Concrete stand column structure and foundation structure for inspection pit
By setting portal-shaped steel bars and threading horizontal bars on the ground beams and precast columns of the inspection pit, the problems of low construction accuracy and efficiency of existing cast-in-place columns for inspection pits are solved, realizing an independently installed and highly efficient concrete column structure.
Patent Information
- Application Number
- CN202423064554.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The existing cast-in-place columns for inspection pits have problems such as small concrete compaction space, large deviation of reserved vertical reinforcement, weak and easily cracked concrete around the sleeve, and low construction accuracy and efficiency.
Precast columns and foundation beams are produced independently. By setting the first portal steel bar on the foundation beam of the inspection pit and the second portal steel bar on the precast column, the overlapping part is formed by the through hole, and the horizontal bar is inserted. Combined with the pouring of the post-pouring strip, independent installation and support are achieved.
It simplifies on-site management, improves construction efficiency and precision, enhances the compressive strength and deformation capacity of concrete columns, and reduces production costs.
Smart Images
Figure CN223523338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of capital construction, and particularly relates to a concrete column structure and foundation structure for inspection pit. BACKGROUND
[0002] At present, the cast-in-place column of the inspection pit has the problems of small concrete tamping space, large reserved vertical reinforcement deviation, poor positioning accuracy of the screw bolt sleeve spiral reinforcement of the fastener, weak concrete around the sleeve prone to cracking, and large amount of subsequent maintenance.
[0003] The existing prefabricated concrete column is mostly in the form of reserved reinforcement extending into the girder and integrally poured with the foundation girder. The column and the foundation cross operation, and the site management is difficult, and the construction efficiency is low. The prefabricated column is prone to be inclined during pouring of the girder concrete, and the construction precision is not easy to guarantee. UTILITY MODEL CONTENTS
[0004] The main purpose of the utility model is to provide a concrete column structure and foundation structure for an inspection pit to solve the problems of low construction efficiency and construction precision when installing a column on a girder in the prior art.
[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a concrete column structure for an inspection pit is provided, the girder of the inspection pit has a first door-shaped reinforcement arranged upward, the concrete column structure comprises: a prefabricated column comprising a column body and a second door-shaped reinforcement extending from below the column body; a post-cast strip poured between the lower surface of the prefabricated column and the girder, the second door-shaped reinforcement and the first door-shaped reinforcement have an overlapping portion in the height range of the post-cast strip, and the overlapping portion forms a through hole; a cross reinforcement arranged in the through hole, only one cross reinforcement can be inserted into the through hole in the height direction of the prefabricated column, the part of the first door-shaped reinforcement exposed to the girder, the part of the second door-shaped reinforcement exposed to the prefabricated column, and the cross reinforcement poured in the post-cast strip.
[0006] In one embodiment, the cross reinforcement is fixed on the first door-shaped reinforcement and the second door-shaped reinforcement by a binding structure.
[0007] In one embodiment, the cross reinforcement is horizontally and spacedly arranged.
[0008] In one embodiment, a fastener sleeve is arranged on the upper surface of the prefabricated column, a blind hole extending upward is arranged on the lower surface of the prefabricated column, and the distance between the hole bottom of the blind hole and the hole bottom of the fastener sleeve is greater than or equal to 50 mm.
[0009] In one embodiment, the second door-shaped reinforcement is spacedly arranged along the extension direction of the cross reinforcement.
[0010] In one embodiment, the side edges of the prefabricated column are arranged as rounded corners.
[0011] In one embodiment, the height of the through hole is h, and the diameter of the cross rib is d, and 3xd≥h≥1.5xd.
[0012] In one embodiment, the cross rib is perpendicular to the second door-shaped steel bar.
[0013] According to another aspect of the present application, a foundation structure is provided, comprising: a ground beam having a first door-shaped steel bar arranged upwardly thereon; and a concrete column structure, which is the concrete column structure described above.
[0014] According to a last aspect of the present application, a foundation structure is provided, comprising: a ground beam having a first door-shaped steel bar arranged upwardly thereon; and a concrete column structure, which is the concrete column structure described above, and the first door-shaped steel bar is in one-to-one correspondence with the second door-shaped steel bar of the concrete column structure.
