CN213740635U - Single-row support structure for cantilever casting continuous beam zero section construction - Google Patents

Abstract

The utility model relates to a single-row supporting structure that is used for cantilever casting continuous beam No. zero section to be under construction, fix on the cushion cap and through the single steel pipe stand of company wall channel steel and pier shaft fixed including panel, stiffening rib, slope frame, main longitudinal beam, main beam and lower part, connect through the first channel-section steel that the level set up between the adjacent steel pipe stand, the top welding of steel pipe stand has the bond beam, and the bond beam still has the bracing that plays the reinforcement with the steel pipe stand, and the main beam welding that a plurality of parallel intervals set up is at the top of bond beam, main longitudinal beam one end is fixed with pier shaft top, and the other end passes through the bar sand box and is fixed with the main beam, main longitudinal beam still is equipped with little sand box with pier shaft top, and the top of main longitudinal beam is equipped with the back pressure roof beam, the height-adjusting frame is fixed on the main longitudinal beam, stiffening rib and panel are fixed in proper order on the height-adjusting frame. The utility model discloses reduce construction cost for the construction progress, and safe controllable, occupation space is little.

Description

Single-row support structure for cantilever casting continuous beam zero section construction

Technical Field

The utility model belongs to the technical field of the building engineering support technique and specifically relates to a single-row supporting structure that is used for cantilever casting continuous beam zero number section to be under construction is related to.

Background

The cast-in-place cantilever continuous beam is widely applied to railway bridge engineering spanning pipelines, lines and rivers, and the cast of the 0# section is usually constructed by a full-framing method and a double-row-framing method, wherein when the structural size of the bearing platform is smaller than the outline size of a beam part structure, the full-framing method needs to carry out foundation treatment on a support range beyond the bearing platform part, but the problem of uneven settlement of the foundation and the top surface of the bearing platform is easily solved; the double-row support method has the advantages of more material consumption, high cost, high requirements of the inclined leg support on parameters of the support section of the steel pipe buttress and the inclined leg, high construction difficulty, higher safety risk and high material cost, and influences the normal operation of traffic under the beam.

Disclosure of Invention

In order to solve the technical problem, an object of the utility model is to provide a single-row supporting structure that is used for cantilever to pour continuous beam zero section construction, this support construction convenience, speed piece, and have characteristics safe, saving.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

the utility model provides a single-row supporting structure for cantilever casting continuous beam zero number section construction, fixes on the cushion cap and through the single steel pipe column of company's wall channel steel and pier shaft fixed including panel, stiffening rib, slope frame, main longitudinal beam, main beam and lower part, is connected through the first channel-section steel that the level set up between the adjacent steel pipe column, the top welding of steel pipe column has the conjugate beam, and conjugate beam and steel pipe column still weld have the bracing that plays the reinforcement, and the welding of the main beam of a plurality of parallel intervals sets up is at the top of conjugate beam, main longitudinal beam one end is fixed with the pier shaft top, and the other end passes through the bar sand box and is fixed with the main beam, main longitudinal beam still is equipped with little sand box with the pier shaft top, and the top of main longitudinal beam is equipped with the back pressure roof beam, still be fixed with the height-adjusting frame on the main longitudinal beam, stiffening rib and panel are fixed in proper order on the height-adjusting frame.

According to the preferable scheme, strip-shaped steel plates with bottom provided with inverted V-shaped steel bars are pre-buried in the bearing platform, single-row steel pipe columns are arranged at intervals, the bottoms of the steel pipe columns are respectively welded with the strip-shaped steel plates, and stiffening plates are further arranged between the steel pipe columns and the steel plates.

As the preferred scheme, the strip-shaped sand boxes are connected with the main cross beam and the main longitudinal beam in a welding mode, and the center positions of the strip-shaped sand boxes are overlapped with the center line of the main cross beam.

As the preferred scheme, the pier body is pre-buried to be provided with finish rolling deformed steel bar and connector, is provided with two nuts on the finish rolling deformed steel bar, links wall channel steel one end and is equipped with the connecting plate, finish rolling deformed steel bar through connection steel plate just fastens it through the nut.

