Variable cross-section steel reinforced cantilever supporting structure

Abstract

The utility model relates to the technical field of geotechnical engineering, in particular to a variable cross-section profile steel reinforced cantilever supporting structure which comprises a cantilever, a connecting ring, a reinforcing arm, a variable cross-section built-in arm and I-shaped steel. The cantilever is fixedly welded with the reinforcing arm through the connecting ring, the reinforcing arm is welded with the variable cross-section build-in arm, the variable cross-section build-in arm is embedded into a sliding bed or a bedrock layer, and the two ends of the I-shaped steel are located in the reinforcing arm and the variable cross-section build-in arm respectively and used for enhancing the connecting effect between the reinforcing arm and the variable cross-section build-in arm. Displacement and internal force transmitted to the reinforcing arms by the cantilevers can be reduced, so that thrust of a sliding bed or a bedrock layer on the cantilevers and the reinforcing arms is reduced, the reinforcing arms transmit the internal force to the variable-cross-section built-in arms finally, and the variable-cross-section built-in arms transmit the internal force to surrounding rock layer soil. Compared with a traditional anti-slide pile supporting technology, the I-shaped steel is added, the rigidity of different portions of the pile body is enhanced, and landslide thrust is efficiently transmitted.

Description

Technical Field

[0001] The utility model relates to the technical field of geotechnical engineering, in particular to a variable-section steel reinforced cantilever support structure. Background Art

[0002] The anti-slip slope has a very important significance. At present, the main method to achieve the anti-slip slope is the anti-slip pile support technology (bored cast-in-place pile type). In the current slope and foundation pit support, the anti-slip pile support is widely used. It is a structural form in which bored cast-in-place piles are arranged in a straight line and connected by connecting beams to jointly resist the lateral earth pressure or landslide thrust, but the ability of bored cast-in-place piles to resist lateral loads is low.

[0003] From the perspective of mechanical properties, circular piles are used to resist lateral loads. While meeting shear resistance conditions, their ability to resist bending moments is low. Due to poor bending resistance, a large amount of steel bars are required to resist bending, resulting in insufficient material utilization, high costs and uneconomical operation, which limits its scope of use. Utility Model Content

[0004] The purpose of the utility model is to provide a variable-section steel reinforced cantilever support structure, aiming to solve the problem that the existing anti-sliding pile support technology has low ability to resist bending moments, requires a large number of steel bars to resist bending, is costly and uneconomical, and limits the scope of use.

[0005] To achieve the above-mentioned purpose, the utility model provides a variable-section steel reinforced cantilever support structure, including a cantilever, a connecting ring, a reinforcement arm, a variable-section embedded arm and an I-beam; the connecting ring is arranged on one side of the cantilever, the reinforcement arm is fixedly connected to the connecting ring and is located on the side of the connecting ring away from the cantilever, the variable-section embedded arm is arranged on the side of the reinforcement arm away from the connecting ring, and the I-beam is arranged in the variable-section embedded arm and passes through the reinforcement arm.

[0006] Among them, the variable-section steel reinforced cantilever support structure also includes a connecting piece and a fixing bolt. The connecting piece is fixedly connected to the cantilever and is located on both sides of the cantilever. The fixing bolt is arranged on one side of the connecting piece.

[0007] Among them, the variable-section embedded arm includes an embedded rod, an outer cylinder, a steel cage and a cement layer. The outer cylinder is arranged on the side of the reinforcement arm away from the connecting ring. The embedded rod is fixedly connected to the outer cylinder and is located outside the outer cylinder. The steel cage is arranged in the outer cylinder, and the cement layer is arranged on one side of the steel cage.

[0008] Among them, the variable-section steel reinforced cantilever support structure also includes a connecting component, and the connecting component is arranged on the outside of the reinforcement arm.

[0009] Among them, the connecting assembly includes a reinforcing rib and a welding head, the welding head is fixedly connected to the reinforcing arm and is located on the outside of the reinforcing arm, the welding head has a clamping groove, the clamping groove is located on the side of the welding head away from the reinforcing arm, and the reinforcing rib is clamped with the welding head and is located on one side of the clamping groove.

[0010] The utility model discloses a variable-section steel reinforced cantilever support structure, comprising a cantilever, a connecting ring, a reinforcing arm, a variable-section embedded arm and an I-beam; the connecting ring is arranged on one side of the cantilever, the reinforcing arm is fixedly connected to the connecting ring and is located on the side of the connecting ring away from the cantilever, and the I-beam is arranged in the variable-section embedded arm and passes through the reinforcing arm.

