CN220955622U - Assembled guide table suitable for ultra-large diameter shield launching and receiving - Google Patents
Assembled guide table suitable for ultra-large diameter shield launching and receiving Download PDFInfo
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- CN220955622U CN220955622U CN202322702459.3U CN202322702459U CN220955622U CN 220955622 U CN220955622 U CN 220955622U CN 202322702459 U CN202322702459 U CN 202322702459U CN 220955622 U CN220955622 U CN 220955622U
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- shield
- guide table
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 153
- 239000010959 steel Substances 0.000 claims abstract description 153
- 239000004567 concrete Substances 0.000 claims abstract description 79
- 238000003466 welding Methods 0.000 claims description 25
- 230000000977 initiatory effect Effects 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 29
- 230000005641 tunneling Effects 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses an assembled guide table suitable for originating and receiving an oversized-diameter shield, which comprises a pre-buried bottom plate steel plate (1), a concrete prefabricated member (2), a profile steel bracket (3) and a counter-force frame (5). The pre-buried bottom plate steel plate (1) is pre-buried in the ground of originating or receiving well leveling, and concrete prefab (2) are through two pre-set concrete prefab welded steel plates (21) in lower part and upper portion, fixed connection pre-buried bottom plate steel plate (1) and shaped steel bracket (3) respectively, and concrete prefab (2) adopt the adjustment of adjustment self height mode to adjust and lead the platform height, cooperate shaped steel bracket (3) location shield machine tunneling operation direction, and reaction frame (5) are in shaped steel bracket (3) one side provides initial power for shield machine tunneling operation. The utility model solves the problems of complex guide table construction, tight construction period, high hoisting risk, low construction efficiency and incapability of being secondarily used for starting and receiving other diameter shields in the traditional ultra-large diameter shield construction.
Description
Technical Field
The embodiment of the utility model belongs to the technical field of tunnel engineering equipment, and particularly relates to an assembled guide table suitable for ultra-large diameter shield launching and receiving.
Background
In the traditional construction of the existing oversized-diameter shield, the originating base used for carrying the large-diameter shield is designed and constructed in a targeted mode according to the characteristics of the shield such as the excavation diameter, the weight and the blocking, and is of a disposable structure, so that the originating base cannot be reused in a vertical shaft comprising a water collecting well, a pump house and an evacuation channel of a secondary structure. In the prior art, when a shield machine starts, a steel structure starting bracket or a cast-in-situ reinforced concrete base is required to be erected between a starting well and an end wall, the shield machine is erected on the starting bracket, and then a reaction frame is installed at the rear part of the shield machine to start the shield machine; when the shield excavation is completed, the originating carrier is removed. Because the large-diameter shield machine body is large in size and weight, the common steel bracket cannot meet the stability requirement, and the excavating posture of the shield machine can be directly influenced, so that the shield starting is influenced. If the steel bracket is required to meet the requirement of large diameter starting, the strength requirement for the steel bracket is very high, the cost is high, and the installation is troublesome.
In the prior art, the construction of the initial base of the shield machine comprises the steps of adopting a C50 reinforced concrete cast-in-situ guide table, and needing to be integrally applied with the rooting of the main body bottom plate; when the follow-up main body structure is constructed, the concrete structure is required to be broken and cleaned, the construction process of the guide table base is complex, the requirement on the construction process is high, the pre-buried section bar is more, a large amount of mechanical equipment manpower is required for follow-up breaking, the construction period is long, and the economic consumption is large; by adopting the fully prefabricated steel bracket, the whole structure of the fully prefabricated steel bracket needs to meet the bearing requirement due to the characteristics of the ultra-large diameter shield such as volume, weight and blocking, the section weight reaches more than 200 tons, the fully prefabricated steel bracket can be used as one time for meeting the requirement of excavation diameter, and can be used as waste steel for recycling or reforming again during subsequent demolition, so that the fully prefabricated steel bracket has poor economic benefit.
Disclosure of utility model
Aiming at the defects or improvement demands of the prior art, the utility model provides an assembled guide table suitable for the starting and receiving of a super-large diameter shield, which solves the problems that the guide table is complex in construction, short in construction period, high in hoisting risk, low in construction efficiency and not capable of being secondarily used for the starting and receiving of shields with other diameters in the traditional super-large diameter shield construction through a pre-buried bottom plate steel plate, a concrete prefabricated member arranged on the pre-buried bottom plate steel plate, and a profile steel bracket and a counter-force frame arranged on the concrete prefabricated member.
