A kind of non-bracket suspended slipform construction device and method

Abstract

The present invention discloses a non-support suspended slipform construction device and method, wherein the track can be connected to the station middle plate, the support platform system is in an L-shaped shape, one side of the support platform system is connected to the track through a travel mechanism that can drive the support platform system to move along the track, the rolling support can be connected to the station side wall, the other side of the support platform system is arranged on the rolling support, the first steel template and the second steel template are arranged on the inner side of the support platform system, the first steel template is connected to one side of the support platform system through a first telescopic device, and the second steel template is connected to the other side of the support platform system through a second telescopic device. The present invention can solve the problem that the existing method cannot perform horizontal and vertical cross construction with shields, platform plates, track laying, etc., can avoid complex construction organization, can also reduce the safety risks in cross construction, and can also reduce the risk of construction delays and idle work.

Description

Technical Field

[0001] The invention relates to the technical field of subway station construction, and in particular to a support-free suspended slipform construction device and method. Background Art

[0002] During the construction of the main structure of the subway station, due to the time lag in issuing construction drawings, many constraints on the one-time pouring of the middle plate structure and complex processes, the rail-top air ducts of the subway station are often constructed as secondary structures in the station using the post-casting method, that is, the middle plate structure is first cast and the joint steel bars are reserved, and the specified air ducts are constructed after the main structure is completed. The current post-casting method for the construction of the rail-top air duct usually adopts the full-chamber bracket method. Due to the small space under the rail-top air duct, the construction of the rail-top air duct will not be able to form an intersection with the shield construction, platform slab construction and track laying construction, which greatly increases the risk of subsequent major node delays. Although there is currently a construction optimization process using the hanging formwork method, the erection of the formwork, horizontal and longitudinal beams, and primary and secondary ribs of the hanging formwork method still requires the erection of temporary construction scaffolding, which still has a certain impact on the shield, platform slab and track laying. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a bracket-free suspended slipform construction device and method. The present invention can solve the problem that the existing method makes it impossible to carry out horizontal and vertical cross-construction of the rail top air duct and the shield, platform plate, track laying, etc.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A support-free suspended slipform construction device comprises a support platform system, a first steel formwork, a second steel formwork, a rolling bearing and a track, wherein the track can be connected to a station center plate, the support platform system is L-shaped, one side of the support platform system is connected to the track via a travel mechanism that can drive the support platform system to move along the track, the rolling bearing can be connected to a station side wall, the other side of the support platform system is arranged on the rolling bearing, the first steel formwork and the second steel formwork are arranged on the inner side of the support platform system, the first steel formwork is connected to one side of the support platform system via a first telescopic device, and the second steel formwork is connected to the other side of the support platform system via a second telescopic device.

[0006] Preferably, the track is detachably connected with an embedded steel plate, which is embedded in the station center plate.

[0007] Preferably, the support platform system includes two planar steel frames, and the two planar steel frames are vertically connected.

[0008] Preferably, the travel mechanism includes a pulley block and a motor, the pulley block includes a pulley and a pulley mounting seat, the pulley is mounted on the pulley mounting seat, the pulley is arranged on the track, and the output shaft of the motor is connected to the rotating shaft of the pulley.

[0009] Preferably, the track is a steel rail, the pulley mounting seat is a U-shaped mounting seat, the pulley is arranged on the inner side of the pulley mounting seat wing edge, the distance between the pulley mounting seat wing edges is greater than the width of the lower flange of the steel rail, the lower flange of the steel rail extends into the interior of the pulley mounting seat opening, the pulley is arranged on the upper part of the lower flange of the steel rail, and the bottom surface of the pulley mounting seat is connected to the top of one side of the support platform system.

[0010] Preferably, the rolling support includes a support frame and a roller, the support frame can be connected to the side wall of the station, and the roller is arranged on the top of the support frame and contacts with the support platform system.

