Prefabricated beam steel formwork with adjustable cross slope

Abstract

The utility model discloses a prefabricated beam steel formwork with an adjustable cross slope. The prefabricated beam steel formwork comprises a steel formwork panel body, a vertical rib frame and longitudinal channel steel. The steel mould panel body consists of a panel, a rib plate, a flange, a wing plate side mould and a water stop groove; the vertical rib frame comprises a steel truss, a wing plate transverse rib, a movable hinge and a slope adjusting device; the slope adjusting device is composed of an upper base, a lower base and an adjusting rod. According to the principle that the adjusting rod adjusts the height in a positive and negative threaded mode, dip angle changes of the wing plate are achieved, the structure is simple, manufacturing cost is low, and stability and reliability are achieved. The utility model provides a steel template structure capable of considering different bridge cross slope states, so that one template has multiple purposes, the engineering quality is ensured, and the engineering cost is reduced.

Description

Technical Field

[0001] The utility model relates to a steel template, in particular to a prefabricated beam steel template with adjustable transverse slope. Background Art

[0002] In order to meet the need of drainage, bridges are generally provided with transverse slopes, which are double-sided slopes and single-sided slopes. In the prefabrication process of the bridge, the bridge wing plates have two types: upward inclination and downward inclination; and in the super-elevation gradient section, the transverse slope of the bridge is a transition of gradual changes in the up and down inclination angles. Therefore, when prefabricating the bridge, it is necessary to divide the wing plates of the prefabricated beams into three categories of upward inclination, downward inclination and transition according to the design requirements and the direction of the transverse slope, and process the steel formwork separately, which greatly increases the construction cost. In the case of a small number of prefabricated beams, the wing plates of the steel formwork were often made into flat slopes in the past, and the transverse slope of the prefabricated beam was achieved by raising or lowering the relative elevation of the steel formwork when installing the steel formwork. Although this method is simple and fast, it cannot guarantee the accuracy of the design size of the prefabricated beam, thus causing quality problems such as overweight and insufficient size of the bridge. Summary of the invention

[0003] The utility model aims to provide a prefabricated beam steel formwork which can take into account three different transverse slope states of the wing plate, namely, upward inclination, downward inclination and gradual change, and can realize multiple uses of one formwork, ensure the engineering quality and reduce the engineering cost.

[0004] The purpose of the utility model is achieved in this way:

[0005] A prefabricated beam steel formwork with adjustable transverse slope is characterized by comprising a steel formwork panel body, two vertical rib frames and a plurality of longitudinal channel steels; wherein:

[0006] The steel formwork panel body is composed of a panel, ribs, flanges, wing plate side molds and water stop grooves. A number of ribs are horizontally spaced at intervals at the bottom of the curved panel. A flange is respectively provided at both ends of the bottom edge of the panel and at both ends of the ribs. The two opposite flanges sandwich the ribs. A horizontal wing plate side mold for making the side of the precast beam wing plate is provided at the top edge of the panel. The water stop groove is provided at the top of the panel and in front of the wing plate side mold.

[0007] Each vertical rib frame includes four parts: a steel truss, a flange transverse rib, a movable hinge and a slope adjustment device; wherein: the steel truss is a "gang"-shaped structure composed of two vertical chords, two horizontal webs and a cross-shaped scissor brace, and the bottom of the steel truss is arranged on the ground; a flange transverse rib is arranged above the steel truss, the top of which is fixed under the rib of the steel formwork panel body, the bottom end of the slope adjustment device is fixed to the top of the right chord, the top of which is fixed to the bottom of the right end of the flange transverse rib, the left end of the flange transverse rib is connected to the top of the left chord through a movable hinge, and the flange transverse rib, the steel truss and the slope adjustment device form a triangular structure with adjustable flange transverse rib inclination through the movable hinge;

[0008] Two completely identical vertical rib frames are arranged side by side under the steel formwork panel body. A longitudinal channel steel is fixed between the upper and lower outer sides of two adjacent right chord bars, and a longitudinal channel steel is fixed between the upper left and right sides of two adjacent horizontal lower web bars. The function of the longitudinal channel steel is to connect the two vertical rib frames longitudinally into a whole.

[0009] The angle between the wing transverse rib and the left chord is an obtuse angle.

