CN201031391Y - Umbrella-shaped anti-pulling anchor - Google Patents

Abstract

The utility model discloses an umbrella-shaped anti-pull anchor, which comprises a force transmission noose (1) and a lower sleeve (7). The lower sleeve (7) is provided with a lower chassis (6), and the lower sleeve (7) ) is provided with an upper chassis (3), on the upper chassis (3) is movably connected with a balance bar (4), on the lower chassis (6) is movably connected with a self-expanding bar (5), and the balance bar (4) and the self-expanding bar Expansion bar (5) is movably connected, and one end of power transmission noose (1) is connected with lower sleeve (7), and the other end of power transmission noose (1) passes in upper chassis (3). In the utility model, under the action of tension, the umbrella wing, that is, the balance bar and the self-expanding bar will be opened to form a very thick soil column (soil pile); the weight of the soil itself and the shear strength of the soil and the soil itself are used to The anti-pull force required by the foundation is provided, so that the force performance of the utility model is improved, and the safety of the building is improved.

Description

Umbrella anti-uplift anchor

technical field

The utility model relates to a building anti-floating anchor rod, in particular to an umbrella-shaped anti-pulling anchor.

Background technique

With the vigorous development and utilization of underground space, we encounter more and more problems of resisting uplift loads in engineering construction. There are more and more floating structures that need to be solved, such as underground squares in high water level areas, underground garages and water treatment structures. At present, the anti-floating design of buildings mainly includes anti-floating piles and anti-floating anchor rods. The anti-floating pile is usually fully consolidated with the foundation floor. When the groundwater level is high, it is an uplift pile. When the groundwater level is low, it becomes a pressure pile to reduce the settlement of the building. The floating anchor is only anchored on the foundation floor through steel strands, and a cushion is set between the anchor and the foundation floor. The anti-floating anchor only plays a role when the groundwater level is high, and when the groundwater level is low, the building When the object has a tendency to settle, the anchor rod has little effect.

For the uplift pile, the uplift resistance it can provide mainly comes from two aspects: the frictional resistance of the concrete and soil on the side of the pile provides the downward pull force for the uplift pile and the vertical gravity provided by the quality of the pile itself. For the former, the use of concrete that is mainly based on compression performance is a bit of a disadvantage, and the gain outweighs the gain; the latter uses the quality of concrete to replace the quality of the soil itself, and the increase is not much, and the waste is relatively large. For pull-out anchors, the pull-out force they can provide mainly comes from the frictional resistance of the concrete and soil of the anchor body, which is generally small. If you want to obtain a larger pull-out force, you need to increase the length of the anchor rod, which is wasteful. larger.

Contents of the invention

The utility model provides an umbrella-shaped anti-pull anchor with simple structure and good force bearing performance.

The utility model adopts the following technical solutions:

An umbrella-shaped anti-lift anchor, including a force transmission rope and a lower sleeve, a lower chassis is arranged on the lower sleeve, an upper chassis is arranged above the lower sleeve, a balance bar is movably connected to the upper chassis, and a balance bar is movably connected to the lower chassis. A self-expanding rod is movably connected, and the balance rod and the self-expanding rod are movably connected, one end of the power transmission noose is connected with the lower sleeve, and the other end of the power transmission noose passes through the upper chassis.

Compared with the prior art, the utility model has the following advantages:

1. The utility model has simple structure and good mechanical performance. In the utility model, under the action of tension, the umbrella wing, that is, the balance bar and the self-expanding bar will be opened to form a very thick soil column (soil pile); the weight of the soil body itself and the shear strength of the soil and the soil itself are used to Providing the pullout force required by the foundation improves the mechanical performance of the utility model and improves the safety of the building, which is more reasonable than the previous pullout technology that only relies on anchors or piles to provide pullout force.

2. The utility model is convenient to use and can reduce costs. As far as the utility model itself is concerned, it relies on the weight of the soil itself to provide pullout resistance, which can reduce the difficulty of pile formation, facilitate the use of users, and reduce the amount of concrete used, thereby reducing the cost and cost of the project.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the upper chassis.

Fig. 3 is a schematic structural view of Embodiment 2 of the utility model.

Fig. 4 is a structural schematic diagram of a balance bar.

Fig. 5 is a structural schematic diagram of a self-expanding rod.

Fig. 6 is a schematic structural view of the utility model in a folded state.

