CN218204531U - Pipe jacking short-distance initial back wall - Google Patents
Pipe jacking short-distance initial back wall Download PDFInfo
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- CN218204531U CN218204531U CN202221219290.5U CN202221219290U CN218204531U CN 218204531 U CN218204531 U CN 218204531U CN 202221219290 U CN202221219290 U CN 202221219290U CN 218204531 U CN218204531 U CN 218204531U
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Abstract
The utility model relates to the technical field of pipe jacking equipment, in particular to a back wall for short-distance originating of pipe jacking; the back wall comprises at least one thick steel plate and a plurality of inclined strut section steels, wherein the thick steel plate and the inclined strut section steels are arranged above bottom plate reinforced concrete, the bottom of the thick steel plate is connected with pre-embedded section steels, the inclined strut section steels are uniformly distributed on the back surface of the thick steel plate, one end of each inclined strut section steel is connected with the thick steel plate, the other end of each inclined strut section steel is connected with the bottom plate reinforced concrete, and concrete is poured between the back surface of the thick steel plate and the wall of a working well. The utility model discloses a support of a plurality of bracing shaped steel at thick steel plate and its back can effectually resist the reaction force of owner's top hydro-cylinder, has pour the concrete between the back of thick steel plate and the working well wall of a well, can further strengthen the bearing structure of back wall, improves the stability of back wall.
Description
Technical Field
The utility model relates to a push pipe equipment technical field especially relates to a back wall is originated in push pipe short distance.
Background
The pipe jacking method is a non-excavation pipeline construction technology, compared with conventional excavation construction, the pipe jacking method has the advantages of small influence on surrounding environment and traffic, small occupied area, low noise, high construction speed, good safety and the like, and is widely applied to urban underground engineering. The back wall is a structure bearing pushing counterforce in the pipe jacking construction process, the stability and the bearing capacity of the back wall have important influence on the pipe jacking construction, in the conventional pipe jacking construction, a machine head is usually vertical to a hole door when being started, the back wall is generally arranged on a well wall opposite to the hole door, when the machine head needs to be started bidirectionally in a rectangular working well, the machine head is usually not vertical to the hole door, the back wall needs to be vertical to the machine head, and due to the limitation of the working well space, the back wall cannot be arranged according to the conventional method. Therefore, a need exists for a back wall that can accommodate small pitch jacking pipe initiations.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a back wall is originated in push pipe short distance, including at least one thick steel plate, a plurality of bracing shaped steel, the thick steel plate with bracing shaped steel sets up in bottom plate reinforced concrete top, each bracing shaped steel evenly distributed is in the back of thick steel plate, bracing shaped steel one end with the thick steel plate is connected, the other end with bottom plate reinforced concrete connects, the concrete has been pour between the back of thick steel plate and the working well wall of a well.
Furthermore, the bottom plate reinforced concrete is provided with embedded section steel, and the embedded section steel is fixedly connected with the bottom of the thick steel plate.
And furthermore, the steel plate comprises two thick steel plates, and the two thick steel plates are welded and fixed through grid type rib plates.
Furthermore, both ends of the diagonal bracing section steel are provided with sizing blocks, and the sizing blocks are welded on the diagonal bracing section steel.
Further, a sizing block at the upper end of the inclined strut type steel is welded and fixed with the thick steel plate.
Furthermore, a plurality of high-strength bolts are pre-embedded at the joint of the reinforced concrete of the bottom plate and the inclined strut section steel, and the high-strength bolts are connected with the sizing blocks at the lower end of the inclined strut section steel.
Further, 8 the diagonal brace section steels are included, wherein the length of 4 the diagonal brace section steels is larger than that of the other 4 diagonal brace section steels, and all the diagonal brace section steels are arranged in parallel.
Further, the type of the diagonal bracing section steel is 400 × 400 × 13 × 21HW.
Further, the thickness of the thick steel plate is 40mm.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art, have following beneficial effect:
1) The back wall provided by the utility model can effectively resist the reaction force of the main jacking oil cylinder by the thick steel plate and the support of the plurality of inclined strut section steels on the back surface of the thick steel plate, and concrete is poured between the back surface of the thick steel plate and the wall of a working well, so that the support structure of the back wall can be further strengthened, and the stability of the back wall is improved;
2) The back wall provided by the utility model can effectively shorten the distance between the pipe-jacking opening and the back wall, is suitable for various complex construction environments, and the traditional back wall is simpler to set and is not suitable for the condition of inclined starting;
3) The utility model provides a back wall can adapt to the adjustment of push pipe orbit through the angle of the back wall of difference, avoids excavation once more of working well, and reduction of erection time improves the efficiency of construction.
