Steel platform for connecting concrete slab and shield tunnel

Abstract

The utility model discloses a steel platform for connecting a concrete slab and a shield tunnel, which comprises a main body foundation and a tunnel, the tunnel is supported by a plurality of tunnel segments, the end face of the main body foundation is attached to the outermost tunnel segment, one side of the main body foundation is provided with a detachable steel platform main body, and the other side of the main body foundation is provided with a steel plate. The steel platform body extends into a tunnel, a slope surface is arranged on the surface of the steel platform body, one end of the slope surface is flush with a body foundation, and the other end of the slope surface makes contact with the inner bottom wall of a tunnel segment. When the steel platform for connecting the concrete slab and the shield tunnel is used, the fall between the main body foundation and the tunnel can be made up, materials or tools can enter and exit smoothly, the steel platform main body can be mounted and dismounted in a segmented mode, secondary utilization is facilitated, and the use requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunnels, in particular to a steel platform used for connecting a concrete slab with a shield tunnel. Background Art

[0002] Underground utility corridors refer to public tunnels in the city that are used to centrally lay municipal pipelines such as electricity, communications, radio and television, water supply, drainage, heat, gas, etc. At present, the undergrounding of lines and pipelines plays an important role in the current municipal engineering, with stable construction, long-term benefits and great long-term benefits.

[0003] After the shield tunnel is supported by the segments, there will be a height difference of 1-2m between the external main foundation and the tunnel. Due to the height difference, it is difficult to transport external building materials or tooling into the tunnel smoothly, affecting the construction progress.

[0004] In order to facilitate the smooth installation of shield materials or tooling, temporary concrete inclined platforms are now often used to make up for the drop between the main working well and the shield segments. However, reinforced concrete projects are expensive. It takes a long time to break them later and they cannot be recycled and reused. This leads to increased project costs and time benefits, and unsatisfactory use effects. Therefore, there is an urgent need for a steel structure platform that is easy to install and disassemble and can be reused. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned problem and provide a steel platform for connecting concrete slabs and shield tunnels, which can make up for the height difference between the main foundation and the tunnel, facilitate the smooth entry and exit of materials or tooling, and the main body of the steel platform can be installed and disassembled in sections, so as to facilitate secondary utilization.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a steel platform for connecting a concrete slab and a shield tunnel, comprising a main foundation and a tunnel, wherein the tunnel is supported by a plurality of tunnel segments, the end face of the main foundation is in contact with the outermost tunnel segment, a detachable steel platform body is provided on one side of the main foundation, the steel platform body extends into the tunnel, a slope is provided on the surface of the steel platform body, one end of the slope is flush with the main foundation, and the other end is in contact with the inner bottom wall of the tunnel segment.

[0007] Preferably, the steel platform body includes a first-section platform, a middle-section platform and a last-section platform, wherein the first-section platform is detachably connected to the main body foundation, one side of the middle-section platform is detachably connected to the first-section platform, and the other side is fixedly connected to the last-section platform.

[0008] Preferably, the middle section platform includes a plurality of trapezoidal platforms, one side of the trapezoidal platform is provided with a plurality of connecting tubes, the other side is provided with a plug-in slot matching with the connecting tube, a through hole is provided on the side of the trapezoidal platform close to the plug-in slot, the through hole is set along the width direction of the trapezoidal platform, and the plug-in slot is connected with the through hole.

[0009] Preferably, when two adjacent trapezoidal platforms are connected, the connecting tube on one of the trapezoidal platforms is inserted into the plug-in slot on the other trapezoidal platform, and the two adjacent trapezoidal platforms are connected by a pin shaft, and the pin shaft passes through the connecting tube in the through hole and the plug-in slot.

[0010] Preferably, the first-stage platform is fixedly connected to the main body foundation by high-strength bolts, and the outer side of the first-stage platform is provided with a plug-in groove and a through hole corresponding to the connecting tube.

[0011] Preferably, the end of the terminal platform is also provided with an integrated sloped steel plate, and the slope of the sloped steel plate is consistent with the slope of the slope surface.

[0012] Preferably, the slope surface and the slope steel plate are both provided with anti-skid grooves, and the anti-skid grooves are set along the width direction of the steel platform body.

