Adjustable tensioning jig frame for horizontal rib of web of prefabricated box girder

Abstract

The utility model relates to an adjustable prefabricated box girder web horizontal bar tensioning jig frame. The jig frame comprises a horizontal bar fixing tensioning end, jig frame sliding rails, a jig frame front edge fixing base and a jig frame rear edge fixing base, wherein the jig frame front edge fixing base and the jig frame rear edge fixing base are fixed to a concrete pedestal. A plurality of sets of corrugated pipe positioning holes are symmetrically formed in the horizontal rib fixing and tensioning end, and a plurality of sets of horizontal rib bundle penetrating holes are symmetrically formed in the two sides of the corrugated pipe positioning holes. Jig frame sliding wheels are arranged at the two ends of the bottom of the horizontal rib fixing and tensioning end respectively. The jig frame sliding rail is arranged on the inner side of the jig frame front edge fixing base. The jig frame sliding rails are connected with the jig frame sliding wheels in a sliding mode. The horizontal rib fixing and tensioning end is connected with the jig frame rear edge fixing base through a jig frame inclined strut. The device is simple to operate, safe and reliable, reduces the labor force of workers, improves the labor productivity, and is high in applicability and generalization.

Description

Technical Field

[0001] The utility model relates to the technical field of highway bridge construction, in particular to an adjustable prefabricated box beam web horizontal reinforcement tensioning frame. Background Art

[0002] The prefabricated box girder reinforcement tying jig is a device used to tie the steel skeleton in the prefabricated box girder. It uses the jig to control the position and spacing of the steel bars, and the inclination and verticality of the web stirrups. However, since the horizontal web reinforcement is made of coiled steel, the quality control of the spacing of the tied horizontal reinforcement is not strict.

[0003] At present, a fixed horizontal reinforcement tensioning cradle has been maturely applied. It is located at both ends of the prefabricated steel bar binding cradle to tension the horizontal reinforcement of the web. However, this cradle is time-consuming and labor-intensive, and the application effect is poor. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an adjustable prefabricated box beam web horizontal reinforcement tensioning cradle which is easy to operate, convenient to use, efficient and fast.

[0005] In order to solve the above problems, the utility model discloses an adjustable prefabricated box girder web horizontal reinforcement tensioning frame, which is characterized in that: the frame comprises a horizontal reinforcement fixed tensioning end, a frame sliding track, and a frame front edge fixed base and a frame rear edge fixed base fixed on a concrete pedestal; an array of corrugated tube positioning holes are symmetrically provided on the horizontal reinforcement fixed tensioning end, and an array of horizontal reinforcement bundle passing holes are symmetrically provided on both sides of the array of corrugated tube positioning holes; a frame sliding wheel is respectively provided at the two ends of the bottom of the horizontal reinforcement fixed tensioning end; the frame sliding track is provided on the inner side of the frame front edge fixed base; the frame sliding track is slidably connected to the frame sliding wheel; the horizontal reinforcement fixed tensioning end is connected to the frame rear edge fixed base through a frame diagonal brace.

[0006] The sizes of the horizontal reinforcement fixed tensioning end, the corrugated tube positioning hole, and the horizontal reinforcement bundle passing hole match the size of the prefabricated box girder, and the cross-section of the horizontal reinforcement fixed tensioning end is the same as the cross-section of the box girder web reinforcement.

[0007] A plurality of adjustment and fixing holes are provided on the front edge fixing base of the tire frame, and the adjustment and fixing holes are connected to the fixed tensioning end of the horizontal rib via fixing bolts I.

[0008] The center position of the front edge fixed base of the tire frame is determined by the length of the box beams of different lengths with the same section.

[0009] The distance between two adjacent adjustment and fixing holes is 10 cm.

[0010] A sliding fixing groove is provided on the fixing base at the rear edge of the tire frame, and the sliding fixing groove is connected to a steel plate arranged at the bottom of the tire frame diagonal support through a fixing bolt II.

