Underground inclined support anchoring structure and foundation pit support

Abstract

The utility model relates to the technical field of foundation pit support, in particular to an underground diagonal bracing anchoring structure and a foundation pit support, which comprise a diagonal bracing, a diagonal bracing support and a first pre-stressed anchor cable, the inclined strut comprises an inclined supporting rod and a connecting plate fixed to the upper end of the supporting rod, and the connecting plate is fixed to the outer side face of the supporting plate. The inclined strut support is connected with the lower end of the supporting rod, and the bottom face of the inclined strut support is connected with a supporting pile. One end of the first pre-stressed anchor cable is anchored to the supporting plate and the connecting plate, and the other end of the first pre-stressed anchor cable obliquely extends downwards to a soil body. An inclined strut support is connected with the lower end of the supporting rod, and a supporting pile is arranged at the bottom of the inclined strut support to provide vertical supporting counter force for the inclined strut; the connecting plate is fixed on the outer side surface of the supporting plate, and the inclined pre-stressed anchor cable is anchored on the connecting plate, so that the supporting counter-force component in the horizontal direction is provided for the inclined strut. Therefore, according to the scheme, supporting counterforce in the vertical direction and the horizontal direction can be provided for the inclined strut, the stability of the supporting plate is guaranteed, and collapse of the foundation pit is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foundation pit support technical field more specifically, especially relates to a underground inclined support anchor tension structure and foundation pit support. BACKGROUND

[0002] In recent years with the rapid development of real estate and infrastructure, deep excavation engineering problems are more and more, a large number of horizontal inner support is used in the foundation pit, on the one hand, it leads to the increase of concrete pouring quantity, and further leads to the rise of construction time and construction cost, on the other hand, the horizontal inner support will occupy a large amount of space in the foundation pit, and further has a negative impact on the efficiency of subsequent construction.

[0003] The utility model discloses a kind of foundation pit unbraced support structure and method, wherein the foundation pit unbraced support structure of the application includes Larsen sheet pile, multiple support piles are arranged in the foundation pit on the side of Larsen sheet pile, multiple support rods are arranged between support pile and Larsen sheet pile, first anchor rod is inserted in the soil outside the pit on the side of each support pile, and the first anchor rod is connected with the top of support pile by first tightening device.The application cancels the internal support structure of foundation pit under the condition of guaranteeing the safety support of foundation pit, facilitates construction in foundation pit, and improves construction efficiency.But the structure above pulls together to the upper end of foundation pit, and the lower part of foundation pit is prone to collapse. UTILITY MODEL CONTENTS

[0004] The utility model discloses for overcoming above-mentioned situation shortage, aims at providing a underground inclined support anchor tension structure and foundation pit support that can solve above-mentioned problem.

[0005] A kind of underground inclined support anchor tension structure, it include inclined support, inclined support support and first prestressed anchor cable;The inclined support includes the support rod of inclination arrangement and the connecting plate fixed to the upper end of support rod, the connecting plate is fixed to the outer side of support plate.The inclined support support is connected with the lower end of the support rod, and the bottom surface of inclined support support is connected with support pile.The first prestressed anchor cable is anchored in the support plate and the connecting plate at one end, and the other end extends to the soil body obliquely downwards.

[0006] Further, the first prestressed anchor cable is provided with multiple.

[0007] Further, a first bearing platform is provided on the outer side of the connecting plate, and the upper end of the first prestressed anchor cable is anchored in the first bearing platform and connected with a first locking nut.

[0008] Further, the end of the first prestressed anchor cable inside the soil body is connected with an anchoring body.

[0009] Further, the end surface of the anchoring body connected with the first prestressed anchor cable is perpendicular to the first prestressed anchor cable.

[0010] Further, the first prestressed anchor cable is fixed in the middle of the anchoring body, a second prestressed anchor cable is arranged on the side of the first prestressed anchor cable, an auxiliary pull plate is arranged outside the supporting plate, one end of the second prestressed anchor cable penetrates through the supporting plate and is anchored to the auxiliary pull plate, and the other end is fixed in the anchoring body.

[0011] Further, the second prestressed anchor cable is parallel to the first prestressed anchor cable.

[0012] Further, the auxiliary pull plate is a steel plate.

[0013] Further, a second bearing platform corresponding to the second prestressed anchor cable is arranged outside the auxiliary pull plate, the upper end of the second prestressed anchor cable is anchored to the corresponding second bearing platform and is connected with a second locking nut.