Drawings
FIG. 1 is a schematic structural view of a pipe-jacking short-distance originating back wall of the present invention;
figure 2 is the top view of the back wall after the pipe jacking short distance is originated.
1-thick steel plate; 2-diagonal bracing section steel; 3-bottom plate reinforced concrete; 4-concrete; 5-pre-burying section steel; 6-rib plate; 7-sizing block; 8-high strength bolt.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person skilled in the art without creative work belong to the scope of protection of the present invention based on the embodiments of the present invention. In the drawings, the size and relative sizes of certain portions may be exaggerated for clarity.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; the term "connected" refers to a connection between two elements or an interaction between two elements, and the term is used in the present invention to be understood as a specific meaning for those skilled in the art.
In the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "center", "horizontal", "vertical", "top", "bottom", "inner", "outer", and the like are used in the orientation or positional relationship shown in the drawings, only for convenience of description and simplicity of operation, and 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 considered as limiting the present invention.
Furthermore, in the description of the present invention, the terms "first" and "second" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
As shown in the attached drawing 1 of the specification, the utility model provides a back wall is originated to push pipe short distance, including at least one thick steel plate 1, a plurality of bracing shaped steel 2, thick steel plate 1 with bracing shaped steel 2 sets up above bottom plate reinforced concrete 3, each bracing shaped steel 2 evenly distributed is in the back of thick steel plate 1, bracing shaped steel 2 one end with thick steel plate 1 is connected, the other end with bottom plate reinforced concrete 3 is connected, the quantity, length and the mounted position of bracing shaped steel 2 can be set up according to actual construction conditions, concrete 4 has been pour between the back of thick steel plate 1 and the working well wall of a well, concrete 4 parcel bracing shaped steel 2 can strengthen the support to thick steel plate 1, form very firm back wall structure; the back wall mechanism in the embodiment mainly aims at the construction condition that the machine head is not perpendicular to the tunnel door, and can construct a back wall in a limited working well space.
The implementation mode is optimized, be provided with pre-buried shaped steel 5 in the bottom plate reinforced concrete 3, pre-buried shaped steel 5 with the bottom fixed connection of deep-seated strip steel 1, it is concrete, hoist and mount deep-seated strip steel 1 to pre-buried shaped steel 5's top, realize preliminary fixed with the bottom of deep-seated strip steel 1 and pre-buried shaped steel 5 welding, further fix deep-seated strip steel 1 by bracing shaped steel 2 at the deep-seated strip steel 1 back.
The optimized implementation mode comprises two thick steel plates 1, wherein the two thick steel plates 1 are arranged side by side from front to back, the two thick steel plates 1 are fixedly welded through rib plates 6 in a grid mode, plates with the thickness of 40mm are preferably selected from the thick steel plates 1 to be made, the two thick steel plates 1 are used in the embodiment, the number and the size of the thick steel plates 1 can be set according to actual use requirements, and when the number of the thick steel plates 1 is larger than 1, the adjacent thick steel plates 1 are fixedly welded through the rib plates 6.
In an optimized implementation mode, two ends of the diagonal bracing section steel 2 are respectively provided with a sizing block 7, the sizing blocks 7 are welded on two end surfaces of the diagonal bracing section steel 2, the plane of each sizing block 7 is parallel to the mounting surface, and the sizing blocks at the upper end of the diagonal bracing section steel are welded and fixed with the thick steel plate, and can be mechanically connected through bolts; a plurality of high-strength bolts 8 are pre-buried in the bottom plate reinforced concrete 3, the positions of the high-strength bolts 8 correspond to the positions of the sizing blocks 7 at the lower end of the inclined strut section steel 2, each sizing block 7 corresponds to 6 high-strength bolts 8, after the inclined strut section steel 2 is hoisted to the corresponding position, the sizing blocks 7 at the lower end of the inclined strut section steel 2 are mechanically connected with the pre-buried high-strength bolts 8, and the inclined strut section steel 2 can support the thick steel plate 1.
In an optimized implementation manner, as shown in fig. 2 of the specification, the embodiment includes 8 pieces of the bracing section steel, the type of the bracing section steel is 400 × 400 × 13 × 21HW, wherein the length of 4 pieces of the bracing section steel is greater than that of the other 4 pieces of the bracing section steel, the bracing section steels are arranged in parallel, and the bracing section steels are uniformly arranged on the back surface of the thick steel plate, so that the bracing force on the thick steel plate is more uniform.
