A street light infrastructure

Abstract

The utility model relates to a street lamp foundation structure, this street lamp foundation includes foundation pit, is provided with foundation main muscle in foundation pit, the bottom of foundation pit is paved with bearing layer, and is provided with the reserved passageway on bearing layer, and the reserved passageway periphery is provided with the reinforcing bar connected with foundation main muscle to fix the position required by reserved passageway, still includes embedded component, the upper section of embedded component extends to street lamp foundation top and is fixed in street lamp installation position, and the lower section of embedded component extends to the periphery or is above reserved passageway.The utility model has the advantages of: through arranging the rainwater pipe in the street lamp foundation, the structure is more compact, the street lamp foundation bottom is paved with the bearing layer, and the reserved passageway is set up above the bearing layer, the bearing layer can support the reserved passageway and the rainwater pipe, avoid the reserved passageway subsidence caused by pavement settlement, and then make the rainwater pipe interface disengagement dislocation even pipeline overall breakage, and the periphery of reserved passageway is provided with the reinforcing bar connected with foundation main muscle, improves the structural strength.

Description

Technical Field

[0001] This utility model relates to the field of underground foundations, specifically to a street light foundation structure for underground pipeline installation. Background Technology

[0002] Currently, people's requirements for urban infrastructure are gradually increasing, and lighting systems are an important part of urban infrastructure. In special scenarios such as channelized sections of highway intersections and sections of roads passing through towns, streetlights need to be installed on the roadside due to the lack of side medians. Moreover, due to land use restrictions and the influence of dense surrounding buildings, the usable space on the roadside is extremely small. Since the traditional streetlight foundations and underground pipelines (such as rainwater pipes and sewage pipes) are arranged independently and in parallel, each occupying its own lateral space, spatial conflicts are likely to occur, which may lead to the inability to implement the project and the need for additional land acquisition or pipeline relocation, significantly increasing the project cost.

[0003] To address the aforementioned issues, the existing Chinese utility model patent ZL202420794286.4 (publication number CN222332754U), entitled "A Streetlight Infrastructure with Underground Pipelines," discloses a streetlight infrastructure where the streetlight foundation is a square reinforced concrete block, with underground pipelines running underneath. This arrangement avoids positional conflicts between the streetlight foundation and underground pipelines, resulting in a more compact structure. However, in actual production and daily life, factors such as improper foundation treatment and heavy vehicle traffic can lead to road surface subsidence. This can cause the underground pipeline interfaces to detach or become misaligned, or even the entire pipeline to rupture, thus affecting its use.

[0004] Therefore, further improvements are needed to the foundation structure of streetlights for underground pipeline installation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a street light foundation structure that avoids spatial conflicts between the street light foundation and underground pipelines, and also avoids misalignment of underground pipeline interfaces due to road surface settlement, in light of the above-mentioned existing technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: This street light foundation structure is used for installing street lights. Its features include: a foundation pit corresponding to the excavation of the street light to be installed; a main foundation reinforcement bar is provided in the foundation pit; a bearing layer is laid at the bottom of the foundation pit; a reserved channel for the rainwater pipe to be installed is provided on the bearing layer; reinforcing bars connected to the main foundation reinforcement bar are provided around the reserved channel to fix the required position of the reserved channel; and a pre-embedded component is also included. The upper section of the pre-embedded component extends to the top of the street light foundation and is fixed at the street light installation position, while the lower section of the pre-embedded component extends to the outer periphery or top of the reserved channel.

[0007] To enhance support, preferably, the load-bearing layer comprises at least two vertically distributed precast panel layers and a crushed stone cushion layer. The precast panel layer includes a reinforced concrete panel layer and a concrete layer cast within the reinforced concrete panel layer. The load-bearing layer consists of an upper precast panel layer and a lower crushed stone cushion layer. The precast panel layer, constructed from the reinforced concrete panel layer, has high overall structural strength. When the streetlight is subjected to wind loads or heavy vehicle loads, the precast panel layer forms a solid support surface beneath the streetlight foundation, preventing road surface settlement due to localized soil softness. The crushed stone cushion layer contains a large amount of crushed stone particles, which, compared to the precast panel layer, has lower strength, facilitating load transfer.

[0008] To improve stability, preferably, at least one end of the reinforced concrete panel layer is provided with a first hook portion that connects to the main reinforcement of the foundation. When the streetlight is subjected to lateral wind loads, the precast panel layer will deform accordingly. At this time, the first hook portion at the end of the reinforced concrete panel layer can enhance the anchorage with the main reinforcement of the streetlight foundation, thereby increasing tensile strength to resist deformation.

