes on the short sleeper block 1 at certain intervals through connecting bolts 3;
step eight: mounting a bracket 6 on the contact rail upright post 2 with a connecting hole 8 through a connecting bolt 3; bracket 6 links to each other with conductor rail stand 2 through connecting bolt 3, and the conductor rail support position can be changed in a flexible way and arrange according to the actual construction situation in scene.
Step nine: and installing a fastener 4 and a steel rail 5, finally finely adjusting the track structure, finely adjusting and fixing the track gauge, the level, the elevation and the direction of the track structure, further eliminating construction errors and correcting precision, enabling the track surface to meet the requirement of line precision, and completing construction.
And the steel rail 5 and the fastener 4 which are detached after the short sleeper block 1 is installed and finely adjusted in the first step to the sixth step can be used for installing the steel rail 5 and the fastener 4 on the prefabricated stand column 2 in the ninth step.
And in the fifth step, the fine adjustment of the track structure is mainly adjusted through an insulating gasket 10 at the bottom of the fastener.
The beneficial effect of this patent is as follows:
a subway prefabricated assembling column type inspection pit structure enables a lower supporting structure of a prefabricated column to meet the requirements of strength and precision through construction and fine adjustment of a short sleeper track structure; the prefabricated stand column is connected with the lower short sleeper through the connecting bolt, and finally the fastener and the steel rail are installed, so that the fully-assembled construction of the stand column type inspection pit is realized, the construction efficiency and quality are improved, the construction period is shortened, the labor intensity is reduced, and the problems of poor construction quality, low construction speed, high labor intensity and the like of the cast-in-place stand column are well solved.
The strength and durability of the lower support structure are improved by mounting the short sleepers on the lower foundation; the geometric shape and position of the short sleeper block are finely adjusted, and the geometric shape and position of the short sleeper block are reflected through the geometric shape and position of the steel rail, so that the precision of the lower supporting structure of the prefabricated stand column is ensured, and the construction precision in the whole process is improved; and because the short sleeper block is adopted, the whole cost is lower, the weight is lighter, and the transportation and the installation are convenient.
The bracket passes through connecting bolt and links to each other with the touch rail stand, supports the touch rail, and touch rail support position can be changed in a flexible way and arrange according to the actual construction condition in scene, has avoided leading to the touch rail stand installation to make mistakes and lead to demolising partial stand owing to the construction problem to bring the problem of huge work load.
Important bearing structure stand passes through the mill prefabrication and accomplishes, directly installs fixedly in the construction place and can put into use, and construction quality is good, the precision is guaranteed, simple structure, loading and unloading are convenient, maneuverability is strong, can improve construction speed greatly, practices thrift construction cost, avoids the wasting of resources, has still strengthened whole aesthetic property.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (7)
1. The utility model provides a subway prefabrication assembly column inspection hole structure which characterized in that: the steel rail inspection pit comprises short rail sleeper blocks, prefabricated stand columns and fasteners, wherein the prefabricated stand columns are arranged at intervals along the extension direction of a steel rail, and the short rail sleeper blocks are filled in foundation pits on two sides of the inspection pit;
the steel rail fastening device is characterized in that an upper supporting steel plate and a lower supporting steel plate are welded at two ends of the prefabricated stand column respectively, the lower supporting steel plate is connected with the short rail sleeper block through bolts, the upper supporting steel plate is connected with the fasteners through bolts, and hasps used for fastening steel rails are arranged on the fasteners.
2. A subway prefabrication and assembly column inspection pit structure according to claim 1, characterized in that: the cross section of the prefabricated upright post is in a cross shape.
3. A subway prefabrication and assembly column inspection pit structure according to claim 1, characterized in that: the short sleeper block is of a concrete structure with the length of 400mm, the length of 400mm and the height of 200 mm.
4. A subway prefabrication and assembly column inspection pit structure according to claim 1, characterized in that: the inner side of the short sleeper block is provided with a concrete protective layer, and vertical steel bars and transverse steel bars are arranged in the concrete protective layer.
5. A subway prefabrication and assembly column inspection pit structure according to claim 1, characterized in that: the structure is still including perpendicular the bracket that rail extending direction arranged, the bracket is prefabricated concrete structure, the bracket with the lateral wall of prefabricated stand passes through bolted connection, the top welding of bracket has the steel sheet that is used for supporting the rail.
6. A subway prefabrication and assembly column inspection pit structure according to claim 1, characterized in that: an insulating gasket is arranged between the fastener and the supporting steel plate, and a connecting hole for the bolt to penetrate through is formed in the insulating gasket.
7. A subway prefabrication and assembly column inspection pit structure according to claim 1, characterized in that: and four connecting holes are formed in the short sleeper block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067218.6U CN212867045U (en) | 2020-06-11 | 2020-06-11 | Subway prefabricated assembly column type inspection pit structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021067218.6U CN212867045U (en) | 2020-06-11 | 2020-06-11 | Subway prefabricated assembly column type inspection pit structure |
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| CN212867045U true CN212867045U (en) | 2021-04-02 |
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| CN202021067218.6U Active CN212867045U (en) | 2020-06-11 | 2020-06-11 | Subway prefabricated assembly column type inspection pit structure |
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