[0011] Preferably, the shape of the first steel template is adapted to the bottom shape of the outer surface of the rail top air duct contour line, and the shape of the second steel template is adapted to the side shape of the outer surface of the rail top air duct contour line.

[0012] Preferably, both the first telescopic device and the second telescopic device adopt jacks.

[0013] The present invention also provides a non-bracket suspended slipform construction method, which is carried out by using the non-bracket suspended slipform construction device described in the present invention, and includes the following process:

[0014] Connect the track to the station middle plate, connect the rolling bearing to the station side wall, connect one side of the support platform system to the track through a travel mechanism, and set the other side of the support platform system on the rolling bearing;

[0015] The first steel template and the second steel template are controlled to move by the first telescopic device and the second telescopic device respectively, so that the first steel template is moved to a position corresponding to the bottom surface of the outer surface of the rail top air duct contour line, and the second steel template is moved to a position on the side surface of the outer surface of the rail top air duct contour line. The first steel template and the second steel template serve as outer templates for the bottom surface and the side surface of the outer surface of the rail top air duct contour line respectively;

[0016] The rail top air duct is constructed and formed. After the rail top air duct maintenance is completed, the end template and the inner template of the rail top air duct are removed, and the first steel template and the second steel template are controlled to separate from the surface of the rail top air duct by the first telescopic device and the second telescopic device respectively;

[0017] The support platform system is driven by the traveling mechanism to move to the next construction position to construct the next section of the rail top air duct.

[0018] Preferably, during the reinforcement binding stage of the station middle plate, an embedded steel plate is connected to the reinforcement of the station middle plate, the embedded steel plate is exposed on the surface of the station middle plate, and when the track is connected to the station middle plate, the track and the embedded steel plate are detachably connected.

[0019] The present invention has the following beneficial effects:

[0020] In the support-free suspended slipform construction device of the present invention, one side of the support platform system is connected to the track by a traveling mechanism that can drive the support platform system to move along the track, so that the support platform system can move, ensuring that the track top air duct can be constructed continuously; by setting a rolling support, the support platform system can be supported to ensure the position of the support platform system, and the support platform system can be rolled forward when moving, thereby reducing the movement resistance of the support platform system and ensuring the smooth movement of the support platform system; by setting a first steel template, a second steel template and a first and second telescopic devices, the first telescopic device and the second telescopic device can respectively control the movement of the first steel template and the second steel template, so that the first steel template moves to the contour of the track top air duct. The second steel template is moved to a position corresponding to the bottom surface of the outer surface of the rail top air duct contour line, and the first steel template and the second steel template are respectively used as the outer templates of the bottom and side surfaces of the outer surface of the rail top air duct contour line. The templates are both reusable and stable, ensuring the safety of the rail top air duct construction. When the support-free suspended slipform construction device of the present invention is in use, the entire device can be set at the entire top corner position of the station using rails and rolling supports, and occupies a small space, which solves the problem that the existing method makes it impossible to carry out horizontal and vertical cross-construction of the rail top air duct construction and shield, platform slabs, track laying, etc., avoids complicated construction organization, and reduces safety risks in cross-construction, and also reduces the risk of construction delays and idle work. Description of the drawings

[0021] FIG. 1 (a) is a perspective schematic diagram of a suspension type slipform construction device without a support according to the present invention; FIG. 1 (b) is a side view of a suspension type slipform construction device without a support according to the present invention;

[0022] Figure 2 It is an exploded schematic diagram of the support-free suspended slipform construction device of the present invention;

[0023] Figure 3 is a schematic diagram of a support platform system of the present invention;

[0024] Figure 4 A detailed diagram of the pulley block and the motor used in the present invention;

[0025] Figure 5 It is a schematic diagram of the template system of the present invention;

[0026] Figure 6 It is a plan view of the track system unit of the present invention;

[0027] Figure 7 It is an exploded view of the track system unit of the present invention;

[0028] FIG8 (a) is a first detailed view of a track system unit component of the present invention; FIG8 (b) is a second detailed view of a track system unit component of the present invention;

