Bridge type high formwork structure for ramp over TOD fire lane
By adopting a bridge -type high -end model structure in the subway project of the TOD community, the traditional construction method is solved to block the problem of subway operations and cannot be embedded and fixed, and the stable slope is erected and the high -loading capacity. Ensure that construction and fire vehicles are connected.
Patent Information
- Application Number
- CN202420735959.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-10
AI Technical Summary
In the subway overlay project in the TOD community, ramps need to be set up on the fire lane, but traditional construction methods will block subway operations and cannot be pre-buried and fixed, affecting the existing structure.
It adopts a bridge-type high formwork structure, including a steel platform and a high formwork frame. Through the combination of steel columns, long steel plate bases, sand cushions, I-beams and wooden pads, a stable raft foundation and high load-bearing capacity are formed. The steel platform meets the needs of construction vehicles and fire-fighting vehicles.
It achieves the effective erection of ramps without destroying the existing structure, ensures normal subway operations, meets the basic bearing capacity required for construction, and ensures the smooth flow of construction vehicles and fire-fighting vehicles.
Smart Images
Figure CN222391005U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, and in particular relates to a bridge-type high-support formwork structure for a ramp above a TOD fire truck lane. Background Art
[0002] TOD means: "Public Transportation Oriented Development". Public transportation mainly refers to rail transit such as railway stations, airports, subways, light rails and bus trunk lines. Then, a central square or city center is established with a radius of 400 to 800 meters (5 to 10 minutes' walk) with bus stops as the center. Its characteristics are "mixed use" that integrates work, business, culture, education, and residence, so that residents and employees can conveniently choose a variety of travel modes such as public transportation, bicycles, and walking without rejecting cars. Urban reconstruction plots, infill plots and newly developed land can all be built with the concept of TOD. The main method of TOD is to coordinate the contradiction between traffic congestion and insufficient land generated in the process of urban development through land use and transportation policies.
[0003] With the acceleration of urbanization, TOD communities have been established in many cities, with subway over-cover projects being the most prominent. Most subway over-cover projects involve building a commercial housing project on the subway station operation depot. A fire lane is set up around the operation depot as a guarantee for the later fire route, and the ramp of the commercial housing project on top needs to be built on the fire lane before it can be opened to traffic. Moreover, the over-cover projects are often constructed after the subway station operation depot has been delivered for operation. Neither pre-buried measures can be reserved in advance, nor can existing structures be damaged. If the traditional method of setting up a full-frame formwork to construct a car ramp at the fire lane is used, the operation of the relevant vehicles of the subway will be blocked, which will have a great impact on the entire subway operation depot. Utility Model Content
[0004] The utility model provides a bridge-type high-support formwork structure for a ramp above a TOD fire lane, which can effectively solve the above-mentioned problem.
[0005] The utility model is achieved in this way:
[0006] A bridge-type high-support formwork structure for a ramp above a TOD fire lane, the bridge-type high-support formwork structure comprising a steel platform and a high-support formwork frame body, the steel platform being located inside the high-support formwork frame body, and the steel platform comprising:
[0007] A steel column, wherein the bottom of the steel column is welded to a long steel plate base, an upper cross bar and a lower cross bar are arranged on the side of the steel column in parallel and at intervals, a scissors brace is arranged between the upper cross bar and the lower cross bar, a longitudinal I-beam is arranged on the top of the steel column, and a transverse I-beam is arranged on the longitudinal I-beam.
[0008] As a further improvement, a sand cushion layer with a thickness of 30 mm is laid on the bottom of the long steel plate base.
[0009] As a further improvement, the steel columns are provided in a plurality of groups, and the plurality of steel columns are arranged in parallel and obliquely, that is, the plurality of steel columns and the transverse I-beam are overall presenting a rhombohedral structure.
[0010] As a further improvement, a wooden pad is provided on the top of the steel platform, and a wooden pad is also provided on the bottom of the high-support formwork body.
[0011] As a further improvement, the steel column is provided with an upper support and a lower support at a position 30 cm away from the top and the bottom thereof, respectively, the upper support is used to support the upper cross bar, and the lower support is used to support the lower cross bar.
[0012] As a further improvement, a platform steel plate is provided above the transverse I-beam, and the contact surfaces between the platform steel plate and the transverse I-beam are reinforced by spot welding.
[0013] The beneficial effects of the utility model are:
[0014] 1. The raft foundation is composed of a long steel plate base at the bottom of the steel column and a sand cushion layer underneath it. The raft foundation does not need to be fixed by pre-buried parts reserved by the original structure. This approach solves the problem that the formed fire lane cannot be pre-buried and ensures the stability of the diamond-shaped steel platform steel column.