[0011] The sliding fixing groove is located at the center of the horizontal end of the tire frame rear edge fixing base.

[0012] The front edge fixed base of the tire frame and the rear edge fixed base of the tire frame are located in the same horizontal plane as the bottom surface of the box beam web horizontal steel bar binding tire frame, and the horizontal bar bundle hole and the box beam web horizontal steel bar binding tire frame and the horizontal bar positioning rod are located in the same horizontal plane respectively.

[0013] The horizontal distance between the front edge fixing base of the tire frame and the rear edge fixing base of the tire frame is 50% of the height of the tensioning tire frame.

[0014] The length of the tire frame diagonal brace is determined by the height of the tire frame at the tensioning end of the horizontal rib fixed thereon and the horizontal distance between the tire frame front edge fixed base and the tire frame rear edge fixed base.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. Compared with the original fixed tensioning cradle, the utility model adds a base sliding track and a fixing device, which avoids the safety risks caused by the increase in labor and the unreliable fixation of the extension position caused by the insufficient length of the web horizontal reinforcement when the box girder length changes under the condition of the cradle being fixed; and the waste of materials caused by cutting when the web horizontal reinforcement is too long.

[0017] 2. The utility model is simple to operate, safe and reliable, reduces the labor force of workers, improves labor productivity, and has high applicability and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] In the figure: 1—horizontal rib fixing tensioning end; 2—corrugated pipe positioning hole; 3—horizontal rib bundle passing hole; 4—front edge fixing base of tire frame; 5—adjusting fixing hole position; 6—fixing bolt Ⅰ; 7—tire frame sliding track; 8—tire frame sliding wheel; 9—rear edge fixing base of tire frame; 10—sliding fixing groove; 11—fixing bolt Ⅱ; 12—tire frame diagonal brace. DETAILED DESCRIPTION

[0021] like Figure 1As shown, an adjustable prefabricated box girder web horizontal reinforcement tensioning cradle includes a horizontal reinforcement fixed tensioning end 1, a cradle sliding track 7, and a cradle front edge fixed base 4 and a cradle rear edge fixed base 9 fixed on a concrete pedestal.

[0022] An array of bellows positioning holes 2 are symmetrically provided on the horizontal reinforcement fixed tensioning end 1, and an array of horizontal reinforcement bundle passing holes 3 are symmetrically provided on both sides of the array of bellows positioning holes 2; tire frame sliding wheels 8 are respectively provided at the two ends of the bottom of the horizontal reinforcement fixed tensioning end 1; a tire frame sliding track 7 is provided on the inner side of the tire frame front edge fixed base 4; the tire frame sliding track 7 is slidably connected to the tire frame sliding wheel 8; the horizontal reinforcement fixed tensioning end 1 is connected to the tire frame rear edge fixed base 9 through the tire frame diagonal brace 12.

[0023] The dimensions of the horizontal reinforcement fixed tensioning end 1, the corrugated tube positioning hole 2, and the horizontal reinforcement bundle hole 3 match the dimensions of the prefabricated box girder, and the cross section of the horizontal reinforcement fixed tensioning end 1 is the same as the cross section of the box girder web reinforcement. The main processing material of the horizontal reinforcement fixed tensioning end 1 is I26.

[0024] A plurality of adjustment and fixing holes 5 are provided on the front edge fixing base 4 of the tire frame, and the adjustment and fixing holes 5 are connected to the horizontal rib fixed tensioning end 1 through fixing bolts Ⅰ6.

[0025] The center position of the front edge fixed base 4 of the tire frame is determined by the length of the box beams of different lengths with the same section.

[0026] The distance between two adjacent adjusting and fixing holes 5 is 10 cm.

[0027] A sliding fixing groove 10 is provided on the tire frame rear edge fixing base 9, and the sliding fixing groove 10 is connected to a steel plate provided at the bottom of the tire frame diagonal support 12 through a fixing bolt II 11.