[0029] Fig. 9 This is a schematic diagram of the rolling support seat of the present invention;

[0030] FIG. 10 (a) is a diagram showing the relative position relationship between the non-bracket suspended slipform construction device of the present invention and the rail top air duct type 1; FIG. 10 (b) is a diagram showing the relative position relationship between the non-bracket suspended slipform construction device of the present invention and the rail top air duct type 2;

[0031] Fig.11 It is a flow chart of the support-free suspended slipform construction method of the present invention;

[0032] Fig.12 It is a schematic diagram of the support-free suspended slipform construction device of the present invention when it starts to move during construction;

[0033] Fig.13 It is a schematic diagram of the support-free suspended slipform construction device of the present invention during the moving process during construction;

[0034] Fig.14 It is a schematic diagram of the support-free suspended slipform construction device of the present invention after the movement is completed during construction.

[0035] Among them: 1 bracket platform system, 1-1 main bracket, 1-2 pulley block, 1-3 motor, 2 formwork system, 2-1 first steel formwork, 2-2 jack, 2-3 second steel formwork, 3 track system unit, 3-1 embedded steel plate, 3-2 steel pad, 3-3 spring bar, 3-4 bolt, 3-5 rail, 4 rolling bearing, 4-1 support frame, 4-2 roller, 5 horizontal and longitudinal beams, 6 station center plate, 7 station side wall, 8 track top air duct contour line. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] Refer to Figure 1 (a), Figure 1 (b), Figure 2 , Figure 3 , Figure 10 (a), Figure 10 (b), Figure 12 to Figure 14The present invention provides a support-free suspended slipform construction device, comprising a support platform system, a first steel formwork 2-1, a second steel formwork 2-3, a rolling bearing 4 and a track, wherein the track can be connected to a station middle plate 6, the support platform system is L-shaped, one side of the support platform system is connected to the track via a travel mechanism that can drive the support platform system to move along the track, the rolling bearing 4 can be connected to a station side wall 7, the other side of the support platform system is arranged on the rolling bearing 4, the first steel formwork 2-1 and the second steel formwork 2-3 are arranged on the inner side of the support platform system, the first steel formwork 2-1 is connected to one side of the support platform system via a first telescopic device, and the second steel formwork 2-3 is connected to the other side of the support platform system via a second telescopic device.

[0038] As a preferred embodiment of the present invention, referring to FIG. 1 (a), FIG. 1 (b), Figure 2 , Figure 3 , Figure 6 , Figure 7 , Figure 8 (a), Figure 8 (b), Figure 10 (a), Figure 10 (b), Figure 12 to Figure 14 The track is detachably connected with an embedded steel plate 3-1, which is embedded in the station middle plate 6.

[0039] As a preferred embodiment of the present invention, referring to FIG. 1 (a), FIG. 1 (b), Figure 2 , Figure 3 10(a) and 10(b), the support platform system includes two planar steel frames, and the two planar steel frames are vertically connected.

[0040] As a preferred embodiment of the present invention, refer to Figure 3 , Figure 4 The travel mechanism includes a pulley block 1-2 and a motor 1-3. The pulley block 1-2 includes a pulley and a pulley mounting seat. The pulley is mounted on the pulley mounting seat. The pulley is set on the track. The output shaft of the motor 1-3 is connected to the rotating shaft of the pulley.

[0041] As a preferred embodiment of the present invention, referring to FIG. 1 (a), FIG. 1 (b), Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 (a), Figure 10 (a), Figure 10 (b), Figure 12 to Figure 14 The track adopts a steel rail 5, and the pulley mounting seat is a U-shaped mounting seat. The pulley is arranged on the inner side of the wing edge of the pulley mounting seat. The distance between the wing edges of the pulley mounting seat is greater than the width of the lower flange of the steel rail 5. The lower flange of the steel rail 5 extends into the interior of the pulley mounting seat opening. The pulley is arranged on the upper part of the lower flange of the steel rail 5, and the bottom surface of the pulley mounting seat is connected to the top of one side of the bracket platform system.