[0013] The utility model discloses a steel platform for connecting a concrete slab with a shield tunnel, comprising a main body foundation and a tunnel, wherein the tunnel is supported by a plurality of tunnel segments, the end face of the main body foundation is fitted with the outermost tunnel segment, a detachable steel platform body is provided on one side of the main body foundation, the steel platform body extends into the tunnel, a slope is provided on the surface of the steel platform body, one end of the slope is flush with the main body foundation, and the other end is in contact with the inner bottom wall of the tunnel segment; compared with the prior art, the steel platform for connecting a concrete slab with a shield tunnel has the advantages of being able to make up for the height difference between the main body foundation and the tunnel when in use, facilitating the smooth entry and exit of materials or tooling, and the steel platform body can be installed and disassembled in sections, facilitating secondary utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure of a steel platform used to connect a concrete slab with a shield tunnel is shown in the utility model. Figure 1 .

[0015] Figure 2 The overall structure of a steel platform used to connect a concrete slab with a shield tunnel is shown in the utility model. Figure 2 .

[0016] Figure 3 It is a schematic diagram of the main foundation and the steel platform body in the utility model.

[0017] Figure 4 The schematic diagram of the middle platform in the utility model is shown in FIG. Figure 1 .

[0018] Figure 5 The schematic diagram of the middle platform in the utility model is shown in FIG. Figure 2 .

[0019] In the figure: 1. main foundation; 2. tunnel; 3. tunnel segment; 4. steel platform body; 41. first section platform; 411. high-strength bolts; 42. middle section platform; 421. trapezoidal platform; 4211. connecting tube; 4212. through hole; 4213. plug-in slot; 4214. pin shaft; 43. last section platform; 44. slope; 45. slope steel plate. DETAILED DESCRIPTION

[0020] The utility model is now described in further detail in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0021] Please refer to Figure 1-3 A steel platform for connecting a concrete slab with a shield tunnel comprises a concrete main foundation 1 and a tunnel 2, wherein the tunnel 2 is supported by a plurality of tunnel segments 3, the end face of the main foundation 1 being in contact with the outermost tunnel segment 3, a detachable steel platform body 4 being provided on one side of the main foundation 1, the steel platform body 4 extending into the tunnel 2, a slope 44 being provided on the surface of the steel platform body 4, one end of the slope 44 being flush with the main foundation 1, and the other end being in contact with the inner bottom wall of the tunnel segment 3.

[0022] Since the surface of the main foundation 1 is higher than the bottom surface of the tunnel 2, there is a height difference between the two. Due to the existence of the height difference, a great impact is exerted on the shield tunnel construction, and the cable bracket cannot be smoothly installed in the well. Therefore, the new type of medium steel platform body 4 can make up for the height difference, so that the building materials or tooling on the main foundation 1 can smoothly enter the tunnel, thereby improving the construction efficiency and meeting the construction supply needs.

[0023] In the solution of the present utility model, the steel platform body 4 includes a first section platform 41, a middle section platform 42 and a last section platform 43. The first section platform 41 is detachably connected to the main foundation 1, one side of the middle section platform 42 is detachably connected to the first section platform 41, and the other side is fixedly connected to the last section platform 43.

[0024] Specifically, the first section platform 41 is fixedly connected to the main foundation 1 by high-strength bolts 411, and can be disassembled after the construction of this section of the tunnel is completed.

[0025] Please refer to Figure 4-5, wherein the middle section platform 42 includes a plurality of trapezoidal platforms 421, a plurality of connecting tubes 4211 are provided on one side of the trapezoidal platform 421, and a plug-in slot 4213 matching with the connecting tube 4211 is provided on the other side, a through hole 4212 is provided on one side of the trapezoidal platform 421 close to the plug-in slot 4213, and the through hole 4212 is set along the width direction of the trapezoidal platform 421, and the plug-in slot 4213 is connected with the through hole 4212.

[0026] When two adjacent trapezoidal platforms 421 are connected, the connecting tube 4211 on one of the trapezoidal platforms 421 is inserted into the plug-in slot on the other trapezoidal platform 421 , and the two adjacent trapezoidal platforms 421 are connected via a pin 4214 , which passes through the connecting tube 4211 in the through hole 4212 and the plug-in slot 4213 .