[0014] A foundation pit support comprises a supporting plate and the underground inclined support anchor structure in the utility model, and the supporting plate is arranged on the inner side of a foundation pit wall.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The underground inclined support anchor structure in the utility model, the inclined support is composed of a support rod and a connecting plate fixed on the upper end of the support rod, the lower end of the support rod is connected through an inclined support base, and a support pile is arranged at the bottom of the inclined support base to provide a vertical supporting counterforce for the inclined support; the connecting plate is fixed on the outer side of the supporting plate, and a prestressed anchor cable is anchored on the connecting plate in an inclined manner, so that a horizontal supporting counterforce component is provided for the inclined support. It can be seen that the present scheme can provide vertical and horizontal supporting counterforces for the inclined support, ensure the stability of the supporting plate, avoid the collapse of the foundation pit, and support the inclined support by using the present scheme, which can avoid the use of horizontal inner supports, on the one hand, can greatly reduce the pouring amount of concrete, thereby reducing the construction cost and shortening the construction period; on the other hand, the horizontal inner support can avoid occupying the space in the foundation pit, thereby avoiding the adverse effect on the efficiency of subsequent construction. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings are used to provide a further understanding of the utility model and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0018] Figure 1 is the overall structure schematic view of the underground inclined support anchor structure in the embodiment one.

[0019] Figure 2 is the side view of the underground inclined support anchor structure in the embodiment one.

[0020] Figure 3is a schematic diagram of the overall structure of the underground inclined support anchor tension structure in Example Two.

[0021] Figure 4 is a side view of the underground inclined support anchor tension structure in Example Two.

[0022] Figure 5 is a schematic diagram of the overall structure of the underground inclined support anchor tension structure in Example Three.

[0023] Figure 6 is a side view of the underground inclined support anchor tension structure in Example Three.

[0024] In the figure: 1, support rod; 2, connecting plate; 3, inclined support seat; 4, support pile; 5, first prestressed anchor cable; 6, support plate; 7, first bearing platform; 8, first locking nut; 9, anchoring body; 10, second prestressed anchor cable; 11, auxiliary pull plate; 12, second bearing platform; 13, second locking nut. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Example One:

[0027] As shown in Figure 1 , Figure 2 , the underground inclined support anchor tension structure in the embodiment comprises an inclined support, an inclined support seat 3 and a first prestressed anchor cable 5. The inclined support comprises an inclined support rod 1 and a connecting plate 2 fixed to the upper end of the support rod 1, and the connecting plate 2 is fixed to the outer side of the support plate 6. The inclined support seat 3 is connected with the lower end of the support rod 1, and the bottom surface of the inclined support seat 3 is connected with a support pile 4. One end of the first prestressed anchor cable 5 is anchored to the support plate 6 and the connecting plate 2, and the other end extends obliquely downward into the soil outside the foundation pit.

[0028] Specifically, the support rod 1 and the connecting plate 2 are connected by welding. The inclined support seat 3 in the embodiment is in the shape of a rectangular cuboid as a whole, and a slope is arranged on the upper part of the side of the inclined support seat 3 close to the support plate 6, and the slope is connected with the support rod 1, and the slope and the support rod 1 are perpendicular to each other. The specific structure of the inclined support seat 3 and the support pile 4 can be a concrete structure, a steel structure or a steel-concrete structure. The top surface elevation of the inclined support seat 3 is lower than the foundation elevation.

[0029] In the embodiment, the first prestressed anchor cable 5 is provided with a plurality of first lock nuts 8, and the first prestressed anchor cable 5 is anchored to the first bearing platform 7 and connected with the first lock nut 8.

[0030] The underground inclined support anchor tension structure in the embodiment is composed of a support rod 1 and a connecting plate 2 fixed to the upper end of the support rod 1, the lower end of the support rod 1 is connected through an inclined support bearing 3, and a support pile 4 is arranged at the bottom of the inclined support bearing 3 to provide a vertical support reaction force for the inclined support; the connecting plate 2 is fixed to the outer side of a supporting plate 6, and a prestressed anchor cable inclined to the connecting plate 2 is anchored to the connecting plate 2, so as to provide a horizontal support reaction force component for the inclined support. It can be seen that the scheme can provide vertical and horizontal support reaction forces for the inclined support, ensure the stability of the supporting plate 6, avoid the collapse of the foundation pit, and support the inclined support by using the scheme, which can avoid the use of horizontal internal support, on the one hand, can greatly reduce the pouring amount of concrete, thereby reducing the construction cost and shortening the construction period; on the other hand, can avoid the occupation of the space in the foundation pit by the horizontal internal support, thereby avoiding the adverse effect on the subsequent construction efficiency.

[0031] Embodiment two:

[0032] As shown in Figure 3 , Figure 4 , the underground inclined support anchor tension structure in the embodiment is composed of a support rod 1 and a connecting plate 2 fixed to the upper end of the support rod 1, the lower end of the support rod 1 is connected through an inclined support bearing 3, and a support pile 4 is arranged at the bottom of the inclined support bearing 3 to provide a vertical support reaction force for the inclined support; the connecting plate 2 is fixed to the outer side of a supporting plate 6, and a prestressed anchor cable inclined to the connecting plate 2 is anchored to the connecting plate 2, so as to provide a horizontal support reaction force component for the inclined support. It can be seen that the scheme can provide vertical and horizontal support reaction forces for the inclined support, ensure the stability of the supporting plate 6, avoid the collapse of the foundation pit, and support the inclined support by using the scheme, which can avoid the use of horizontal internal support, on the one hand, can greatly reduce the pouring amount of concrete, thereby reducing the construction cost and shortening the construction period; on the other hand, can avoid the occupation of the space in the foundation pit by the horizontal internal support, thereby avoiding the adverse effect on the subsequent construction efficiency.

