Deep foundation pit inner support assembly type support changing construction tool

Abstract

The utility model relates to the technical field of deep foundation pit support replacement construction, in particular to a deep foundation pit inner support assembly type support replacement construction tool which comprises a supporting pile, an upper force transmission belt, a lower pre-machined steel pipe assembly and a concrete pier, and an assembly type inclined support is fixedly connected between the upper pre-machined steel pipe assembly and the lower pre-machined steel pipe assembly. The split mounting type inclined strut is composed of an upper supporting rod arranged in a rectangular mode and a lower supporting rod arranged in a rectangular mode, a groove is formed in one side of the upper supporting rod, and through the structure composed of the upper supporting rod, the lower supporting rod, the square hoop and the like, the lower supporting rod is pushed to enable the protruding block to slide on the inner side of the groove, and the protruding block can slide on the inner side of the groove. The length of the upper supporting rod and the length of the lower supporting rod when the upper supporting rod and the lower supporting rod are spliced together are changed, then the square hoop is connected to the outer sides of the connecting plate and the lower supporting rod in a sleeving mode, the upper supporting rod and the lower supporting rod are used for replacing a hollow outer pipe and an inner pipe with the small pipe diameter, and therefore the spliced inclined strut can more stably act on the inner sides of foundation pits with different depths.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation pit support replacement construction, in particular to an assembled support replacement construction tool for deep foundation pit supports. Background Art

[0002] Replacement of support means that after the structural construction is completed under the initial steel support conditions, the initial steel support form affects the subsequent structural construction, so the initial steel support needs to be replaced to facilitate the subsequent structural construction. Generally, the replacement of support is carried out on the previously completed structure. Prefabricated replacement of support construction tools are more common workpieces in the internal support of deep foundation pits.

[0003] The Chinese utility model patent "CN210459229U discloses a prefabricated support replacement construction tool for deep foundation pit internal support" aims at the problem that the support structure is very easy to deform excessively during the dismantling process of the internal support and supporting pile support methods. During the dismantling process, a rotatable prefabricated support replacement component is set, including a prefabricated steel pipe diagonal support component arranged within the projection range of the pre-removed internal support, the basement outer wall, the foundation pit support structure, and the concrete pier connected to the bottom plate or the floor slab. The dismantling reinforcement components composed of these structures are jointly stressed to reduce the deformation of the foundation pit. However, when the prefabricated steel pipe diagonal support component is adjusted in length, the inner tube is usually extracted from the inner side of the outer tube, resulting in the outer tube usually being in a hollow state, and the diameter of the inner tube is usually smaller than the diameter of the outer tube, which may affect the support effect. Therefore, in view of the above problem, an prefabricated support replacement construction tool for deep foundation pit internal support is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an assembled support replacement construction tool for deep foundation pit support to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A prefabricated support replacement construction tool for deep foundation pit supports, comprising support piles, an upper force transmission belt, a fertilizer trough, a lower force transmission belt, an outer wall, a foundation slab, a pre-removed inner support, an upper pre-processed steel pipe assembly, a lower pre-processed steel pipe assembly and a concrete pier, wherein an assembled diagonal brace is fixedly connected between the upper pre-processed steel pipe assembly and the lower pre-processed steel pipe assembly, and the assembled diagonal brace is composed of an upper support rod arranged in a rectangular shape and a lower support rod arranged in a rectangular shape, a groove is provided on one side of the upper support rod, a protrusion is slidably connected to the inner side of the groove, the protrusion is fixedly connected to one side of the lower support rod, and a connecting plate is fixedly connected to one end of the upper support rod, and square clamps are provided on the outer sides of the connecting plate and the lower support rod.

[0007] Preferably, a damping pad is fixedly connected to one side of the upper support rod where the groove is formed, a through groove is formed on the inner side of the damping pad, the protrusion is arranged on the inner side of the through groove, and the damping pad is fitted with the lower support rod.

[0008] Preferably, a spring is provided on the inner side of the groove, and two ends of the spring are fixedly connected to the inner wall of the groove and the protrusion respectively.

[0009] Preferably, the plurality of square hoops are evenly arranged, and the square hoops fit tightly with the connecting plate and the lower support rod.

[0010] Preferably, the support piles are arranged on one side of the upper power transmission belt, the fertilizer trough and the lower power transmission belt, and the upper power transmission belt, the fertilizer trough and the lower power transmission belt are arranged vertically and vertically in parallel, the outer wall is arranged on the side of the upper power transmission belt and the fertilizer trough away from the support piles, and the foundation floor is arranged on the side of the lower power transmission belt away from the support piles, one side of the outer wall is fixedly connected to the upper pre-processed steel pipe assembly, the lower pre-processed steel pipe assembly is fixedly connected to the concrete pier, and the concrete pier is fixed to the upper end surface of the foundation floor.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, a structure consisting of an upper support rod, a groove, a protrusion, a lower support rod, a connecting plate and a square hoop is provided, and the upper support rod, the groove, the protrusion, the lower support rod and the connecting plate form a new assembled diagonal support. When the length of the assembled diagonal support needs to be changed, the lower support rod is pushed to make the protrusion slide inside the groove. At this time, one spring is compressed by the protrusion and the other spring is stretched by the protrusion, thereby changing the length of the upper support rod and the lower support rod when they are spliced ​​together. Then the square hoop is sleeved on the outside of the connecting plate and the lower support rod, and the connecting plate and the lower support rod are positioned. The upper support rod and the lower support rod are used instead of the hollow outer tube and the inner tube with a smaller diameter, so that the assembled diagonal support can act more stably on the inside of foundation pits of different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the square clamp of the utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of the lower support rod of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the upper support rod of the utility model.