Detailed ways

Example 1

An umbrella-shaped anti-pull anchor, including a force transmission noose 1 and a lower sleeve 7, a lower chassis 6 is arranged on the lower sleeve 7, an upper chassis 3 is arranged above the lower sleeve 7, and the upper chassis 3 is flexibly connected A balance bar 4 is arranged, and a self-expanding bar 5 is movably connected on the lower chassis 6, and the balance bar 4 and the self-expanding bar 5 are movably connected, and one end of the force transmission noose 1 is connected with the lower sleeve 7, and the other end of the force transmission noose 1 is Through the upper chassis 3, the upper sleeve 2 is arranged in the upper chassis 3, and the lower end of the upper sleeve 2 is provided with a guide column 21, and a guide groove is provided in the guide column 21. The upper end of the lower sleeve 7 located in the guide groove.

In this embodiment, when used on site, the hole is formed first (the existing exploration hole can also be used), and then the umbrella-shaped anti-uplift anchor is closed and inserted into the borehole, and a downward force is applied to the upper sleeve 2 after putting in. The pressure makes the self-expanding rod 5 open to a certain angle, and when the self-expanding rod 5 penetrates the soil to a certain depth, an upward pulling force is applied to the force transmission noose 1, so that the combination of the lower chassis 6 and the lower sleeve 7 is formed. The trend of upward movement, so that the umbrella-shaped anchoring end is fully opened, and then a certain amount of concrete is poured to form the enlarged head of the pile end to ensure that it is in close contact with the bottom soil, and dense clay is filled in the upper part of the drilled hole, and finally locked. When it is on the foundation base plate, a certain prestressing force is applied to the force transmission noose 1 and gets final product.

Example 2

An umbrella-shaped anti-pull anchor, including a force transmission noose 1 and a lower sleeve 7, a lower chassis 6 is arranged on the lower sleeve 7, an upper chassis 3 is arranged above the lower sleeve 7, and the upper chassis 3 is flexibly connected A balance bar 4 is arranged, and a self-expanding bar 5 is movably connected on the lower chassis 6, and the balance bar 4 and the self-expanding bar 5 are movably connected, and one end of the force transmission noose 1 is connected with the lower sleeve 7, and the other end of the force transmission noose 1 is Through the upper chassis 3, the upper sleeve 2 is arranged in the upper chassis 3, and the lower end of the upper sleeve 2 is provided with a guide column 21, and a guide groove is provided in the guide column 21. The upper end of the lower sleeve 7 Located in the guide groove, the upper chassis 3 includes an upper chassis seat 31, and a mounting frame 32 is arranged on the periphery of the upper chassis seat 31, and the balance bar 4 is movably connected to the mounting frame 32, and the flexible connection in this embodiment can be Realized by splicing.

In this embodiment, when used on site, the hole is formed first (the existing exploration hole can also be used), and then the umbrella-shaped anti-uplift anchor is closed and inserted into the borehole, and a downward force is applied to the upper sleeve 2 after putting in. The pressure makes the self-expanding rod 5 open to a certain angle, and when the self-expanding rod 5 penetrates the soil to a certain depth, an upward pulling force is applied to the force transmission noose 1, so that the combination of the lower chassis 6 and the lower sleeve 7 is formed. The trend of upward movement, so that the umbrella-shaped anchoring end is fully opened, and then a certain amount of concrete is poured to form the enlarged head of the pile end to ensure that it is in close contact with the bottom soil, and dense clay is filled in the upper part of the drilled hole, and finally locked. When it is on the foundation base plate, a certain prestressing force is applied to the force transmission noose 1 and gets final product.

Claims (3)

1. An umbrella-shaped anti-uplift anchor is characterized in that this umbrella-shaped anti-uplift anchor comprises a force transmission noose (1) and a lower sleeve (7), and the lower sleeve (7) is provided with a lower chassis (6), An upper chassis (3) is arranged above the lower sleeve (7), a balance bar (4) is movably connected to the upper chassis (3), and a self-expanding rod (5) is movably connected to the lower chassis (6), and the balance Rod (4) is movably connected with self-expanding rod (5), one end of power transmission noose (1) is connected with lower sleeve (7), and the other end of power transmission noose (1) passes through upper chassis (3) . 2. The umbrella-shaped uplift anchor according to claim 1, characterized in that an upper sleeve (2) is provided in the upper chassis (3), and a guide column (21) is provided at the lower end of the upper sleeve (2) ), a guide groove is provided in the guide column (21), and the upper end of the lower sleeve (7) is located in the guide groove. 3. The umbrella-shaped uplift anchor according to claim 1, characterized in that the upper chassis (3) includes an upper chassis seat (31), and a mounting frame (32) is provided on the periphery of the upper chassis seat (31).

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