Door-type force transfer system back-leaning structure of built underground structure external starting well

Abstract

The utility model relates to a door-type force transmission system back-leaning structure of an external starting well of a built underground structure, the door-type force transmission system back-leaning structure of the external starting well of the built underground structure is located underground, the back-leaning structure comprises a steel plate, the steel plate is erected on a bottom plate of the starting well, the steel plate is provided with a first surface and a second surface, and the first surface and the second surface are opposite to each other. The first surface faces the pipe jacking starting well, and the second surface faces the built underground structure; the side face of the transverse horizontal support is tightly attached to the second face. And the jacking pipe rear leaning wall is perpendicular to the steel plate and supports the transverse horizontal support. The back leaning structure can form a stable structure system, recoil force is evenly transmitted to an adjacent built underground structure or a soil body, and it is guaranteed that the adjacent built underground structure is stable when the pipe jacking machine jacks out a pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipe jacking origin support field, especially a door type force transmission system backrest structure of external origin well of built underground structure. BACKGROUND

[0002] Pipe jacking method is a common cut-and-cover construction method for setting through street connecting channel crossing municipal road in city, can reduce the influence to surrounding building, is widely used in construction in city center area. When the pipe jacking machine jacks up the pipe in origin well, a backrest force is generated, and the backrest force is usually transmitted through the backrest steel backing plate of origin well and the outer wall of rear reinforced concrete, and then is borne by the surrounding reinforced soil. Since the through street connecting channel crossing municipal road in city center area is usually connected with subway, basement of shopping mall or other public underground building, and is connected among built underground structures for the convenience of public, the backrest force usually cannot be borne by sufficient soil.

[0003] Therefore, it is necessary to provide a door type force transmission system backrest structure of external origin well of built underground structure, which can form a stable structure system, uniformly transmit the backrest force to the adjacent built underground structure or soil, and ensure the stability of the adjacent built underground structure when the pipe jacking machine jacks up the pipe. SUMMARY

[0004] The utility model discloses a door type force transmission system backrest structure of external origin well of built underground structure, which can form a stable structure system, uniformly transmit the backrest force to the adjacent built underground structure or soil, and ensure the stability of the adjacent built underground structure when the pipe jacking machine jacks up the pipe.

[0005] In order to solve the problems in the prior art, the utility model provides a door type force transmission system backrest structure of external origin well of built underground structure, which is located underground. The backrest structure comprises:

[0006] A steel plate is erected on the bottom plate of the origin well. The steel plate has first and second opposite faces. The first face faces the pipe jacking origin well, and the second face faces the built underground structure.

[0007] A horizontal lateral support is tightly attached to the second face.

[0008] A pipe jacking backrest wall perpendicular to the steel plate supports the horizontal lateral support.

[0009] Optionally, in the door type force transmission system backrest structure of external origin well of built underground structure, the pipe jacking backrest wall is supported by the built underground structure.

[0010] Optionally, in the portal force transmission system of the built underground structure outside the starting well, the back structure of the portal force transmission system of the built underground structure outside the starting well, the bottom plate between the second surface of the steel plate and the side wall of the built underground structure is called the right side bottom plate.

[0011] Optionally, in the portal force transmission system of the built underground structure outside the starting well, the back structure of the portal force transmission system of the built underground structure outside the starting well, the pipe jacking back wall stands on the right side bottom plate.

[0012] Optionally, in the portal force transmission system of the built underground structure outside the starting well, the back structure of the portal force transmission system of the built underground structure outside the starting well, there is a distance between the bottom surface of the transverse horizontal support and the right side bottom plate.

[0013] Optionally, in the portal force transmission system of the built underground structure outside the starting well, the back structure of the portal force transmission system of the built underground structure outside the starting well, the distance between the bottom surface of the transverse horizontal support and the right side bottom plate is 4.5-4.7 meters.

