Device for resisting construction stress

Abstract

The utility model discloses a device for resisting construction stress. The device comprises a first embedded plate, a second embedded plate, H-shaped steel, a supporting structure, I-shaped steel and a steel strand. The first pre-buried plate and the second pre-buried plate are arranged in the concrete framework, and the second pre-buried plate is located over the first pre-buried plate; one end of the H-shaped steel is welded with the first embedded plate; the supporting structure is composed of two first vertical plates, two second vertical plates and two supporting plates. The two first vertical plates and the two second vertical plates are welded to form a rectangular structure, and the two supporting plates are arranged in the rectangular structure and are parallel to the first vertical plates. A clamping piece anchorage device is arranged on a round hole in one end of the supporting structure; the supporting structure is welded to the end, away from the first embedded plate, of the H-shaped steel. One end of the I-shaped steel is connected with the upper part of the supporting structure; according to the utility model, the deformation cracking and damage risk of the concrete structure body can be reduced to an allowable range, the safety is good, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a device used for resisting construction stress. Background Art

[0002] In highway bridge construction, some facilities will be rebuilt or converted after completion, which may cause greater stress to the original structure and easily damage the original structure. During the secondary expansion or subsequent construction process, how to apply an adjustable stress opposite to the construction stress to the original structure and ensure the quality of the finished product of the completed project without potential safety hazards is a crucial part of ensuring safe production. In order to ensure the overall quality of the project and protect the quality of the completed structure, the stress conversion construction process of the steel strand meets the quality requirements of relevant specifications to implement the stress conversion of the steel strand.

[0003] Traditional construction uses rigid trusses to connect relative structures. The structure itself is heavy and complex, and hoisting is used for installation and dismantling. The installation and dismantling require a lot of manpower, equipment and machinery, and the safety risk is high. In addition, the larger the span of the traditional rigid connection, the more complex the rigid truss system is, and the stress caused by the deflection due to its own weight cannot be ignored, which places higher requirements on the span (connection length). Summary of the invention

[0004] The purpose of the utility model is to provide a device for resisting construction stress, so as to overcome the problems caused by the above-mentioned existing rigid truss construction and balance the adverse effects caused by the construction stress.

[0005] To achieve the above object, the utility model provides the following technical solution: a device for resisting construction stress, comprising a No. 1 embedded plate, a No. 2 embedded plate, an H-shaped steel, a supporting structure, an I-shaped steel and a steel strand;

[0006] The No. 1 embedded plate and the No. 2 embedded plate are set in the concrete frame, and the No. 2 embedded plate is located directly above the No. 1 embedded plate; the H-shaped steel is set horizontally, and one end of it is welded to the No. 1 embedded plate;

[0007] The supporting structure is a frame structure, consisting of two No. 1 vertical plates, two No. 2 vertical plates and two supporting plates. There is a circular hole in the middle of the two No. 2 vertical plates; the two No. 1 vertical plates and the two No. 2 vertical plates are welded into a rectangular structure, and the two support plates are arranged in the rectangular structure and parallel to the No. 1 vertical plate; a clip anchor is provided on the circular hole at one end of the supporting structure, and the steel strand passes through the clip anchor and the supporting structure, one end of which is connected to the tensioning cylinder, and the other end is connected to the main structure; the supporting structure is welded to the end of the H-shaped steel away from the No. 1 embedded plate; the I-beam is arranged at an angle, one end of which is connected to the upper part of the supporting structure, and the other end is connected to the No. 2 embedded plate.

[0008] Preferably, stiffening plates are welded on the H-shaped steel, and the number of stiffening plates is 2-3.

[0009] Preferably, a backing plate is provided between the clip anchor and the support structure.

[0010] Preferably, the height of the second embedded plate is higher than the height of the supporting structure.

[0011] The utility model designs a device that generates a construction stress-resistant device between two structures through the connection of steel strands, and gradually adjusts the tensioning force of the steel strands according to the structural deformation to balance the adverse effects of the construction stress. The utility model device can reduce the risk of deformation, cracking and even damage of the concrete structure to an allowable range, reduce the probability of safety accidents, and has good safety and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 This is a top view of the relationship between the supporting structure and the H-beam;

[0014] Figure 3 is a top view of the supporting structure;

[0015] Figure 4 A side view of the supporting structure. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are now described with reference to the accompanying drawings. It will be understood by those skilled in the art that the following embodiments are only used to illustrate the present invention and should not be considered as limiting the scope of the present invention. If no specific technology, connection relationship or condition is indicated in the embodiments, the technology, connection relationship, condition described in the literature in the field or the product specification is used. If the manufacturer of the materials, instruments or equipment used is not indicated, they are all conventional products that can be purchased.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0018] Combination Figure 1-Figure 4 As shown, the utility model provides a device for resisting construction stress, comprising a No. 1 embedded plate 1, a No. 2 embedded plate 2, an H-shaped steel 3, a supporting structure 4, an I-shaped steel 5 and a steel strand 6;