[0011] The cantilever is welded and fixed to the reinforcement arm through the connecting ring, the reinforcement arm and the variable-section embedded arm are welded, the variable-section embedded arm is embedded in the slide bed or bedrock layer, and the two ends of the I-beam are respectively located in the reinforcement arm and the variable-section embedded arm, so as to strengthen the connection effect between the reinforcement arm and the variable-section embedded arm, and can reduce the displacement and internal force transmitted from the cantilever to the reinforcement arm, and reduce the thrust of the slide bed or bedrock layer on the cantilever and the reinforcement arm. The reinforcement arm finally transmits the internal force to the variable-section embedded arm, and the variable-section embedded arm then transmits the internal force to the surrounding rock strata and soil. The support structure reduces the amount of steel bars used. Compared with the traditional anti-sliding pile support technology, the I-beam is added to strengthen the stiffness of different parts of the pile body, efficiently transmit the landslide thrust, and solve the problem that the existing anti-sliding pile support technology has low ability to resist bending moment, needs to configure a large number of steel bars for bending resistance, is costly and uneconomical, and limits the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a structural schematic diagram of a variable-section steel reinforced cantilever support structure of the first embodiment of the utility model.

[0014] Figure 2 It is a transverse cross-sectional view of a variable-section embedded arm of a variable-section steel reinforced cantilever support structure according to the first embodiment of the utility model.

[0015] Figure 3 It is a structural schematic diagram of a variable-section steel reinforced cantilever support structure of the second embodiment of the utility model.

[0016] In the figure: 101-cantilever, 102-connecting ring, 103-reinforcement arm, 104-I-beam, 105-connecting plate, 106-fixing bolt, 107-embedded rod, 108-outer cylinder, 109-reinforcement cage, 110-cement layer, 201-reinforcement rib, 202-welding head, 203-clamping groove. DETAILED DESCRIPTION

[0017] The first embodiment of the present application is:

[0018] See also Figure 1-Figure 2 , Figure 1 It is a structural schematic diagram of the utility model. Figure 2 It is a transverse sectional view of the variable-section embedded arm of the utility model. The variable-section steel reinforced cantilever support structure of the present embodiment comprises a cantilever 101, a connecting ring 102, a reinforcing arm 103, a variable-section embedded arm, an I-beam 104, a connecting piece 105 and a fixing bolt 106. The variable-section embedded arm comprises an embedded rod 107, an outer tube 108, a steel cage 109 and a cement layer 110. The above-mentioned scheme solves the problem that the existing anti-sliding pile support technology has low ability to resist bending moments, requires a large number of steel bars to resist bending, is costly and uneconomical, and limits the scope of use. It can be understood that the above-mentioned scheme can be used in landslide protection scenarios.

[0019] According to this specific embodiment, the connecting ring 102 is arranged on one side of the cantilever 101, the reinforcing arm 103 is fixedly connected to the connecting ring 102 and is located on the side of the connecting ring 102 away from the cantilever 101, the variable-section embedded arm is arranged on the side of the reinforcing arm 103 away from the connecting ring 102, the I-beam 104 is arranged in the variable-section embedded arm and passes through the reinforcing arm 103, the cantilever 101 is welded and fixed to the reinforcing arm 103 through the connecting ring 102, the reinforcing arm 103 and the variable-section embedded arm are welded, the variable-section embedded arm is embedded in the slide bed or bedrock layer, and the two ends of the I-beam 104 are respectively located in the reinforcing arm 103 and the variable-section embedded arm, for reinforcing The connection effect between the reinforcing arm 103 and the variable-section embedded arm is strengthened, and the displacement and internal force transmitted from the cantilever 101 to the reinforcing arm 103 can be reduced, and the thrust of the sliding bed or bedrock layer on the cantilever 101 and the reinforcing arm 103 is reduced. The reinforcing arm 103 finally transmits the internal force to the variable-section embedded arm, and the variable-section embedded arm then transmits the internal force to the surrounding rock strata. The support structure reduces the amount of steel bars used. Compared with the traditional anti-sliding pile support technology, the I-beam 104 is added to strengthen the stiffness of different parts of the pile body, efficiently transmit the landslide thrust, and solve the problem that the existing anti-sliding pile support technology has low ability to resist bending moments, requires a large number of steel bars to resist bending, is costly and uneconomical, and limits the scope of use.

[0020] Among them, the connecting piece 105 is fixedly connected to the cantilever 101 and is located on both sides of the cantilever 101. The fixing bolt 106 is arranged on one side of the connecting piece 105. The connecting piece 105 is welded and fixed on both sides of the reinforcement arm 103. The fixing bolt 106 passes through the connecting piece 105 and is driven into the slide bed or bedrock layer, so that the reinforcement arm 103 is tightly attached to the slide bed or bedrock layer.