[0009] To avoid mutual interference, preferably, a vibration damping component is installed between the outer wall of the rainwater pipe and the inner wall of the reserved channel. When the streetlight is subjected to wind or heavy vehicles passing over the road, the load is transferred to the reserved channel through the streetlight foundation. By installing the vibration damping component between the reserved channel and the rainwater pipe, a flexible buffer layer is formed to effectively absorb vibration and prevent damage to the rainwater pipe.

[0010] To facilitate the fixing of streetlights, preferably, the pre-embedded component includes a flange mounted on top of the streetlight foundation and anchor bolts arranged circumferentially on the flange and extending downward into the streetlight foundation. Connectors are arranged laterally between adjacent anchor bolts, and fasteners are provided between the top of each anchor bolt and the flange. The anchor bolts of the pre-embedded component are fixed within the streetlight foundation, and the fasteners firmly install the streetlight onto the flange, improving the stability and robustness of the streetlight and preventing it from tipping over. Simultaneously, the steel-reinforced connectors between adjacent anchor bolts allow all anchor bolts to be welded into a single frame, greatly improving its rigidity and stability, ensuring that the position and verticality of the anchor bolts remain unchanged, thereby better fixing the streetlight.

[0011] To enhance safety, preferably, each anchor bolt is positioned around the perimeter of the reserved channel. When the reserved channel and anchor bolts do not interfere with each other during installation, the anchor bolts can extend downwards to the perimeter of the reserved channel, thereby increasing the anchoring depth to resist the overturning moment generated by wind loads. Simultaneously, a safe distance is maintained between the anchor bolts and the perimeter of the reserved channel, facilitating subsequent maintenance and construction, and ensuring sufficient concrete at the bottom of the anchor bolts for anchoring, thus guaranteeing anchoring force.

[0012] Of course, the positional relationship between the anchor bolts and the reserved channel can also be as follows: each anchor bolt is placed above the reserved channel. When interference occurs between the reserved channel and the anchor bolts during the arrangement process, in order to facilitate the arrangement, the anchor bolts need to be placed above the reserved channel. At the same time, a safe distance is reserved between the anchor bolts and the outer perimeter of the reserved channel, which not only facilitates subsequent maintenance and construction, but also ensures that there is enough concrete at the bottom of the anchor bolts for anchoring, thus ensuring the anchoring force.

[0013] To improve pull-out resistance, preferably, each anchor bolt includes a first vertical section and a second vertical section arranged at intervals. An inclined section, sloping outwards from top to bottom, is provided between the first and second vertical sections. The bottom end of the second vertical section has a second hook section that anchors to the concrete block within the streetlight foundation. The anchor bolts are arranged in four sections. The first vertical section is fixed to the flange by fasteners and directly bears the enormous tensile force from the streetlight. The inclined section prevents the anchor bolts from being pulled out vertically. The second vertical section further transmits the force from the inclined section to a deeper part of the concrete block, engaging more areas of concrete to participate in the stress, thus improving the stiffness and stability of the anchorage. The second hook section firmly hooks into the concrete block, enhancing the overall pull-out resistance of the structure and preventing the anchor bolts from being pulled out entirely by wind loads.

[0014] Of course, the structure of the anchor bolts can also be configured such that each anchor bolt includes a vertically arranged third vertical portion and a first horizontal portion, with a connecting portion between the third vertical portion and the first horizontal portion, and a third hook portion at the outer end of the first horizontal portion that is anchored to the concrete block within the streetlight foundation. The anchor bolts are arranged in four sections. The third vertical portion is fixed to the flange by fasteners, directly bearing the enormous tensile force from the streetlight. The first horizontal portion is horizontally arranged, and the third hook portion is firmly hooked to the concrete block. Both sections can simultaneously improve the overall pull-out resistance of the structure, preventing the anchor bolts from being pulled out by the streetlight under wind loads.

[0015] To improve structural strength, preferably, the reinforcing ribs include a first reinforcing rib arranged circumferentially around the outer periphery of the reserved channel and a second reinforcing rib arranged longitudinally around the outer periphery of the reserved channel. Both the first and second reinforcing ribs are welded and fixed to the main reinforcement of the foundation. The first reinforcing ribs are arranged circumferentially around the outer periphery of the reserved channel to resist tensile stress and prevent radial cracks; the second reinforcing ribs are used to resist vertical shear stress and bending stress, improving overall stiffness. Both are welded and fixed to the main reinforcement of the foundation, effectively preventing concrete cracks around the reserved channel due to stress concentration, thereby improving strength.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] 1. By reserving a passage, not only can the street light foundation have a corresponding reserved space for the rainwater pipe, thus avoiding positional conflicts between the two, but the arrangement of the two can also be made more compact in terms of structure.