[0028] The tire frame diagonal brace 12 is made of No. 5 angle steel with a side thickness of 10mm. The size of the steel plate is 100*100*10mm and is welded to the center bottom of the tire frame diagonal brace 12.

[0029] The sliding fixing groove 10 is located at the center of the horizontal end of the tire frame rear edge fixing base 9 and is formed by thermal cutting. Its width is 30 mm and its length is 90 cm.

[0030] The front edge fixing base 4 and the rear edge fixing base 9 of the tire frame are located in the same horizontal plane as the bottom surface of the box beam web horizontal reinforcement binding tire frame, and the horizontal reinforcement bundle hole 3 is located in the same horizontal plane as the box beam web horizontal reinforcement binding tire frame and the horizontal reinforcement positioning rod.

[0031] The horizontal distance between the front edge fixing base 4 of the tire frame and the rear edge fixing base 9 of the tire frame is 50% of the height of the tensioning tire frame.

[0032] The length of the front edge fixed base 4 of the tire frame and the rear edge fixed base 9 of the tire frame is 100 cm, which is the maximum value of the length change of the box beam in general production tasks. The length can also be adjusted according to changes in the beam field.

[0033] The length of the tire frame diagonal brace 12 is determined by the tire frame height of the horizontal rib fixed tensioning end 1 and the horizontal distance between the tire frame front edge fixed base 4 and the tire frame rear edge fixed base 9.

[0034] The tire frame front edge fixing base 4 and the tire frame rear edge fixing base 9 are respectively made of No. 10 angle steel, with an edge thickness of 10mm and a length of 100cm. The fixing bolts Ⅰ6 and Ⅱ11 are both M20*50.

[0035] The tire frame sliding track 7 is made of No. 4 angle steel, with a side thickness of 5mm and a length of 100cm. The diameter of the tire frame sliding wheel 8 is 6cm.

[0036] After the tire frame sliding wheel 8 is installed, ensure that the bottom surface of the horizontal rib fixed tensioning end 1 is in close contact with the horizontal plane of the tire frame front edge fixed base 4; the 100*100*10mm steel plate welded in the center of the tire frame diagonal support 12 is in close contact with the horizontal plane of the tire frame rear edge fixed base 9.

[0037] The method of using the utility model is as follows:

[0038] ⑴ Determine the beam length according to the box beam design drawing, so as to determine the shortest length of the horizontal reinforcement tyre for the web of the box beam, and process the horizontal reinforcement tyre for the web of the box beam.

[0039] (2) According to the plane position and bottom elevation of the steel bar binding tire frame, determine the installation height and plane position of the front tire frame front edge fixed base 4 and the tire frame rear edge fixed base 9, and install them.

[0040] ⑶ Determine the installation height of the tire frame sliding track 7 according to the plane and height of the tire frame front edge fixed base 4 and the size of the tire frame sliding wheel 8, and ensure that after the tire frame sliding wheel 8 is installed on the horizontal rib fixed tensioning end 1, the base of the horizontal rib fixed tensioning end 1 is in close contact with the tire frame front edge fixed base 4.

[0041] (4) Install the tire frame diagonal brace 12.

[0042] ⑸ According to the length of the horizontal reinforcement of the web, slide the device to ensure that the exposed horizontal reinforcement fixed tensioning end 1 is not less than 10cm after the horizontal reinforcement is installed, and install the fixing bolts Ⅰ6 and Ⅱ11.

[0043] ⑹Install and initially fix the box girder web reinforcement and corrugated pipe according to the design.

[0044] ⑺Use RCH-20100 tensioning equipment to tension and straighten the distribution reinforcement.

[0045] ⑻ After fixing the tensioned box girder web horizontally for the second time, unload the tensioning cylinder.

[0046] ⑼ Remove the fixing bolts Ⅰ6 and Ⅱ11, move the device out horizontally, and take out the tied and formed web reinforcement.

