Concrete stand column structure for inspection pit, track assembly and foundation structure

Abstract

The utility model provides a concrete stand column structure, a track assembly and a foundation structure for an inspection pit, the concrete stand column structure comprises a prefabricated stand column which comprises a stand column body and a plurality of vertical reinforcing steel bars extending from the lower part of the stand column body, and the vertical reinforcing steel bars are positioned on the inner side of a door-shaped reinforcing steel bar; reinforcing steel bar blocks are welded between the vertical reinforcing steel bars and the bottom surface of the stand column body; the post-cast strip is cast between the lower surface of the prefabricated stand column and the ground beam, and the vertical steel bars and the door-shaped steel bars have overlapped parts within the height range of the post-cast strip; the stirrups are arranged on the circumferential outer sides of the door-shaped steel bars and the vertical steel bars in a hooping mode so that the door-shaped steel bars and the vertical steel bars can be hooped tightly, steel bar blocks are welded to the roots of the vertical steel bars, and the parts, exposed out of the ground beam, of the door-shaped steel bars, the parts, exposed out of the prefabricated stand columns, of the vertical steel bars, the steel bar blocks and the stirrups are poured into the post-cast strip. By means of the technical scheme, the problems that in the prior art, when the stand column is installed on the ground beam, construction efficiency and construction precision are low can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of capital construction, and particularly relates to a concrete column structure for inspection pit, track assembly and foundation structure. 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 thread of the fastener bolt sleeve pipe, weak concrete around the sleeve pipe and easy cracking, and large amount of subsequent maintenance.

[0003] The existing prefabricated concrete column is mostly in the form of reserved steel bar extending into the ground beam and integrally poured with the foundation ground beam, which has the problems of difficult column and foundation cross operation, difficult on-site management and low construction efficiency, and the prefabricated column is prone to be inclined during pouring of the ground beam 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 for inspection pit, track assembly and foundation structure to solve the problems of low construction efficiency and construction precision when installing the column on the ground beam 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 inspection pit is provided, the ground beam of the inspection pit has a door-shaped steel bar arranged upward, the concrete column structure comprises: a prefabricated column comprising a column body and a plurality of vertical steel bars extending from the lower part of the column body, the vertical steel bars are located on the inner side of the door-shaped steel bar; a post-cast strip poured between the lower surface of the prefabricated column and the ground beam, the vertical steel bars and the door-shaped steel bar have an overlapping part in the height range of the post-cast strip; a stirrup tightly wrapped around the door-shaped steel bar and the vertical steel bar to tightly wrap the door-shaped steel bar and the vertical steel bar, the root of the vertical steel bar is welded with a steel block, the part of the door-shaped steel bar exposed from the ground beam, the part of the vertical steel bar exposed from the prefabricated column, the steel block and the stirrup are poured in the post-cast strip.

[0006] In one embodiment, the stirrups are a plurality of stirrups arranged at intervals along the height direction of the post-cast strip.

[0007] In one embodiment, the distance between the adjacent two stirrups is between 50 to 300mm.

[0008] In one embodiment, the upper surface of the column body is provided with a fastener sleeve pipe, the lower surface of the column body is provided with a blind hole extending upward, and the distance between the hole bottom of the blind hole and the hole bottom of the fastener sleeve pipe is greater than or equal to 50mm.

[0009] In one embodiment, the side edges of the column body are provided with rounded corners.

[0010] In one embodiment, the length of the post-cast strip is greater than the length of the prefabricated column, and the prefabricated column is located in the middle of the post-cast strip.

[0011] According to another aspect of the present application, there is provided a track assembly, comprising: a plurality of concrete column structures, the concrete column structure being the concrete column structure described above; a steel rail, fixedly arranged on the prefabricated column of the plurality of concrete column structures.

[0012] According to another aspect of the present application, there is provided a track assembly, comprising: a plurality of concrete column structures, the concrete column structure being the concrete column structure described above; a steel rail; a fastener, the fastener being arranged in the fastener sleeve of the prefabricated column of the concrete column structure to fix the steel rail on the prefabricated column.

[0013] In one embodiment, the steel rails are two parallel rails, the plurality of concrete column structures are divided into two groups equal to the number of the steel rails, each group of concrete column structures supports one steel rail, and the track assembly further comprises: a backing plate, the backing plate being arranged between the lower surface of the steel rail and the upper surface of the column body of the prefabricated column, the fastener fixing the steel rail on the prefabricated column via the backing plate, the upper surface of the backing plate being an inclined surface, the inclined surfaces of the backing plates corresponding to the two steel rails are inclined in opposite directions and downward from the outside to the inside.

