Low-disturbance three-dimensional frame support structure

Abstract

The utility model discloses a low-disturbance stereo frame support structure, comprising: multiple rows of micro piles, each row of micro piles is arranged in a circle along the circumferential direction of the foundation pit; a crown beam cast on the pile tops of the multiple rows of micro piles; multiple reinforcement piles, arranged on the outside of the multiple rows of micro piles away from the foundation pit, the side of the crown beam is formed with an extension, and the pile tops of the reinforcement piles are embedded in the extension; inclined piles buried in the soil outside the multiple rows of micro piles and arranged obliquely, the upper end of the inclined pile is connected to the crown beam, and the lower end of the inclined pile is arranged obliquely downward toward the outside of the foundation pit. The utility model solves the problems of complex construction process, long construction period and large disturbance to the surrounding of the existing pile support structure.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a low-disturbance three-dimensional frame supporting structure. Background Art

[0002] Existing pile support structures are mostly concrete cast-in-place piles, ground-anchored walls, precast piles, etc. The construction process is relatively complex, the construction period is long, the construction cost is high, and the disturbance to the surrounding area is large, which is not conducive to the rapid construction of the project.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] In order to overcome the defects of the prior art, a low-disturbance three-dimensional frame support structure is now provided to solve the problems of the existing pile support structure, such as complex construction process, long construction period and large disturbance to the surrounding area.

[0005] To achieve the above object, a low-disturbance three-dimensional frame support structure is provided, comprising:

[0006] Multiple rows of micropiles, each row of micropiles is arranged in a circle along the circumferential direction of the foundation pit;

[0007] A cap beam cast on the tops of the multiple rows of micropiles;

[0008] A plurality of reinforcing piles are arranged on the outer side of the plurality of rows of micro-piles away from the foundation pit, an extension portion is formed on the side of the crown beam, and the pile tops of the reinforcing piles are embedded in the extension portion;

[0009] The inclined piles are buried in the soil outside the multiple rows of micro-piles and are arranged obliquely, wherein the upper ends of the inclined piles are connected to the cap beams, and the lower ends of the inclined piles are arranged obliquely downward toward the outside of the foundation pit.

[0010] Furthermore, the diameter of the micropile is 170 mm.

[0011] Furthermore, the number of rows of the micropiles is 2 to 3.

[0012] Furthermore, the distance between the micropiles in an inner row of the plurality of rows of micropiles is greater than the distance between the micropiles in an outer row of the plurality of rows of micropiles.

[0013] Furthermore, it also includes a wire mesh, which is hung on the side of the inner row of micro-piles facing the foundation pit, and is covered with a sprayed concrete layer.

[0014] Furthermore, the micro pile includes an I-shaped steel frame and cement mortar coated on the I-shaped steel frame.

[0015] The beneficial effect of the utility model is that the low-disturbance three-dimensional frame support structure of the utility model has a simple construction process, low construction cost, short construction period, and little disturbance to the surrounding environment. A frame support system is formed by constructing multiple rows of micro piles, crown beams, reinforced piles and inclined piles, thereby forming a simple vertical truss space system structure, which fully exerts the axial force of the micro piles, improves the support capacity, and ensures the safety of the support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 It is a structural schematic diagram of a low-disturbance stereo frame support structure according to an embodiment of the utility model.

[0018] Figure 2 It is a top view of multiple rows of micropiles according to an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] Reference Figure 1 and Figure 2 As shown, the utility model provides a low-disturbance three-dimensional frame support structure, including: a micro pile 1, a crown beam 2, a cable-stayed pile 3, and a reinforcement pile 4.

[0022] There are multiple rows of micropiles 1. Each row of micropiles is arranged in a circle along the circumferential direction of the foundation pit. Each row of micropiles includes multiple micropiles.

[0023] In this embodiment, the multiple rows of micropiles include inner row micropiles 12 and outer row micropiles 11. The distance between the inner row micropiles 12 of the multiple rows of micropiles 1 is greater than the distance between the outer row micropiles 11 of the multiple rows of micropiles 1.

[0024] The cap beam 2 is cast on the top of the multiple rows of micropiles 1 .

[0025] The number of the reinforcing piles 4 is multiple. The reinforcing piles 4 are arranged on the outer side of the multiple rows of micro piles 1 away from the foundation pit. An extension part 21 is formed on the side of the crown beam 2. The pile top of the reinforcing pile 4 is embedded in the extension part 21.

