CN215830508U - Shield constructs reaction frame that starts - Google Patents
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- CN215830508U CN215830508U CN202122500888.3U CN202122500888U CN215830508U CN 215830508 U CN215830508 U CN 215830508U CN 202122500888 U CN202122500888 U CN 202122500888U CN 215830508 U CN215830508 U CN 215830508U
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Abstract
The utility model discloses a shield starting reaction frame which has enough strength and rigidity and can meet the requirements of engineering construction. The device comprises a main beam frame, a supporting steel pipe group and an embedded group; the main beam frame is a rectangular frame structure, the embedded parts comprise a first embedded part group, a second embedded part group, a third embedded part group, a fourth embedded part group, a fifth embedded part group and a sixth embedded part group, the first embedded part group and the second embedded part group are arranged on the top plate end wall of the shield well structure, the third embedded part group and the fourth embedded part group are arranged on the bottom plate end wall of the shield well structure, the fifth embedded part group is arranged on the side wall of the shield well structure, and the sixth embedded part group is arranged on the bottom plate of the shield well structure; the supporting steel pipe groups comprise a first steel pipe group, a second steel pipe group, a third steel pipe group, a fourth steel pipe group, a fifth steel pipe group and a sixth steel pipe group; the supporting steel pipe groups correspond to the embedded pieces one by one, and the supporting steel pipe groups are connected between the main beam frame and the embedded pieces.
Description
Technical Field
The utility model relates to the technical field of shield construction, in particular to a shield starting reaction frame.
Background
The shield reaction frame is a steel member for providing propelling force and positioning duct pieces for the shield tunneling machine during starting, generally consists of a portal frame and a plurality of supporting steel pipes, and has enough strength and rigidity to meet the use requirement; when our company builds a western navigation harbor passenger transportation central station-warm mountain road station in a 19 th-line second-stage engineering civil engineering 4-work area of Chengdu rail transit, it is found that the position of an embedded part of the existing reaction frame structure is unreasonable, so that the supporting steel pipe cannot play the greatest role, and the finally formed reaction frame structure cannot meet the strength and rigidity required by engineering.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the background art, the utility model provides a shield starting reaction frame, which reasonably arranges the installation positions of embedded parts, so that the finally formed reaction frame has enough strength and rigidity and can meet the requirements of engineering construction.
The utility model is realized by the following technical scheme:
a shield starting reaction frame comprises a main beam frame, a support steel pipe group and a pre-buried group; the main beam frame is of a rectangular frame structure, the embedded parts comprise a first embedded part group, a second embedded part group, a third embedded part group, a fourth embedded part group, a fifth embedded part group and a sixth embedded part group, the first embedded part group and the second embedded part group are arranged on a top plate end wall of the shield well structure, the third embedded part group and the fourth embedded part group are arranged on a bottom plate end wall of the shield well structure, the fifth embedded part group is arranged on a side wall of the shield well structure, and the sixth embedded part group is arranged on a bottom plate of the shield well structure; the support steel pipe group comprises a first steel pipe group, a second steel pipe group, a third steel pipe group, a fourth steel pipe group, a fifth steel pipe group and a sixth steel pipe group; the first steel pipe group is obliquely or horizontally connected between the first embedded group and the main beam frame, the second steel pipe group is obliquely connected between the second embedded group and the main beam frame, the third steel pipe group is horizontally connected between the third embedded group and the main beam frame, the fourth steel pipe group is horizontally connected between the fourth embedded group and the main beam frame, the fifth steel pipe group is horizontally connected between the fifth embedded group and the main beam frame, and the sixth steel pipe group is obliquely connected between the sixth embedded group and the main beam frame; the supporting steel pipe group and the embedded group are arranged in a one-to-one correspondence mode, the installation position of the embedded group is clearly limited, the installation position of the embedded group is arranged in combination with the shield well structure, the installation position of the steel pipe group is limited, the structure of the reaction frame is favorably optimized, the stability of the reaction frame is enhanced, and the strength and the rigidity of the reaction frame are improved.
Furthermore, the main beam frame comprises an upper cross beam, a lower cross beam, a left vertical beam and a right vertical beam, wherein the upper cross beam, the right vertical beam, the lower cross beam and the left vertical beam all adopt box-shaped welding sections, and the four are welded in sequence to form a rectangular frame structure; connecting beams are connected between the upper cross beam and the left vertical beam, between the upper cross beam and the right vertical beam, between the lower cross beam and the left vertical beam and between the lower cross beam and the right vertical beam; the main beam frame is stable in structure, the structure of the main beam frame is reinforced through the connecting beam, and the beam body structure with the box-shaped welding section is more beneficial to bearing higher pressure and has higher strength.