[0021] Secondly, the outer cylinder 108 is arranged on the side of the reinforcement arm 103 away from the connecting ring 102, the embedded rod 107 is fixedly connected to the outer cylinder 108 and is located on the outside of the outer cylinder 108, the steel cage 109 is arranged in the outer cylinder 108, the cement layer 110 is arranged on one side of the steel cage 109, the outer cylinder 108 is nailed into the slide bed or bedrock layer through the embedded rod 107, and provides installation conditions for the reinforcement arm 103. The steel cage 109 is welded by a plurality of longitudinal and transverse steel bars. The steel cage 109 is placed in the outer cylinder 108, and the cement layer 110 is injected into the outer cylinder 108, and the strength of the outer cylinder 108 is strengthened by the cement layer 110 and the steel cage 109.

[0022] When the variable-section steel reinforced cantilever support structure is used, the outer cylinder 108 is nailed into the slide bed or bedrock layer by the embedded rod 107, and then the steel cage 109 is placed in the outer cylinder 108, and the cement layer 110 is injected into the outer cylinder 108, and the I-beam 104 is placed in the cement layer 110. After the cement layer 110 solidifies, the other end of the I-beam 104 is inserted into the reinforcement arm 103, and the reinforcement arm 103 and the outer cylinder 108 are welded and fixed. The fixing bolt 106 is driven into the slide bed or bedrock layer, and the connecting piece 105 is pressed against the slide bed or bedrock layer, so that the reinforcement arm 103 is close to the slide bed or bedrock layer. Finally, the cantilever 101 is set on the top of the slide bed or bedrock layer, and the cantilever 101 and the reinforcement arm 103 are welded and fixed by the connecting ring 102.

[0023] The second embodiment of the present application is:

[0024] Based on the first embodiment, please refer to Figure 3 , Figure 3 It is a structural schematic diagram of the present utility model. The variable-section steel reinforced cantilever support structure of this embodiment also includes a connection component, and the connection component includes a reinforcing rib 201 and a welding head 202.

[0025] According to this specific embodiment, the connecting component is arranged on the outside of the reinforcing arm 103. The setting of the connecting component is used for connecting between the reinforcing arms 103 to enhance the strength of the variable-section steel reinforced cantilever support structure.

[0026] Among them, the welding head 202 is fixedly connected to the reinforcing arm 103 and is located on the outside of the reinforcing arm 103. The welding head 202 has a clamping groove 203, and the clamping groove 203 is located on the side of the welding head 202 away from the reinforcing arm 103. The reinforcing rib 201 is clamped with the welding head 202 and is located on one side of the clamping groove 203. The welding head 202 is welded and fixed on the outside of the reinforcing arm 103, and the welding head 202 is clamped to the reinforcing rib 201 through the clamping groove 203.

[0027] When the connecting assembly is used, the welding head 202 is welded and fixed to the outside of the reinforcing arm 103, and then the reinforcing rib 201 is clamped in the clamping groove 203, and finally the reinforcing rib 201 and the welding head 202 are welded and fixed.

[0028] What is disclosed above is only a preferred embodiment of a variable-section steel reinforced cantilever support structure of the present application, and it cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A variable-section steel reinforced cantilever support structure, characterized in that: It includes cantilever, connecting ring, reinforcement arm, variable-section embedded arm and I-beam; The connecting ring is arranged on one side of the cantilever, the reinforcing arm is fixedly connected to the connecting ring and is located on the side of the connecting ring away from the cantilever, the variable-section embedded arm is arranged on the side of the reinforcing arm away from the connecting ring, the I-beam is arranged in the variable-section embedded arm and passes through the reinforcing arm.

2. A variable cross-section steel reinforced cantilever support structure as claimed in claim 1, characterized in that: The variable-section steel reinforced cantilever support structure also includes a connecting piece and a fixing bolt. The connecting piece is fixedly connected to the cantilever and is located on both sides of the cantilever. The fixing bolt is arranged on one side of the connecting piece.

3. A variable cross-section steel reinforced cantilever support structure as claimed in claim 2, characterized in that: The variable-section embedded arm includes an embedded rod, an outer cylinder, a steel cage and a cement layer. The outer cylinder is arranged on the side of the reinforcement arm away from the connecting ring. The embedded rod is fixedly connected to the outer cylinder and is located outside the outer cylinder. The steel cage is arranged in the outer cylinder, and the cement layer is arranged on one side of the steel cage.

4. A variable cross-section steel reinforced cantilever support structure as claimed in claim 3, characterized in that: The variable-section steel reinforced cantilever support structure also includes a connecting component, which is arranged on the outside of the reinforcement arm.

5. A variable cross-section steel reinforced cantilever support structure as claimed in claim 4, characterized in that: The connecting assembly includes a reinforcing rib and a welding head, wherein the welding head is fixedly connected to the reinforcing arm and is located on the outside of the reinforcing arm, the welding head has a clamping groove, and the clamping groove is located on the side of the welding head away from the reinforcing arm, and the reinforcing rib is clamped with the welding head and is located on one side of the clamping groove.

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