Roadway post installation foundation pile

Abstract

This utility model relates to a road post-installation facility foundation pile, effectively solving the problems of poor accuracy, easy damage, and inability to replace pre-embedded parts of the foundation pile. The technical solution includes a cast-in-place section and a precast section. The cast-in-place section is block-shaped, with an installation groove reserved at the top. The precast section is installed in the installation groove. The precast section has the same shape and size as the installation groove, is precast as a block structure with a non-circular cross-section, and a vertical first bolt is pre-embedded at the bottom of the installation groove. A vertical through hole is opened on the precast section, and the first bolt passes through the through hole. A nut is screwed onto the upper end of the first bolt to vertically limit the precast section. A connector is pre-embedded at the top of the precast section. This utility model has higher accuracy in the position of the connector of the independent precast section. Moreover, since the precast section is installed later, it can avoid the connector being damaged by road construction before the installation of the post-installation facility. In addition, if the connector or the precast section is damaged, the precast section can be replaced separately.

Description

Technical Field

[0001] This utility model relates to the field of road construction, specifically a road post-installation facility foundation pile. Background Technology

[0002] Roadside retrofit facilities include streetlight poles, road sign posts, traffic light posts, height restriction poles, etc. Their installation method is generally to pour a concrete foundation below the road surface and pre-embed connecting bolts and other connectors in the concrete. The retrofit facilities are then installed on the foundation through the connectors. For example, utility model patent application number: CN201721763897.9 discloses a streetlight base, the base body of which is made of concrete and has a steel cage embedded in it. The steel cage extends out of the base body and has an external thread section. The bottom end of the light pole is provided with a flange, and the light pole is connected to the steel cage through the flange.

[0003] This method has the following problems: First, the base is cast on-site, and the positional accuracy of the pre-embedded connectors is limited, which can easily lead to incompatibility with the subsequent facilities and make installation impossible. Second, after the foundation is formed, the pre-embedded parts are exposed and easily damaged by construction equipment, bricks, and stones during the construction process, resulting in skewing, bending, and breakage. Third, when the subsequent facilities are damaged by external forces such as strong winds or traffic accidents, the pre-embedded parts and the surrounding concrete are easily damaged as well, making it impossible to install the subsequent facilities again. Summary of the Invention

[0004] This utility model provides a road post-installation facility foundation pile, which aims to solve the problems of poor accuracy, easy damage, and inability to replace the pre-embedded parts of the foundation pile.

[0005] The technical solution includes a cast-in-place section and a precast section. The cast-in-place section is block-shaped, with an installation groove reserved at the top. The precast section is installed in the installation groove. The precast section has the same shape and size as the installation groove, is precast as a block structure with a non-circular cross-section, and has a vertical first bolt embedded at the bottom of the installation groove. A vertical through hole is opened on the precast section, and the first bolt passes through the through hole. A nut is screwed onto the upper end of the first bolt to vertically limit the precast section. A connector is embedded at the top of the precast section.

[0006] Both the mounting groove and the prefabricated part are provided with draft angles.

[0007] The upper end of the through hole is provided with a countersunk hole, the upper end of the first bolt is lower than the upper end of the countersunk hole, and the nut is located inside the countersunk hole.

[0008] The lower end of the nut is provided with a washer.

[0009] The diameter of the through hole is larger than the diameter of the first bolt.

[0010] This utility model connects to downstream facilities such as street light poles and road sign posts via an independent prefabricated component. Since the prefabricated component is prefabricated in a prefabrication plant, the position of the connector has higher precision compared to on-site casting, avoiding incompatibility issues caused by pre-embedding errors of the connector. Moreover, since the prefabricated component is installed together with the downstream facilities, it can prevent the connector from being damaged by road construction before the downstream facilities are installed. In addition, if the downstream facilities are damaged by external forces, the connector or the prefabricated component will also be damaged, and the prefabricated component can be replaced separately. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present invention.

[0012] Figure 2 This is a top view of the present invention.

[0013] Figure 3 This is an exploded view of the present invention.