As a preferred scheme, the panel is made of bamboo plywood, and the stiffening ribs are made of square wood; or the panel is made of steel plates, and the stiffening ribs are made of channel steel.

Preferably, a cross brace for enhancing the connection strength is arranged between the adjacent steel pipe columns.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the construction cost is reduced. The steel pipe stand all stands on the cushion cap, need not to handle the support and surpass the ground outside the cushion cap, and can save 2 rows of steel pipes for double support method, greatly reduced construction cost. (2) And safety and controllability are realized. The steel pipe stand all stands on the cushion cap, has avoided the risk that support topples and collapses that the uneven settlement of double frame inside and outside steel pipe arouses. (3) And the construction progress is accelerated. Compared with a double-row support method and a full support method, the single-row support erection method is small in workload, fast and efficient. (4) The quality is reliable. The welding of the inclined strut, the wall connecting channel steel, the combination beam and the like is carried out on the ground, so that the welding quality is effectively guaranteed, and meanwhile, the risk caused by high-altitude welding is avoided. (5) The occupied space is saved. The lower parts of the single-row support steel pipe columns do not need to occupy a vehicle passing area outside the bearing platform, and the conditions that traffic under the beam is not affected and the vehicle normally passes are effectively guaranteed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic side view of the present invention;

fig. 2 is a schematic view of the cross-section layout structure of the present invention.

Wherein the reference numerals are: 1. a stiffening rib; 2. heightening; 3. a main stringer; 4. a counter-pressure beam; 5. a small sand box; 6. a bar-shaped sand box; 7. a main cross beam; 8. a bond beam; 9. bracing; 10. a steel pipe upright post; 11. wall connecting channel steel; 12. a pier body; 13. a strip-shaped steel plate; 14. a steel bar shaped like a Chinese character 'ji'; 15. a bearing platform; 16. and (4) supporting the scissors.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, elements, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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, should not be construed as limiting the present invention.

Furthermore, 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, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The invention will be further explained with reference to the following embodiments and drawings:

as shown in fig. 1 and 2, this embodiment provides a single-row supporting structure for cantilever casting continuous beam No. zero section construction, including panel, stiffening rib, slope frame, main longitudinal 3, main beam 7 and lower part fix on cushion cap 15 and through the single steel pipe stand 10 of wall channel steel 11 with pier shaft 12 is fixed, pier shaft 12 is pre-buried to be provided with finish rolling screw-thread steel and connector, is provided with two nuts on the finish rolling screw-thread steel, and 11 one end of wall channel steel are equipped with connecting steel plate, finish rolling screw-thread steel runs through connecting steel plate and fastens it through the nut.

The adjacent steel pipe columns 10 are connected in parallel and welded into a whole through first channel steel arranged horizontally, and a cross brace 16 used for enhancing the connection strength is further arranged between the adjacent steel pipe columns 10.

The welding of steel pipe stand 10's top has bond beam 8, and bond beam 8 and steel pipe stand 10 still weld have the bracing 9 that plays the reinforcement effect, and the welding of the main beam 7 of a plurality of parallel interval settings is at the top of bond beam 8, the main beam adopts two roof trusses I-steel, 3 one end of main longeron is fixed with pier shaft 12 top, and the other end passes through bar sand box 6 and fixes with main beam 7, main longeron 3 still is equipped with little sand box 5 with pier shaft 12 top, and the top of main longeron 3 is equipped with back pressure roof beam 4, it fixes on main longeron 3 to transfer high frame 2, stiffening rib 1 and panel are fixed in proper order on transferring high frame.

The steel tube pile is characterized in that strip steel plates 13 with bottom portions provided with inverted U-shaped steel bars 14 are pre-buried in the bearing platform 15, a row of spiral steel tube stand columns with the diameter of 630mm and the wall thickness of 9mm are welded on the strip steel plates 13, the steel tube stand columns 10 are arranged at intervals, and stiffening plates are further arranged between the steel tube stand columns 10 and the steel plates.

The strip-shaped sand box 6 is connected with the main cross beam 7 and the main longitudinal beam 3 in a welding mode, and the center position of the strip-shaped sand box 6 is overlapped with the center line of the main cross beam 7. The panel is made of bamboo plywood, and the stiffening ribs are made of square wood; or the panel is made of steel plates, and the stiffening ribs are made of channel steel.

