CN210288458U

CN210288458U - Prefabricated railway contact net pillar foundation structure

Info

Publication number: CN210288458U
Application number: CN201920619468.7U
Authority: CN
Inventors: 刘津; 梅振斌; 张曼华; 罗健; 邓洪; 古晓东
Original assignee: China Railway Design Corp
Current assignee: China Railway Design Corp
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-04-10
Anticipated expiration: 2029-04-30

Abstract

The utility model belongs to the technical field of railway contact net construction, especially, relate to a prefabricated formula railway contact net pillar foundation structure, including a concrete hollow pile, many rag bolts and the prestressed steel bar that distribute along concrete hollow pile axial are buried underground to the inner wall of concrete hollow pile, rag bolt includes a bolt, a round steel of taking the elbow is welded to the lower extreme of bolt, the upper end of bolt stretches out outside concrete hollow pile, a spiral stirrup has still been buried underground in the wall of concrete hollow pile, spiral stirrup embraces tightly and twines outside the prestressed steel bar, two ground terminal have still been buried underground in the concrete hollow pile, an end plate is installed respectively at the upper and lower both ends of concrete hollow pile, the prestressed steel bar stretches out in concrete hollow pile and the upper and lower both ends of prestressed steel bar are respectively rigid coupling in two upper and lower end plates; the utility model discloses can solve among the prior art work efficiency low, easy polluted environment, the not wayward problem of site operation quality.

Description

Prefabricated railway contact net pillar foundation structure

Technical Field

The utility model belongs to the technical field of the construction of railway contact net, especially, relate to a prefabricated formula railway contact net pillar foundation structure.

Background

At present, the domestic high-speed contact network foundation is generally a cast-in-place concrete pile foundation, the cast-in-place foundation is low in construction efficiency, long in construction period, easy to pollute the environment, difficult to control the field construction quality, large in influence on the environment around the line, labor-consuming and limited in application range.

Disclosure of Invention

In view of this, the utility model aims at providing a prefabricated formula railway contact net pillar foundation structure to solve the difficult problem of control of worker's inefficiency, easy polluted environment, site operation quality among the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a prefabricated railway contact net column foundation structure comprises a concrete hollow pile, wherein a plurality of foundation bolts and prestressed steel bars which are distributed along the axial direction of the concrete hollow pile are embedded in the wall of the concrete hollow pile, the foundation bolts are embedded in the concrete hollow pile and comprise a bolt, a round steel with an elbow is welded at the lower end of the bolt, the upper end of the bolt extends out of the concrete hollow pile, a spiral stirrup which extends along the axial direction of the concrete hollow pile is also embedded in the pipe wall of the concrete hollow pile, the spiral stirrup is tightly wound outside the prestressed steel bars, two grounding terminals are also embedded in the concrete hollow pile, one end of one grounding terminal is connected to one bolt, one end of the other grounding terminal is connected to one prestressed steel bar, and the terminal ends of the two grounding terminals extend out of the concrete hollow pile;

the upper end and the lower end of the concrete hollow pile are respectively provided with an end plate, the prestressed steel bar is tensioned in the concrete hollow pile, and the upper end and the lower end of the prestressed steel bar are respectively fixedly connected in the upper end plate and the lower end plate.

Furthermore, the pile sleeve hoop structure further comprises two sections of pile sleeve hoops, the pile sleeve hoops are of a cylindrical structure, the two sections of pile sleeve hoops are respectively sleeved at the upper end and the lower end of the concrete hollow pile, and the pile sleeve hoops and the end plates are welded together.

Furthermore, a plurality of anchoring holes are formed in the end plate, anchoring ends are arranged at two ends of the prestressed steel bar, and the anchoring ends are fixedly connected in the anchoring holes.

Furthermore, the anchor hole includes a hole and No. two holes, and a hole is the counter sink, and No. two holes are the screw hole, and a hole and No. two holes are adjacent to each other and communicate each other, and the anchor end chucking is in this counter sink, simultaneously, screws in No. two downthehole anchor bolts.

Further, the grounding terminal and the bolt are connected through a section of connecting steel bar.