[0010] The panel is made of a whole piece of steel plate. The lower and middle parts of the curved panel are fixed to the outer wall of the left chord through the channel steel ribs, and the upper and middle parts of the panel are fixed to the top of the transverse ribs of the wing plate through the channel steel ribs. The ribs are composed of channel steel ribs and steel plate ribs. Except for the ribs at the bottom of the panel bending, which are steel plate ribs, the rest of the ribs at the bottom of the panel are channel steel ribs. The height of the ribs is perpendicular to the panel, and the length is placed parallel to the bridge direction. The flange is made of steel plate, the height of the flange is perpendicular to the panel, located at both ends of the ribs, and parallel to the ribs. The height is the same, the length of the flange is placed transversely, the outer edge of the flange is flush with the edge of the panel, the inner edge of the flange is vertically pressed and fixed to the end of the rib, and the flange is provided with an eight-shaped opening towards the center of the circle at the bend in the middle of the panel; the length of the wing plate side mold is the same as the panel, and the wing plate side mold is fixed to the panel with bolts; the water stop groove is fixed on the top of the panel with a small angle steel laid flat along the bridge direction, and the two limbs of the water stop groove angle steel are placed in an eight-shape, with the opening facing downward and the corner top facing upward, and the water stop groove is not more than 150mm away from the edge of the panel.

[0011] The slope adjustment device consists of three parts: an upper base, a lower base and an adjusting rod. The adjusting rod is composed of a steel pipe, a nut, and positive and negative thread screws. The bottom end of the upper base is fixed to the bottom right end of the wing plate cross rib, and the bottom end of the lower base is fixed to the top end of the right chord of the steel truss. The bottom end of the upper base is connected to the top end of the steel pipe of the adjusting rod by bolts, and the two ends of the positive and negative thread screws are respectively connected to the upper base and the lower base by threads. A horizontal small hole is provided in the middle of the positive and negative thread screws for inserting steel bars and rotating the screws to adjust the height.

[0012] The vertical rib frame is welded by double channel steel in a back-to-back manner, and the plane of the vertical rib frame is perpendicular to the length direction of the rib plate.

[0013] The left chord of the steel truss is close to the rib of the steel formwork panel body, and the right chord is vertically downward; the scissors brace is composed of 8# channel steel, arranged in a cross shape, and the two ends of the 8# channel steel are welded on the diagonal formed by the chord and the web.

[0014] The movable hinge is made of steel plate with a thickness of not less than 14mm and is installed below the bending part of the steel formwork panel body; the left side of the movable hinge is fixed to the top of the left chord of the steel truss, and the right side of the movable hinge is fixed to the left end of the wing plate cross rib; the movable hinge is recessed at the corresponding bending part of the steel formwork panel body to avoid position conflict with the wing plate cross rib at the bending part.

[0015] The specification of the positive and negative thread screw is not less than M30, the upper and lower sections are positive and negative threads, the middle section is a threadless section, and the length of the threadless section is 50mm; the horizontal small hole is set in the threadless section of the positive and negative thread screw, and the hole diameter is not less than 16mm.

[0016] The specification of the longitudinal channel steel is not less than 16#. The longitudinal channel steel on the outside of the right chord is placed vertically in the height direction with the opening facing right; the longitudinal channel steel above the horizontal lower web is placed horizontally in the height direction with the opening facing upward.

[0017] The utility model provides a steel formwork structure that can take into account different bridge transverse slope conditions, which includes a steel formwork panel body, two vertical rib frames and a plurality of longitudinal channel steels, wherein: the steel formwork panel body is composed of a panel, a rib plate, a flange, a wing plate side formwork and a water stop groove; the vertical rib frame includes a steel truss, a wing plate transverse rib, a movable hinge and a slope adjustment device; the slope adjustment device is composed of an upper base, a lower base and an adjustment rod. It uses the principle of adjusting the height by the positive and negative wires on the adjustment rod to achieve the change of the inclination angle of the wing plate.