[0014] In one embodiment, the angle between the inclined surface and the upper surface of the column body is α, and tanα = 1:40.

[0015] According to a last aspect of the present application, there is provided a foundation structure, comprising: a ground beam, the ground beam having a plurality of door-shaped steel bars arranged upward; a concrete column structure, the concrete column structure being the concrete column structure described above.

[0016] The technical scheme of the present application is applied to on-site construction, the prefabricated column is hoisted to a preset position, at this time, the plurality of vertical steel bars are located on the inner side of the door-shaped steel bars in the direction of the cross beam of the door-shaped steel bars, and the overlapping height of the vertical steel bars and the door-shaped steel bars reaches a preset value. The stirrup is arranged on the circumferential outer side of the door-shaped steel bars, so that the door-shaped steel bars and the vertical steel bars are tightly attached, and finally on-site grouting is performed to generate a post-cast strip. That is, the technical scheme of the present application is applied, the prefabricated column and the foundation (ground beam) are independently produced and operated, and when installed, the post-cast strip is poured, thereby avoiding cross operation of the column and the foundation, simplifying the difficulty of on-site management, and improving the construction efficiency. In addition, the prefabricated column can be effectively supported by the ground beam when hoisted to the preset position, thereby avoiding tilting of the prefabricated column and ensuring construction accuracy.

[0017] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application, and are incorporated by reference in their entirety. The embodiments of the present application, together with its advantages, can be understood by reference to the following description, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A structural schematic view of an embodiment of a track assembly according to the present application is shown installed on a ground beam;

[0020] Figure 2 An enlarged structural schematic view of A of the track assembly of Figure 1 ; and

[0021] Figure 3 An enlarged structural schematic view of B of the track assembly of Figure 1 .

[0022] Wherein, the above drawings include the following reference signs:

[0023] 10, prefabricated column; 11, column body; 111, fastener sleeve; 112, blind hole; 12, vertical steel bar; 20, post-cast strip; 30, stirrup; 40, concrete column structure; 50, steel rail; 60, pad plate; 61, inclined surface; 70, ground beam; 71, door-shaped steel bar; 80, fastener. DETAILED DESCRIPTION

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0025] In order to make the person in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person in the art without creative labor should belong to the protection scope of the present application.

[0026] It should be noted that the terms "first", "second", and the like in the description and in the claims of the utility model of the present application and the above-mentioned drawings are used to distinguish similar objects and do not 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 in order to describe the embodiments of the utility model described herein. 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 including 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 not clearly listed or inherent to these processes, methods, products or devices.

[0027] 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 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 combinations thereof.

[0028] As Figure 1 and Figure 2 As shown in the embodiment, the girder of the inspection pit has an upwardly arranged door-shaped steel bar, and the concrete column structure of the inspection pit comprises a prefabricated column 10, a post-cast strip 20 and a stirrup 30. The prefabricated column 10 comprises a column body 11 and a plurality of vertical steel bars 12 extending from below the column body 11, and the vertical steel bars 12 are located on the inner side of the corresponding door-shaped steel bar. The post-cast strip 20 is cast between the lower surface of the prefabricated column 10 and the girder, and the vertical steel bars 12 and the door-shaped steel bar have overlapping portions within the height range of the post-cast strip 20. The stirrup 30 is arranged on the circumferential outer side of the door-shaped steel bar and the vertical steel bars 12 to tighten the door-shaped steel bar and the vertical steel bars 12, and the root of the vertical steel bars 12 is welded with a steel bar block. The part of the door-shaped steel bar exposed to the girder, the part of the vertical steel bars 12 exposed to the prefabricated column 10, the steel bar block and the stirrup 30 are cast in the post-cast strip 20.

[0029] The prefabricated column 10 is hoisted to the preset position in the field construction, at this time, the plurality of vertical steel bars 12 are located on the inner side of the door-shaped steel bar 71 in the direction of the crossbeam of the door-shaped steel bar 71, and the overlapping height of the vertical steel bar 12 and the door-shaped steel bar 71 reaches the preset value. The stirrup 30 is then wrapped on the circumferential outer side of the door-shaped steel bar 71, so that the door-shaped steel bar 71 is tightly attached to the vertical steel bar 12, and finally the post-cast strip 20 is generated by field grouting. That is, the prefabricated column and the foundation (ground beam) are independently produced and operated by applying the technical solution of the embodiment, and the pouring of the post-cast strip 20 is performed during installation, thereby avoiding the cross operation of the column and the foundation, simplifying the difficulty of field management, and improving the construction efficiency. In addition, the prefabricated column 10 can be effectively supported by the ground beam when hoisted to the preset position, thereby avoiding the inclination of the prefabricated column 10 and ensuring the construction accuracy.

