Adjustable device for longitudinal slope of prefabricated T beam shoe of expressway

Abstract

The utility model discloses an adjustable device for a longitudinal slope of a prefabricated T-shaped beam shoe of an expressway, and relates to the technical field of T-shaped beam prefabrication, in particular to the adjustable device for the longitudinal slope of the prefabricated T-shaped beam shoe of the expressway, which comprises a concrete bottom plate, and a concrete foundation is poured on the upper surface of the concrete bottom plate. And supporting seats are fixed in the two sides of the concrete foundation. The device overcomes the defect that a traditional pedestal cannot adjust the longitudinal slope of a beam shoe, the construction process that the longitudinal slope of the beam shoe is continuously adjusted on the pedestal in advance is achieved, the slope adjusting device has the advantages of being safe and reliable in structure, high in manufacturing and assembling speed, convenient to construct and operate and capable of being repeatedly used, meanwhile, loss of a large number of auxiliary materials in a conventional method is avoided, and the construction cost is reduced. The longitudinal slope of the beam is continuously adjusted on the pedestal in advance by adjusting and controlling the adjusting assembly, the requirement for different sizes is met, meanwhile, mounting and dismounting are convenient, reutilization can be achieved, cost is greatly saved, and energy consumption and carbon emission in the highway construction process are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of T-beam prefabrication technology, specifically to an adjustable longitudinal slope device for prefabricated T-beams for highways. Background Technology

[0002] With the continuous improvement and development of modern bridge technology, the application of large-span, high-strength prestressed concrete T-beams is becoming increasingly widespread, characterized by simple structure, clear stress distribution, and good durability. After decades of development, it has become a relatively mature bridge construction technology. However, looking at the entire highway construction project, there are generally problems such as a large number of precast T-beams, tight schedules, and heavy workloads. Therefore, how to achieve factory-scale, mass production has become an urgent problem for the industry. The requirements for the setting of precast T-beam platforms are also becoming increasingly stringent. Currently, precast T-beam platforms are mainly composed of standard sections, transition sections, and widened sections at the beam ends, based on the changes in the beam's cross-sectional dimensions. Wedge blocks need to be installed at the bottom of the widened section at the beam ends. In current precast beam construction, the longitudinal slope adjustment of the wedge blocks at the bottom of the beam is usually achieved by setting movable steel plates on the base plate, inserting wooden wedges, or setting sand boxes.

[0003] However, the above methods are all susceptible to the influence of the upper construction load, the slope elevation is prone to change during construction operations, and continuous adjustment cannot be achieved. The longitudinal slope of the T-beam is difficult to control precisely, and the repeated adjustment of each T-beam takes a long time, which is time-consuming and labor-intensive. As a result, it is increasingly difficult to meet the needs of actual construction, thus causing many problems such as large workload, complicated construction, and poor quality control. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable longitudinal slope device for precast T-beams on highways. By setting up a concrete base plate, concrete foundation, support seat and adjustment components, it solves the problems of the above methods, which are easily affected by the upper construction load, the slope elevation is easy to change during construction, and continuous adjustment cannot be achieved. The longitudinal slope of the T-beam is difficult to control precisely, and the repeated adjustment time for each T-beam is long, which is time-consuming and labor-intensive and increasingly difficult to meet the needs of actual construction. Therefore, it causes a lot of problems such as large workload, complicated construction and poor quality control.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an adjustable longitudinal slope device for precast T-beams of highways, comprising a concrete base plate, a concrete foundation poured on the upper surface of the concrete base plate, support seats fixed inside both sides of the concrete foundation, and an adjustment component welded to the upper surface of the support seats.

[0006] The adjustment assembly includes a support pad welded to the upper surface of the support base. A high-strength screw is welded to the upper surface of the support pad. An adjustment frame is sleeved on the surface of the high-strength screw. A limit nut and a positioning nut are threadedly connected to the surface of the high-strength screw from top to bottom.