Further, each of the first steel pipe group and the third steel pipe group includes at least two support round steel pipes, the first steel pipe group is connected to both ends of the upper cross member, and the third steel pipe group is connected to both ends of the lower cross member; each of the second steel pipe group and the fourth steel pipe group includes at least three pieces of support H steel, the second steel pipe group is connected to a middle portion of the upper cross member, and the fourth steel pipe group is connected to an end portion of the lower cross member; the fifth steel pipe group and the sixth steel pipe group each include at least three supporting circular steel pipes, the fifth steel pipe group is connected to the middle of the right vertical beam, and the sixth steel pipe group is connected to the middle of the left vertical beam.
Furthermore, the first steel pipe group and the third steel pipe group both comprise two supporting round steel pipes, two end parts of the upper cross beam are both connected with one supporting round steel pipe, and two end parts of the lower cross beam are both connected with one supporting round steel pipe; the second steel pipe group and the fourth steel pipe group each include three pieces of support H steel; the fifth steel pipe group and the sixth steel pipe group respectively comprise three supporting round steel pipes.
Further, the supporting round steel tube is
The supporting H steel is 300H-shaped steel.
Further, the first embedded part group comprises two embedded parts of a first specification, and the two embedded parts of the first specification correspond to the two supporting round steel pipes of the first steel pipe group one by one; the second embedded part group comprises three embedded parts with a second specification, and the three embedded parts with the second specification correspond to the three supporting H steels of the second steel pipe group one by one; the third embedded part group comprises two embedded parts of a first specification, and the two embedded parts of the first specification correspond to the two supporting round steel pipes of the third steel pipe group one by one; the fourth embedded part group comprises three embedded parts with a second specification, and the three embedded parts with the second specification correspond to the three supporting H steels of the fourth steel pipe group one by one; the fifth embedded part group comprises three embedded parts of a first specification, and the three embedded parts of the first specification correspond to the three supporting round steel pipes of the fifth steel pipe group one by one; the sixth embedded part group comprises three embedded parts with a third specification, and the three embedded parts with the third specification correspond to the three supporting round steel pipes of the sixth steel pipe group one by one.
Furthermore, the embedded parts of the first specification are steel plates of 800 multiplied by 20mm, the embedded parts of the second specification are steel plates of 400 multiplied by 20mm, the embedded parts of the third specification are steel plates of 1200 multiplied by 1500 multiplied by 20mm, the specifications of the embedded parts are divided, the specifications of the embedded parts are determined according to the connecting positions and the connecting modes of the supporting steel pipes, the most appropriate specifications of the embedded parts are selected to correspond to the supporting steel pipes, and waste caused by overlarge embedded parts or influence on the strength and rigidity of the reaction frame caused by undersize embedded parts is avoided.
Furthermore, the included angles between the axes of the three supporting round steel tubes of the sixth steel tube group and the horizontal plane are all 30 degrees; three support circular steel tubes of parallel arrangement can carry out the support of same direction to the reaction frame, if three support circular steel tubes are not parallel, to the support direction difference of reaction frame, then can carry out pulling of certain dynamics to the reaction frame, can influence the rigidity and the intensity of reaction frame.
Furthermore, the connecting beam is made of H-shaped steel, so that the reaction frame is ensured to have sufficient strength and rigidity, and the consumption of steel is reduced.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the supporting steel pipe groups are classified, the installation positions of the embedded piece groups are specified, and the supporting steel pipe groups are properly matched with the embedded piece groups, so that the formed reaction frame has enough strength and rigidity, and the engineering requirements are met; the beams of the main frame beam are welded by adopting box-shaped sections, so that the stability and the strength of the main frame beam are ensured, and the stability of the main frame beam is further improved by using the connecting beam; the specifications of the embedded part are determined according to the connecting position and the connecting structure of the supporting steel pipe and the specifications of the embedded part, so that the reaction frame has sufficient strength and rigidity, and the steel consumption of the embedded part is saved.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a block diagram a of a main beam frame and a support steel pipe set according to an embodiment of the present invention;
FIG. 2 is a block diagram b of a main beam frame and a support steel pipe set according to an embodiment of the present invention;
FIG. 3 is a block diagram c of a main beam frame and support tube set according to an embodiment of the present invention;
fig. 4 is a front view of an embodiment of the present invention in a direction of shield tunneling.