[0030] It should be noted that the technical solution of the embodiment has at least the following advantages:

[0031] First, since the bottom of the concrete column structure is a cast-in-place part, it has good fault tolerance when connected with the ground beam, allowing for pre-embedded construction deviations.

[0032] Second, the door-shaped steel bar connection is efficient and reliable, and the assembly construction operation is convenient and fast.

[0033] Third, the root of the vertical steel bar 12 is welded with a steel block, which can make the vertical steel bar 12 extend vertically as much as possible and can also strengthen the strength of the vertical steel bar 12.

[0034] Fourth, the stirrup 30 exists in the post-cast strip 20. The stirrup 30 can play a horizontal constraint role 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 pouring of concrete and other processes, and work with the concrete and steel to bear part of the shear force when the column is subjected to shear force, thereby improving the shear performance of the column as a whole and maintaining the integrity of the column structure.

[0035] As shown in Figure 1 and Figure 2 in the embodiment, the stirrup 30 is arranged in multiple intervals along the height direction of the post-cast strip 20. The above structure can further enhance the above fourth advantage.

[0036] As shown in Figure 1 and Figure 2As shown, in the embodiment, the distance between two adjacent stirrups 30 is between 50 to 300 mm. If the distance between two stirrups 30 is too small, the uniformity of the concrete in the post-cast strip 20 will be affected, and if the distance between two stirrups 30 is too large, the fourth advantage mentioned above cannot be sufficiently enhanced.

[0037] As shown in FIG. 1, the post-cast strip 20 is arranged between two adjacent precast columns 10, and the post-cast strip 20 is arranged in the middle of the two precast columns 10. Figure 1 As shown, in the embodiment, the upper surface of the post body 11 is provided with a fastener sleeve 111, and the lower surface of the post body 11 is provided with an upwardly extending blind hole 112, and 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 50 mm. The above structure makes the precast column 10 lighter in weight, saves materials, and reduces the cost, and at the same time, ensures the support force on the rail.

[0038] In the embodiment, the side edges of the post body 11 are provided with rounded corners to avoid the corners being knocked off during transportation and installation.

[0039] In the embodiment, the length of the post-cast strip 20 is greater than the length of the precast column 10, and the precast 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 As shown, the width of the precast column 10 and the post-cast strip 20 is shown, and the length direction of the precast column 10 and the post-cast strip 20 is perpendicular to the width direction.

[0040] The application also provides a track assembly, as shown in Figure 1 and Figure 3 As shown, the embodiment of the track assembly according to the application comprises a plurality of concrete column structures 40 and a rail 50. The concrete column structure 40 is the concrete column structure described above, and the rail 50 is fixedly arranged on the precast column 10 of the plurality of concrete column structures 40. Since the concrete column structure has the advantages of improving construction efficiency and ensuring construction precision, the track assembly having the same also has the advantages.

[0041] As shown in FIG. 1, the post-cast strip 20 is arranged between two adjacent precast columns 10, and the post-cast strip 20 is arranged in the middle of the two precast columns 10. Figure 1 and Figure 3 As shown, in the embodiment, the track assembly further comprises a fastener 80, which is arranged in the fastener sleeve 111 of the precast column 10 of the concrete column structure 40 to fix the rail 50 on the precast column 10. The above structure is simple, and the reliability of the rail 50 after installation is high.

[0042] As shown in FIG. 1, the post-cast strip 20 is arranged between two adjacent precast columns 10, and the post-cast strip 20 is arranged in the middle of the two precast columns 10. Figure 1 and Figure 3As shown, in this embodiment, there are two parallel rails 50. Multiple concrete column structures 40 are divided into two groups, the same number as the rails 50. Each group of concrete column structures 40 supports one rail 50. The track assembly also includes a pad 60, which is disposed between the lower surface of the rail 50 and the upper surface of the column body 11 of the precast column 10. Fasteners 80 fix the rail 50 to the pad 60 and onto the precast column 10. The upper surface of the pad 60 is an inclined surface 61. The inclined surfaces 61 of the pads 60 corresponding to the two rails 50 have opposite inclination directions and slope downwards from the outside to the inside. This structure concentrates the vertical pressure of the vehicle wheelset at the center of the rail top, enhancing the rail head's resistance to contact fatigue stress, reducing rail head plastic deformation, mitigating uneven rail head wear, and extending service life. Simultaneously, with the contact position centered, the load eccentricity is reduced, the rail web stress is lowered, the lateral stability of the rail is improved, and rail rollover is prevented.