[0017] In the figure: 1. Support piles; 2. Upper force transmission belt; 3. Fertilizer trough; 4. Lower force transmission belt; 5. External wall; 6. Foundation slab; 7. Pre-removed internal support; 8. Upper pre-processed steel pipe assembly; 9. Assembled diagonal brace; 901. Upper support rod; 902. Groove; 903. Bump; 904. Lower support rod; 905. Connecting plate; 906. Spring; 10. Lower pre-processed steel pipe assembly; 11. Concrete pier; 12. Damping pad; 13. Through groove; 14. Square clamp. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0021] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0022] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A prefabricated support replacement construction tool for deep foundation pit supports, comprising support piles 1, an upper force transmission belt 2, a fertilizer trough 3, a lower force transmission belt 4, an outer wall 5, a foundation slab 6, a pre-removed inner support 7, an upper pre-processed steel pipe assembly 8, a lower pre-processed steel pipe assembly 10 and a concrete pier 11, an assembled diagonal brace 9 is fixedly connected between the upper pre-processed steel pipe assembly 8 and the lower pre-processed steel pipe assembly 10, the assembled diagonal brace 9 is composed of an upper support rod 901 arranged in a rectangular shape and a lower support rod 904 arranged in a rectangular shape, a groove 902 is provided on one side of the upper support rod 901, a protrusion 903 is slidably connected to the inner side of the groove 902, the protrusion 903 is fixedly connected to one side of the lower support rod 904, a connecting plate 905 is fixedly connected to one end of the upper support rod 901, and a square clamp 14 is provided on the outer side of the connecting plate 905 and the lower support rod 904.

[0026] The upper support rod 901 has a groove 902 on one side thereof, and a damping pad 12 is fixedly connected thereto. A through groove 13 is provided on the inner side of the damping pad 12, and a protrusion 903 is arranged on the inner side of the through groove 13. The damping pad 12 fits the lower support rod 904. This arrangement enables the installation of the damping pad 12, thereby increasing the friction between the upper support rod 901 and the lower support rod 904. After the positioning of the connecting plate 905 and the lower support rod 904 is completed, relative displacement is not easy to occur, and the arrangement of the through groove 13 does not affect the movement of the protrusion 903. A spring 906 is arranged on the inner side of the groove 902, and the two ends of the spring 906 are fixedly connected to the inner wall of the groove 902 and the protrusion 903 respectively. This arrangement enables the installation of the spring 906, and the spring 906 can protect the protrusion 903 to a certain extent. A plurality of square clamps 14 are evenly arranged, and the square clamps 14 and the connecting plate 905 are connected. And the lower support rod 904 fits tightly, this arrangement allows multiple square clamps 14 to stably position the connecting plate 905 and the lower support rod 904; the supporting pile 1 is arranged on one side of the upper power transmission belt 2, the fertilizer trough 3 and the lower power transmission belt 4, and the upper power transmission belt 2, the fertilizer trough 3 and the lower power transmission belt 4 are arranged in parallel up and down, the outer wall 5 is arranged on the side of the upper power transmission belt 2 and the fertilizer trough 3 away from the supporting pile 1, and the foundation bottom plate 6 is arranged on the side of the lower power transmission belt 4 away from the supporting pile 1, one side of the outer wall 5 is fixedly connected to the upper pre-processed steel pipe assembly 8, and the lower pre-processed steel pipe assembly 10 is fixedly connected to the concrete pier 11, and the concrete pier 11 is fixed on the upper end surface of the foundation bottom plate 6. This arrangement makes it possible to achieve equal positioning of the supporting pile 1, the upper power transmission belt 2, the fertilizer trough 3, the lower power transmission belt 4, the outer wall 5, the foundation bottom plate 6, the pre-removed internal support 7, the upper pre-processed steel pipe assembly 8, the lower pre-processed steel pipe assembly 10 and the concrete pier 11.