[0014] Optionally, in the portal force transmission system of the built underground structure outside the starting well, the back structure of the portal force transmission system of the built underground structure outside the starting well, the cross section of the transverse horizontal support is a square with a side length of 950-1050 millimeters.

[0015] Optionally, in the portal force transmission system of the built underground structure outside the starting well, the back structure of the portal force transmission system of the built underground structure outside the starting well, the thickness of the pipe jacking back wall is 590-610 millimeters.

[0016] In the portal force transmission system of the built underground structure outside the starting well, the back structure of the portal force transmission system of the built underground structure outside the starting well, the beneficial effects are as follows:

[0017] Meet the calculation requirements of bearing the recoil force, and can save the amount of reinforced concrete, economic and reliable;

[0018] Can be constructed without affecting the normal use of the surrounding underground structure, and has little impact on the surrounding environment;

[0019] After the construction is completed, only the transverse horizontal support and the pipe jacking back wall need to be removed, the amount of removal is small, economic and environmentally friendly, and the back structure can form a stable structure system, evenly transmit the recoil force to the adjacent built underground structure or soil, and ensure that the adjacent built underground structure is stable when the pipe jacking machine is jacked out. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The core back plane schematic diagram provided by the embodiment of the utility model;

[0021] Figure 2 The core back plane schematic diagram provided by the embodiment of the utility model.

[0022] Among them, 1-transverse horizontal support; 2-pipe jacking back wall; 3-steel plate. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings. The advantages and features of the present application will be more apparent from the following description. It should be noted that the drawings are very simplified and all use non-precise proportions, only to facilitate, clearly assist in describing the purpose of the embodiments of the present application.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] The pipe jacking method is a common excavation construction method for setting a street crossing channel crossing a municipal road in a city, which can reduce the impact on the surrounding buildings and is widely used in construction in the central area of the city. When the pipe jacking machine jacks up the pipe at the starting well, a rear seat force is generated. This rear seat force is usually transmitted through the rear steel backing plate of the starting well and the rear reinforced concrete wall, and then borne by the surrounding reinforced soil. Since the street crossing channel in the central area of the city is usually connected with the subway, the basement of the shopping mall or other public underground buildings, and is mostly connected between the existing underground structures for the convenience of the public, at this time, the rear seat force usually has not enough soil to bear.

[0026] In order to solve the problems existing in the prior art, the utility model provides a door type force transmission system rear leaning structure of an external starting well of an existing underground structure, which is located underground. As shown in Figure 1 and 2 The rear leaning structure comprises:

[0027] A steel plate 3 is erected on the bottom plate of the starting well, and the steel plate 3 has opposite first and second faces. The first face faces the pipe jacking starting well, and the second face faces the existing underground structure.

[0028] A transverse horizontal support 1 is tightly attached to the second face. In an embodiment, the cross section of the transverse horizontal support 1 is square with a side length of 950-1050 mm. Of course, the cross section of the transverse horizontal support 1 can also be rectangular, polygonal, etc.

[0029] A pipe jacking rear wall 2 perpendicular to the steel plate 3 supports the transverse horizontal support 1. In an embodiment, the thickness of the pipe jacking rear wall 2 is 590-610 mm.

[0030] Typically, the starting shaft for pipe jacking is located outside the basement of a shopping mall. The space between the starting shaft and the basement exterior wall is an adjacent existing underground structure. The horizontal support 1 and the wall behind the pipe jacking 2 are located in this space. After the horizontal support 1 and the wall behind the pipe jacking 2 are removed later, a pedestrian passage can be formed.