[0015] The prefabricated column and the foundation (ground beam) are independently produced and operated, and the pouring of the post-cast strip can be performed when the prefabricated column is installed, so that the column and the foundation are avoided from being cross-operated, thereby simplifying the difficulty of on-site management and improving the construction efficiency.
[0016] In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. Hereinafter, the present application will be described in further detail with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0017] The drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:
[0018] Figure 1 a structure schematic view of an embodiment of the foundation structure according to the present application is shown; and
[0019] Figure 2 a structure schematic view of an embodiment of the foundation structure according to the present application is shown; and Figure 1 an enlarged structure schematic view of A of the foundation structure.
[0020] Among them, the above drawings include the following reference signs:
[0021] 1, through hole; 10, prefabricated column; 11, column body; 111, fastener sleeve; 112, blind hole; 12, second door-shaped steel bar; 20, post-cast strip; 30, cross rib; 40, ground beam; 41, first door-shaped steel bar; 50, concrete column structure. DETAILED DESCRIPTION
[0022] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0023] In order for those skilled in the technical field to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.
[0024] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0025] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof.
[0026] As Figure 1 and Figure 2As shown, the girder of the inspection pit has the first door-shaped steel bar (i.e. the first door-shaped steel bar 41 in the figure) arranged upward, the concrete column structure for the inspection pit of the embodiment comprises: a prefabricated column 10, a post-cast strip 20 and a cross bar 30. The prefabricated column 10 comprises a column body 11 and a second door-shaped steel bar 12 extending from below the column body 11. The post-cast strip 20 is cast between the lower surface of the prefabricated column 10 and the girder, the second door-shaped steel bar 12 and the first door-shaped steel bar have an overlapping portion in the height range of the post-cast strip 20, and the overlapping portion forms a through hole 1. The cross bar 30 is arranged in the through hole 1, the through hole 1 can only insert one cross bar 30 in the height direction of the prefabricated column 10, the part of the first door-shaped steel bar exposed from the girder, the part of the second door-shaped steel bar 12 exposed from the prefabricated column 10 and the cross bar 30 cast in the post-cast strip 20.
[0027] When the technical solution of the embodiment is applied, the prefabricated column 10 is first hoisted to the preset position in the field construction, so that the through hole 1 is formed between the second door-shaped steel bar 12 and the first door-shaped steel bar, then the cross bar 30 is arranged in the through hole 1, and finally the post-cast strip 20 is generated by field grouting. That is, when the technical solution of the embodiment is applied, the prefabricated column and the foundation (girder) are independently produced and operated, and when installed, the post-cast strip 20 is cast, which avoids the cross operation of the column and the foundation, thereby simplifying the difficulty of field management and improving the construction efficiency. In addition, the prefabricated column 10 can be effectively supported by the girder when hoisted to the preset position, thereby avoiding the inclination of the prefabricated column 10 and ensuring the construction accuracy.
[0028] It should be noted that the technical solution of the embodiment has at least the following advantages:
[0029] First, the cross bar 30 exists in the post-cast strip 20, which can play a role in transverse constraint on the internal concrete, improve the compressive strength and deformation capacity of the concrete, make the concrete less likely to break and peel off when bearing pressure, ensure the correct position of the door-shaped steel bar in the column, make it can uniformly and effectively bear the load, prevent the longitudinal steel from shifting during the process of casting concrete, and work with the concrete and the door-shaped steel bar to bear part of the shear force when the column is subjected to shear force, improve the shear performance of the column as a whole, and maintain the integrity of the column structure.
[0030] Second, since the bottom of the concrete column structure is a cast-in-place part, it has good fault tolerance when connected with the girder, allowing for pre-embedded construction deviation.
[0031] Third, the door-shaped steel bar connection is efficient and reliable, and the assembly construction operation is convenient and fast.
[0032] Fourth, for the track field, there is a pre-installed column on the height of the beam, if the thickness of the post-cast strip 20 is high, on the one hand, it leads to low installation efficiency, on the other hand, it leads to more materials required, resulting in high cost. The application of the technical scheme of the embodiment strictly controls the height of the overlapping area, so that the height of the overlapping area can only penetrate a horizontal rib 30, so that the height of the post-cast strip 20 is lower, the installation efficiency is improved, and the production cost is reduced.