[0014] Figure 4 This is a cross-sectional view of the present invention. Detailed Implementation

[0015] Referring to the accompanying drawings, this utility model includes a cast-in-place section 1 and a precast section 2. The cast-in-place section 1 is a block shape, formed by excavating a casting pit at the designed location of the road, pouring concrete into the casting pit, and allowing it to solidify. Its function is to provide a stable foundation for subsequent installations. An installation groove 3 is reserved at the top of the cast-in-place section 1, and the precast section 2 is installed in the installation groove 3. The precast section 2 has the same shape and size as the installation groove 3, is precast as a block structure, and has a non-circular cross section, usually rectangular or polygonal, to prevent it from rotating around a vertical axis in the installation groove 3. A vertical first bolt 4 is pre-embedded at the bottom of the installation groove 3, and a vertical through hole 5 is opened on the precast section 2. The first bolt 4 passes through the through hole 5, and a nut 6 is screwed onto the upper end of the first bolt 4 to vertically limit the precast section 2. A connector 7 is pre-embedded at the top of the precast section 2. The connector 7 is usually a flange-shaped bolt, used for connecting and installing with subsequent facilities such as street light poles and road sign posts.

[0016] Both the mounting groove 3 and the prefabricated part 2 are provided with draft angles to facilitate installation and removal.

[0017] The upper end of the through hole 5 is provided with a countersunk hole 8. The upper end of the first bolt 4 is lower than the upper end of the countersunk hole 8, and the nut 6 is located inside the countersunk hole 8, which can prevent the first bolt 4 and the nut 6 from affecting the installation of the subsequent facilities.

[0018] The lower end of the nut 6 is provided with a washer 9 to distribute the pressure of the nut 6.

[0019] The diameter of the through hole 5 is larger than the diameter of the first bolt 4, so that even if there is a slight error in the pre-embedded position of the first bolt 4, it can be smoothly inserted into the through hole 5.

[0020] During construction, the prefabricated part 2 is poured during road construction. Specifically, a pouring pit is excavated at the designed location of the road, and concrete is poured into the pit and solidified. The prefabricated part 2 is prefabricated in a prefabrication yard. The specific type and location of the connector 7 are determined according to the subsequent installation facilities and are adapted to the connection of the subsequent installation facilities.

[0021] When the main road construction is completed and the installation facilities are installed, the precast part 2 is inserted into the installation groove 3 of the cast-in-place part 1, the first bolt 4 is inserted into the through hole 5 of the precast part 2, then the washer 9 and nut 6 are installed, and the nut 6 is tightened to vertically limit the precast part 2. The horizontal and circumferential limits of the precast part 2 are achieved by the inner wall of the installation groove 3.

[0022] After the prefabricated part 2 is installed, the post-installation facilities can be connected to the prefabricated part 2 by means of connectors 7, such as flange bolts.

[0023] When the post-installation facilities are damaged, they can be replaced. If the connector 7 or the prefabricated part 2 is damaged, the prefabricated part 2 can be replaced at the same time.

[0024] This utility model has higher precision in the position of the connector 7 through the independent prefabricated part 2, and since the prefabricated part 2 is installed later, it can avoid the connector 7 being damaged by road construction before the installation of the later-installed facilities. In addition, if the connector 7 or the prefabricated part 2 is damaged, the prefabricated part 2 can be replaced separately.

Claims

1. A type of road retrofit foundation pile, characterized in that, It includes a cast-in-place section (1) and a precast section (2). The cast-in-place section (1) is a block shape. An installation groove (3) is reserved at the top of the cast-in-place section (1). The precast section (2) is installed in the installation groove (3). The precast section (2) has the same shape and size as the installation groove (3). It is precast as a block structure with a non-circular cross section. A vertical first bolt (4) is pre-embedded at the bottom of the installation groove (3). A vertical through hole (5) is opened on the precast section (2). The first bolt (4) passes through the through hole (5). A nut (6) is screwed on the upper end of the first bolt (4) to vertically limit the precast section (2). A connector (7) is pre-embedded at the top of the precast section (2).

2. The road retrofit foundation pile according to claim 1, characterized in that, Both the mounting groove (3) and the prefabricated part (2) are provided with draft angles.

3. The road retrofit foundation pile according to claim 1, characterized in that, The upper end of the through hole (5) is provided with a countersunk hole (8), the upper end of the first bolt (4) is lower than the upper end of the countersunk hole (8), and the nut (6) is located inside the countersunk hole (8).

4. A road post-installation facility foundation pile according to claim 1, characterized in that, The lower end of the nut (6) is provided with a washer (9).

5. A road post-installation facility foundation pile according to claim 1, characterized in that, The diameter of the through hole (5) is larger than the diameter of the first bolt (4).

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