[0018] 2. The bearing layer paved at the bottom of the foundation pit can support the reserved passage while simultaneously supporting the rainwater pipes inside the reserved passage, thereby avoiding the phenomenon of rainwater pipe joints becoming detached or misaligned or even the entire pipe breaking due to road settlement.

[0019] 3. Finally, the outer perimeter of the reserved passage is equipped with reinforcing bars that connect to the main reinforcement bars of the foundation, thereby improving the structural strength of the overall street light foundation. Attached Figure Description

[0020] Figure 1 This is a front view of the street light foundation structure in Embodiment 1 of this utility model;

[0021] Figure 2 This is a top view of the street light foundation structure in Embodiment 1 of this utility model;

[0022] Figure 3 This is an elevation view of the reserved passage, rainwater pipe, and reinforcing rib in Embodiment 1 of this utility model;

[0023] Figure 4 This is a cross-sectional view of the reserved channel, rainwater pipe, and reinforcing rib in Embodiment 1 of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection between the rainwater pipe and the street light foundation in Embodiment 1 of this utility model (in the bottom position);

[0025] Figure 6 This is a schematic diagram of the connection between the rainwater pipe and the street light foundation in Embodiment 1 of this utility model (without being submerged).

[0026] Figure 7 This is a side view of the street light foundation structure in Embodiment 2 of this utility model.

[0027] In the diagram: 1. Streetlight foundation; 11. Foundation pit; 2. Bearing layer; 21. Precast panel layer; 211. Reinforced panel layer; 212. Concrete layer; 213. First hook section; 22. Crushed stone cushion layer; 3. Rainwater pipe; 4. Reserved passage; 5. Reinforcing rib; 51. First reinforcing rib; 52. Second reinforcing rib; 6. Embedded component; 61. Flange; 62. Anchor bolt; 621. First vertical section; 622. Second vertical section; 623. Inclined section; 624. Second hook section; 625. Third vertical section; 626. First horizontal section; 627. Connecting section; 628. Third hook section; 63. Fastener; 7. Connector. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] like Figures 1 to 6 As shown, the street light foundation structure in this embodiment is used to install street lights. It includes a foundation pit 11 corresponding to the excavation of the street light to be installed. The foundation pit 11 is provided with main reinforcement bars, which include horizontal and longitudinal reinforcement bars arranged vertically. The bottom of the foundation pit 11 is also paved with a bearing layer 2. The bearing layer 2 is provided with a reserved channel 4 for the rainwater pipe 3 to be installed to pass through. The axis of the reserved channel 4 is parallel to the axis of the street light foundation 1 or forms a certain preset angle. The underground pipelines laid in the reserved channel 4 are not limited to rainwater pipes 3, but can also be sewage pipes, etc. The outer periphery of the reserved channel 4 is provided with reinforcing bars 5 connected to the main reinforcement bars to fix the reserved channel 4 in the required position. It also includes a pre-embedded component 6. The upper section of the pre-embedded component 6 extends to the top of the street light foundation 1 and is fixed to the street light installation position, while its lower section extends to the outer periphery or top of the reserved channel 4, thereby anchoring it to the concrete block in the street light foundation 1.

[0031] Because streetlights are relatively tall, they are susceptible to lateral wind loads in daily life. Furthermore, prolonged exposure to large vehicles can cause road surface subsidence. Therefore, reference should be made to... Figure 1In this embodiment, a supporting layer 2 is provided below the street light foundation 1. This supporting layer 2 includes a precast panel layer 21 and a crushed stone cushion layer 22 distributed vertically. The precast panel layer 21 is made of C25 reinforced concrete, providing high overall structural strength. When the street light is subjected to wind loads or loads generated by heavy vehicles, the precast panel layer 21 can form a solid supporting surface below the street light foundation 1, thereby preventing road surface settlement due to localized soil softness. The crushed stone cushion layer 22 contains a large amount of crushed stone particles, which can be mortar-grouted rubble or graded crushed stone, etc. In this embodiment, mortar-grouted rubble is preferred due to its stronger load-bearing capacity. Mortar-grouted rubble has lower strength than the precast panel layer 21, which is more conducive to load transfer. Furthermore, refer to... Figure 5 and Figure 6 One end of the reinforced concrete panel layer 211 is provided with a first hook portion 213 that is anchored to the main reinforcement of the street lamp foundation 1, thereby improving tensile strength to resist deformation. It should be noted that: (Refer to...) Figure 6 When the rainwater pipe 3 is roughly level with the bottom of the street light foundation 1 (without sinking to the bottom), the bottoms of both can be reinforced to prevent uneven settlement; refer to Figure 5 When there is a certain height difference between the rainwater pipe 3 and the bottom of the street light foundation 1 (bottoming state), it is necessary to strengthen the base of the support to improve the support strength.