[0031] Preferably, the wall 2 behind the jacking pipe is supported by the existing underground structure to ensure that the recoil force during jacking is effectively transmitted to the adjacent existing underground structure. In one embodiment, the horizontal reinforced concrete support 1 and the two walls behind the jacking pipe 2 form a portal truss load-bearing system. The two ends of the horizontal support 1 are connected to the walls on both sides of the jacking shaft, also forming a portal truss, which transmits the recoil force to the adjacent existing underground structure through the horizontal support 1 and the wall 2 behind the jacking pipe. This satisfies the calculation requirements for bearing the recoil force, saves the volume of reinforced concrete, and does not affect the normal use of the surrounding underground structure, making it economical and reasonable. Preferably, the bottom plate of the jacking shaft between the second side of the steel plate 3 and the side wall of the existing underground structure is called the right bottom plate, and the wall 2 behind the jacking pipe is placed on the right bottom plate. In one embodiment, the bottom plate where the jacking shaft is located is at the same horizontal height as the right bottom plate. Of course, if it is convenient for force transmission, the bottom plate where the jacking shaft is located can also be lower than the right bottom plate.

[0032] Typically, there is a distance between the bottom surface of the horizontal support 1 and the right side base plate. In one embodiment, the distance between the bottom surface of the horizontal support 1 and the right side base plate is 4.5-4.7 meters.

[0033] In summary, the beneficial effects of the portal force transmission system backing structure for the externally mounted starting shaft in an existing underground structure provided by this utility model are as follows:

[0034] It meets the calculation requirements for bearing recoil force and can save on the volume of reinforced concrete, making it economical and reliable.

[0035] Construction can be carried out without affecting the normal use of the surrounding underground structures, and the impact on the surrounding environment is minimal.

[0036] After construction is completed, only the horizontal supports and the wall behind the pipe jacking need to be removed. The amount of demolition is small, which is economical and environmentally friendly. This back support structure can form a stable structural system and evenly transmit the recoil force to the adjacent existing underground structure or soil, ensuring the stability of the adjacent existing underground structure when the pipe jacking machine jacks out the pipe.

[0037] The above are only preferred embodiments of the present application, and do not have any limiting effect on the present application. Any person skilled in the art, without departing from the technical scheme of the present application, makes any form of equivalent replacement or modification of the technical scheme and technical content disclosed by the present application, and the variation belongs to the content of the technical scheme of the present application, and still belongs to the protection scope of the present application.

Claims

1. A portal force transmission system backing structure for an externally mounted launching shaft in an existing underground structure, characterized in that, The portal frame force transmission system of the existing underground external launching shaft has a backing structure located underground, and the backing structure includes: A steel plate, which stands on the bottom plate of the launching shaft, has a first side and a second side facing opposite directions, the first side facing the launching shaft and the second side facing the existing underground structure. A horizontal support is provided, with its side surface closely abutting the second surface; The jacking pipe, perpendicular to the steel plate, rests against the wall, and the jacking pipe rests against the wall to support the horizontal support.

2. The portal force transmission system backing structure of the externally mounted launching shaft in an existing underground structure as described in claim 1, characterized in that, The jacking pipe is supported by the existing underground structure behind it.

3. The portal force transmission system backing structure of the externally mounted launching shaft in an existing underground structure as described in claim 1, characterized in that, The bottom plate of the launching well between the second side of the steel plate and the side wall of the existing underground structure is called the right bottom plate.

4. The portal force transmission system backing structure for the externally mounted launching shaft of the existing underground structure as described in claim 3, characterized in that, The jacking pipe is placed against the wall on the right side of the base plate.

5. The portal force transmission system backing structure for the externally mounted launching shaft of the existing underground structure as described in claim 3, characterized in that, There is a distance between the bottom surface of the horizontal support and the right-side base plate.

6. The portal force transmission system backing structure for the externally mounted launching shaft of the existing underground structure as described in claim 3, characterized in that, The distance between the bottom surface of the horizontal support and the right-side base plate is 4.5-4.7 meters.

7. The portal force transmission system backing structure of the externally mounted launching shaft in an existing underground structure as described in claim 1, characterized in that, The cross-section of the horizontal support is square, with a side length of 950-1050 mm.

8. The portal force transmission system backing structure for the externally mounted launch shaft of the existing underground structure as described in claim 1, characterized in that, The thickness of the jacking pipe against the wall is 590-610 mm.

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