[0018] The beneficial effects of the utility model are:

[0019] 1. The flange is broken in an eight-shaped shape outside the bend of the panel, which is conducive to the smooth implementation of the cross slope adjustment;

[0020] 2. The adjustment principle of the positive and negative wires in the slope adjustment device is used to achieve the change of the wing plate inclination angle, which has a simple structure, low cost, stability and reliability;

[0021] 3. The utility model can effectively adapt to the changing requirements of the cross slope of the bridge, achieve multi-purpose use of one mold, ensure the quality of the project, and reduce the cost of the project; when installing and dismantling the utility model, the overall movement is achieved through the L-shaped sling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the cross slope of the bridge;

[0023] Figure 2 It is a cross-sectional schematic diagram of the structure of the utility model;

[0024] Figure 3 for Figure 2 Right view of;

[0025] Figure 4 is a schematic diagram of the regulating device;

[0026] Figure 5 It is a schematic diagram of the double channel steel section of the chord, web and flange transverse rib;

[0027] In the figure: 01. Wing plate; 1. Steel formwork panel body; 11. Panel; 12. Rib plate; 121. Channel steel rib plate; 122. Steel plate rib plate; 13. Flange; 131. Figure-eight opening; 14. Wing plate side formwork; 15. Water stop groove; 2. Vertical rib frame; 21. Steel truss; 211. Chord rod; 212. Web rod; 213. Scissor brace; 22. Wing plate transverse rib; 23. Active hinge; 24. Slope adjustment device; 241. Upper base; 242. Lower base; 243. Adjustment rod; 243a. Steel pipe; 243b. Nut; 243c. Positive and negative thread screw; 243d. Small hole; 244. Bolt; 3. Longitudinal channel steel. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0029] A prefabricated beam steel formwork with adjustable transverse slope comprises a steel formwork panel body 1, two vertical rib frames 2 and a plurality of longitudinal channel steels 3; wherein:

[0030] The steel formwork panel body 1 is composed of a panel 11, ribs 12, flanges 13, wing plate side molds 14 and water stop grooves 15. A plurality of ribs 12 are horizontally spaced at intervals at the bottom of the arc-shaped panel 11. A flange 13 is respectively provided at both ends of the bottom edge of the panel 11 and at both ends of the plurality of ribs 12. The two opposite flanges 13 sandwich the plurality of ribs 12. A horizontal wing plate side mold 14 for making the side of the precast beam wing plate 01 is provided at the top edge of the panel 11. The water stop groove 15 is provided at the top of the panel 11 and in front of the wing plate side mold 14.

[0031] Each vertical rib frame 2 includes four parts: a steel truss 21, a flange transverse rib 22, a movable hinge 23 and a slope adjustment device 24; wherein: the steel truss 21 is a "gang"-shaped structure composed of two vertical chords 211, two horizontal webs 212 and a cross-shaped scissors brace 213, and the bottom of the steel truss 21 is arranged on the ground; a flange transverse rib 22 is arranged above the steel truss 21, and the top of the flange transverse rib 22 is fixed under the rib 12 of the steel formwork panel body 1, the bottom end of the slope adjustment device 24 is fixed to the top of the right chord 211, and the top of the slope adjustment device 24 is fixed to the bottom of the right end of the flange transverse rib 22, and the left end of the flange transverse rib 22 is connected to the top of the left chord 211 through a movable hinge 23, and the flange transverse rib 22, the steel truss 21, and the slope adjustment device 24 form a triangular structure with an adjustable inclination angle of the flange transverse rib 22 through the movable hinge 23;

[0032] Two completely identical vertical rib frames 2 are arranged side by side under the steel formwork panel body 1, and a longitudinal channel steel 3 is fixed between the upper and lower outer sides of two adjacent right chord rods 211, and a longitudinal channel steel 3 is fixed between the upper left and right sides of two adjacent horizontal lower web rods 212. The function of the longitudinal channel steel 3 is to connect the two vertical rib frames 2 longitudinally into a whole.

[0033] The included angle between the wing plate transverse rib 22 and the left chord rod 211 is an obtuse angle.

[0034] The panel 11 is formed by bending a whole steel plate. The lower middle part of the curved panel 11 is fixed to the outer side wall of the left chord 211 through a channel steel rib 121, and the upper middle part of the panel 11 is fixed to the top of the flange transverse rib 22 through the channel steel rib 121. The rib 12 is composed of a channel steel rib 121 and a steel plate rib 122. Except for the rib 12 at the bottom of the panel 11, which is made of steel plate rib 122, the remaining ribs 12 at the bottom of the panel 11 are all made of channel steel rib 121. The height of the rib 12 is perpendicular to the panel 11, and the length is placed parallel to the bridge direction. The flange 13 is made of steel plate, and the height of the flange 13 is perpendicular to the panel 11 and is located at the rib 12. The flange 13 has two ends and is the same height as the rib 12. The length of the flange 13 is placed in the transverse direction. The outer edge of the flange 13 is flush with the edge of the panel 11, and the inner edge of the flange 13 is vertically pressed and fixed to the end of the rib 12. The flange 13 is provided with an eight-shaped opening 131 at the bend in the middle of the panel 11 towards the center of the circle; the length of the wing plate side mold 14 is the same as that of the panel 11, and the wing plate side mold 14 is fixed to the panel 11 with bolts; the water stop groove 15 is fixed on the top of the panel 11 with a small angle steel laid flat along the bridge direction, and the two limbs of the angle steel of the water stop groove 15 are placed in an eight-shaped shape, with the opening facing downward and the corner top facing upward. The distance between the water stop groove 15 and the edge of the panel 11 is not more than 150mm.

