Fabricated steel structure underground passage
By using a corrugated steel plate box-type design and waterproofing measures for prefabricated steel structures, the problems of long construction cycles and water seepage in traditional underground passages have been solved, achieving a high-rigidity and high-strength underground passage design that is easy to construct and not prone to leakage.
Patent Information
- Application Number
- CN202423126692.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Traditional underground passages have long construction cycles, significant traffic disruptions, severe water seepage at joints, large gaps at connection points, insufficient rigidity and strength, and are prone to fatigue damage.
The structure is a prefabricated steel structure, consisting of a box-shaped structure made of corrugated steel plates, a bottom plate, a top plate, and side plates. It is connected by bolts and reinforced with waterproofing measures. The outside is wrapped with concrete to improve rigidity and strength.
It shortens the construction period, reduces traffic impact, prevents leakage, has high structural rigidity and strength, long service life, and is green and environmentally friendly.
Smart Images
Figure CN223510380U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge and tunnel engineering technology, and in particular to a prefabricated steel structure underground passage, which is applicable to underground passage structures including pedestrian passages, vehicular tunnels, and power corridors. Background Technology
[0002] Traditional underground passages are generally constructed using the open-cut and cast-in-place method, which has a long construction period. Especially for renovation projects in busy central urban areas, the construction of underground passages has a significant impact on surrounding traffic, and the construction quality is difficult to guarantee.
[0003] In recent years, with the development of prefabricated construction technology, technicians have continuously proposed the construction concept of prefabricated underground passages. The mainstream solution is precast reinforced concrete assembly, which divides the cast-in-place underground passage into three parts: top slab, bottom slab, and side walls. The bottom slab and side walls, as well as the top slab and side walls, are connected by PC steel bars or steel strands. Although this prefabricated structure shortens the construction period and reduces the impact on traffic, the large size and weight of the precast concrete blocks, serious appearance defects, and difficulty in controlling installation accuracy result in large gaps at the connection nodes of the precast blocks. Although rubber waterstops are installed to fill these gaps, the relaxation of the prestress in the PC steel bars or steel strands later leads to serious water seepage at the nodes. In addition, the nodes have low stiffness and weak strength, making them prone to fatigue damage under long-term vehicle dynamic loads.
[0004] Based on this, this application provides a prefabricated steel structure underground passage that has a fast construction progress, is not prone to leakage, and has high overall structural rigidity and strength. Utility Model Content
[0005] This utility model aims to solve the technical problems existing in the prior art. To this end, this utility model provides a prefabricated steel structure underground passage with fast construction progress, less leakage, and higher overall structural rigidity and strength.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] A prefabricated steel structure underground passage is provided, including a foundation pit, a passage body located within the foundation pit, and foundation pit filler. The passage body is a box-shaped structure composed of a bottom plate, a top plate, and side plates made of corrugated steel plates. The bottom plate, top plate, and side plates are all designed as arc-shaped plates arching outwards from the passage. Corrugated flange plates are welded to both ends of the side plates, respectively fitting against the bottom plate and the top plate. The corrugated flange plates are bolted to the bottom plate and the top plate, and waterproof measures are taken at the connection points. Backfill material is provided in the arc-shaped concave surface of the bottom plate of the passage body, and a road surface structure layer is laid on the backfill material.
[0008] In some alternative embodiments, the bottom of the pit is excavated with a zigzag trench capable of holding a base plate, and grouting material is backfilled between the base plate and the zigzag trench.
[0009] In some alternative embodiments, the bottom plate, top plate, and side plate are all made of multiple corrugated steel plates spliced together by bolts. Each corrugated steel plate has a connecting plate welded to both sides. The connecting plates of adjacent corrugated plates are connected by multiple bolts, and waterproof measures are taken at the connection points.
[0010] In some alternative embodiments, the waterproof structure includes a rubber gasket between the two connectors, a waterproof coating applied to the bolt and stud holes and the joints, and a waterproof polyester fabric laid at the joints.
[0011] In some alternative embodiments, the rubber pad is an EPDM rubber pad, and the waterproof coating is a non-curing rubber asphalt.
[0012] In some optional embodiments, the clearance of the main channel body is 6mH3.5m, the width of the corrugated steel plate is 2-3m, the thickness is 3-8mm, the height of the crest and trough is 150mm, and the spacing between the crest and trough is 400mm.
[0013] In some alternative embodiments, the corrugated steel sheet is a double-sided hot-dip galvanized corrugated steel sheet.
[0014] In some optional embodiments, a plurality of inner crest stiffening plates and outer trough stiffening plates are provided between the corrugated flange plate and the side plate.
[0015] In some alternative embodiments, the foundation pit filler is made of C30 concrete, and the backfill is made of C20 lightweight concrete.
