Lifting structure of steel-concrete combined pipe jacking well for water supply and drainage engineering

Abstract

The utility model discloses a lifting structure of a water supply and drainage engineering steel-concrete combined pipe-jacking well, which belongs to the technical field of municipal water supply and drainage engineering pipe-jacking wells and comprises a standard knot formed by a plurality of standard parts in a surrounding mode. And the multiple lifting mechanisms are evenly arranged in the circumferential direction of the standard knot, the multiple lifting mechanisms are detachably connected with the standard knot, and the lifting mechanisms are used for lifting the standard knot. According to the utility model, the layered backfilling of the pipe-jacking well foundation pit and the lifting of the upper steel structure retaining wall can be implemented in a staggered and circulating manner, so that the recovery of the standard knot is realized, the structural material investment is reduced, the engineering investment is saved, the construction technical difficulty can be effectively reduced, the engineering progress is accelerated, and the construction safety of the foundation pit is ensured.

Description

Technical Field

[0001] This utility model relates to the field of pipe jacking technology for municipal water supply and drainage engineering, and in particular to a lifting structure for a steel-concrete composite pipe jacking well for water supply and drainage engineering. Background Technology

[0002] Pipe jacking is a construction process in which mechanical components installed in a jacking shaft, using a jacking device, propel the pipe section by section underground, and finally receive it through the jacking shaft to complete the pipe laying. The jacking shaft consists of a working shaft and a receiving shaft, which serve as the starting and ending underground structures for the pipe jacking operation, respectively.

[0003] In existing technologies, pipe jacking wells are conventionally constructed with reinforced concrete and are temporary, one-time structures that cannot be recycled or reused. This not only increases construction costs but also reduces resource utilization efficiency. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a lifting structure for a steel-concrete composite jacking well in water supply and drainage engineering, which can be recycled and reused, thereby reducing material waste and improving resource utilization efficiency.

[0005] According to an embodiment of the present invention, a lifting structure for a steel-concrete composite pipe jacking well for water supply and drainage engineering includes a standard section, which is formed by multiple standard parts; multiple lifting mechanisms are provided along the circumference of the standard section, and the multiple lifting mechanisms are detachably connected to the standard section. The lifting mechanisms are used to lift the standard section.

[0006] According to an embodiment of this utility model, a lifting structure for a steel-concrete composite pipe jacking well in a water supply and drainage engineering project has at least the following beneficial effects: During the pipe jacking construction process, several standard sections are sequentially connected along the axial direction to form an upper steel structure retaining wall, which is connected to the upper end of the lower reinforced concrete structure retaining wall cast on site. Since the pipe jacking well is constructed using a caisson process, and as a temporary structure during the construction period, the pipe jacking well pit needs to be backfilled after the pipe jacking construction is completed. During the backfilling process, the upper steel structure retaining wall can be recycled and reused. The layered backfilling of the pipe jacking well pit and the lifting of the upper steel structure retaining wall are carried out alternately and cyclically. After each small-distance lifting of the upper steel structure retaining wall, the pipe jacking well needs to be backfilled in layers immediately. This reduces the input of structural materials, saves project investment, effectively reduces the technical difficulty of construction, speeds up the project progress, and ensures the construction safety of the pit.

[0007] According to some embodiments of the present invention, a single standard section is composed of 5 to 10 standard parts.

[0008] According to some embodiments of the present invention, the standard part includes two arc-shaped parts and two connecting parts. The two arc-shaped parts and the two connecting parts enclose an arc-shaped frame. A first supporting part and a plurality of second supporting parts are provided between the arc-shaped frame. The first supporting part is arranged parallel between the two arc-shaped parts. The plurality of second supporting parts are all arranged between the first supporting part and the connecting parts. The plurality of second supporting parts are all perpendicular to the arc-shaped parts.

[0009] According to some embodiments of this utility model, the arc-shaped parts are provided with multiple flange holes, and two adjacent standard parts are connected by bolts through multiple flange holes.

[0010] According to some embodiments of this utility model, the lifting mechanism includes: a first panel with a first through hole; a second panel with a second through hole, the second panel being connected to the first panel via a connecting panel, a limiting groove being formed between the first panel, the second panel, and the connecting panel, and a standard part being partially embedded in the limiting groove so that the first panel, the second panel, and the standard part are bolted to the flange hole via corresponding first and second through holes; and a driving member, the end of the first panel away from the second panel being connected to the ground via the driving member, the driving member being used to drive the first panel to rise and fall.

[0011] According to some embodiments of this utility model, the shape of the limiting groove is consistent with the curvature of the standard part.

[0012] According to some embodiments of this utility model, the height range of the standard section is 0.8m to 1.5m.

[0013] According to some embodiments of this utility model, the thickness of the standard part ranges from 6mm to 10mm.

[0014] According to some embodiments of this utility model, the standard component is a steel structure.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the lifting structure of a steel-concrete composite pipe jacking well for water supply and drainage engineering according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Structural diagram of a standard component;

[0019] Figure 3 for Figure 1 Schematic diagram of the lifting mechanism;

[0020] Figure 4 for Figure 3 Side view in the middle;

[0021] Figure 5 for Figure 1 Sectional view in;

[0022] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0023] Figure label:

[0024] Standard section 100, standard part 110, arc part 111, flange hole 1111, connector 112, first support 113, second support 114;

[0025] Lifting mechanism 200, first panel 210, first through hole 211, second panel 220, second through hole 221, connecting panel 230, limiting groove 240, driving component 250;

[0026] Ground 10. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. Any mention of "first" or "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] refer to Figures 1 to 6 This invention describes a lifting structure for a steel-concrete composite pipe jacking well in a water supply and drainage project, according to an embodiment of the present invention.