[0027] That is to say, the multiple trapezoidal platforms 421 are connected by the pin shaft 4214. When connected, the connecting tube 4211 is arranged in the plug-in groove 4213 of another trapezoidal platform, thereby satisfying the detachable connection between the multiple trapezoidal platforms and can be reused many times.

[0028] The outer side of the first-stage platform 41 is provided with a plug-in groove and a through hole corresponding to the connecting tube 4211; therefore, the first-stage platform 41 is also detachably connected to the middle-stage platform via a pin shaft.

[0029] In the embodiment itself, the first stage platform 41 is detachable from the main foundation 1; the multiple trapezoidal platforms 421 are detachable; the first trapezoidal platform 421 and the first stage platform 41 are also detachable, and the last trapezoidal platform 421 is welded to the last stage platform; when installing or disassembling, it can be done in sections to improve efficiency; and the installed steel platform body can make up for the drop to meet the smooth entry and exit of building materials or tooling.

[0030] As a preferred solution, the end of the terminal platform 43 is also provided with an integrated slope steel plate 45, the slope steel plate 45 and the slope surface 44 have the same slope, and the two form a flat slope for easy entry and exit. The main body of the steel platform is in contact with the inner bottom wall of the tunnel segment 3 through the slope steel plate 45, and the establishment of the slope steel plate 45 can further reduce the drop between the terminal platform 43 and the tunnel segment 3, making the slope more gentle.

[0031] As a preferred solution, the slope surface and the slope steel plate 45 are both provided with anti-skid grooves, and the anti-skid grooves are set along the width direction of the steel platform body 4.

[0032] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A steel platform for connecting a concrete slab with a shield tunnel, comprising a main foundation and a tunnel, wherein the tunnel is supported by a plurality of tunnel segments, and the end surface of the main foundation is in contact with the outermost tunnel segment, characterized in that: A detachable steel platform body is provided on one side of the main foundation. The steel platform body extends into the tunnel. A slope is provided on the surface of the steel platform body. One end of the slope is flush with the main foundation, and the other end is in contact with the inner bottom wall of the tunnel segment.

2. The steel platform for connecting a concrete slab to a shield tunnel according to claim 1, characterized in that: The steel platform body includes a first section platform, a middle section platform and a last section platform. The first section platform is detachably connected to the main body foundation, one side of the middle section platform is detachably connected to the first section platform, and the other side is fixedly connected to the last section platform.

3. The steel platform for connecting a concrete slab to a shield tunnel according to claim 2, characterized in that: The middle section platform includes a plurality of trapezoidal platforms, one side of the trapezoidal platform is provided with a plurality of connecting tubes, the other side is provided with plug-in slots matching with the connecting tubes, a through hole is provided on the side of the trapezoidal platform close to the plug-in slot, the through hole is set along the width direction of the trapezoidal platform, and the plug-in slot is connected with the through hole.

4. The steel platform for connecting a concrete slab with a shield tunnel according to claim 3, characterized in that: When two adjacent trapezoidal platforms are connected, the connecting tube on one of the trapezoidal platforms is inserted into the plug-in slot on the other trapezoidal platform. The two adjacent trapezoidal platforms are connected by a pin shaft, and the pin shaft passes through the connecting tube in the through hole and the plug-in slot.

5. The steel platform for connecting a concrete slab with a shield tunnel according to claim 4, characterized in that: The first-stage platform is fixedly connected to the main body foundation by high-strength bolts, and a plug-in groove and a through hole corresponding to the connecting tube are arranged on the outer side of the first-stage platform.

6. The steel platform for connecting a concrete slab to a shield tunnel according to claim 2, characterized in that: The end of the terminal platform is also provided with an integrated sloped steel plate, and the slope of the sloped steel plate is consistent with the slope of the slope surface.

7. The steel platform for connecting a concrete slab with a shield tunnel according to claim 6, characterized in that: The slope surface and the slope steel plate are both provided with anti-skid grooves, and the anti-skid grooves are set along the width direction of the steel platform body.

Images