[0016] In some alternative embodiments, the inner surfaces of the top plate and side plates are further provided with aluminum decorative panels.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. This utility model adopts a prefabricated steel structure construction channel, which is lightweight and convenient for transportation and construction. Compared with traditional concrete structures, it greatly shortens the construction cycle, minimizes the impact on traffic, and the steel structure construction is more green and environmentally friendly, with less pollution to the surrounding environment.
[0019] 2. The main body of the passage is made of corrugated steel. The crests and troughs of the corrugated steel increase the cross-sectional stiffness. The bottom plate, side plate and top plate are arched to reduce the bending moment generated by external loads. This makes the steel structure structure the most reasonable, saves the most steel, and reduces the overall cost.
[0020] 3. The outer side of the main channel is wrapped with concrete, which makes the overall structure more rigid and stronger, and less prone to fatigue failure under long-term vehicle dynamic loads.
[0021] 4. The main body of the channel is hot-dip galvanized for corrosion protection, the connection between each node is reliable, and multiple sealing and waterproofing are adopted, with corrosion protection and durability far exceeding 50 years. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0023] Figure 1 This is a cross-sectional layout diagram of the prefabricated steel structure underground passage provided by this utility model;
[0024] Figure 2 yes Figure 1 Provided connection details diagram between the base plate and the side wall;
[0025] Figure 3 yes Figure 1 A 3D view of the connection between the base plate and the side wall (bolts not shown);
[0026] Figure 4 This is a schematic diagram showing the connection between the corrugated flange plate and the base plate or top plate provided by this utility model;
[0027] Figure 5 This is a schematic diagram of the connection between two adjacent corrugated steel plates provided by this utility model;
[0028] Figure 6 This is a top view of the connection between the corrugated flange plate and the side plate provided by this utility model.
[0029] The attached diagram lists the components represented by each number as follows:
[0030] 1—Foundation pit, 1.1—Folded trench, 2—Main body of the channel, 2.1—Bottom plate, 2.2—Top plate, 2.3—Side plate, 2.4—Corrugated flange plate, 2.5—Inner crest stiffening plate, 2.6—Outer trough stiffening plate, 2.7—Connecting plate, 3—Foundation pit filler, 4—Backfill material, 5—Road structure layer, 6—Grouting material, 7—Rubber pad, 8—Aluminum decorative panel. Detailed Implementation
[0031] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0034] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0035] Example: This example provides a prefabricated steel structure underground passage, as shown in the attached figure. Figure 1 As shown, it includes a foundation pit 1, a channel body 2 located in the foundation pit, and foundation pit filler 3. The channel body adopts a prefabricated steel structure. The foundation pit filler is used to fill the foundation pit. In this embodiment, the foundation pit filler 3 is preferably made of C30 concrete, so that the outer side of the channel body of the steel structure is wrapped with concrete, which makes the overall structure more rigid and stronger, and less prone to fatigue failure under the long-term action of vehicle dynamic load.
[0036] Preferred options are listed below. Figure 1 To be continued Figure 4As shown, the main body 2 of the channel is a box-shaped structure composed of a bottom plate 2.1, a top plate 2.2, and side plates 2.3 made of corrugated steel plates. The crests and troughs of the corrugated steel increase the cross-sectional stiffness of the bottom plate, top plate, and side plates. The bottom plate 2.1, top plate 2.2, and side plates 2.3 are all designed as arc-shaped plates that arch outward from the channel, which reduces the bending moment generated by external loads. Corrugated flange plates 2.4 are welded to both ends of the side plates 2.3, respectively, and are respectively attached to the bottom plate 2.1 and the top plate 2.2. The corrugated flange plates 2.4 are bolted to the bottom plate 2.1 and the top plate 2.2, and a waterproof structure is provided at the connection. Backfill material 4 is provided in the arc-shaped concave surface of the bottom plate 2.1 of the main body 2 of the channel. In this embodiment, the backfill material 4 is preferably C20 lightweight concrete, and a road structure layer 5 is laid on the backfill material 4.
[0037] In a preferred embodiment, as shown in the appendix Figure 1 As shown in the figure, in this embodiment, the bottom of the foundation pit 1 is excavated with a zigzag-shaped foundation trench 1.1 capable of placing the base plate 2.1, and grouting material 6 is backfilled between the base plate 2.1 and the zigzag-shaped foundation trench 1.1. This design allows the base plate to fit tightly with the zigzag-shaped foundation trench, resulting in more uniform stress on the foundation of the channel body and better waterproofing performance; in addition, the foundation formed by the grouting of the zigzag-shaped foundation trench is more stable than the arc-shaped foundation, which can prevent the main body from shaking during assembly construction.