In order to achieve the above object, an embodiment of the present utility model provides an assembled guide table suitable for originating and receiving an oversized diameter shield, including:
The steel plate of the embedded bottom plate, a concrete prefabricated member arranged on the steel plate of the embedded bottom plate, a profile steel bracket arranged on the concrete prefabricated member and a reaction frame;
the embedded bottom plate steel plate comprises a bottom plate concrete cushion layer arranged at the bottom of the embedded bottom plate steel plate;
The concrete prefabricated member is of an integral strip beam structure and comprises concrete prefabricated member welding steel plates arranged on the upper, lower and two side outer surfaces of the concrete prefabricated member;
The steel bracket comprises a main body steel main frame, steel bracket welding steel plates which are arranged at the bottoms of two sides of the main body steel main frame and fixedly connected with the concrete prefabricated member, and arc-shaped steel plates which are used for adapting to different types of oversized-diameter shields, and the arc-shaped steel plates are supported with the main body steel main frame through steel bracket supports.
Further, the concrete prefabricated member is fixedly connected with the pre-buried bottom plate steel plate and the profile steel bracket through the concrete prefabricated member welding steel plates at the lower part and the upper part respectively.
Further, the welding steel plates of the concrete prefabricated parts at two sides of the concrete prefabricated part are fixedly connected with the shield launching or receiving well wall through section steel.
Further, the height of the concrete prefabricated member is determined according to the type of the shield tunneling machine and the shield tunnel portal.
Further, the section steel bracket is installed and positioned according to the starting or receiving coordinates of the shield and the coordinates of the concrete prefabricated member.
Further, the length of the main frame of the main section steel changes according to the size of the sleeve of the shield machine.
Further, the main body section steel main frame is a plurality of, and is connected with each other through the steel plate.
Further, the embedded bottom plate steel plate is welded and synthesized by a plurality of rectangular steel plates.
Furthermore, the steel structures of the assembled guide table are all made of C50 steel.
In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:
1. The assembled guide table solves the problems that the guide table is complex in construction, short in construction period, high in hoisting risk and low in construction efficiency in the traditional ultra-large diameter shield construction, and cannot be reused for originating and receiving shields with other diameters.
2. The assembled guide table is convenient and simple to construct, is not influenced by a main body structure, can be prefabricated and spliced in advance, has the advantages of high efficiency and high speed under the condition of tight construction period, only needs 2 days for assembly when a shield is put into a well, is simple and convenient to detach and clean for a vertical shaft with a secondary structure, only needs hoisting, only needs 1 day for penetrating and removing, and greatly saves construction period for subsequent construction.
3. The assembled guide table has the advantages of short construction period and low loss, and can reduce labor and engineering cost.
4. The assembled guide table is suitable for shield starting of various types and sizes, including muddy water, soil pressure and TBM.
Drawings
FIG. 1 is a schematic view of an assembled guide table according to an embodiment of the utility model;
FIG. 2 is a schematic view of the mounting and positioning of a steel bracket according to an embodiment of the utility model;
Fig. 3 is an assembly schematic diagram of a pre-buried baseplate steel plate and a concrete prefabricated member according to an embodiment of the utility model.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-pre-buried bottom plate steel plate, 2-concrete prefabricated member, 21-concrete prefabricated member welding steel plate, 3-shaped steel bracket, 31-main body shaped steel main frame, 32-shaped steel bracket welding steel plate, 33-shaped steel bracket, 34-arc steel plate, 4-shield tunnel portal, 5-reaction frame and 6-shield machine sleeve.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
1-3, The embodiment of the utility model provides an assembled guide table suitable for the starting and receiving of a super-large diameter shield, which comprises a pre-buried bottom plate steel plate 1, a concrete prefabricated member 2, a profile steel bracket 3 and a reaction frame 5; the embedded bottom plate steel plate 1 is rooted on the concrete ground of the originating or receiving well through anchor bars; the embedded bottom plate steel plate 1 is welded and connected with the concrete prefabricated part 2 through two embedded concrete prefabricated part welding steel plates 21 at the lower part of the concrete prefabricated part 2; the section steel bracket 3 is welded and connected with the concrete prefabricated part 2 through a section steel bracket welding steel plate 32 at the corresponding position of the bottom of the concrete prefabricated part welding steel plate 21; the reaction frame 5 is welded and connected with the concrete prefabricated part 2 through a concrete prefabricated part welding steel plate 21. Specifically, the pre-buried bottom plate steel plate 1 is pre-buried on the flat ground of the starting or receiving well and is used for dispersing the weight of the large-diameter shield machine so as to ensure the stability of the whole assembly guide table; the concrete prefabricated member 2 is fixedly connected with the embedded bottom plate steel plate 1 and the profile steel bracket 3 through two preset concrete prefabricated member welding steel plates 21 at the upper part and the lower part, the height of the assembled guide table is adjusted in a self-height adjusting mode, and the direction of tunneling operation of the shield tunneling machine is positioned by matching with the profile steel bracket 3; the section steel bracket 3 utilizes a specific arc-shaped steel plate 34 to bear the shield tunneling machine, and the weight of the shield tunneling machine is dispersed by erecting the section steel bracket on a concrete prefabricated member, so that the tunneling operation is ensured to be carried out stably. The shield launching and receiving assembled guide table adopts C50 steel materials in steel structures, and solves the problems of complex construction, compact construction period, high hoisting risk, low construction efficiency and incapability of being secondarily utilized for launching and receiving other diameter shields in the traditional oversized diameter shield construction by adopting the combined oversized diameter shield guide table base.