[0042] As a preferred embodiment of the present invention, referring to FIG. 1 (a), FIG. 1 (b), Figure 2 , Fig. 9 , Figure 10 (a), Figure 10 (b), Figure 12 to Figure 14 The rolling support 4 includes a support frame 4-1 and a roller 4-2. The support frame 4-1 can be connected to the station side wall 7. The roller 4-2 is arranged on the top of the support frame 4-1 and contacts with the support platform system.

[0043] As a preferred embodiment of the present invention, referring to Figures 10(a) and 10(b), the shape of the first steel template 2-1 is adapted to the bottom shape of the outer surface of the rail top air duct contour line 8, and the shape of the second steel template 2-3 is adapted to the side shape of the outer surface of the rail top air duct contour line 8.

[0044] As a preferred embodiment of the present invention, referring to FIG. 10( a ) and FIG. 10 ( b ), both the first telescopic device and the second telescopic device use a jack 2 - 2 .

[0045] Reference Figure 11-Figure 14 The construction method of the rail top air duct using the bracket-free suspended slipform construction device of the present invention includes the following steps:

[0046] Connect the track to the station middle plate 6, connect the rolling support 4 to the station side wall 7, connect one side of the support platform system to the track through a travel mechanism, and set the other side of the support platform system on the rolling support 4;

[0047] The first steel template 2-1 and the second steel template 2-3 are controlled to move by the first telescopic device and the second telescopic device respectively, so that the first steel template 2-1 moves to a position corresponding to the bottom surface of the outer surface of the rail top air duct contour line 8, and the second steel template 2-3 moves to a position on the side surface of the outer surface of the rail top air duct contour line 8. The first steel template 2-1 and the second steel template 2-3 serve as outer templates for the bottom surface and the side surface of the outer surface of the rail top air duct contour line 8 respectively;

[0048] The rail top air duct is constructed and formed. After the rail top air duct maintenance is completed, the end template and the inner template of the rail top air duct are removed, and the first steel template 2-1 and the second steel template 2-3 are respectively controlled to be separated from the surface of the rail top air duct by the first telescopic device and the second telescopic device;

[0049] The support platform system is driven by the traveling mechanism to move to the next construction position to construct the next section of the rail top air duct.

[0050] As a preferred embodiment of the present invention, referring to FIG. 1 (a), FIG. 1 (b), Figure 2 , Figure 6 , Figure 7 , Figure 8 (a), Figure 8 (b), Figure 10 (a), Figure 10 (b), Figure 12 to Figure 14 During the steel bar binding stage of the station middle plate 6, the embedded steel plate 3-1 is connected to the steel bar of the station middle plate 6, and the embedded steel plate 3-1 is exposed on the surface of the station middle plate 6. When the track is connected to the station middle plate 6, the track and the embedded steel plate 3-1 are detachably connected.