[0038] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 6 As shown, in this embodiment, several inner crest stiffening plates 2.5 and outer trough stiffening plates 2.6 are provided between the corrugated flange plate 2.4 and the side plate 2.3, which can increase the connection strength between the side plate and the corrugated flange plate and the side plate.
[0039] For details, see attached. Figure 5 As shown, in this embodiment, the bottom plate 2.1, top plate 2.2 and side plate 2.3 are all made of multiple corrugated steel plates spliced together by bolts. In this embodiment, the corrugated steel plates are preferably double-sided hot-dip galvanized corrugated steel plates. Each corrugated steel plate has a connecting plate 2.7 welded on both sides. The connecting plates 2.7 of adjacent corrugated plates are connected by multiple bolts, and a waterproof structure is provided at the connection.
[0040] In a preferred embodiment, the waterproof structure includes a rubber gasket 7 disposed between the two connectors, a waterproof coating (not shown in the figure) applied to the bolt and stud holes and joints, and a waterproof polyester fabric (not shown in the figure) laid at the connection. Preferably, the rubber gasket is an EPDM rubber gasket, and the waterproof coating is a non-curing rubber asphalt. In specific implementation, the connection structure between the corrugated flange plate at the end of the side plate and the top plate or bottom plate is as shown in the attached figure. Figure 4 As shown; and the connection structure between two adjacent corrugated steel plates is shown in the attached figure. Figure 5As shown, after the bolts of the two connectors are tightened, non-curing rubber asphalt waterproof coating is applied to the bolts and bolt hole base joints, and then waterproof polyester cloth is applied.
[0041] Furthermore, in this embodiment, aluminum decorative panels 8 are also provided on the inner surfaces of the top plate 2.2 and the side plate 2.3 for decorative purposes.
[0042] In specific construction, the clearance of the main body 2 of the channel constructed in this embodiment is 6mH3.5m. The corrugated steel plate can be 2-3m wide, 6mm thick, with a peak and trough height of 150mm and a peak-trough spacing of 400mm.
[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A prefabricated steel structure underground passage, comprising a foundation pit, a passage body disposed within the foundation pit, and foundation pit filling material; characterized in that: The main body of the channel is a box-shaped structure composed of a bottom plate, a top plate, and side plates made of corrugated steel plates. The bottom plate, top plate, and side plates are all designed as arc-shaped plates that arch outward from the channel. Corrugated flange plates are welded to both ends of the side plates and respectively fit into the bottom plate and the top plate. The corrugated flange plates are connected to the bottom plate and the top plate by bolts, and a waterproof structure is provided at the connection. The main body of the channel is located in the arc-shaped concave surface of the bottom plate, where backfill material is provided, and a road structure layer is laid on the backfill material.
2. The prefabricated steel structure underground passage according to claim 1, characterized in that: The bottom of the foundation pit is excavated with a zigzag-shaped trench that can hold the bottom plate, and grouting material is backfilled between the bottom plate and the zigzag-shaped trench.
3. The prefabricated steel structure underground passage according to claim 1, characterized in that: The bottom plate, top plate, and side plates are all made of multiple corrugated steel plates spliced together by bolts. Each corrugated steel plate has a connecting plate welded to both sides. The connecting plates of adjacent corrugated plates are connected by multiple bolts, and a waterproof structure is provided at the connection.
4. The prefabricated steel structure underground passage according to claim 3, characterized in that: The waterproof structure includes a rubber gasket between the two connectors, a waterproof coating applied to the bolt and stud holes and the joints, and a waterproof polyester fabric laid at the joints.
5. The prefabricated steel structure underground passage according to claim 4, characterized in that: The rubber pad is made of EPDM rubber, and the waterproof coating is non-curing rubber asphalt.
6. The prefabricated steel structure underground passage according to claim 3, characterized in that: The clearance of the main channel body is 6mH3.5m, the width of the corrugated steel plate is 2-3m, the thickness is 3-8mm, the height of the crest and trough is 150mm, and the spacing between the crest and trough is 400mm.
7. The prefabricated steel structure underground passage according to claim 3, characterized in that: The corrugated steel sheet is made of double-sided hot-dip galvanized corrugated steel sheet.
8. The prefabricated steel structure underground passage according to claim 1, characterized in that: The corrugated flange plate and the side plate are provided with several inner crest stiffening plates and outer trough stiffening plates.
9. The prefabricated steel structure underground passage according to claim 1, characterized in that: The foundation pit fill material is C30 concrete, and the backfill material is C20 lightweight concrete.
10. The prefabricated steel structure underground passage according to any one of claims 1 to 9, characterized in that: The inner surfaces of the top plate and side plates are also provided with aluminum decorative panels.