[0015] 2. The steel column is integrally connected and fixed by arranging upper and lower cross bars on the sides thereof, and the integrity of the steel column is strengthened by arranging a scissor brace between the upper and lower cross bars, thereby ensuring the lateral rigidity of the steel column.
[0016] 3. By setting a through I-beam longitudinal beam on the top of the steel column as the main beam of the platform, I-beam cross beams are evenly arranged on the main beams on both sides of the steel platform as secondary beams to jointly bear the load from the upper part, thereby improving the overall bearing capacity of the steel platform.
[0017] 4. A gate-shaped opening with a net height of at least 6m and a net width of at least 4.5m is formed by the transverse I-beam and the steel columns on both sides of the steel platform, which can meet the smooth entry and exit of all construction vehicles and fire trucks.
[0018] 5. By arranging a diamond-shaped platform steel plate on the top of the steel platform, a rhombus-shaped steel platform structure is formed following the range of the ramp formwork, so that the space utilization rate of the high-support formwork body located on the steel platform is maximized.
[0019] 6. By arranging wooden pads at the bottom of the high-support formwork and the top of the diamond-shaped steel platform, the load on the uprights of the high-support formwork is evenly distributed on the platform through the wooden pads, which greatly improves the bearing capacity of the steel platform and meets the basic bearing capacity required for the construction of the ramp high-support formwork. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0022] Figure 2 It is a schematic diagram of the overall structure of the steel platform in the utility model.
[0023] Reference numerals:
[0024] 1- platform steel plate, 2- transverse I-beam, 3- longitudinal I-beam, 4- upper support, 5- upper cross bar, 6- steel column, 7- scissors support, 8- lower cross bar, 9- lower support, 10- long steel plate base, 11- sand cushion layer, 12- wooden pad, 13- high support formwork body. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0026] In the description of the present invention, the terms "upper", "lower", "above", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0027] Reference Figure 1-2 As shown, this embodiment provides a bridge-type high-support formwork structure for a ramp above a TOD fire lane, the bridge-type high-support formwork structure comprising a steel platform and a high-support formwork frame body, the steel platform is located inside the high-support formwork frame body, and the steel platform comprises:
[0028] A steel column 6, the bottom of which is welded to a long steel plate base 10, an upper cross bar 5 and a lower cross bar 8 are arranged parallel and spaced apart on the side of the steel column 6, a scissors brace 7 is arranged between the upper cross bar 5 and the lower cross bar 8, a longitudinal I-beam 3 is arranged on the top of the steel column 6, and a transverse I-beam 2 is arranged on the longitudinal I-beam 3.
[0029] The upper cross bar 5 and the lower cross bar 8 are arranged on the side of the steel column 6 for integral connection and fixation, and the integrity of the steel column 6 is strengthened by the scissor brace 7 arranged between the upper cross bar 5 and the lower cross bar 8, thereby ensuring the lateral rigidity of the steel column 6.
[0030] Furthermore, a sand cushion layer 11 with a thickness of 30 mm is laid on the bottom of the long steel plate base 10 .
[0031] A raft foundation is formed by a long steel plate base 10 arranged at the bottom of the steel column 6 and a sand cushion layer 11 thereunder. The raft foundation does not need to be fixed by pre-reserved embedded parts of the original structure. This approach solves the problem that the formed fire lane cannot be pre-embedded, ensures the stability of the steel column 6 of the steel platform, and by laying the sand cushion layer 11, it plays a role in leveling the original fire lane road surface, ensuring the flatness of the foundation structure.
[0032] Furthermore, the steel columns 6 are provided in a plurality of groups, and the plurality of steel columns 6 are arranged in parallel and obliquely, that is, the plurality of steel columns 6 and the transverse I-beam 2 form a rhombohedral structure as a whole.
[0033] By arranging a platform steel plate 1 on the top of the steel platform, a rhombohedral steel platform structure is formed following the range of the ramp formwork, so that the space utilization rate of the high-support formwork body 13 located on the steel platform is maximized.
[0034] Furthermore, a wooden pad 12 is provided on the top of the steel platform, and a wooden pad 12 is also provided on the bottom of the high-support formwork body 13 .
[0035] By arranging wooden pads 12 at the bottom of the high-support formwork body 13 and the top of the diamond-shaped steel platform, the load on the uprights of the high-support formwork body 13 is evenly distributed on the platform through the wooden pads 12, which greatly improves the bearing capacity of the steel platform and meets the basic bearing capacity required for the construction of the ramp high-support formwork body 13.
[0036] Furthermore, the steel column 6 is provided with an upper support 4 and a lower support 9 at a position 30 cm away from the top and the bottom thereof, respectively. The upper support 4 is used to support the upper cross bar 5 , and the lower support 9 is used to support the lower cross bar 8 .