[0027] Workflow: Place the support pile 1 inside the foundation pit according to the design requirements, then lay out and position the concrete pier 11, and then tie the foundation slab 6 and the pre-removed inner support 7 reinforcement bars separately according to the design requirements. When tying the reinforcement bars of the foundation slab 6 or the pre-removed inner support 7, tie the vertical reinforcement bars of the concrete column pier together to ensure that the anchorage length of the reinforcement bars of the concrete pier 11 meets the design requirements. After the reinforcement tying is completed, pour concrete on the foundation slab 6 and the pre-removed inner support 7, and then clean the concrete surfaces of the foundation slab 6 and the pre-removed inner support 7. The top of the foundation slab 6 is tied with the steel bars of the concrete pier 11, and then concrete is poured on the steel bars of the concrete pier 11. When the concrete reaches the required strength, the pre-processed steel pipe assembly 10 is installed on the embedded bolts of the concrete pier 11, and then the steel bars of the basement exterior wall 5 are tied according to the design requirements. After the exterior wall 5 reaches the required strength, a lower force transfer belt 4 is set at the bottom of the fertilizer trough 3. The thickness of the lower force transfer belt 4 is the same as that of the foundation slab 6. Then the fertilizer trough 3 is backfilled. After the bottom of the steel plate on one side of the backfilled end steel pipe reaches the elevation, a force transfer belt 2 is set on the top of the fertilizer trough 3, and the outer wall 5 is connected to the outer wall 5. After the concrete reaches the required strength, the pre-processed steel pipe assembly 8 is installed on the embedded bolts of the basement outer wall 5, and then the assembled diagonal brace 9 is connected and fixed between the upper pre-processed steel pipe assembly 8 and the lower pre-processed steel pipe assembly 10. Before that, the assembled diagonal brace 9 is changed to the required length as required, and the lower support rod 904 is pushed to make the protrusion 903 slide inside the groove 902. At this time, a spring 906 is compressed by the protrusion 903, and a spring 906 is stretched by the protrusion 903, thereby changing the length of the upper support rod 901 and the lower support rod 904 when they are spliced ​​together to achieve the required After the required length is reached, the square clamp 14 is sleeved on the outer side of the connecting plate 905 and the lower support rod 904 to position the connecting plate 905 and the lower support rod 904. The damping pad 12 is arranged between the upper support rod 901 and the lower support rod 904, so that the friction between the upper support rod 901 and the lower support rod 904 is increased. After the positioning of the connecting plate 905 and the lower support rod 904 is completed, relative displacement is not easy to occur, and the arrangement of the through groove 13 will not affect the movement of the protrusion 903. When the concrete strength of the above-mentioned concrete components meets the design requirements, the pre-removed inner support 7 can be removed.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep foundation pit support assembly type support replacement construction tool, comprising support piles (1), an upper force transmission belt (2), a fertilizer trough (3), a lower force transmission belt (4), an outer wall (5), a foundation bottom plate (6), a pre-removed inner support (7), an upper pre-processed steel pipe assembly (8), a lower pre-processed steel pipe assembly (10) and a concrete pier (11), characterized in that: An assembled diagonal brace (9) is fixedly connected between the upper pre-processed steel pipe assembly (8) and the lower pre-processed steel pipe assembly (10), and the assembled diagonal brace (9) is composed of an upper brace rod (901) arranged in a rectangular shape and a lower brace rod (904) arranged in a rectangular shape. A groove (902) is provided on one side of the upper brace rod (901), and a protrusion (903) is slidably connected to the inner side of the groove (902). The protrusion (903) is fixedly connected to one side of the lower brace rod (904). A connecting plate (905) is fixedly connected to one end of the upper brace rod (901), and square clamps (14) are provided on the outer sides of the connecting plate (905) and the lower brace rod (904).

2. The deep foundation pit support assembly type support replacement construction tooling according to claim 1 is characterized by: A damping pad (12) is fixedly connected to one side of the upper support rod (901) on which a groove (902) is formed, a through groove (13) is formed on the inner side of the damping pad (12), the protrusion (903) is arranged on the inner side of the through groove (13), and the damping pad (12) is fitted with the lower support rod (904).

3. The deep foundation pit support assembly type support replacement construction tool according to claim 1, characterized in that: A spring (906) is provided on the inner side of the groove (902), and two ends of the spring (906) are fixedly connected to the inner wall of the groove (902) and the protrusion (903) respectively.

4. The deep foundation pit support assembly type support replacement construction tooling according to claim 1 is characterized by: The plurality of square hoops (14) are evenly arranged, and the square hoops (14) are tightly fitted to the connecting plate (905) and the lower support rod (904).

5. The deep foundation pit support assembly type support replacement construction tooling according to claim 1 is characterized by: The support pile (1) is arranged on one side of the upper power transmission belt (2), the fertilizer trough (3) and the lower power transmission belt (4); the upper power transmission belt (2), the fertilizer trough (3) and the lower power transmission belt (4) are arranged vertically side by side; the outer wall (5) is arranged on the side of the upper power transmission belt (2) and the fertilizer trough (3) away from the support pile (1); the foundation bottom plate (6) is arranged on the side of the lower power transmission belt (4) away from the support pile (1); one side of the outer wall (5) is fixedly connected to the upper pre-processed steel pipe assembly (8); the lower pre-processed steel pipe assembly (10) is fixedly connected to the concrete pier (11); and the concrete pier (11) is fixed to the upper end surface of the foundation bottom plate (6).

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