[0033] In the embodiment, the horizontal rib 30 is fixed to the first and second door-shaped steel bars 12 by a binding structure. The above structure enables the horizontal rib 30 to remain in the preset position during on-site pouring without deviation, thereby ensuring the strength of the final post-cast strip 20.
[0034] As shown in Figure 1 and Figure 2 In the embodiment, the horizontal rib 30 is arranged horizontally and spaced apart. The above structure further improves the compressive strength, deformation capacity and shear performance of the concrete column structure.
[0035] As shown in Figure 1 In the embodiment, the upper surface of the prefabricated column 10 is provided with a fastener sleeve 111, and the lower surface of the prefabricated column 10 is provided with an upwardly extending blind hole 112, the distance between the hole bottom of the blind hole 112 and the hole bottom of the fastener sleeve 111 is greater than or equal to 50mm. The above structure on the one hand makes the weight of the prefabricated column 10 lighter, saves materials and reduces cost; on the other hand, it can ensure the support force on the track.
[0036] In the embodiment, the second door-shaped steel bar 12 is arranged along the extension direction of the horizontal rib 30. The above structure, on the one hand, acts together with the concrete to make the concrete column structure more stable to support the superstructure (track); on the other hand, when the column is subjected to lateral force (such as horizontal force of earthquake, wind load, etc.), more second door-shaped steel bars 12 can resist the tensile force generated by bending to prevent the concrete column structure from being damaged prematurely.
[0037] In the embodiment, the side edges of the prefabricated column 10 are provided with rounded corners to avoid the impact of transportation and installation.
[0038] As shown in Figure 2 In the embodiment, the horizontal rib 30 is perpendicular to the second door-shaped steel bar 12. The above structure further improves the compressive strength, deformation capacity and shear performance of the concrete column structure.
[0039] In one embodiment, the height of the through hole is h, and the diameter of the cross rib is d, and 3xd >= h >= 1.5xd. The above structure can ensure that only one row of steel bars arranged horizontally can be inserted into the through hole in the vertical direction, thereby improving the installation efficiency and reducing the production cost.
[0040] In the embodiment, the length of the post-cast strip 20 is greater than the length of the prefabricated column 10, and the prefabricated column 10 is located in the middle of the post-cast strip 20. The above structure makes the concrete vibration effect better than the conventional center grouting. It should be noted that, Figure 1 The width of the prefabricated column 10 and the post-cast strip 20 is shown, and the length direction of the prefabricated column 10 and the post-cast strip 20 is perpendicular to the width direction.
[0041] As Figure 1 shown, the application also provides a foundation structure, and an embodiment of the foundation structure according to the application comprises: a ground beam 40 and a concrete column structure 50, wherein the ground beam 40 is provided with a first door-shaped steel bar 41 upward; and the concrete column structure 50 is the above-mentioned concrete column structure. Since the above-mentioned concrete column structure has the advantages of improving the construction efficiency and ensuring the construction precision, the foundation structure with the same also has the above-mentioned advantages.
[0042] In the embodiment, the first door-shaped steel bar 41 is one-to-one corresponding to the second door-shaped steel bar 12 of the concrete column structure 50. The above structure further improves the compressive strength, deformation capacity and shear performance of the concrete column structure.
[0043] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:
[0044] 1. Avoids the cross operation of the site foundation beam construction and the prefabricated column installation, and the clear and simple interface division and process of civil engineering and track construction, and the construction does not interfere with each other, which is convenient for construction organization and improves the construction efficiency;
[0045] 2. The door-shaped rib connection is efficient and reliable, and the assembly construction operation is convenient and fast;
[0046] 3. The design has a cast-in-place adjustment part, the connection form has good fault tolerance, and allows the pre-embedded construction deviation;
[0047] 4. The prefabricated column is designed to be hollow and light in weight, which saves materials, reduces the cost, and is convenient for installation and construction;
[0048] 5. The corners of the column are designed to be round, which avoids the collision during transportation and installation to cause the corner loss.