[0032] When the streetlight is subjected to wind force or heavy vehicle traffic, the load is transferred to the reserved channel 4 through the streetlight foundation 1. Since the rainwater pipe 3 is located inside the reserved channel 4, the load can damage the rainwater pipe 3. In this embodiment, the inner diameter of the reserved channel 4 is 1.2m, while the outer diameter of the rainwater pipe 3 is 1m, thus creating a gap between them. In this embodiment, a vibration damping component is installed between the outer wall of the rainwater pipe 3 and the inner wall of the reserved channel 4. This vibration damping component can be made of flexible sealing materials such as rubber rings or polyurethane foam. In this embodiment, a rubber ring with a longer service life is used for filling. In addition, to improve the strength of the reserved channel 4, refer to... Figure 3 and Figure 4 The reserved channel 4 is surrounded by first reinforcing ribs 51 arranged in a circumferential interval and second reinforcing ribs 52 arranged in a longitudinal direction. The circumferential distance between each first reinforcing rib 51 is 20mm, which can resist tensile stress and prevent radial cracks. The spacing between each second reinforcing rib 52 is 300mm, which can be used to resist vertical shear stress and bending stress and improve overall rigidity. Both are welded and fixed to the main reinforcement of the foundation, which effectively prevents concrete cracks from occurring around the reserved channel 4 due to stress concentration, thereby improving strength.

[0033] To facilitate the fixing of streetlights, this embodiment includes a pre-embedded component 6, as shown in the reference. Figure 1 and Figure 2 The pre-embedded component 6 includes a flange 61 mounted on top of the streetlight foundation 1 and eight anchor bolts 62 arranged circumferentially on the flange 61 and extending downwards into the streetlight foundation 1. Fasteners 63 firmly install the streetlight onto the flange 61, improving its stability and robustness and preventing it from tipping over. Simultaneously, steel connecting pieces 7 are provided between adjacent anchor bolts 62, allowing all anchor bolts 62 to be welded into a single frame, greatly improving its rigidity and stability, ensuring the position and verticality of the anchor bolts 62 remain unchanged, thus better securing the streetlight. (Reference) Figure 1 When the reserved channel 4 and the anchor bolts 62 do not interfere with each other during the arrangement process, the eight anchor bolts 62 extend downwards to the outer perimeter of the reserved channel 4. At this point, the anchoring depth is relatively large, which can resist the overturning moment generated by wind load. At the same time, the anchor bolts 62 maintain a 10cm distance from the reserved channel 4, which facilitates subsequent maintenance and construction, and also ensures that there is enough concrete at the bottom of the anchor bolts 62 for anchoring, thus ensuring the anchoring force. In this embodiment, the anchor bolts 62 are arranged in four segments, which has a stronger pull-out resistance than the conventional vertically distributed anchor bolts 62. The specific structure is as follows: Each anchor bolt 62 includes a first vertical part 621, an inclined part 623, a second vertical part 622, and a second hook part 624 connected sequentially from top to bottom. The first vertical part 621 is fixed to the flange 61 by fasteners 63 and directly bears the huge tensile force from the street lamp. Since the inclined part 623 is inclined, the anchor bolt 62 is not easily pulled out vertically. The second vertical part 622 further transmits the force transmitted by the inclined part 623 to a deeper part of the concrete block, mobilizing more areas of concrete to participate in the force, thus improving the rigidity and stability of the anchor. The second hook part 624 is firmly hooked to the concrete block, improving the overall pull-out resistance of the structure and preventing the anchor bolt 62 from being pulled out by the street lamp when subjected to wind load.

[0034] The construction process in this embodiment is as follows:

[0035] S1. Excavate the foundation pit 11 and compact the foundation, and lay a 100mm-150mm thick crushed stone cushion layer 22 at the bottom and compact it;

[0036] S2. Install the steel sleeve used to make the reserved channel 4, and tie the main reinforcement bars of the foundation and the reinforcing bars 5 set on the outer perimeter of the reserved channel 4;

[0037] S3. Install the pre-embedded component 6 inside the street light foundation 1, ensuring accurate positioning;

[0038] S4. Pour C30 concrete into the street light foundation 1 and vibrate it to compact it. Cure for no less than 7 days.