As shown in fig. 3, the pre-buried steel plate 1 further includes a concrete cushion layer located on the pre-buried steel plate 1. Specifically, firstly, forming the pre-buried bottom plate steel plate 1 by welding a plurality of rectangular steel plates according to the size of an originating or receiving wellhead and the internal structure of a shaft bottom, and cutting the edge of the pre-buried bottom plate steel plate by a cutting tool so as to adapt to the field requirements and subsequent anchoring; according to the starting or receiving gradient of the shield, pouring a bottom plate concrete cushion layer on the pre-buried bottom plate steel plate ground of the starting or receiving well, and arranging anchor bars around the cushion layer, wherein the cushion layer concrete surface is ensured to be smooth, the gradient is consistent with the starting gradient, and the slope angle difference is <18 per mill; the embedded bottom plate steel plate 1 is installed on the bottom plate concrete cushion and is fixed with the bottom plate concrete cushion through the embedded anchor bars, and the gradient of the upper surface of the embedded bottom plate steel plate 1 is consistent with the starting or receiving gradient of the shield while the stability of the embedded bottom plate steel plate 1 is ensured. The weight of the shield machine is dispersed through the pre-buried bottom plate steel plate 1, so that the effect of stable support is achieved.
As shown in fig. 2 and 3, the concrete prefabricated member 2 further includes a concrete prefabricated member welding steel plate 21; the concrete prefabricated part welding steel plates 21 are pre-buried on the upper, lower and outer surfaces of two sides of the concrete prefabricated part 2 when the concrete prefabricated part 2 is poured and are used for welding the concrete prefabricated part 2 and other parts; before the concrete prefabricated part 2 is welded with the pre-buried baseplate steel plate 1 through the concrete prefabricated part welding steel plate 21, determining the installation position of the concrete prefabricated part 2 according to the shield starting or receiving coordinates; the height of the concrete prefabricated member 2 is constructed according to design requirements so as to ensure that the starting and receiving positions of the shield machine are matched with the shield tunnel portal 4.
Preferably, the size of the originating and receiving wellhead is 18.5 mm by 20m in this embodiment; the number of the concrete prefabricated parts is 9, the length is 17m, and the width is 2m.
Preferably, the concrete prefabricated part welding steel plates 21 on the two sides of the concrete prefabricated part 2 can be connected with the shield launching or receiving well wall through profile steel, so that the stability of the assembled guide table is improved.
As shown in fig. 1 and 2, the section steel bracket 3 comprises a main section steel main frame 31, a section steel bracket welded steel plate 32, a section steel bracket 33 and an arc steel plate 34; the main body section steel main frame 31 is 50cm wide and is connected with each other through steel plates, and section steel bracket welding steel plates 32 are respectively arranged at the bottoms of the left side and the right side of the main body section steel main frame and are used for being connected with the concrete prefabricated member 2; the left and right steel bracket brackets 33 are arranged on two sides of the main body steel main frame 31, and arc-shaped steel plates 34 are welded above the two brackets; specifically, the main body section steel main frame 31 maintains the stability of the section steel bracket 3 by welding with the concrete prefabricated member 2; the left and right side section steel bracket brackets 33 of the main section steel main frame 31 are matched with the shield machine sleeve 6 according to the specific arc-shaped structure of the arc-shaped steel plates 34 above the main section steel bracket, so that the function of stably supporting the shield is achieved.
As shown in fig. 1, the reaction frame 5 is welded on the concrete prefabricated member 2 and is positioned at one side of the section steel bracket 3 when the shield launching and receiving assembly type guide table is installed, so as to provide tunneling power for the shield machine.