[0049] The foregoing description, for purposes of explanation, sets forth specific values and arrangements of components and steps that are subject to many options for implementation, but are not intended to be limiting of the scope of the present application. It will be apparent to those skilled in the art that specific recognized techniques, methods and apparatuses known or developed in the future can be used, but should be considered as part of the present application, where appropriate. In all examples shown and discussed herein, any specific values should be interpreted only as examples and not as limitations. Other examples of the exemplary embodiments can therefore have different values. It is to be noted that like reference numerals and letters refer to like items in the several views of the drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.
[0050] For purposes of the description hereinafter, spatial or directional terms, such as "above", "below", "up", "down", "left", "right", "horizontal", "vertical", and the like, relate to the application as it is shown in the drawings, but it is to be understood that the application can assume various alternative orientations and, accordingly, such terms are not to be taken as limitations of the present application's scope, unless otherwise noted. Terms concerning attachments, such as "connected", "supported", and the like, are to be construed as permanent or fixed connections unless otherwise equipped as a removable connection or contrarily indicated by context. Terms such as "including", "comprising", "consisting of", and the like, are to be construed according to variations on the number of steps or components as would be understood by one of ordinary skill in the art. The terms "coupled" and "connected", along with derivatives thereof, are intended to imply an indirect or direct connection in which the elements that are coupled or connected are electrically or physically interconnected.
[0051] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated by the orientation or position relationship based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite indication, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.
[0052] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A concrete column structure for an inspection pit having a first door-shaped reinforcement provided upward on a floor beam of the inspection pit, characterized by, The concrete column structure comprises: a prefabricated column (10) comprising a column body (11) and a second door-shaped reinforcement (12) extending downward from the column body (11); a post-cast strip (20) cast between the lower surface of the prefabricated column (10) and the ground beam, the second door-shaped reinforcement (12) and the first door-shaped reinforcement having an overlapping portion within the height range of the post-cast strip (20), and the overlapping portion forming a through hole (1); a cross reinforcement (30) passing through the through hole (1), the through hole (1) being capable of inserting only one cross reinforcement (30) in the height direction of the prefabricated column (10), the portion of the first door-shaped reinforcement exposed to the ground beam, the portion of the second door-shaped reinforcement (12) exposed to the prefabricated column (10), and the cross reinforcement (30) cast in the post-cast strip (20).
2. The concrete column structure for checking a pit according to claim 1, wherein The cross reinforcement (30) is fixed to the first door-shaped reinforcement and the second door-shaped reinforcement (12) by a binding structure.
3. The concrete column structure for checking a pit according to claim 1, characterized by, The cross reinforcement (30) is arranged horizontally and spaced apart.
4. The concrete column structure for checking a pit according to claim 1, characterized by, A fastener sleeve (111) is arranged on the upper surface of the prefabricated column (10), and a blind hole (112) extending upward is arranged on the lower surface of the prefabricated column (10), the distance between the hole bottom of the blind hole (112) and the hole bottom of the fastener sleeve (111) being greater than or equal to 50 mm.
5. The concrete column structure for checking a pit according to claim 1, wherein The second door-shaped reinforcement (12) is arranged spaced apart along the extension direction of the cross reinforcement (30).
6. The concrete column structure for checking a pit according to claim 1, wherein The side edges of the prefabricated column (10) are arranged as rounded corners.
7. The concrete column structure for checking a pit according to claim 1, wherein The height value of the through hole (1) is h, and the diameter of the cross reinforcement (30) is d, 3×d≥h≥1.5×d.
8. The concrete column structure for checking a pit according to claim 1, wherein The cross reinforcement (30) is perpendicular to the second door-shaped reinforcement (12).
9. A foundation structure comprising: a ground beam (40) having a first door-shaped reinforcement (41) arranged upward thereon; a concrete column structure (50), characterized in that the concrete column structure (50) is the concrete column structure according to any one of claims 1 to 8.
10. A foundation structure comprising: a ground beam (40) having a first door-shaped reinforcement (41) arranged upward thereon; a concrete column structure (50), characterized in that the concrete column structure (50) is the concrete column structure according to claim 6, and the first door-shaped reinforcement (41) is a plurality of door-shaped reinforcements corresponding one-to-one to the second door-shaped reinforcements (12) of the concrete column structure (50).