The utility model discloses a construction mode as follows

(1) Embedding strip steel plate in bearing platform

The pre-buried strip steel sheet that is provided with area "nearly" style of calligraphy reinforcing bar of cushion cap during construction, before the support installation, clearance cushion cap and strip steel sheet surface are carried out the laying-out by survey crew, and the china ink line pops out the steel pipe stand central line, ensures that steel pipe stand installation and design position are accurate. The inverted V-shaped steel bars and the strip-shaped steel plates are fully welded and are fixedly connected with the bearing platform steel bars through spot welding, and the strip-shaped steel plates are installed flatly to ensure that the steel pipe upright posts are installed vertically.

(2) Steel pipe column installation

According to the height of the top surface of the bearing platform and a support design drawing, the blanking height of the steel tube stand column is calculated in advance, the stand column adopts a spiral welded tube with the diameter phi of 630mm and the wall thickness of 9mm, the blanking height of the stand column is calculated according to the design height, and the notch is polished to be smooth. In order to enhance the welding quality of the steel pipe upright post and the strip steel plate pre-embedded in the bearing platform, a stiffening plate is arranged between the steel pipe upright post and the strip steel plate. The steel pipe stand installation adopts artifical cooperation crane installation, and on-the-spot root-by-root erection welding, steel pipe stand and pre-buried strip steel sheet, steel pipe stand and top mouth steel sheet are connected the face and are contacted completely and full-length welding (the joint is put up the steel sheet welding), and steel pipe stand top surface cross bridge is to on same height, ensures the installation quality of steel pipe stand top surface crossbeam. After the installation of the steel pipe stand column is completed, the steel pipe support column is connected into a whole by adopting the first channel steel, the stability of the steel pipe support column is enhanced, and the steel pipe support column is connected with the first channel steel by adopting a steel plate.

(3) Diagonal bracing

In order to ensure the welding quality of the support diagonal brace, the diagonal brace welding work is carried out in advance, blanking is carried out according to design drawings, the diagonal brace welding is carried out on the flat ground, and the welding seam quality meets the requirements of specifications and schemes. The welding quality of the wall connecting channel steel and the steel tube stand column is ensured, when the construction requirements cannot be met, steel plate welding is additionally arranged, the finish-rolled deformed steel bar is arranged by adopting double nuts, and the exposed length meets the standard requirements.

(4) Wall connecting piece installation

When the pier body is constructed, finish rolling screw-thread steel, a steel plate and a connector are pre-buried in advance, and after the pier body is constructed, the mounting position of an embedded part of the wall connecting part is accurate.

(5) Mounting of combination beam and main cross beam

The combination beam is composed of 2 or more I-beams, the combination beam is connected with the inclined strut and the steel tube upright post in a welding mode, and in order to ensure welding quality, welding work is completed on the site in advance. The main beam is made of double H-shaped steel beams, the main beam is connected with the combination beam in a welding mode, and the installation position of the main beam is strictly controlled to ensure the stability of the support.

(6) Installation of bar-shaped sand box and small sand box

The bar-shaped sand box and the small sand box have enough bearing capacity, the center position of the bar-shaped sand box coincides with the center line of the main cross beam, and the bar-shaped sand box, the main cross beam and the main longitudinal beam are all connected in a welding mode for avoiding displacement of the bar-shaped sand box in the construction process. In order to ensure that the frame falling is convenient and the sand box has enough bearing capacity, the sand for the sand box adopts refined quartz sand, and before the bar-shaped sand box is used, the height of the sand box is set in advance according to the elevation requirement.

(7) Main stringer mounting

The main longitudinal beam is composed of two or 3I-steel beams and is distributed according to the load of the upper structure. In order to prevent the main longitudinal beam from sliding, the main longitudinal beam is connected with the sand box in a welding mode, one end of the main longitudinal beam is arranged on the strip-shaped sand box, the other end of the main longitudinal beam is arranged at the top of the pier body, the length of the top of the pier body meets the stress requirement, and the installation position of the main longitudinal beam is strictly executed according to a design scheme.