[0007] Preferably, the adjusting frame overlaps the upper surface of the positioning nut, and the lower surface of the limiting nut is in close contact with the adjusting frame.

[0008] Preferably, the inside of the adjustment frame is welded with diagonal bracing channel steel, and the upper and lower surfaces of the adjustment frame are welded with supporting steel plates.

[0009] Preferably, concrete A is poured at the bottom of the interior of the support base, and concrete B is poured at the top of the interior of the support base.

[0010] Preferably, the A concrete contains A reinforcing bars, and the B concrete contains B reinforcing bars.

[0011] Preferably, a channel steel is fixedly connected to the upper surface of the concrete foundation, a steel plate is welded to the upper surface of the channel steel, a PVC pipe is poured inside the concrete foundation, and lifting slots are provided on both sides of the concrete foundation.

[0012] This utility model provides an adjustable longitudinal slope device for the precast T-beam girder shoe of a highway, which has the following beneficial effects:

[0013] This equipment overcomes the shortcomings of traditional platforms that cannot adjust the longitudinal slope of the beams, enabling pre-adjustment and continuous adjustment of the beam longitudinal slope on the platform. The slope adjustment device features a safe and reliable structure, fast manufacturing and assembly, convenient operation, and reusability. It also avoids the significant waste of auxiliary materials in conventional methods. By adjusting the control components, it achieves pre-adjustment and continuous adjustment of the beam longitudinal slope on the platform to meet different size requirements. Furthermore, it is easy to install and dismantle, and can be reused, greatly saving costs, reducing energy consumption and carbon emissions during highway construction, and improving resource utilization efficiency. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a structural breakdown diagram of the support base of this utility model;

[0017] Figure 3 This is a structural dissection view of the support base of this utility model;

[0018] Figure 4 This is a structural breakdown diagram of the adjustment frame of this utility model.

[0019] The image shows:

[0020] 1. Concrete base slab; 2. Concrete foundation; 3. Support seat; 4. Support pad; 5. High-strength bolt; 6. Adjustment frame; 7. Limit nut; 8. Positioning nut; 9. Diagonal bracing channel steel; 10. Supporting steel plate; 11. A-reinforcing bar; 12. B-reinforcing bar; 13. Channel steel; 14. Steel plate; 15. PVC pipe; 16. Lifting slot. Detailed Implementation

[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes an adjustable longitudinal slope device for precast T-beams of highways, including a concrete base plate 1, a concrete foundation 2 poured on the upper surface of the concrete base plate 1, support seats 3 fixed inside both sides of the concrete foundation 2, and an adjustment component welded to the upper surface of the support seats 3.

[0024] The adjustment assembly includes a support pad 4 welded to the upper surface of the support base 3, a high-strength screw 5 welded to the upper surface of the support pad 4, an adjustment frame 6 sleeved on the surface of the high-strength screw 5, and a limit nut 7 and a positioning nut 8 threadedly connected from top to bottom to the surface of the high-strength screw 5.

[0025] The support plate 4 of the high-strength screw 5 is embedded in the concrete foundation 2. The embedded position and the inclination of the high-strength screw 5 need to be precisely controlled to ensure that the high-strength screw 5 and the adjustment frame 6 can be smoothly combined. After the adjustment frame 6 is adjusted up and down to the designed longitudinal slope elevation by rotating the positioning nut 8, the upper limit nut 7 of the adjustment frame 6 needs to be tightened. Both the positioning nut 8 and the limit nut 7 are equipped with wedge-shaped washers to prevent the nuts from loosening. Finally, by rotating to change the position of the nut, the single-point horizontal height of the adjustment frame 6 is increased, so as to realize the adjustment of the longitudinal and transverse slopes of the precast T-beam.

[0026] The adjusting frame 6 is attached to the upper surface of the positioning nut 8, and the lower surface of the limiting nut 7 is tightly abutted against the adjusting frame 6.