[0019] The first embedded plate 1 and the second embedded plate 2 are arranged in the concrete frame 8, and the second embedded plate 2 is located directly above the first embedded plate 1; the H-shaped steel 3 is arranged horizontally, and one end thereof is welded to the first embedded plate 1; two stiffening plates 9 are welded to the H-shaped steel 3;

[0020] The support structure 4 is a square frame structure, which is composed of two No. 1 vertical plates 41, two No. 2 vertical plates 42 and two support plates 43. A circular hole 44 is opened in the middle of the two No. 2 vertical plates 42; the two No. 1 vertical plates 41 and the two No. 2 vertical plates 42 have the same height; the two No. 1 vertical plates 41 and the two No. 2 vertical plates 42 are welded into a structure with a rectangular cross section, and the two support plates 43 are arranged in the rectangular structure and parallel to the No. 1 vertical plate 41. The two support plates 43 are fixedly arranged on both sides of the circular hole 44, and the support plates 43 are respectively connected to the No. 2 vertical plates at both ends. Plate welding; a clip anchor 7 is provided on the circular hole 44 at one end of the supporting structure 4, and the steel strand 6 passes through the clip anchor 7 and the supporting structure 4. One end of the steel strand 6 is connected to the tensioning cylinder, and the other end adopts the same supporting structure as the tensioning end as a connection measure, fixed with anchors and clips, and connected to the main structure; the supporting structure 4 is welded to the end of the H-shaped steel 3 away from the No. 1 embedded plate 1; the height of the No. 2 embedded plate 2 is higher than the height of the supporting structure 4; the I-beam 5 is arranged obliquely, one end of which is connected to the upper part of the supporting structure 4, and the other end is connected to the No. 2 embedded plate 2.

[0021] To further optimize the solution, a pad 10 is provided between the clip anchor 7 and the supporting structure 4, and a circular hole is also opened on the pad 10; a 1m working space is left between the supporting structure and the concrete frame for operating the tensioning equipment.

[0022] During the construction process, the tensioning system is set in the opposite direction of the stress generated by the structure according to the subsequent procedures. The tensioning end is set at a reliable position outside the structure, and the fixed end is set on the structure that needs to provide stress. Taking the bridge clamping type jacking as an example, when the bridge body is pushed forward, the friction force is transmitted to the pier to give the pier a stress forward along the bridge. At this time, the moment of the pier is affected by the pier height. The higher the pier, the greater the moment. It is necessary to apply a pulling force to the pier in the opposite direction of the bridge to balance the friction generated by the jacking. The magnitude of the friction force is determined according to the weight of the bridge, the friction coefficient and the design slope of the bridge. In conventional jacking, the bridge needs to be assembled and pushed at the same time. The weight of the bridge body continues to increase, the friction force continues to increase, and the required pulling force also continues to increase. Therefore, the tension at the tensioning end of the steel strand needs to be adjusted according to the weight of the bridge to achieve a relative balance of stress. After the construction is completed, the bridge is in place, the displacement no longer changes, and the tensioning end slowly releases the stress of the steel strand to observe the deformation of the structure until the construction is completed. The utility model eliminates the risk of high-altitude operations in hoisting and disassembling large-span rigid supports. Workers only need to loosen the steel strands at the protected piers and then cut off the disassembly device. The utility model is light in weight, simple and convenient to construct, and also improves construction efficiency.

[0023] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for resisting construction stress, characterized in that: It comprises a No. 1 embedded plate (1), a No. 2 embedded plate (2), an H-shaped steel (3), a supporting structure (4), an I-shaped steel (5) and a steel strand (6); The first embedded plate (1) and the second embedded plate (2) are arranged in the concrete frame (8), and the second embedded plate (2) is located directly above the first embedded plate (1); the H-shaped steel (3) is arranged horizontally, and one end of the H-shaped steel (3) is welded to the first embedded plate (1); The support structure (4) is a square frame structure, which is composed of two No. 1 vertical plates (41), two No. 2 vertical plates (42) and two support plates (43). The two No. 2 vertical plates (42) are each provided with a circular hole (44) in the middle. The two No. 1 vertical plates (41) and the two No. 2 vertical plates (42) are welded into a rectangular structure. The two support plates (43) are arranged in the rectangular structure and are parallel to the No. 1 vertical plates (41). A clip anchor (7) is provided on the circular hole (44) at one end of the support structure (4). The steel strand (6) passes through the clip anchor (7) and the support structure (4). One end of the steel strand (6) is connected to the tensioning cylinder and the other end is connected to the main structure. The support structure (4) is welded to the end of the H-shaped steel (3) away from the No. 1 embedded plate (1). The I-beam (5) is arranged obliquely, with one end thereof being connected to the upper part of the supporting structure (4) and the other end thereof being connected to the second embedded plate (2).

2. A device for resisting construction stress according to claim 1, characterized in that: A stiffening plate (9) is also welded to the H-shaped steel (3), and the number of the stiffening plates (9) is 2-3.

3. A device for resisting construction stress according to claim 1, characterized in that: A pad (10) is provided between the clip anchor (7) and the supporting structure (4).

4. A device for resisting construction stress according to claim 1, characterized in that: The height of the second embedded plate (2) is higher than the height of the supporting structure (4).

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