(8) Longitudinal beam counter-pressure measure installation

The longitudinal beam back pressure measure is composed of pre-buried finish rolling deformed steel bars and back pressure beams, the finish rolling deformed steel bars are pre-buried during pier body construction, after the main longitudinal beam is installed, the back pressure beams are installed on the main longitudinal beam, the double nuts are fastened, the main longitudinal beam is limited to generate forward-bridge displacement through the fastening force generated by the double nuts, and the use safety of the support is ensured. The embedded depth of the finish-rolled deformed steel bar meets the requirement, and the finish-rolled nut is fastened in place.

(9) Machining and mounting of slope frame

The slope frame is manufactured on the site in advance, the components are connected in a welding mode, and the slope frame is installed through integral hoisting. In order to prevent the displacement of the slope frame, the slope frame is connected with the main longitudinal beam in a welding mode.

(10) Stiffener and panel mounting

The stiffening ribs are transversely arranged and adopt channel steel or square timber. When the channel steel is adopted, the panel is made of a steel plate, and the channel steel and the slope frame are connected by electric welding at two ends of the bottom web plate for limiting; when square wood is adopted, the panel adopts a bamboo plywood, and related measures are taken at the two ends of the bottom web for limiting.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and that any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (6)

1. A single-row support structure for cantilever casting continuous beam zero section construction is characterized by comprising a panel, stiffening ribs, a gradient frame, a main longitudinal beam (3), a main cross beam (7) and single-row steel tube upright columns (10) of which the lower parts are fixed on a bearing platform (15) and are fixed with a pier body (12) through wall connecting channel steel (11), wherein adjacent steel tube upright columns (10) are connected through first channel steel which is horizontally arranged, a combination beam (8) is welded at the top of each steel tube upright column (10), inclined struts (9) which play a reinforcing role are further welded on the combination beam (8) and the steel tube upright columns (10), a plurality of main cross beams (7) which are arranged in parallel at intervals are welded at the top of the combination beam (8), one end of the main longitudinal beam (3) is fixed with the top of the pier body (12), the other end of the main longitudinal beam is fixed with the main cross beam (7) through a strip-shaped sand box (6), and small sand boxes (5) are further arranged at the tops of the main longitudinal beam (3) and the pier body (12), and the top of the main longitudinal beam (3) is provided with a counter-pressure beam (4), the main longitudinal beam (3) is further fixed with an elevation adjusting frame (2), and the stiffening ribs (1) and the panels are sequentially fixed on the elevation adjusting frame.

2. The single-row support structure for the zero-number section construction of the cast-in-place cantilever beam according to claim 1 is characterized in that strip steel plates (13) with bottom portions provided with inverted U-shaped steel bars (14) are pre-buried in the bearing platform (15), single-row steel pipe columns (10) are arranged at intervals, the bottoms of the steel pipe columns (10) are respectively welded with the strip steel plates (13), and stiffening plates are further arranged between the steel pipe columns (10) and the steel plates.

3. The single-row bracket structure for the zero-number section construction of the cast-in-place cantilever beam according to claim 1, wherein the strip-shaped sand box (6) is connected with the main cross beam (7) and the main longitudinal beam (3) in a welding manner, and the center position of the strip-shaped sand box (6) is coincided with the center line of the main cross beam (7).

4. The single-row support structure for the zero-number section construction of the cast-in-place cantilever beam of claim 1, wherein a finish-rolled deformed steel bar and a connector are pre-embedded in the pier body (12), a double nut is arranged on the finish-rolled deformed steel bar, a connecting steel plate is arranged at one end of the wall connecting channel steel (11), and the finish-rolled deformed steel bar penetrates through the connecting steel plate and is fastened through the nut.

5. The single-row bracket structure for the construction of the cast-in-place cantilever continuous beam No. zero section is characterized in that the panel is made of bamboo plywood, and the stiffening ribs are made of square wood; or the panel is made of steel plates, and the stiffening ribs are made of channel steel.

6. The single-row bracket structure for the zero-number section construction of the cast-in-place cantilever beam of claim 1, wherein a cross brace (16) for enhancing the connection strength is further arranged between the adjacent steel pipe columns (10).

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