Reference numbers and corresponding part names in the drawings:
11-a first steel pipe group, 12-a second steel pipe group, 13-a third steel pipe group, 14-a fourth steel pipe group, 15-a fifth steel pipe group, 16-a sixth steel pipe group, 21-an upper cross beam, 22-a lower cross beam, 23-a left vertical beam, 24-a right vertical beam and 25-a connecting beam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the utility model. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.
Examples
As shown in fig. 1 to 4, a shield starting reaction frame according to an embodiment of the present invention includes a main beam frame, a supporting steel pipe set, and an embedded set (not shown in the drawings), where the embedded set is installed on a shield shaft structure, and the supporting steel pipe set is connected between the main beam frame and the embedded set to form a reaction frame structure together; it should be noted that fig. 1, 2 and 3 all show the same state of the same structure, and the three figures are only different in the reference number.
In the above technical solution, the main beam frame includes four beams, i.e., an upper beam 21, a right vertical beam 24, a lower beam 22 and a left vertical beam 23, four beams are welded in sequence to form a rectangular frame structure, and all four beams adopt box-shaped welded sections, so as to improve the stability of the main beam frame, and connecting beams 25 are connected between the upper beam 21 and the left vertical beam 23, between the upper beam 21 and the right vertical beam 24, between the lower beam 22 and the left vertical beam 23, and between the lower beam 22 and the right vertical beam 24, in this embodiment, the structures of the four connecting beams 25 are identical, the lengths are identical, and extension lines of the four connecting beams 25 intersect to form a square structure, and the connecting beams 25 adopt H-shaped steel.
The embedded part group is divided into six groups, namely a first embedded part group, a second embedded part group, a third embedded part group, a fourth embedded part group, a fifth embedded part group and a sixth embedded part group, wherein the first embedded part group and the second embedded part group are arranged on the top plate end wall of the shield shaft structure, the third embedded part group and the fourth embedded part group are arranged on the bottom plate end wall of the shield shaft structure, the fifth embedded part group is arranged on the side wall of the shield shaft structure, and the sixth embedded part group is arranged on the bottom plate of the shield shaft structure.
Corresponding to the embedded groups, the supporting steel tube groups are also divided into six groups, namely a first steel tube group 11, a second steel tube group 12, a third steel tube group 13, a fourth steel tube group 14, a fifth steel tube group 15 and a sixth steel tube group 16, wherein the first steel tube group 11 is horizontally or obliquely connected between the first embedded group and the upper cross beam 21, the second steel tube group 12 is obliquely connected between the second embedded group and the upper cross beam 21, the third steel tube group 13 is horizontally connected between the third embedded group and the lower cross beam 22, the fourth steel tube group 14 is horizontally connected between the fourth embedded group and the lower cross beam 22, the fifth steel tube group 15 is horizontally connected between the fifth embedded group and the right vertical beam 24, and the sixth steel tube group 16 is obliquely connected between the sixth embedded group and the left vertical beam 23, the horizontal direction mentioned in the above technical scheme refers to the tunneling direction of the shield machine at the point, namely the axial direction of the main beam frame, the inclined direction is a direction with an included angle with the horizontal direction, the horizontal connection means that the supporting steel pipe is directly supported and arranged between the main beam frame and the embedded part, and the inclined connection means that the supporting steel pipe is obliquely supported and arranged between the main beam frame and the embedded part.
Specifically, the first steel pipe group 11 and the third steel pipe group 13 each include two supporting circular steel pipes, the two supporting circular steel pipes of the first steel pipe group 11 are connected to two end portions of the upper cross beam 21, respectively, and the two supporting circular steel pipes of the third steel pipe group 13 are connected to two end portions of the lower cross beam 22, respectively; the second steel pipe group 12 and the fourth steel pipe group 14 both comprise three pieces of supporting H steel, the three pieces of supporting H steel of the second steel pipe group 12 are all connected to the middle of the upper cross beam 21 and are uniformly distributed, the three pieces of supporting H steel of the fourth steel pipe group 14 are all connected to the middle of the lower cross beam 22 and are uniformly distributed; the fifth steel pipe group 15 and the sixth steel pipe group 16 both comprise three supporting round steel pipes, the three round steel pipes of the fifth steel pipe group 15 are all connected to the middle of the right vertical beam 24 and are uniformly distributed, the three round steel pipes of the sixth steel pipe group 16 are all connected to the middle of the left vertical beam 23 and are uniformly distributed; the middle part of the beam in the technical scheme is the position except the two ends of the beam, is called as the middle part, and is not the middle line position of the finger beam; in the technical scheme, the connection of the supporting round steel pipe or the supporting H steel and the beam only means that one end part of the supporting round steel pipe or the supporting H steel is connected with the corresponding embedded part, and the other end part of the supporting round steel pipe or the supporting H steel is connected with the corresponding embedded part.