[0035] The slope adjustment device 24 consists of three parts: an upper base 241, a lower base 242 and an adjusting rod 243. The adjusting rod 243 consists of a steel pipe 243a, a nut 243b, and a positive and negative thread screw 243c. The bottom end of the upper base 241 is fixed to the bottom of the right end of the wing plate cross rib 22, and the bottom end of the lower base 242 is fixed to the top of the right chord 211 of the steel truss 21. The bottom end of the upper base 241 is connected to the top of the steel pipe 243a of the adjusting rod 243 by a bolt 244. The two ends of the positive and negative thread screw 243c are respectively connected to the upper base 241 and the lower base 242 by a threaded manner. A horizontal small hole 243d is provided in the middle of the positive and negative thread screw 243c for inserting a steel bar to rotate the screw 243c and adjusting the height.

[0036] The vertical rib frame 2 is formed by welding double channel steels in a back-to-back manner, and the plane of the vertical rib frame 2 is perpendicular to the length direction of the rib plate 12 .

[0037] The left chord 211 of the steel truss 21 is close to the rib 12 of the steel formwork panel body 1, and the right chord 211 is vertically downward; the scissors brace 213 is composed of 8# channel steel and arranged in a cross shape. The two ends of the 8# channel steel are respectively welded on the diagonal formed by the chord 211 and the web 212.

[0038] The movable hinge 23 is made of a steel plate with a thickness of not less than 14 mm and is installed below the bending part of the steel formwork panel body 1; the left side of the movable hinge 23 is fixed to the top of the left chord 211 of the steel truss 21, and the right side of the movable hinge 23 is fixed to the left end of the wing plate cross rib 22; the movable hinge 23 is recessed at the corresponding bending part of the steel formwork panel body 1 to avoid position conflict with the wing plate cross rib 22 at the bending part.

[0039] The specification of the positive and negative thread screw 243c is not less than M30, the upper and lower sections are positive and negative threads, the middle section is a threadless section, and the length of the threadless section is 50mm; the horizontal small hole 243d is set in the threadless section of the positive and negative thread screw 243c, and the hole diameter is not less than 16mm.

[0040] The specification of the longitudinal channel steel 3 is not less than 16#. The longitudinal channel steel 3 outside the right chord 211 is placed vertically in the height direction with the opening facing right; the longitudinal channel steel 3 above the horizontal lower web 212 is placed horizontally in the height direction with the opening facing upward.

Claims

1. A prefabricated beam steel formwork with adjustable cross slope, characterized in that: It includes a steel formwork panel body, two vertical rib frames and a number of longitudinal channel steels; among which: The steel formwork panel body is composed of a panel, ribs, flanges, wing plate side molds and water stop grooves. A plurality of ribs are horizontally spaced at intervals at the bottom of the curved panel. A flange is respectively provided at both ends of the bottom edge of the panel and at both ends of the plurality of ribs. The two opposite flanges sandwich the plurality of ribs. A horizontal wing plate side mold for making the side of the precast beam wing plate is provided at the top edge of the panel. The water stop groove is provided at the top of the panel and in front of the wing plate side mold. Each vertical rib frame includes four parts: steel truss, flange transverse rib, movable hinge and slope adjustment device; wherein: the steel truss is a "gang" shaped structure composed of 2 vertical chords, 2 horizontal webs and cross-shaped scissors braces, and the bottom of the steel truss is set on the ground; flange transverse ribs are arranged above the steel truss, and the top of the flange transverse ribs is fixed under the ribs of the steel formwork panel body, the bottom end of the slope adjustment device is fixed to the top of the right chord, and the top of the slope adjustment device is fixed to the bottom of the right end of the flange transverse rib, and the left end of the flange transverse rib is connected to the top of the left chord through a movable hinge, and the flange transverse rib, steel truss and slope adjustment device form a triangular structure with adjustable flange transverse rib inclination through the movable hinge; Two completely identical vertical rib frames are arranged side by side under the steel formwork panel body. A longitudinal channel steel is fixed between the upper and lower outer sides of two adjacent right chord bars, and a longitudinal channel steel is fixed between the upper left and right sides of two adjacent horizontal lower web bars. The longitudinal channel steels connect the two vertical rib frames longitudinally into a whole.