Claims

1. An adjustable prefabricated box girder web horizontal reinforcement tensioning cradle, characterized in that: The tire frame comprises a horizontal rib fixed tensioning end (1), a tire frame sliding track (7), and a tire frame front edge fixed base (4) and a tire frame rear edge fixed base (9) fixed on a concrete pedestal; a plurality of corrugated tube positioning holes (2) are symmetrically provided on the horizontal rib fixed tensioning end (1), and a plurality of horizontal rib bundle passing holes (3) are symmetrically provided on both sides of the plurality of corrugated tube positioning holes (2); tire frame sliding wheels (8) are respectively provided at both ends of the bottom of the horizontal rib fixed tensioning end (1); the tire frame sliding track (7) is provided on the inner side of the tire frame front edge fixed base (4); the tire frame sliding track (7) is slidably connected to the tire frame sliding wheel (8); the horizontal rib fixed tensioning end (1) is connected to the tire frame rear edge fixed base (9) via a tire frame diagonal brace (12).

2. The adjustable prefabricated box girder web horizontal reinforcement tensioning cradle according to claim 1, characterized in that: The dimensions of the horizontal reinforcement fixed tensioning end (1), the corrugated tube positioning hole (2), and the horizontal reinforcement bundle insertion hole (3) match the dimensions of the prefabricated box girder, and the cross-section of the horizontal reinforcement fixed tensioning end (1) is the same as the cross-section of the box girder web reinforcement.

3. The adjustable prefabricated box girder web horizontal reinforcement tensioning cradle according to claim 1, characterized in that: A plurality of adjustment and fixing holes (5) are provided on the front edge fixing base (4) of the tire frame. The adjustment and fixing holes (5) are connected to the horizontal rib fixed tensioning end (1) via fixing bolts I (6).

4. The adjustable prefabricated box girder web horizontal reinforcement tensioning cradle according to claim 3, characterized in that: The center position of the tire frame front edge fixed base (4) is determined by the length of box beams of different lengths with the same cross section.

5. The adjustable prefabricated box girder web horizontal reinforcement tensioning cradle according to claim 3, characterized in that: The distance between two adjacent adjustment and fixing holes (5) is 10 cm.

6. The adjustable prefabricated box girder web horizontal reinforcement tensioning jig as claimed in claim 1, characterized in that: The tire frame rear edge fixing base (9) is provided with a sliding fixing groove (10), and the sliding fixing groove (10) is connected to a steel plate provided at the bottom of the tire frame diagonal support (12) via a fixing bolt II (11).

7. An adjustable prefabricated box girder web horizontal reinforcement tensioning jig as claimed in claim 6, characterized in that: The sliding fixing groove (10) is located at the center of the horizontal end of the tire frame rear edge fixing base (9).

8. The adjustable prefabricated box girder web horizontal reinforcement tensioning jig as claimed in claim 1, characterized in that: The tire frame front edge fixing base (4) and the tire frame rear edge fixing base (9) are located at the same horizontal plane as the bottom surface of the box girder web horizontal steel bar binding tire frame, and the horizontal steel bar bundle hole (3) is located at the same horizontal plane as the box girder web horizontal steel bar binding tire frame and the horizontal steel bar positioning rod.

9. An adjustable prefabricated box girder web horizontal reinforcement tensioning jig as claimed in claim 8, characterized in that: The horizontal distance between the front edge fixing base (4) of the tire frame and the rear edge fixing base (9) of the tire frame is 50% of the height of the tensioning tire frame.

10. The adjustable prefabricated box girder web horizontal reinforcement tensioning jig as claimed in claim 1, characterized in that: The length of the tire frame diagonal brace (12) is determined by the tire frame height of the horizontal rib fixed tensioning end (1) and the horizontal distance between the tire frame front edge fixed base (4) and the tire frame rear edge fixed base (9).

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