[0051] Example

[0052] The present embodiment of the non-bracket suspended slipform construction device is shown in FIG. 1 (a), FIG. 1 (b), Figure 2 As shown, the non-support suspended slipform construction device includes a support platform system 1, a template system 2, a track system unit 3, and a rolling support 4. Figure 3 , Figure 4 As shown, the support platform system 1 includes a main support 1-1, a pulley block 1-2, and a motor 1-3. The pulley block 1-2 is bolted to the main support 1-1, so that the main support 1-1 can be suspended under the track system unit 3 and slide. The motor 1-3 is located at the front end of the pulley block 1-2, which can realize the movement of the support platform system 1 and the template system 2. Figure 5 As shown, the template system 2 includes a steel template and a jack 2-2, wherein the base of the jack 2-2 is fixed to the corresponding position of the main support 1-1, and the top of the jack 2-2 is welded to the steel template, and the template can be limited, lifted and adjusted by the jacking and contraction of the jack. Figure 6 , Figure 7 As shown in Figure 8 (a) and Figure 8 (b), the track system unit 3 includes an embedded steel plate 3-1, a steel base plate 3-2, spring bars 3-3, bolts 3-4, and a steel rail 3-5, wherein the embedded steel plate 3-1 is embedded in advance when the middle plate reinforcement is tied, and the steel rail 3-5 is fixed by tightening the steel base plate 3-2 and spring bars 3-3, and the connection between the steel rail and the embedded steel plate 3-1 is achieved by bolts 3-4. Fig. 9 As shown, the rolling bearing 4 is effectively connected to the structural side wall through expansion bolts, and the rigid roller above the bearing can rotate to realize the forward rolling of the sliding form system. As shown in Figures 10 (a) and 10 (b), the relative position relationship diagrams of the suspended sliding form device and the rail top air duct are shown. When the rail top air duct structure is as shown in Figure 10 (b), the main support 1-1 needs to add transverse and longitudinal beams 5, and the base of the jack 2-2 is fixed at the corresponding position of the transverse and longitudinal beams 5, and the top of the jack 2-2 is welded to the steel template.

[0053] Refer to 11- Fig.14 The specific operation steps of the support-free suspended slipform construction device of this embodiment when in use include:

[0054] (1) Embedded steel plate: During the middle plate reinforcement binding stage, the embedded steel plate is placed in the corresponding position and ensure that the bolt holes of the steel plate are not contaminated during concrete pouring.

[0055] (2) Lifting and assembly of the suspended slipform device: After the working surface of the station rail top air duct construction area is ready, the suspended slipform device will be hoisted into the construction working surface through the shield hoisting shaft, and the assembly of each system will be completed.

[0056] (3) Installation of track system units and rolling bearings: While assembling the device, set up a temporary bracket to put the track system units in place, and drill holes at the corresponding positions of the side walls to install the rolling bearings.

[0057] (4) Suspended slipform device is suspended in place: the device is suspended in place by multiple people through the hand winch.

[0058] (5) Suspended slipform device formwork is put in place, steel bars are tied, and concrete is poured: After the suspended slipform device is in place, the steel formwork is adjusted and put in place, the stop strips are installed, and steel bars are tied. After completion, the inner formwork and end formwork are installed, and concrete is poured and cured.

[0059] (6) Formwork removal: After the concrete reaches the required strength, the end formwork and inner formwork are removed in turn, the oil on the jack is loosened, and the steel formwork is returned to its original position.

[0060] (7) Travel of suspended sliding formwork device: Figure 11~Figure 13 As shown, the suspended slipform device moves slowly. After the rear track system unit is completely separated from the pulley block, the suspended slipform device stops moving, and the rear track system unit is simultaneously removed and manually installed on the embedded steel plate in front of the device. At the same time, the rear rolling support is removed and installed at the corresponding position in front of the device. This cycle is repeated to achieve the moving of the device into place.

[0061] (8) Construction of the suspended slipform device is completed and removed: After multiple cycles of steps (5) to (7), the rail-top air duct construction is completed. At this time, a hand winch is used to hoist the device down to the bottom of the rail-top air duct, and after removal, it is hoisted out from the shield hoisting shaft.

[0062] From the above, it can be seen that the present invention can solve the problem that the existing methods cause the shield, platform plate, track laying, etc. to be unable to carry out horizontal and vertical cross construction, can avoid complicated construction organization, and can also reduce the safety risks in cross construction, and can also reduce the risk of construction delays and idle work.