2. The slope-adjustable prefabricated beam steel formwork according to claim 1 is characterized in that: The slope adjustment device consists of three parts: an upper base, a lower base and an adjusting rod. The adjusting rod is composed of a steel pipe, a nut, and positive and negative thread screws. The bottom end of the upper base is fixed to the bottom right end of the wing plate cross rib, and the bottom end of the lower base is fixed to the top end of the right chord of the steel truss. The bottom end of the upper base is connected to the top end of the steel pipe of the adjusting rod by bolts, and the two ends of the positive and negative thread screws are respectively connected to the upper base and the lower base by threads. A horizontal small hole is provided in the middle of the positive and negative thread screws for inserting steel bars and rotating the screws to adjust the height.

3. The slope-adjustable prefabricated beam steel formwork according to claim 2 is characterized in that: The specification of the positive and negative thread screw is not less than M30, the upper and lower sections are positive and negative threads, the middle section is a threadless section, and the length of the threadless section is 50mm; the horizontal small hole is set in the threadless section of the positive and negative thread screw, and the hole diameter is not less than 16mm.

4. The slope-adjustable prefabricated beam steel formwork according to claim 1 is characterized in that: The panel is made of a whole piece of steel plate. The lower and middle parts of the curved panel are fixed to the outer wall of the left chord through the channel steel ribs, and the upper and middle parts of the panel are fixed to the top of the transverse ribs of the wing plate through the channel steel ribs. The ribs are composed of channel steel ribs and steel plate ribs. Except for the ribs at the bottom of the panel bending, which are steel plate ribs, the rest of the ribs at the bottom of the panel are channel steel ribs. The height of the ribs is perpendicular to the panel, and the length is placed parallel to the bridge direction. The flange is made of steel plate, the height of the flange is perpendicular to the panel, located at both ends of the ribs, and parallel to the ribs. The height is the same, the length of the flange is placed transversely, the outer edge of the flange is flush with the edge of the panel, the inner edge of the flange is vertically pressed and fixed to the end of the rib, and the flange is provided with an eight-shaped opening towards the center of the circle at the bend in the middle of the panel; the length of the wing plate side mold is the same as the panel, and the wing plate side mold is fixed to the panel with bolts; the water stop groove is fixed on the top of the panel with a small angle steel laid flat along the bridge direction, and the two limbs of the water stop groove angle steel are placed in an eight-shape, with the opening facing downward and the corner top facing upward, and the water stop groove is not more than 150mm away from the edge of the panel.

5. The slope-adjustable prefabricated beam steel formwork according to claim 1 is characterized in that: The movable hinge is made of steel plate with a thickness of not less than 14mm and is installed below the bending part of the steel formwork panel body; the left side of the movable hinge is fixed to the top of the left chord of the steel truss, and the right side of the movable hinge is fixed to the left end of the wing panel cross rib.

6. The slope-adjustable prefabricated beam steel formwork according to claim 1 is characterized in that: The vertical rib frame is welded by double channel steel in a back-to-back manner, and the plane is perpendicular to the length direction of the rib plate.

7. The slope-adjustable prefabricated beam steel formwork according to claim 1 is characterized in that: The angle between the wing transverse rib and the left chord is an obtuse angle.

8. The slope-adjustable prefabricated beam steel formwork according to claim 1 is characterized in that: The left chord of the steel truss is close to the rib of the steel formwork panel body, and the right chord is vertically downward; the scissors brace is composed of [8# channel steel, arranged in a cross shape, and the two ends of the 8# channel steel are welded on the diagonal formed by the chord and the web.

9. The slope-adjustable prefabricated beam steel formwork according to claim 1, characterized in that: The specification of the longitudinal channel steel is not less than 16#. The longitudinal channel steel on the outside of the right chord is placed vertically in the height direction with the opening facing right; the longitudinal channel steel above the horizontal lower web is placed horizontally in the height direction with the opening facing upward.

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