Prefabricated T-beam web stirrup spacing control and positioning device

Abstract

The utility model discloses a prefabricated T-beam web stirrup spacing control and positioning device, which belongs to the technical field of highway engineering and comprises equilateral angle steel, a normal-section slotted toothed plate is fixed at one end of the equilateral angle steel, a transition-section slotted toothed plate is fixed at the other end of the equilateral angle steel, and the transition-section slotted toothed plate is fixed at the other end of the equilateral angle steel. A plurality of first gaps at equal intervals are formed in the normal-section slotted toothed plate, and a plurality of second gaps at equal intervals are formed in the transition-section slotted toothed plate; the device can solve the problems that after a prefabricated T-beam is hoisted to a ground tire, the spacing of stirrups has errors, the stirrups are not firmly bound and fixed, and the spacing errors are not uniform. The structure is convenient to mount and dismount, efficient, convenient and fast, the stirrup spacing qualification rate is increased, and spacing error uniformity is controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway engineering, and particularly relates to a prefabricated T-beam web stirrup spacing control and positioning device. Background Art

[0002] According to the "Highway Engineering Quality Inspection and Assessment Standard" JTG F80 / 1-2017, the allowable deviation of the same row of stress-bearing steel bars in precast T-beams is ±10mm, and the allowable deviation of the stirrup spacing is ±10mm. If the deviation of the web stirrup spacing is too large or the spacing error is uneven, it is likely to cause the steel bar spacing to not meet the specification requirements.

[0003] At present, the control of the spacing of the stirrups of prefabricated T-beams is mainly carried out by lifting the web reinforcement on a steel bar binding stand and then transporting it to the prefabricated ground tire as a whole; or directly binding the web reinforcement skeleton of the prefabricated T-beam on the ground tire. Tying the T-beam reinforcement skeleton directly on the ground tire often leads to excessive deviation in the spacing of the web stirrups and uneven spacing errors; using a steel bar binding stand to tie the web reinforcement and then transporting it to the prefabricated ground tire as a whole can control the spacing of the stirrups to a certain extent, but the stirrups will be deformed during the lifting process, and can only be adjusted manually locally before the mold is closed, which will also cause errors in the spacing of the stirrups and uneven spacing errors. Uneven spacing errors and unreliable fixation will cause the vibrator and attached vibrator to have a greater impact on it when pouring concrete. As long as the stirrups are slightly loose, the spacing between two adjacent stirrups will be unqualified. The utility model adopts slotted equilateral angle steel to provide a spacing control device after the prefabricated T-beam is hoisted to the ground tire, which can ensure that the spacing of the stirrups is controlled within the qualified range and the spacing error can also be evenly controlled. Utility Model Content

[0004] The purpose of the utility model is to provide a prefabricated T-beam web stirrup spacing control and positioning device, which can solve the problem of stirrup spacing error, unreliable stirrup binding and fixing, and uneven spacing error after the prefabricated T-beam is hoisted to the ground. The structure is easy to install and dismantle, efficient and convenient, improves the stirrup spacing qualification rate, and controls the uniformity of spacing error.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated T-beam web stirrup spacing control and positioning device, comprising an equilateral angle steel, one end of which is fixed with a normal-section slotted tooth plate, and the other end of which is fixed with a gradient-section slotted tooth plate, the normal-section slotted tooth plate is provided with a plurality of first gaps with equal spacing, and the gradient-section slotted tooth plate is provided with a plurality of second gaps with equal spacing.

[0006] In the above scheme, the first gap of the normal section slotted tooth plate is determined according to the normal section stirrup spacing and specifications of the prefabricated T-beam web stirrups to adapt to the normal section stirrup spacing control and positioning.

[0007] The second gap of the transition section slotted tooth plate is determined according to the spacing and specifications of the transition section stirrups of the precast T-beam web stirrups, so as to control and position the spacing of the transition section stirrups.

[0008] Furthermore, a handle is welded on the side of the equilateral angle steel, and the handle is symmetrically arranged about the middle part of the equilateral angle steel.

[0009] In the above scheme, the handle is made of φ12 threaded steel bars bent into a "J" shape and welded to the side of the equilateral angle steel.

[0010] The beneficial effects of the utility model are:

[0011] 1. The utility model has high rigidity, moderate weight, and is easy to carry, install and disassemble.

[0012] 2. The utility model can be adapted to the spacing control and positioning of stirrups in normal sections and gradual sections of webs.

[0013] 3. The utility model can control the qualified rate of the spacing of the prefabricated T-beam steel frame hoisted on the ground tire within the qualified range, and can control the uniformity of the spacing error, reduce the influence of the vibrating rod and the attached vibrator when pouring concrete, and reduce the displacement of the stirrups during vibration, resulting in unqualified spacing of the stirrups after construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the prefabricated T-beam web stirrup spacing control and positioning device provided by the utility model;

[0015] Figure 2 The utility model provides Figure 1 Schematic diagram from another perspective.

[0016] In the figure: 1. Equilateral angle steel; 2. Normal section slotted tooth plate; 3. Gradient section slotted tooth plate; 4. First gap; 5. Second gap; 6. Handle. DETAILED DESCRIPTION

[0017] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0018] Please also refer to Figure 1 to Figure 2 The following will describe in detail the prefabricated T-beam web stirrup spacing control and positioning device according to the embodiment of the utility model in conjunction with the accompanying drawings.