[0037] By providing the upper support 4 and the lower support 9, support and positioning are provided for the upper cross bar 5 and the lower cross bar 8, thereby facilitating the welding process of the upper cross bar 5 and the lower cross bar 8.
[0038] Furthermore, a platform steel plate 1 is disposed above the transverse I-beam 2 , and the contact surfaces between the platform steel plate 1 and the transverse I-beam 2 are both reinforced by spot welding.
[0039] The construction steps of this embodiment include the following steps:
[0040] S1. Drawings for cutting: First, compare the drawings under the cover with the drawings on the cover. After the comparison, review the components built on site and confirm the empty positions. Then, after the on-site review, use the drawings to pre-design the plane of the steel platform. In order to facilitate the driving of subway construction vehicles below, the net height of the steel platform is at least 6m and the net width is at least 4.5m. Secondly, in order to maximize the space utilization, the steel platform is a diamond quadrilateral structure. After the design is completed, three-dimensional modeling and force analysis are carried out. Finally, cut the materials according to the model, issue a list of components and produce them in the factory;
[0041] S2, measurement and layout: after locating the steel platform position on the drawing, the surveyor will derive the coordinates according to the column position shown in the drawing, and then use RTK to lead the point to the cover plate, and then change the total station to measure and lay out the line through the RTK reference point. After locating the steel column 6, use the ink fountain to set a 1m axis on its outside, and then lay out. After the axis of the steel column 6 on both sides of the steel platform is released, the boundary line of the long steel plate base 10 is set with the ink fountain. The boundary line is used for the foundation setting of the steel platform;
[0042] S3, basic setting: first, evenly lay a 30mm thick sand cushion layer 11 within the boundary line of the long steel plate base 10, and then hoist the long steel plate base 10 to the measurement and setting out position;
[0043] S4, installation of steel columns 6: after the marking of the foundation steel plate is completed, the steel columns 6 are hoisted, and each of the steel columns 6 needs to be fully welded with the foundation steel plate after hoisting. After the welding of the steel columns 6 is completed, an upper support 4 and a lower support 9 are respectively arranged above the steel columns 6 at a position 30 cm from the top and 30 cm from the bottom. Steel pipes are arranged on the upper support 4 and the lower support 9, and the steel pipes penetrate several of the steel columns 6. Finally, the steel pipes on the upper support 4 and the steel pipes on the lower support 9 are connected by scissor braces 7, so that the several steel columns 6 are all connected as one, thereby ensuring the stability of the steel columns 6;
[0044] S5, installation of longitudinal and transverse beams: a longitudinal I-beam 3 is arranged on the top of the steel column 6, and the contact surface between the longitudinal I-beam 3 and the top of the steel column 6 is fully welded, and then after the longitudinal I-beam 3 is arranged, the position of each transverse I-beam 2 is marked with chalk on the top of the longitudinal I-beam 3, and after the marking is completed, the transverse I-beam 2 is hoisted to the marked position, and finally the contact surface between the transverse I-beam 2 and the longitudinal I-beam 3 is fully welded;
[0045] S6. Installation of platform steel plate 1: first hoist the platform steel plate 1 to the top of the I-beam, and then after the platform steel plate 1 is hoisted, weld a 10 cm weld every 50 cm at the joint position between the platform steel plate 1 and the I-beam, that is, spot weld each contact surface between the platform steel plate 1 and the I-beam, so as to ensure that the platform steel plate 1 is firm and reliable;
[0046] S7, erection of high-support formwork frame 13: set up cross-hole scaffolding around the steel platform as the operation frame of the high-support formwork, and set a wooden pad 12 at the bottom of each high-support formwork pole to increase the force-bearing area of the steel column 6;
[0047] S8. Concrete pouring: During the concrete pouring process, special personnel must be arranged to conduct inspections and traffic diversion under the steel platform and observe the frame condition of the steel platform at any time.
[0048] Furthermore, the S3 is specifically:
[0049] S301, evenly lay a sand cushion layer 11 with a thickness of 30 mm within the boundary line of the long steel plate base 10;
[0050] S302, erect a 25T tower crane outside the fire lane, and use a lifting clamp to hoist the long steel plate base 10 outside the site in a horizontal hoisting manner. When hoisting, first hoist it to 100 mm above the ground to check its hoisting stability, then slowly raise it and gradually hoist it to the measurement and layout position;
[0051] S303, when approaching the boundary line of the long steel plate base 10, two operators position and adjust the long steel plate base 10 and then slowly move it downward to ensure the accuracy of the installation position of the long steel plate base 10;
[0052] S304, after the hoisting is completed, the flatness of the long steel plate base 10 is checked by a level ruler and some adjustments are made to the long steel plate base 10.