Further, the steel plate comprises 8 inclined strut section steels 2, wherein the length of 4 inclined strut section steels 2 is greater than that of the other 4 inclined strut section steels 2, each inclined strut section steel 2 is arranged in parallel, after the installation of each inclined strut section steel 2 is completed, concrete 4 is poured between the back surface of the steel plate 1 and a working well, the steel plate 1 can be further supported, and the structure is firmer.
The back wall after the short-distance originating of the jacking pipe provided by the embodiment is used for processing a working well, firstly carrying out site leveling, compaction, cushion layer forming, formwork erecting and reinforcing steel bar binding, welding the embedded steel 5 and the high-strength bolt 8, and completing the construction of the reinforced concrete 3 of the bottom plate; the method comprises the steps of completing the assembly of more than one thick steel plate, conveying the thick steel plates to a preset position of a bottom plate reinforced concrete 3 in a hoisting mode, welding and fixing the bottom of the thick steel plate 1 and embedded section steel 5, conveying inclined strut section steel 2 to a corresponding position in the hoisting mode, firstly connecting a sizing block 7 at the lower end of the inclined strut section steel 2 with a high-strength bolt 8, and then welding and fixing the sizing block 7 at the upper end of the inclined strut section steel 2 with the thick steel plate 1; after the thick steel plate 1 and the inclined strut type steel 2 are installed, C35 plain concrete is poured between the back of the thick steel plate 1 and the wall of the working well through the formwork, maintenance is conducted, and when the design strength is reached, the formwork can be disassembled, and construction of a back wall is completed.
And those not described in detail in this specification are well within the skill of the art.
It will be appreciated by those skilled in the art that the invention can be embodied in many other specific forms without departing from the spirit or scope of the invention. While the embodiments of the present invention have been described, it is to be understood that the invention is not limited to such embodiments, and that changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The back wall is characterized by comprising at least one thick steel plate and a plurality of inclined strut section steels, wherein the thick steel plate and the inclined strut section steels are arranged above bottom plate reinforced concrete, the inclined strut section steels are uniformly distributed on the back of the thick steel plate, one ends of the inclined strut section steels are connected with the thick steel plate, the other ends of the inclined strut section steels are connected with the bottom plate reinforced concrete, and concrete is poured between the back of the thick steel plate and the wall of a working well.
2. The pipe-jacking short-distance originating back wall as claimed in claim 1, wherein pre-embedded section steel is arranged in the bottom plate reinforced concrete, and the pre-embedded section steel is fixedly connected with the bottom of the thick steel plate.
3. The pipe-jacking short-distance originating back wall according to claim 1, comprising two thick steel plates, wherein the two thick steel plates are welded and fixed through grid-type rib plates.
4. The pipe-jacking short-distance originating back wall as claimed in claim 1, wherein both ends of the diagonal bracing section steel are provided with sizing blocks, and the sizing blocks are welded on the diagonal bracing section steel.
5. The pipe-jacking short-distance originating back wall according to claim 4, wherein a sizing block at the upper end of the diagonal bracing section steel is welded and fixed with the thick steel plate.
6. The pipe-jacking short-distance originating back wall as claimed in claim 4, wherein a plurality of high-strength bolts are pre-embedded at the joints of the reinforced concrete of the bottom plate and the inclined strut section steel, and the high-strength bolts are connected with the sizing blocks at the lower ends of the inclined strut section steel.
7. The pipe-jacking short-distance originating back wall as claimed in claim 1, comprising 8 of said diagonal section steels, wherein the length of 4 of said diagonal section steels is greater than the length of the other 4 of said diagonal section steels, and each of said diagonal section steels are arranged in parallel.
8. The pipe-jacking short-distance originating back wall according to claim 1, wherein the type of the diagonal section steel is 400 x 13 x 21HW.
9. The pipe-jacking short-distance originating back wall according to claim 1, wherein the thickness of the thick steel plate is 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221219290.5U CN218204531U (en) | 2022-05-19 | 2022-05-19 | Pipe jacking short-distance initial back wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221219290.5U CN218204531U (en) | 2022-05-19 | 2022-05-19 | Pipe jacking short-distance initial back wall |
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| CN218204531U true CN218204531U (en) | 2023-01-03 |
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| CN202221219290.5U Active CN218204531U (en) | 2022-05-19 | 2022-05-19 | Pipe jacking short-distance initial back wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117646638A (en) * | 2024-01-30 | 2024-03-05 | 中铁二十二局集团轨道工程有限公司 | Force transmission construction method by using top pipe reaction frame of existing station main body structure |
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2022
- 2022-05-19 CN CN202221219290.5U patent/CN218204531U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117646638A (en) * | 2024-01-30 | 2024-03-05 | 中铁二十二局集团轨道工程有限公司 | Force transmission construction method by using top pipe reaction frame of existing station main body structure |
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