[0043] Preferably, in this embodiment, the angle between the inclined surface 61 and the upper surface of the column body 11 is α, tanα=1:40.

[0044] like Figure 1 As shown, this application also provides a basic structure, which includes, according to an embodiment of the basic structure of this application, a ground beam 70 and a concrete column structure 40, wherein the ground beam 70 has upwardly arranged portal-shaped steel bars 71. The concrete column structure 40 is the aforementioned concrete column structure. Since the aforementioned concrete column structure has the advantages of improving construction efficiency and ensuring construction accuracy, the basic structure having it also has the aforementioned advantages.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] For purposes of the description hereinafter, spatial terms, such as "above", "below", "upper", "lower", and the like, can be used with reference to the illustrated orientation of one device or feature to another device or feature, as illustrated in the figures. It will be further understood that the spatial terms are intended to encompass different orientations of the device or feature in addition to the orientation depicted in the figures. For example, if the device or feature is inverted or rotated 90 degrees, a spatial term that would have previously described a device or feature above or below another device or feature would now be interpreted as being below or above, respectively. Accordingly, the exemplary spatial terminology used herein is for purposes of describing the examples discussed herein and is not intended to be limiting.

[0047] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually 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 making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0048] 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 modifications and changes. 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 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 plurality of vertical steel bars (12) extending from below the column body (11), the vertical steel bars (12) being located on the inner side of the door-shaped steel bars; a post-cast strip (20) cast between the lower surface of the prefabricated column (10) and the ground beam, the vertical steel bars (12) and the door-shaped steel bars having overlapping portions within the height range of the post-cast strip (20); a stirrup (30) wrapped around the circumferential outer side of the door-shaped steel bars and the vertical steel bars (12) to tighten the door-shaped steel bars and the vertical steel bars (12), the roots of the vertical steel bars (12) being welded with steel blocks, the portions of the door-shaped steel bars exposed to the ground beam, the portions of the vertical steel bars (12) exposed to the prefabricated column (10), the steel blocks, and the stirrup (30) being cast in the post-cast strip (20).

2. The concrete column structure for checking a pit according to claim 1, wherein The stirrups (30) are a plurality of stirrups arranged at intervals along the height direction of the post-cast strip (20).

3. The concrete column structure for checking a pit according to claim 1, characterized by, The distance between adjacent two stirrups (30) is between 50 to 300 mm.

4. The concrete column structure for checking a pit according to claim 1, characterized by, The upper surface of the column body (11) is provided with a fastener sleeve (111), and the lower surface of the column body (11) 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) being greater than or equal to 50 mm.

5. The concrete column structure for checking a pit according to claim 1, wherein The side edges of the column body (11) are provided with rounded corners.

6. The concrete column structure for checking a pit according to claim 1, wherein 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).

7. A track assembly comprising: a plurality of concrete column structures (40), characterized in that the concrete column structures (40) are any one of the concrete column structures according to claims 1 to 6; steel rails (50) fixedly arranged on the prefabricated columns (10) of the plurality of concrete column structures (40).

8. A track assembly comprising: a plurality of concrete column structures (40), characterized in that the concrete column structures (40) are the concrete column structures according to claim 4; steel rails (50); fasteners (80) arranged in the fastener sleeves (111) of the prefabricated columns (10) of the concrete column structures (40) to fix the steel rails (50) on the prefabricated columns (10).

9. The track assembly of claim 8, wherein, The steel rails (50) are two parallel steel rails, the plurality of concrete column structures (40) are divided into two groups with the same number of steel rails (50), each group of concrete column structures (40) supporting one steel rail (50), and the track assembly further comprises: A cushion plate (60) is arranged between the lower surface of the steel rail (50) and the upper surface of the column body (11) of the prefabricated column (10), the fastener (80) fixes the steel rail (50) and the cushion plate (60) on the prefabricated column (10), the upper surface of the cushion plate (60) is an inclined surface (61), the inclined directions of the inclined surfaces (61) of the cushion plates (60) corresponding to the two steel rails (50) are opposite, and the inclined surfaces (61) are inclined downward from outside to inside.

10. A foundation structure comprising: A ground beam (70) having a plurality of door-shaped steel bars (71) arranged upwardly on the ground beam (70); The concrete column structure (40) is characterized in that the concrete column structure (40) is the concrete column structure according to any one of claims 1 to 6.

Images