Flange-connected spiral anchor foundation waterproof connector

Abstract

A flange-connected spiral anchor foundation waterproof connector comprises an anchor rod, a filler, a plugging material, a flexible flange and a round steel pipe. Wherein a round steel pipe is fixedly arranged below the upper structure, the round steel pipe is connected with the anchor rod through a flexible flange, a plugging material is arranged at the top of the anchor rod, filler is arranged below the plugging material, and the filler is a plastic bag wrapping straw or garbage. By the adoption of the technical scheme, the spiral anchor foundation is simple in structure and suitable for areas where the surface water level is high or rainfall is rich, and a foundation bearing layer is collapsible soil, collapsing caused by the fact that surface water outside a spiral anchor foundation connected through a conventional flange flows to the bottom of the anchor rod along the flange, an inner hole of the anchor rod and a gap can be avoided, and the design reliability level of the spiral anchor foundation is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power transmission and transformation engineering, and particularly relates to a waterproof connection joint for a spiral anchor foundation with flange connection. Background Technique

[0002] The spiral anchor foundation is an anchoring structure mainly composed of spiral anchors and upper bearing platforms, etc., which mainly utilizes deep soil to resist the action of the upper structure. In recent years, the spiral anchor foundation has been widely tested as a new technology in the field of transmission line tower foundations.

[0003] At present, there are still some problems with the spiral anchor foundation. As one of the design optimization ideas for the spiral anchor foundation, CN218933194U discloses a group-anchor type spiral anchor foundation with flange connection, and proposes a solution that can avoid on-site welding. The group-anchor type spiral anchor foundation with flange connection includes a steel bearing platform, the upper tower leg is connected above the steel bearing platform, several round steel pipes are fixed below the steel bearing platform, and each round steel pipe is connected to the anchor rod through a flange. Although this solution proposes a solution that can avoid on-site welding, a new problem has arisen. This solution uses flange installation, there are holes and gaps between the flange plates, and surface water can flow along the anchor rod, the bolt holes of the flange plate and the gaps to the bottom of the anchor rod, resulting in collapsible settlement, and even causing cavities under the anchor rod in some areas where the bearing stratum is collapsible soil, seriously affecting the bearing capacity of the spiral anchor foundation. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is: how to solve the waterproof problem of the spiral anchor foundation. Therefore, a waterproof connection joint for a spiral anchor foundation with flange connection is provided.

[0005] A waterproof connection joint for a spiral anchor foundation with flange connection includes an anchor rod, a filler, a sealing material, a flexible flange and a round steel pipe; wherein, a round steel pipe is fixedly arranged below the upper structure, the round steel pipe is connected to the anchor rod through a flexible flange, a sealing material is arranged at the top of the anchor rod, and a filler is arranged below the sealing material, and the filler is a plastic bag wrapped with straw or garbage.

[0006] A sealing material is arranged at the top of the anchor rod, and the sealing material is structural glue, concrete or cement mortar.

[0007] A slot hole is arranged at the top of the anchor rod, and the filler is located in the slot hole.

[0008] The top surface of the sealing material is flush with the lower top surface of the flexible flange, and the thickness of the sealing material is 100mm - 200mm.

[0009] The utility model adopting the above technical solution has a simple structure and is applicable to areas where the surface water level is high or precipitation is abundant, and the foundation bearing stratum is collapsible soil. It can avoid the surface water outside the screw anchor foundation with conventional flange connection flowing along the flange, the inner hole and the gap of the anchor rod to the bottom of the anchor rod, resulting in collapsibility, and improve the design reliability level of the screw anchor foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 FIG. is a schematic structural diagram of a waterproof connection joint of a flange-connected screw anchor foundation provided by the utility model;

[0011] Figure 2 FIG. is a schematic diagram of the positions of the plugging material inside the anchor rod and the flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] In order to make the objectives, technical solutions and advantages of the utility model clearer, the technical solutions in the utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some but not all of the embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the utility model belong to the scope of protection of the utility model.