[0033] By arranging the anchoring body 9 and embedding the end of the first prestressed anchor cable 5 away from the connecting plate 2 in the anchoring body 9, the firmness of the first prestressed anchor cable 5 is enhanced, a reliable horizontal support reaction force component is provided for the inclined support, and the stability of the inclined support structure is further ensured.

[0034] Embodiment three:

[0035] As shown in Figure 5 , Figure 6As shown, the underground inclined support anchor structure in the embodiment has a circular end surface of the anchoring body 9 connected with the first prestressed anchor cable 5, and the first prestressed anchor cable 5 is fixed to the middle of the end surface, the first prestressed anchor cable 5 is provided with the second prestressed anchor cable 10 on the side, the supporting plate 6 is provided with the auxiliary pull plate 11 on the outside, one end of the second prestressed anchor cable 10 penetrates through the supporting plate 6 and is anchored to the auxiliary pull plate 11, and the other end is fixed to the anchoring body 9. The second prestressed anchor cable 10 is parallel to the first prestressed anchor cable 5, and the auxiliary pull plate 11 is a steel plate. The auxiliary pull plate 11 is provided with the second bearing platform 12 corresponding to the second prestressed anchor cable 10 on the outside, the upper end of the second prestressed anchor cable 10 is anchored to the corresponding second bearing platform 12 and is connected with the second locking nut 13.

[0036] By providing the second prestressed anchor cable 10 and the auxiliary pull plate 11, the supporting plate 6 is directly provided with supporting force, and the stability of the supporting plate 6 is further ensured.

[0037] Embodiment four:

[0038] The foundation pit support adopted in the embodiment comprises the supporting plate 6 and further comprises any one of the underground inclined support anchor structures in the embodiments one to four, and the supporting plate 6 is arranged on the inner side of the foundation pit wall.

[0039] Finally, it should be noted that: the above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can still be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An underground batter piling anchor structure, characterized by, The utility model relates to a kind of underground inclined support anchor structures, including: Inclined support, it includes that the support rod (1) is arranged obliquely and the connecting plate (2) is fixed to the upper end of support rod (1), and the connecting plate (2) is fixed to the outer side of support plate (6); Inclined support bracket (3), the lower end of the support rod (1) is connected with the inclined support bracket (3), and the bottom surface of the inclined support bracket (3) is connected with support pile (4); First prestressed anchor cable (5), one end of the first prestressed anchor cable (5) is anchored to the support plate (6) and the connecting plate (2), and the other end extends obliquely downward to the soil body.

2. The underground batter piling anchor structure according to claim 1, wherein The first prestressed anchor cable (5) is provided with a plurality of.

3. The underground batter piling anchor structure according to claim 2, wherein A first bearing platform (7) is provided on the outer side of the connecting plate (2), and the upper end of the first prestressed anchor cable (5) is anchored to the first bearing platform (7) and connected with a first locking nut (8).

4. The underground batter piling anchor structure according to claim 3, wherein One end of the first prestressed anchor cable (5) inside the soil body is connected with an anchoring body (9).

5. The underground batter piling anchor structure according to claim 4, wherein The anchoring body (9) connects the end surface of the first prestressed anchor cable (5) and the first prestressed anchor cable (5) vertically.

6. The underground batter piling anchor structure according to claim 5, wherein The first prestressed anchor cable (5) is fixed to the middle part of the anchoring body (9), a second prestressed anchor cable (10) is provided on the side of the first prestressed anchor cable (5), an auxiliary pull plate (11) is provided on the outer side of the support plate (6), one end of the second prestressed anchor cable (10) penetrates the support plate (6) and is anchored to the auxiliary pull plate (11), and the other end is fixed to the anchoring body (9) inside.

7. The underground batter piling anchor structure according to claim 6, wherein The second prestressed anchor cable (10) is parallel to the first prestressed anchor cable (5).

8. The underground batter piling anchor structure according to claim 7, wherein The auxiliary pull plate (11) is a steel plate.

9. The underground batter piling cable structure according to claim 8, wherein, A second bearing platform (12) corresponding to the second prestressed anchor cable (10) is provided on the outer side of the auxiliary pull plate (11), and the upper end of the second prestressed anchor cable (10) is anchored to the corresponding second bearing platform (12) and connected with a second locking nut (13).

10. A foundation pit support characterized by, The utility model relates to a kind of underground inclined support anchor structures, including support plate (6) and as any one of claims 1 to 9 described, the support plate (6) is arranged in the inner side of foundation pit wall.

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