In practice, the supporting round steel pipe is adopted
300H-shaped steel is adopted as the steel pipe and the supporting H-shaped steel.
The first embedded part group also comprises two embedded parts corresponding to the supporting steel pipe groups, the two embedded parts are embedded parts of a first specification, and the two embedded parts of the first specification correspond to the two supporting round steel pipes of the first steel pipe group 11 one by one; the second embedded parts comprise three embedded parts with a second specification, and the three embedded parts with the second specification correspond to the three supporting H steels of the second steel pipe group 12 one by one; the third embedded part group comprises two embedded parts of a first specification, and the two embedded parts of the first specification correspond to the two round supporting steel pipes I of the third steel pipe group 13; the fourth embedded part group comprises three embedded parts of a second specification, and the three embedded parts of the second specification correspond to the three supporting H steels of the fourth steel pipe group 14 one by one; the fifth embedded part comprises three embedded parts of the first specification, and the three embedded parts of the second specification correspond to the three supporting round steel pipes of the fifth steel pipe group 15 one by one; the sixth embedded part group comprises three embedded parts of a third specification, and the three embedded parts of the third specification correspond to the three round supporting steel pipes of the sixth steel pipe group 16 one by one; in the above technical solution, the first-specification embedded parts are steel plates with a first-specification embedded part of 800 × 800 × 20mm, the second-specification embedded parts are steel plates with a second-specification embedded part of 400 × 400 × 20mm, and the third-specification embedded parts are steel plates with a third-specification embedded part of 1200 × 1500 × 20 mm.
Three support circular steel tubes to sixth steel nest of tubes 16, three support circular steel tubes all incline to connect between the third built-in fitting on left vertical beam 23 and shield structure bottom plate, three support circular steel tube parallel arrangement, and the axis of three support circular steel tubes and the contained angle between the plane of third specification built-in fitting place are 30 degrees, in this embodiment, the plane of third specification built-in fitting place is the horizontal plane, three support circular steel tube tie point evenly distributed on the reaction frame, help dispersing the effort to the reaction frame on whole, avoid certain some atress of reaction frame too big, cause destruction to reaction frame own structure, and three support circular steel tubes of parallel arrangement are along same direction to the effort of reaction frame, avoid because the difference of effort direction, cause certain pulling to the reaction frame, cause destruction to reaction frame own structure.
The reaction frame structure that this embodiment provided, through the structure, mounted position and connected mode's difference, divide into different groups with built-in fitting subassembly and support steel pipe subassembly, make built-in fitting group and support steel pipe group between can reach a suitable matching effect, when guaranteeing not extravagant steel, ensure the intensity and the rigidity of reaction frame, and, except that limiting built-in fitting group and support steel pipe group, still limit the structure of girder frame, adopt box welding cross-section between four girders of girder frame, improve the steadiness of girder frame.
Calculating the stress of the reaction frame by combining the actual installation position of the reaction frame, taking the water and soil pressure and the safety coefficient of a shield cutter head into consideration according to the horizontal geological data of the tunnel entering section and the buried soil depth of the tunnel opening, and taking 22000kN as the shield starting thrust adopted by the calculation; through calculation, the shearing strength and the bending strength of each component of the reaction frame meet the standard requirements.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A shield starting reaction frame is characterized by comprising a main beam frame, a supporting steel pipe group and a pre-buried group; the main beam frame is a rectangular frame structure, the embedded part groups comprise a first embedded part group, a second embedded part group, a third embedded part group, a fourth embedded part group, a fifth embedded part group and a sixth embedded part group, the first embedded part group and the second embedded part group are arranged on the top plate end wall of the shield well structure, the third embedded part group and the fourth embedded part group are arranged on the bottom plate end wall of the shield well structure, the fifth embedded part group is arranged on the side wall of the shield well structure, and the sixth embedded part group is arranged on the bottom plate of the shield well structure; the supporting steel pipe groups comprise a first steel pipe group (11), a second steel pipe group (12), a third steel pipe group (13), a fourth steel pipe group (14), a fifth steel pipe group (15) and a sixth steel pipe group (16); the first steel pipe group (11) is obliquely or horizontally connected between the first embedded group and the main beam frame, the second steel pipe group (12) is obliquely connected between the second embedded group and the main beam frame, the third steel pipe group (13) is horizontally connected between the third embedded group and the main beam frame, the fourth steel pipe group (14) is horizontally connected between the fourth embedded group and the main beam frame, the fifth steel pipe group (15) is horizontally connected between the fifth embedded group and the main beam frame, and the sixth steel pipe group (16) is obliquely connected between the sixth embedded group and the main beam frame.