The application principle of the utility model is as follows: according to design requirements, respectively designing the sizes of a pre-buried bottom plate steel plate 1, a concrete prefabricated member 2, a profile steel bracket 3 and a counter-force frame 5; after the floor concrete cushion layer is poured according to the size of the pre-buried floor steel plate 1, the pre-buried floor steel plate 1 is installed through anchor bars, then a concrete prefabricated member 2 is welded above the floor concrete cushion layer according to the shield starting or receiving coordinates, and then a profile steel bracket 3 is connected with the concrete prefabricated member 2 through welded steel plates at the corresponding positions of the profile steel bracket and the concrete prefabricated member; the reaction frame 5 is positioned on one side of the section steel bracket 3 and is connected with a concrete prefabricated part through a concrete prefabricated welding steel plate 21; the combined type oversized diameter shield launching and receiving guide table solves the problems that the guide table is complex in construction, short in construction period, high in hoisting risk, low in construction efficiency and not capable of being secondarily utilized for launching and receiving other diameter shields in the traditional oversized diameter shield construction.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (9)
1. The assembled guide table suitable for the ultra-large diameter shield launching and receiving is characterized by comprising an embedded bottom plate steel plate (1), a concrete prefabricated member (2) arranged on the embedded bottom plate steel plate (1), a profile steel bracket (3) arranged on the concrete prefabricated member (2) and a counterforce frame (5);
the embedded bottom plate steel plate (1) comprises a bottom plate concrete cushion layer arranged at the bottom of the embedded bottom plate steel plate;
the concrete prefabricated member (2) is of an integral strip-shaped beam structure and comprises concrete prefabricated member welding steel plates (21) arranged on the concrete prefabricated member and on the outer surfaces of two sides of the concrete prefabricated member;
The steel bracket (3) comprises a main body steel main frame (31), steel bracket welding steel plates (32) which are arranged at the bottoms of two sides of the main body steel main frame (31) and fixedly connected with the concrete prefabricated member (2), and arc-shaped steel plates (34) which are used for adapting to different types of oversized-diameter shields, wherein support is realized between the arc-shaped steel plates (34) and the main body steel main frame (31) through steel bracket supports (33).
2. The assembled guide table suitable for the starting and receiving of the ultra-large diameter shield according to claim 1, wherein the concrete prefabricated part (2) is fixedly connected with the pre-buried bottom plate steel plate (1) and the profile steel bracket (3) through a lower concrete prefabricated part welding steel plate (21) and an upper concrete prefabricated part welding steel plate (21).
3. The assembled guide table suitable for the starting and receiving of the ultra-large diameter shield according to claim 2, wherein the two sides of the concrete prefabricated member (2) are fixedly connected with the starting or receiving well wall of the shield through profile steel by concrete prefabricated member welding steel plates (21).
4. A fabricated guiding bench suitable for ultra-large diameter shield initiation and reception according to any of claims 1-3, characterized in that the concrete pre-form (2) height is determined according to the shield machine model and the shield tunnel gate (4).
5. A fabricated guide table suitable for use in ultra-large diameter shield launching and receiving according to any of claims 1-3, wherein the profile steel bracket (3) is mounted for positioning according to shield launching or receiving coordinates and coordinates of the concrete pre-form (2).
6. A fabricated guiding bench suitable for ultra-large diameter shield initiation and reception according to any of claims 1-3, characterized in that the length of the main body section steel main frame (31) varies according to the shield machine sleeve (6) size.
7. The assembled guide table for the originating and receiving of the ultra-large diameter shield according to claim 6, wherein the main body section steel main frames (31) are a plurality of and are connected with each other through steel plates.
8. A fabricated guide table suitable for use in ultra-large diameter shield launching and receiving according to any of claims 1-3, wherein the pre-buried floor steel plate (1) is welded from a plurality of rectangular steel plates.
9. A fabricated guide table suitable for use in ultra-large diameter shield launching and receiving according to any of claims 1-3, wherein the fabricated guide table steel structures are fabricated from C50 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322702459.3U CN220955622U (en) | 2023-10-09 | 2023-10-09 | Assembled guide table suitable for ultra-large diameter shield launching and receiving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322702459.3U CN220955622U (en) | 2023-10-09 | 2023-10-09 | Assembled guide table suitable for ultra-large diameter shield launching and receiving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220955622U true CN220955622U (en) | 2024-05-14 |
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ID=90982408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322702459.3U Active CN220955622U (en) | 2023-10-09 | 2023-10-09 | Assembled guide table suitable for ultra-large diameter shield launching and receiving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220955622U (en) |
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2023
- 2023-10-09 CN CN202322702459.3U patent/CN220955622U/en active Active
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