[0039] S5. Remove the steel sleeve and install the rainwater pipe 3 in the pre-made reserved channel 4. At the same time, fill the gap between the reserved channel 4 and the rainwater pipe 3 with vibration damping components.

[0040] S6. Use C25 reinforced concrete to make precast panel layer 21. After curing, install and fix the street light on flange 61.

[0041] Example 2

[0042] refer to Figure 7 The street light foundation structure in this embodiment is basically the same as that in embodiment 1. The only difference is the setting position of the pre-embedded component 6 and the internal structure. Specifically, when the reserved channel 4 and the anchor bolt 62 interfere with each other during the arrangement process, the anchor bolt 62 needs to be set above the reserved channel 4 for easy arrangement. At this time, the specific structure of the anchor bolt 62 includes a third vertical part 625, a connecting part 627, a first horizontal part 626 and a third hook part 628 connected from top to bottom. The third vertical part 625 is fixed to the flange 61 by fastener 63 and directly bears the huge tensile force from the street light. The first horizontal part 626 is arranged horizontally and the third hook part 628 is firmly hooked to the concrete block. Both can simultaneously improve the overall pull-out resistance of the structure and prevent the anchor bolt 62 from being pulled out by the street light when subjected to wind load.

Claims

1. A street light foundation structure for installing street lights, characterized in that: The street light foundation (1) includes a foundation pit (11) corresponding to the street light to be installed. The foundation pit (11) is provided with a main reinforcement bar. The bottom of the foundation pit (11) is also covered with a bearing layer (2). A reserved channel (4) for the rainwater pipe (3) to be installed is provided on the bearing layer (2). The outer periphery of the reserved channel (4) is provided with a reinforcing bar (5) connected to the main reinforcement bar to fix the reserved channel (4) at the required position. It also includes a pre-embedded component (6). The upper section of the pre-embedded component (6) extends to the top of the street light foundation (1) and is fixed at the street light installation position, while the lower section of the pre-embedded component (6) extends to the outer periphery or above the reserved channel (4).

2. The street light foundation structure according to claim 1, characterized in that: The bearing layer (2) includes at least a precast panel layer (21) and a crushed stone cushion layer (22) distributed vertically. The precast panel layer (21) includes a steel panel layer (211) and a concrete layer (212) poured into the steel panel layer (211).

3. The street light foundation structure according to claim 2, characterized in that: At least one end of the steel reinforcement panel layer (211) is provided with a first hook portion (213) that is connected to the main reinforcement of the foundation.

4. The street light foundation structure according to claim 1, characterized in that: A vibration damping component is provided between the outer wall of the rainwater pipe (3) and the inner wall of the reserved channel (4) for vibration reduction.

5. The street light foundation structure according to claim 1, characterized in that: The pre-embedded component (6) includes a flange (61) set on the top of the street lamp foundation (1) and anchor bolts (62) arranged circumferentially on the flange (61) and extending downward into the street lamp foundation (1). Connectors (7) are arranged laterally between adjacent anchor bolts (62), and fasteners (63) are provided between the top of each anchor bolt (62) and the flange (61).

6. The street light foundation structure according to claim 5, characterized in that: Each of the anchor bolts (62) is arranged around the periphery of the reserved channel (4).

7. The street light foundation structure according to claim 5, characterized in that: Each of the anchor bolts (62) is positioned above the reserved channel (4).

8. The street light foundation structure according to claim 6, characterized in that: Each of the anchor bolts (62) includes a first vertical portion (621) and a second vertical portion (622) arranged at intervals. An inclined portion (623) is provided between the first vertical portion (621) and the second vertical portion (622) and slopes outward from top to bottom. A second hook portion (624) is provided at the bottom end of the second vertical portion (622) and anchors to the concrete block in the street lamp foundation (1).

9. The street light foundation structure according to claim 7, characterized in that: Each of the anchor bolts (62) includes a vertically arranged third vertical part (625) and a first horizontal part (626), and a connecting part (627) is provided between the third vertical part (625) and the first horizontal part (626). The outer end of the first horizontal part (626) is provided with a third hook part (628) for anchoring to the concrete block in the street lamp foundation (1).

10. The street light foundation structure according to any one of claims 1 to 9, characterized in that: The reinforcing rib (5) includes a first reinforcing rib (51) arranged circumferentially around the reserved channel (4) and a second reinforcing rib (52) arranged longitudinally around the reserved channel (4). The first reinforcing rib (51) and the second reinforcing rib (52) are both welded and fixed to the main reinforcement of the foundation.

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