[0013] As Figure 1 —— Figure 2 shown, a waterproof connection joint of a flange-connected screw anchor foundation includes an anchor rod 1, a filler 2, a plugging material 3, a flexible flange 4 and a round steel pipe 5. Among them, a round steel pipe 5 is fixedly arranged below the upper structure 6, the round steel pipe 5 is connected to the anchor rod 1 through the flexible flange 4, a plugging material 3 is arranged at the top of the anchor rod 1, and a filler 2 is arranged below the plugging material 3. The filler 2 can be a plastic bag wrapped with straw or garbage, and can be flexibly selected according to the materials at the construction site, which is economical and environmentally friendly.

[0014] In order to avoid surface water flowing along the flange, the inner hole of the anchor rod and the gap to the bottom of the anchor rod, resulting in collapsibility, the utility model adds a plugging material 3 at the top of the anchor rod 1. The plugging material 3 should have characteristics such as quick drying, rapid setting, impermeability or weak water permeability. The plugging material 3 is made of materials such as structural glue, concrete, and cement mortar with good anti-seepage performance. The filler 2 is located below the plugging material 3 and can be a plastic bag wrapped with straw or garbage, etc., for fixing the plugging material 3. The specific position of the filler 2 is determined according to the thickness of the plugging material 3.

[0015] Preferably, a slot hole is arranged at the top of the anchor rod 1, and the filler 2 is located in the slot hole.

[0016] The top surface of the plugging material 3 is flush with the lower top surface of the flexible flange 4, and the thickness of the plugging material 3 is 100 mm - 200 mm. The detailed thickness can be determined through calculation according to the actual hydrogeological conditions and the material permeability coefficient on site.

[0017] Furthermore, the connection methods between the flexible flange 4 and the anchor rod 1, and between the circular steel pipe 5 and the superstructure 6 are pre-welded in the factory. During construction, the flange should be set upwards as much as possible to reduce earth excavation.

[0018] The construction method of the present utility model is as follows:

[0019] During the construction of the waterproof connection joint of the screw anchor foundation, the screw anchor should be screwed in place first, then the filler 2 should be stuffed into the anchor rod 1, and the sealing material 3 should be filled in; after the filler 2 is filled densely and can bear the weight of the sealing material 3, the sealing material 3 should be filled in; after the sealing material 3 starts to set, the circular steel pipe 5 and the superstructure 6 can be connected with the flexible flange 4. This waterproof connection joint of the screw anchor foundation is applicable to areas with relatively high groundwater level or abundant precipitation, and the foundation bearing stratum is collapsible soil, which can avoid surface water flowing along the anchor rod and the inner hole of the flange plate to the bottom of the anchor rod, resulting in collapsible settlement, thereby improving the design reliability level of the screw anchor foundation.

[0020] As an improvement of the technical solution, for the waterproof connection joint of the flange-connected screw anchor foundation, the types and thicknesses of the sealing material can be determined according to the actual situation on site. In view of this, any modification or variation of the types and thicknesses of the sealing material 3 and the filler 2 shall be regarded as within the protection scope of the patent of the present utility model.

[0021] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A waterproof connection joint for a spiral anchor foundation with flange connection, characterized in that: It includes a bolt (1), a filler (2), a sealing material (3), a flexible flange (4) and a round steel pipe (5); among them, a round steel pipe (5) is fixedly arranged below the upper structure (6), the round steel pipe (5) is connected to the bolt (1) through the flexible flange (4), a sealing material (3) is arranged at the top of the bolt (1), and a filler (2) is arranged below the sealing material (3), and the filler (2) is a plastic bag wrapped with straw or garbage.

2. The waterproof connection joint of the screw anchor foundation with flange connection according to claim 1, wherein: A sealing material (3) is arranged at the top of the bolt (1), and the sealing material (3) is structural adhesive, concrete or cement mortar.

3. The waterproof connection joint of the screw anchor foundation with flange connection according to claim 1, characterized in that: A slot is arranged at the top of the bolt (1), and the filler (2) is located in the slot.

4. A waterproof connection joint for a spiral anchor foundation with flange connection according to claim 1, characterized in that: The top surface of the sealing material (3) is flush with the lower top surface of the flexible flange (4), and the thickness of the sealing material (3) is 100 mm - 200 mm.

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