Compared with the prior art, the utility model discloses following advantage has:

prefabricated formula railway contact net pillar foundation structure, adopt the precast concrete pile basis of mill, the prefabricated component of mill compares with cast-in-place formula basis, the precision is high, pollution-free, the goods quality is easily controlled, although there is certain noise, but is suitable for the non-intensive regional circuit of railway. The problems that a cast-in-place foundation is low in construction efficiency, long in construction period, easy to pollute the environment, difficult to control the field construction quality, large in influence on the environment around a line, labor-consuming and limited in application range are solved.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic external structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention at section a of fig. 1;

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a top view of FIG. 1;

FIG. 6 is an enlarged view of portion C of FIG. 5;

FIG. 7 is a schematic structural view of an end plate;

FIG. 8 is an enlarged view of portion D of FIG. 7;

fig. 9 is a cross-sectional view of hole number one of fig. 8 at section E.

Description of reference numerals:

11-concrete hollow pile; 12-anchor bolts; 121-bolt; 122-round steel; 13-prestressed steel bars; 131-an anchoring tip; 14-helical stirrups; 15-a ground terminal; 16-connecting reinforcing steel bars; 2-pile hoop; 3-an end plate; 31-an anchor hole; 311-hole number one; 312-hole number two; 4-anchoring the bolt.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 9, the prefabricated railway contact network strut foundation structure includes a concrete hollow pile 11, and in the construction process, because the strut is usually a circular strut or an H-shaped strut, in order to match and install the strut with the foundation, the shape of the concrete hollow pile 11 may be a circular hollow pile or a rectangular hollow pile, so that, during construction, the shape of the concrete hollow pile 11 may be selected according to the construction requirements. The attached drawing provided by the embodiment is a structural schematic diagram of a round concrete hollow pile 11.

A plurality of foundation bolts 12 and prestressed steel bars 13 which are distributed along the axial direction of the concrete hollow pile 11 are embedded in the wall of the concrete hollow pile 11, the foundation bolts 12 are embedded in the concrete hollow pile 11, each foundation bolt 12 comprises a bolt 121, a round steel 122 with an elbow is welded at the lower end of each bolt 121, the upper end of each bolt 121 extends out of the concrete hollow pile 11, a spiral stirrup 14 which extends along the axial direction of the concrete hollow pile 11 is also embedded in the pipe wall of the concrete hollow pile 11, the spiral stirrup 14 is tightly wound outside the prestressed steel bars 13, two grounding terminals 15 are also embedded in the concrete hollow pile 11, one end of one of the ground terminals 15 is connected to one of the bolts 121, the ground terminal 15 and the bolt 121 are connected through one section of connecting steel bar 16, one end of the other ground terminal 15 is connected to one of the prestressed steel bars 13, and the terminal ends of the two ground terminals 15 extend out of the concrete hollow pile 11.

The upper end and the lower end of the concrete hollow pile 11 are respectively provided with an end plate 3, the prestressed steel bar 13 is tensioned in the concrete hollow pile 11, and the upper end and the lower end of the prestressed steel bar 13 are respectively fixedly connected in the upper end plate 3 and the lower end plate 3. The pile sleeve hoop structure further comprises two sections of pile hoop hoops 2, the pile hoop hoops 2 are of a cylindrical structure, the two sections of pile hoop hoops 2 are respectively sleeved at the upper end and the lower end of the concrete hollow pile 11, and the pile hoop hoops 2 and the end plates 3 are welded together. Because the foundation structure adopts a factory prefabricated type, the arrangement of the pile hoop 2 plays a role in preventing the slurry leakage at two ends in the process of manufacturing the concrete hollow pile 11.

Furthermore, a plurality of anchoring holes 31 are formed in the end plate 3, anchoring heads 131 are arranged at two ends of the prestressed steel bar 13, and the anchoring heads 131 are fixedly connected in the anchoring holes 31. Specifically, the anchoring hole 31 includes a first hole 311 and a second hole 312, the first hole 311 is a countersunk hole, the second hole 312 is a threaded hole, the first hole 311 and the second hole 312 are adjacent to each other and are communicated with each other, the anchoring head 131 is clamped in the countersunk hole, and meanwhile, the anchoring bolt 4 is screwed in the second hole 312.