[0026] See also Figure 2 As shown, multiple reinforcement piles are arranged at intervals along the circumferential direction of the foundation pit. Each reinforcement pile includes two reinforcement piles. The two reinforcement piles of each reinforcement pile are staggered with the micro piles in the outer row of micro piles.

[0027] The inclined pile 3 is arranged obliquely. The inclined pile 3 is buried in the soil outside the rows of micro piles 1. The upper end of the inclined pile 3 is connected to the crown beam 2. The lower end of the inclined pile 3 is arranged obliquely downward toward the outside of the foundation pit.

[0028] As a preferred embodiment, the diameter of the micro pile is 170 mm, and the number of rows of the micro pile is 2 to 3.

[0029] In this embodiment, the micro pile includes an I-shaped steel frame and cement mortar covering the I-shaped steel frame.

[0030] The micro-pile in the low-disturbance stereo frame support structure of the utility model has a vertebral diameter of 170mm and is stretched 7.5m. The I-shaped steel frame of the micro-pile adopts 12-type I-shaped steel and is poured with cement mortar (mixing ratio 1:3:0.7) to form a pile. A C30 reinforced concrete crown beam is set on the top of the micro-pile. The upper end of the I-shaped steel frame extends to the top of the crown beam.

[0031] The inclined piles are set outside the foundation pit. The inclined piles are made of 10# I-shaped steel frame, 6.0m long, arranged at m intervals horizontally, and poured with cement mortar to form piles.

[0032] The construction of micropiles and inclined-stayed piles uses high-pressure casing and pipe down-the-hole drilling to reduce disturbance to the stratum and ensure the quality of micropile drilling and grouting construction.

[0033] The low-disturbance three-dimensional frame support structure of the utility model further comprises a wire mesh, which is hung on the side of the inner row of micro-piles facing the foundation pit, and is coated with a sprayed concrete layer.

[0034] Specifically, the side walls of the foundation pit are all protected by C20 sprayed concrete with a thickness of 80mm and a finished wire mesh (mesh 60mm×60mm, diameter 1.6mm). The wire mesh is anchored with HRB400 steel bars with a length of 0.5m and a diameter of 12 with a spacing of 2.0m×2.0m. The sprayed mesh protection extends to the top of the slope ≥0.5m. The underground structure 5 is poured on the inner side of the foundation pit.

[0035] The low-disturbance three-dimensional frame support structure of the utility model has a simple construction process, low construction cost, short construction period, and little disturbance to the surrounding environment. A frame support system is formed by constructing multiple rows of micro piles, crown beams, reinforced piles and inclined piles, thereby forming a simple vertical truss space system structure, which fully exerts the axial force of the micro piles, improves the support capacity, and ensures the safety of the support structure.

[0036] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A low-disturbance three-dimensional frame support structure, characterized in that: include: Multiple rows of micropiles, each row of micropiles is arranged in a circle along the circumferential direction of the foundation pit; A cap beam cast on the tops of the multiple rows of micropiles; A plurality of reinforcing piles are arranged on the outer side of the plurality of rows of micro-piles away from the foundation pit, an extension portion is formed on the side of the crown beam, and the pile tops of the reinforcing piles are embedded in the extension portion; The inclined piles are buried in the soil outside the multiple rows of micro-piles and are arranged obliquely, wherein the upper ends of the inclined piles are connected to the cap beams, and the lower ends of the inclined piles are arranged obliquely downward toward the outside of the foundation pit.

2. The low-disturbance three-dimensional frame support structure according to claim 1, characterized in that: The diameter of the micropile is 170 mm.

3. The low-disturbance three-dimensional frame support structure according to claim 1, characterized in that: The number of rows of the micro piles is 2 to 3.

4. The low-disturbance three-dimensional frame support structure according to claim 3, characterized in that: The distance between the micropiles in an inner row of the plurality of micropiles is greater than the distance between the micropiles in an outer row of the plurality of micropiles.

5. The low-disturbance three-dimensional frame support structure according to claim 4, characterized in that: It also includes a wire mesh, which is hung on the side of the inner row of micro-piles facing the foundation pit, and is covered with a sprayed concrete layer.

6. The low-disturbance three-dimensional frame support structure according to claim 3, characterized in that: The micro pile comprises an I-shaped steel frame and cement mortar covering the I-shaped steel frame.

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