[0027] The inside of the adjustment frame 6 is welded with diagonal bracing channel steel 9. The adjustment frame 6 is composed of four No. 10 channel steel welded to form an outer frame. The slot faces the outside of the frame. The diagonal bracing channel steel 9 is made of No. 10 channel steel welded with two diagonal braces to enhance the compressive and shear resistance of the adjustment frame 6. The upper and lower sides of the adjustment frame 6 are welded with supporting steel plates 10.

[0028] The bottom of the four corner slots of the adjusting frame 6 has 20mm holes to allow the high-strength screws 5 to pass through, forming a movable device with the adjusting frame 6. 6mm thick support steel plates 10 are welded flat to the top and bottom of the adjusting frame 6 to replace point loads with uniformly distributed loads, making the stress system more rational.

[0029] A concrete is poured into the lower part of the interior of support base 3, and B concrete is poured into the upper part of the interior of support base 3.

[0030] Concrete A and concrete base slab 1 are made of C20 concrete, and concrete B and concrete foundation 2 are made of C30 concrete.

[0031] Concrete A has A-grade steel bars 11 inside, and concrete B has B-grade steel bars 12 inside.

[0032] The concrete is reinforced by reinforcing steel bars A11 and B12 to reduce the risk of breakage under long-term load.

[0033] A channel steel 13 is fixedly connected to the upper surface of the concrete foundation 2. A steel plate 14 is welded to the upper surface of the channel steel 13. A PVC pipe 15 is poured inside the concrete foundation 2. Lifting slots 16 are provided on both sides of the concrete foundation 2. Through the lifting slots 16, it is convenient for personnel to insert the lifting rope under the beam, so as to facilitate its lifting.

[0034] By assembling the channel steel 13 and the steel plate 14, the top of the concrete foundation 2 is kept flat, while avoiding uneven pressure, improving the stability of the concrete foundation 2 and reducing the occurrence of cracks.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable longitudinal slope device for precast T-beams on highways, comprising a concrete base plate (1), characterized in that: The upper surface of the concrete base plate (1) is cast with a concrete foundation (2), and the interior of both sides of the concrete foundation (2) is fixed with support seats (3), and the upper surface of the support seats (3) is welded with adjustment components. The adjustment assembly includes a support pad (4) welded to the upper surface of the support base (3), a high-strength screw (5) welded to the upper surface of the support pad (4), an adjustment frame (6) sleeved on the surface of the high-strength screw (5), and a limit nut (7) and a positioning nut (8) threaded from top to bottom on the surface of the high-strength screw (5).

2. The adjustable longitudinal slope device for precast T-beams of highways according to claim 1, characterized in that: The adjusting frame (6) overlaps the upper surface of the positioning nut (8), and the lower surface of the limiting nut (7) is in close contact with the adjusting frame (6).

3. The adjustable longitudinal slope device for precast T-beams of highways according to claim 1, characterized in that: The inside of the adjustment frame (6) is welded with inclined bracing channel steel (9), and the upper and lower sides of the adjustment frame (6) are welded with supporting steel plates (10).

4. The adjustable longitudinal slope device for precast T-beams of highways according to claim 1, characterized in that: A concrete is poured into the lower part of the interior of the support base (3), and B concrete is poured into the upper part of the interior of the support base (3).

5. The adjustable longitudinal slope device for precast T-beams of highways according to claim 4, characterized in that: The A concrete is filled with A steel bars (11), and the B concrete is filled with B steel bars (12).

6. The adjustable longitudinal slope device for precast T-beams of highways according to claim 1, characterized in that: The upper surface of the concrete foundation (2) is fixedly connected with a channel steel (13), and a steel plate (14) is welded to the upper surface of the channel steel (13). A PVC pipe (15) is poured inside the concrete foundation (2), and a hoisting slot (16) is provided on both sides of the concrete foundation (2).

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