[0019] like Figure 1As shown, the prefabricated T-beam web stirrup spacing control and positioning device includes an equilateral angle steel 1, one end of which is fixed with a normal-section slotted tooth plate 2, and the other end is fixed with a gradient-section slotted tooth plate 3, the normal-section slotted tooth plate 2 is provided with a plurality of equally spaced first gaps 4, and the gradient-section slotted tooth plate 3 is provided with a plurality of equally spaced second gaps 5.

[0020] A handle 6 is welded to the side of the equilateral angle steel 1 , and the handle 6 is symmetrically arranged about the middle of the equilateral angle steel 1 .

[0021] Example

[0022] The utility model discloses a prefabricated T-beam web stirrup spacing control and positioning device which is applied to the prefabricated T-beam web stirrup spacing control and positioning control of the Feilong Bridge on the S210 Hengxian Pingma to Lingshan Shaping highway.

[0023] K18+040 Feilong Bridge has a total length of 940 meters. The starting pile number of the bridge is K17+570.000, and the end pile number is K18+510.000. The main bridge span layout: (100+185+185+100)m corrugated steel web continuous rigid frame, the main bridge is 570m long. The approach bridge span layout: Pingma side, (5×30)m first simply supported and then continuous prestressed concrete T beam, Shaping side, (7×30)m first simply supported and then continuous prestressed concrete T beam, the approach bridge is 360m long. The full width of the bridge deck is 13m. There are 6 prefabricated T beams in each span of the approach bridge, a total of 72 beams.

[0024] Steps for installing and removing the prefabricated T-beam web stirrup spacing control and positioning device of this embodiment:

[0025] The prefabricated T-beam web steel frame is hoisted onto the ground tire after being tied on the steel frame tying stand.

[0026] Lift up the two handles 6 of the prefabricated T-beam web stirrup spacing control and positioning device with both hands, align the normal section slotted tooth plate 2 for controlling and positioning the normal section stirrups with the web stirrups, and place the stirrups in the first gap 4 of the device. If some stirrups are severely deformed and cannot be normally placed in the first gap 4, gently tap the stirrups with a hammer or loosen the tying wire and place the stirrups in the first gap 4. After all of them are placed in the first gap 4, cross-tie the nearby steel bar intersections with tying wires again, so that the qualified rate of the stirrup spacing at this position is qualified and the error uniformity is consistent.

[0027] Lift the two handles 6 of the prefabricated T-beam web stirrup spacing control and positioning device with both hands, and continue to move it to the normal section web stirrups, and repeat the operation until the qualified rate of all normal section stirrup spacing meets the requirements and is securely tied.

[0028] Lift up the two handles 6 of the prefabricated T-beam web stirrup spacing control and positioning device with both hands, align the gradient section slotted tooth plate 3 for controlling and positioning the gradient section stirrups with the web stirrups, and clamp the stirrups into the second gap 5 of the device. If some stirrups are severely deformed and cannot be normally placed in the second gap 5, gently tap the stirrups with a hammer or loosen the tying wire and then clamp the stirrups in the second gap 5. After all the stirrups are placed in the second gap 5, cross-tie the nearby steel bar intersections with tying wire again, so that the qualified rate of the stirrup spacing at this position is qualified and the error uniformity is consistent.

[0029] Lift the two handles 6 of the prefabricated T-beam web stirrup spacing control and positioning device with both hands, and continue to move it to the transition section web stirrups, and repeat the operation until the qualified rate of all transition section stirrup spacing meets the requirements and is securely tied.

[0030] When the qualified rate of stirrup spacing of all normal sections and gradient sections meets the requirements, lift the two handles 6 of the prefabricated T-beam web stirrup spacing control and positioning device with both hands and place it in an open and flat place.

[0031] After removing the precast T-beam web stirrup spacing control and positioning device and removing the concrete formwork, the stirrup spacing results were tested. The test results are shown in Table 1 and Table 2:

[0032]

[0033] Table 1 Test results of stirrup spacing before mold closing of No. 11-1 30m precast T-beam of Feilong Bridge on S210 Hengxian Pingma to Lingshan Shaping Highway

[0034]

[0035] Table 2 The test results of the spacing of stirrups after the casting of the 30m precast T-beam No. 11-1 of Feilong Bridge on the S210 Hengxian Pingma to Lingshan Shaping Highway was completed and the formwork was removed

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated T-beam web stirrup spacing control and positioning device, characterized in that: The prefabricated T-beam web stirrup spacing control and positioning device comprises an equilateral angle steel (1), a normal-section slotted tooth plate (2) being fixed at one end of the equilateral angle steel (1), and a gradient-section slotted tooth plate (3) being fixed at the other end, the normal-section slotted tooth plate (2) being provided with a plurality of first gaps (4) at equal intervals, and the gradient-section slotted tooth plate (3) being provided with a plurality of second gaps (5) at equal intervals.

2. The prefabricated T-beam web stirrup spacing control and positioning device according to claim 1 is characterized in that: A handle (6) is also welded to the side of the equilateral angle steel (1), and the handle (6) is symmetrically arranged with respect to the middle of the equilateral angle steel (1).

Images