2. The shield originating reaction frame of claim 1,
the main beam frame comprises an upper cross beam (21), a lower cross beam (22), a left vertical beam (23) and a right vertical beam (24), the upper cross beam (21), the right vertical beam (24), the lower cross beam (22) and the left vertical beam (23) all adopt box-shaped welding sections, and the four are welded in sequence to form a rectangular frame structure;
the connecting beam (25) is connected between the upper cross beam (21) and the left vertical beam (23), between the upper cross beam (21) and the right vertical beam (24), between the lower cross beam (22) and the left vertical beam (23) and between the lower cross beam (22) and the right vertical beam (24).
3. The shield originating reaction frame of claim 2,
the first steel pipe group (11) and the third steel pipe group (13) comprise at least two supporting round steel pipes, the first steel pipe group (11) is connected to two ends of the upper cross beam (21), and the third steel pipe group (13) is connected to two ends of the lower cross beam (22);
the second steel pipe group (12) and the fourth steel pipe group (14) comprise at least three pieces of supporting H steel, the second steel pipe group (12) is connected to the middle of the upper cross beam (21), and the fourth steel pipe group (14) is connected to the end of the lower cross beam (22);
fifth steel nest of tubes (15) with sixth steel nest of tubes (16) all include three piece at least support circular steel tubes, fifth steel nest of tubes (15) are connected perpendicular roof beam (24) middle part in the right side, sixth steel nest of tubes (16) are connected perpendicular roof beam (23) middle part in a left side.
4. A shield originating reaction frame according to claim 3,
the first steel pipe group (11) and the third steel pipe group (13) respectively comprise two supporting round steel pipes, two end parts of the upper cross beam (21) are respectively connected with one supporting round steel pipe, and two end parts of the lower cross beam (22) are respectively connected with one supporting round steel pipe;
the second steel tube set (12) and the fourth steel tube set (14) comprise three supporting H steels;
the fifth steel pipe group (15) and the sixth steel pipe group (16) comprise three supporting round steel pipes.
5. The shield starting reaction frame as claimed in claim 4, wherein the supporting round steel pipe is a steel pipe with a diameter of 609mm x 16mm, and the supporting H steel is a 300H steel.
6. The shield originating reaction frame of claim 4,
the first embedded part group comprises two embedded parts of a first specification, and the two embedded parts of the first specification correspond to the two round supporting steel pipes of the first steel pipe group (11) one by one;
the second embedded part group comprises three embedded parts with a second specification, and the three embedded parts with the second specification correspond to the three supporting H steels of the second steel pipe group (12) one by one;
the third embedded part group comprises two embedded parts of a first specification, and the two embedded parts of the first specification correspond to the two round supporting steel pipes of the third steel pipe group (13) one by one;
the fourth embedded part group comprises three embedded parts with a second specification, and the three embedded parts with the second specification correspond to the three supporting H steels of the fourth steel pipe group (14) one by one;
the fifth embedded part group comprises three embedded parts of a first specification, and the three embedded parts of the first specification correspond to the three supporting round steel pipes of the fifth steel pipe group (15) one by one;
the sixth embedded part group comprises three embedded parts of a third specification, and the three embedded parts of the third specification correspond to the three supporting round steel tubes of the sixth steel tube group (16) one by one.
7. The shield starting reaction frame of claim 6, wherein the first gauge embedment is a 800 x 20mm steel plate, the second gauge embedment is a 400 x 20mm steel plate, and the third gauge embedment is a 1200 x 1500 x 20mm steel plate.
8. A shield launching reaction frame according to claim 4, characterised in that the axes of the three supporting round steel tubes of the sixth steel tube group (16) are all at an angle of 30 degrees to the horizontal.
9. A shield originating reaction frame according to claim 2, characterized in that the connecting beam (25) is H-section steel.
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| CN202122500888.3U CN215830508U (en) | 2021-10-18 | 2021-10-18 | Shield constructs reaction frame that starts |
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| CN202122500888.3U CN215830508U (en) | 2021-10-18 | 2021-10-18 | Shield constructs reaction frame that starts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118242096A (en) * | 2024-05-28 | 2024-06-25 | 中铁十一局集团城市轨道工程有限公司 | Super-large-diameter shield reaction frame structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118242096A (en) * | 2024-05-28 | 2024-06-25 | 中铁十一局集团城市轨道工程有限公司 | Super-large-diameter shield reaction frame structure and construction method thereof |
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