[0053] Furthermore, the S6 is specifically:
[0054] S601, first hoist the platform steel plate 1 to the top of the I-beam, after the preliminary hoisting of the platform steel plate 1 is completed, remove the special clamp to the end position of the steel plate and hoist it again, and then adjust the position of the platform steel plate 1;
[0055] S602, after the platform steel plate 1 is hoisted, a 10 cm weld is welded every 50 cm at the joint position between the platform steel plate 1 and the I-beam, that is, each contact surface between the platform steel plate 1 and the I-beam is spot welded, thereby ensuring that the platform steel plate 1 is firm and reliable;
[0056] S603. Finally, after the hoisting is completed, the steel plate 1 of the suspended platform outside the I-beam needs to be cut off to prevent people from stepping into the air.
[0057] Through the above-mentioned construction method, it is possible to ensure the passage of the subway fire lane during the construction process without destroying the existing structure.
[0058] Beneficial effects of this embodiment: The raft foundation formed by the long steel plate base 10 and the sand cushion layer 11 below the steel column 6 does not need to be fixed by the pre-buried parts reserved in the original structure. This method solves the problem that the formed fire lane cannot be pre-buried, and ensures the stability of the diamond steel platform steel column 6. The upper crossbar 5 and the lower crossbar 8 are arranged on the side of the steel column 6 for overall connection and fixation, and the scissor brace 7 is arranged between the upper crossbar 5 and the lower crossbar 8 to strengthen the integrity of the steel column 6, thereby ensuring the lateral rigidity of the steel column 6. The I-beam longitudinal beam is arranged at the top of the steel column 6 as the main beam of the platform, and the I-beam cross beams are evenly arranged on the main beams on both sides of the steel platform as secondary beams to jointly bear the load from the upper part, thereby improving the overall bearing capacity of the steel platform. The transverse I-beam 2 and the steel columns 6 on both sides of the steel platform form a door-shaped opening with a net height of at least 6m and a net width of at least 4.5m, thereby meeting the smooth entry and exit of all construction vehicles and fire trucks. By arranging a diamond-shaped platform steel plate 1 on the top of the steel platform, a rhombohedral steel platform structure is formed following the range of the ramp formwork, so that the space utilization rate of the high-support formwork body 13 located on the steel platform is maximized. By arranging a wooden pad 12 at the bottom of the high-support formwork body 13 and the top of the diamond-shaped steel platform, the load on the uprights of the high-support formwork body 13 is evenly distributed on the platform through the wooden pad 12, which greatly improves the bearing capacity of the steel platform and meets the basic bearing capacity required for the construction of the ramp high-support formwork body 13.
[0059] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A bridge-type high-support formwork structure for a ramp above a TOD fire lane, characterized in that: The bridge-type high-support formwork structure includes a steel platform and a high-support formwork frame body, wherein the steel platform is located inside the high-support formwork frame body, and the steel platform includes: A steel column, wherein the bottom of the steel column is welded to a long steel plate base, an upper cross bar and a lower cross bar are arranged on the side of the steel column in parallel and at intervals, a scissors brace is arranged between the upper cross bar and the lower cross bar, a longitudinal I-beam is arranged on the top of the steel column, and a transverse I-beam is arranged on the longitudinal I-beam.
2. The bridge-type high formwork structure for the ramp above the TOD fire lane according to claim 1 is characterized in that: The bottom of the long steel plate base is paved with a sand cushion layer with a thickness of 30 mm.
3. The bridge-type high-support formwork structure for the ramp above the TOD fire lane according to claim 1 is characterized in that: The steel columns are arranged in a plurality of groups, and the plurality of steel columns are arranged in parallel and obliquely, that is, the plurality of steel columns and the transverse I-beam are in a rhombohedral structure as a whole.
4. The bridge-type high formwork structure for the ramp above the TOD fire lane according to claim 1 is characterized in that: A wooden pad is arranged on the top of the steel platform, and a wooden pad is also arranged on the bottom of the high-support formwork body.
5. The bridge-type high formwork structure for the ramp above the TOD fire lane according to claim 1 is characterized in that: The steel column is provided with an upper support and a lower support at a position 30 cm away from the top and the bottom thereof, respectively. The upper support is used to support the upper cross bar, and the lower support is used to support the lower cross bar.
6. The bridge-type high-support formwork structure for the ramp above the TOD fire lane according to claim 1 is characterized in that: A platform steel plate is arranged above the transverse I-beam, and the contact surfaces of the platform steel plate and the transverse I-beam are both reinforced by spot welding.