Claims

1. A non-bracket suspended slipform construction method, characterized in that: The construction method adopts a non-support suspended slipform construction device, which comprises a support platform system, a first steel template (2-1), a second steel template (2-3), a rolling support (4) and a track, wherein the track can be connected to a station middle plate (6), the support platform system is L-shaped, one side of the support platform system is connected to the track via a travel mechanism capable of driving the support platform system to move along the track, the rolling support (4) can be connected to a station side wall (7), the other side of the support platform system is arranged on the rolling support (4), the first steel template (2-1) and the second steel template (2-3) are arranged on the inner side of the support platform system, the first steel template (2-1) is connected to one side of the support platform system via a first telescopic device, and the second steel template (2-3) is connected to the other side of the support platform system via a second telescopic device; The method includes the following steps: Connecting the track to the station middle plate (6), connecting the rolling support (4) to the station side wall (7), connecting one side of the support platform system to the track via a travel mechanism, and placing the other side of the support platform system on the rolling support (4); The first steel template (2-1) and the second steel template (2-3) are controlled to move by means of the first telescopic device and the second telescopic device, respectively, so that the first steel template (2-1) moves to a position corresponding to the bottom surface of the outer surface of the rail top air duct contour line (8), and the second steel template (2-3) moves to a position corresponding to the side surface of the outer surface of the rail top air duct contour line (8), and the first steel template (2-1) and the second steel template (2-3) serve as outer templates for the bottom surface and the side surface of the outer surface of the rail top air duct contour line (8), respectively; The rail top air duct is constructed and formed, and after the rail top air duct maintenance is completed, the end template and the inner template of the rail top air duct are removed, and the first steel template (2-1) and the second steel template (2-3) are respectively controlled to be separated from the surface of the rail top air duct by a first telescopic device and a second telescopic device; The support platform system is driven by the traveling mechanism to move to the next construction position to construct the next section of the rail top air duct.

2. A non-bracket suspended slipform construction method according to claim 1, characterized in that: During the steel bar binding stage of the station middle plate (6), the embedded steel plate (3-1) is connected to the steel bars of the station middle plate (6), and the embedded steel plate (3-1) is exposed on the surface of the station middle plate (6). When the track is connected to the station middle plate (6), the track and the embedded steel plate (3-1) are detachably connected.

3. A non-support suspended slipform construction method according to claim 1, characterized in that: The track is detachably connected with an embedded steel plate (3-1), which is embedded in the station middle plate (6).

4. The method for suspended sliding formwork construction without support according to claim 1, characterized in that: The support platform system includes two flat steel frames, which are vertically connected.

5. The method for suspended sliding formwork construction without support according to claim 1, characterized in that: The travel mechanism comprises a pulley block (1-2) and a motor (1-3); the pulley block (1-2) comprises a pulley and a pulley mounting seat; the pulley is mounted on the pulley mounting seat; the pulley is arranged on a track; and the output shaft of the motor (1-3) is connected to the rotating shaft of the pulley.

6. A non-support suspended slipform construction method according to claim 5, characterized in that: The track adopts a steel rail (5), the pulley mounting seat is a U-shaped mounting seat, the pulley is arranged on the inner side of the pulley mounting seat wing edge, the distance between the pulley mounting seat wing edges is greater than the width of the lower flange of the steel rail (5), the lower flange of the steel rail (5) extends into the inside of the pulley mounting seat opening, the pulley is arranged on the upper part of the lower flange of the steel rail (5), and the bottom surface of the pulley mounting seat is connected to the top of one side of the support platform system.

7. The method for suspended sliding formwork construction without support according to claim 1, characterized in that: The rolling support (4) comprises a support frame (4-1) and a roller (4-2); the support frame (4-1) can be connected to a station side wall (7); and the roller (4-2) is arranged on the top of the support frame (4-1) and in contact with the support platform system.

8. The method for suspended sliding formwork construction without support according to claim 1, characterized in that: The shape of the first steel template (2-1) matches the bottom surface shape of the outer surface of the rail top air duct contour line (8), and the shape of the second steel template (2-3) matches the side surface shape of the outer surface of the rail top air duct contour line (8).

9. The method for suspended sliding formwork construction without support according to claim 1, characterized in that: The first telescopic device and the second telescopic device both use a jack (2-2).

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