Preferably, the performance of the prestressed steel bar 13 should comply with the regulations of GB/T5223.3.

The concrete of the foundation structure is provided with the prestressed steel bars 13, and before the foundation structure bears external load, the prestressed steel bars 13 apply pre-compressive stress to the concrete in a tensile area of the foundation structure in advance to offset tensile stress generated under the action of the external load in a use stage, so that the occurrence of concrete cracks is delayed, the development of the cracks is limited, and the crack resistance and the rigidity of the structure are improved.

The construction method for installing the support column by adopting the foundation structure comprises the following steps of firstly pre-drilling a hole on the ground, wherein the hole diameter is proper; then, pile sinking equipment is utilized to vertically align the prefabricated foundation structure with the pile position and slowly insert the prefabricated foundation structure into the hole formed in the previous step; and adjusting, then erecting a support, inserting the upper end of the foundation bolt 12 into a support flange, connecting the support and the foundation together by adopting a bolt, and finally connecting the foundation structure into the comprehensive grounding system through a prefabricated grounding terminal 15.

It can be seen, prefabricated formula railway contact net pillar foundation structure, adopt the precast concrete pile basis of mill, convenient construction, easy operation has removed a great deal of problem that site operation brought from, the prefabricated component of mill compares with cast-in-place formula basis, the precision is high, pollution-free, the goods quality is easy to control, it is low to have solved cast-in-place formula basis efficiency of construction, the period is long, easy polluted environment, site operation quality is difficult to control, it is great to the peripheral environmental impact of circuit, consume the manpower to application range limited problem.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Prefabricated formula railway contact net pillar foundation structure, its characterized in that: the concrete hollow pile comprises a concrete hollow pile (11), a plurality of foundation bolts (12) and prestressed steel bars (13) which are distributed along the axial direction of the concrete hollow pile (11) are embedded in the inner wall of the concrete hollow pile (11), the foundation bolts (12) comprise a bolt (121), a round steel (122) with an elbow is welded at the lower end of the bolt (121), the upper end of the bolt (121) extends out of the concrete hollow pile (11), a spiral stirrup (14) which extends along the axial direction of the concrete hollow pile (11) is also embedded in the pipe wall of the concrete hollow pile (11), the spiral stirrup (14) is tightly wound outside the prestressed steel bars (13), two grounding terminals (15) are also embedded in the concrete hollow pile (11), one end of one grounding terminal (15) is connected to one of the bolts (121), one end of the other grounding terminal (15) is connected to one of the prestressed steel bars (13), and the terminal heads of the two grounding terminals (15) extend out of the concrete hollow pile (11);

the upper end and the lower end of the concrete hollow pile (11) are respectively provided with an end plate (3), the prestressed steel bar (13) is tensioned in the concrete hollow pile (11), and the upper end and the lower end of the prestressed steel bar (13) are respectively fixedly connected in the upper end plate (3) and the lower end plate (3).

2. The prefabricated railway contact net support column foundation structure of claim 1, wherein: the concrete hollow pile is characterized by further comprising two sections of pile hoops (2), wherein the two sections of pile hoops (2) are respectively sleeved at the upper end and the lower end of the concrete hollow pile (11), and the pile hoops (2) and the end plates (3) are welded together.

3. The prefabricated railway contact net support column foundation structure of claim 2, wherein: a plurality of anchoring holes (31) are formed in the end plate (3), anchoring heads (131) are arranged at two ends of the prestressed steel bar (13), and the anchoring heads (131) are fixedly connected in the anchoring holes (31).

4. The prefabricated railway contact net support column foundation structure of claim 3, wherein: the anchoring hole (31) comprises a first hole (311) and a second hole (312), the first hole (311) is a countersunk hole, the second hole (312) is a threaded hole, the first hole (311) and the second hole (312) are adjacent to each other and are communicated with each other, the anchoring head (131) is clamped in the countersunk hole, and meanwhile, the anchoring bolt (4) is screwed in the second hole (312).

5. The prefabricated railway contact net support column foundation structure of claim 1, wherein: the grounding terminal (15) and the bolt (121) are connected through a section of connecting steel bar (16).