[0032] like Figures 1 to 6 As shown, a lifting structure for a steel-concrete composite pipe jacking well in a water supply and drainage project includes a standard section 100, which is formed by multiple standard parts 110; multiple lifting mechanisms 200, which are evenly arranged along the circumference of the standard section 100, and the multiple lifting mechanisms 200 are detachably connected to the standard section 100. The lifting mechanisms 200 are used to lift the standard section 100.

[0033] It should be noted that in existing pipe jacking construction technology, the pipe is first jacked up section by section underground using machinery installed in the pipe jacking shaft with the aid of a jacking device. Finally, the pipe is received in the pipe jacking shaft to complete the pipe laying. The pipe jacking shaft is a structure used during pipe jacking construction, typically divided into a working shaft and a receiving shaft. These serve as the starting and ending underground spaces required for pipe jacking operations, respectively. The pipe jacking shaft can be considered a temporary structure, providing necessary support and working space for the advancement and installation of the pipe. It is usually dismantled or abandoned after the project is completed.

[0034] like Figure 1 As shown, multiple arc-shaped standard components 110 are assembled to form a circular standard section 100, and multiple lifting mechanisms 200 are arranged along the circumference of the standard section 100 on its outer edge. During the pipe jacking construction, several standard sections 100 are connected sequentially along the axial direction to form an upper steel structure retaining wall, which is connected to the upper end of the lower reinforced concrete structure retaining wall cast on site. Since the pipe jacking shaft is constructed using the caisson process, and the pipe jacking shaft is a temporary structure during the construction period, the foundation pit of the pipe jacking shaft needs to be backfilled after the pipe jacking construction is completed. During the backfilling process of the pipe jacking shaft, the upper steel structure retaining wall can be recycled and reused. The layered backfilling of the foundation pit of the pipe jacking shaft and the lifting of the upper steel structure retaining wall are carried out alternately and cyclically. After each small-distance lifting of the upper steel structure retaining wall, the pipe jacking shaft needs to be backfilled in layers immediately. This reduces the input of structural materials, saves project investment, effectively reduces the technical difficulty of construction, speeds up the project progress, and ensures the construction safety of the foundation pit.

[0035] In some specific embodiments of this utility model, the height of the standard section 100 ranges from 0.8m to 1.5m.

[0036] In some specific embodiments of this utility model, the thickness of the standard part 110 ranges from 6 mm to 10 mm.

[0037] In some specific embodiments of this utility model, the standard component 110 is a steel structure.

[0038] In some specific embodiments of this utility model, a single standard section 100 is formed by 5 to 10 standard parts 110.

[0039] It should be noted that, as the steel structure retaining material for pipe jacking wells in water supply and drainage projects, the main considerations are the lateral pressure generated by the surrounding soil during use and the stress caused by installation settlement or lifting deformation. The planar dimensions are primarily determined by the size of the pipe jacking equipment and the specifications of the jacking pipe. Therefore, while ensuring the structural safety of the pipe jacking well, the upper steel structure retaining wall is optimized to a standard section of 100. The vertical height of the steel structure can be determined based on the number of standard sections of 100. Furthermore, one set of standard sections of 100 can be optimized into multiple standard components of 110, achieving optimal economic efficiency and practicality in design and construction.

[0040] like Figure 1 and Figure 2 As shown, the cross-section of standard component 110 is arc-shaped. Five to ten standard components 110 can be combined to form a circular standard section 100. The size of the pipe jacking shaft is selected according to the size of the pipe jacking equipment and the specifications of the jacking pipe. The height of a single standard section 100 can be determined based on the depth of the upper steel structure, generally 0.8m-1.5m, thus further determining the size of the standard section 100. It should be noted that the conventional circular pipe jacking shaft and standard section 100 dimensions are between 4.0m and 10.0m in diameter. Specifically, when the standard section 100 is large, eight to ten standard components 110 can be used to enclose it; when the standard section 100 is small, five to seven standard components 110 can be used to enclose it.

[0041] In some specific embodiments of this utility model, the standard part 110 includes two arc-shaped parts 111 and two connecting parts 112. The two arc-shaped parts 111 and the two connecting parts 112 enclose each other to form an arc-shaped frame. A first support 113 and a plurality of second support parts 114 are provided between the arc-shaped frame. The first support 113 is arranged parallel between the two arc-shaped parts 111, and the plurality of second support parts 114 are all arranged between the first support 113 and the connecting parts. The plurality of second support parts 114 are all perpendicular to the arc-shaped parts 111.

[0042] like Figure 2As shown in this specific embodiment, each standard component 110 is provided with two arc-shaped components 111 and two connecting components 112. The two arc-shaped components 111 and the two connecting components 112 enclose an arc-shaped frame. A first support component 113 is arranged parallel between the two arc-shaped components 111. Seven support components 112 are provided between the first support component 113 and each arc-shaped component 111. The seven support components 112 are all perpendicular to the arc-shaped components 111, so that a grid steel structure is formed between the arc-shaped components 111 and the support components 112, ensuring the structural stability of the standard component 110.

[0043] In some specific embodiments of this utility model, the arc part 111 is provided with multiple flange holes 1111, and two adjacent standard parts 110 are connected by bolts through multiple flange holes 1111.

[0044] like Figure 2 and 5 As shown, multiple flange holes 1111 are provided along the circumferential direction on both the upper and lower end faces of the arc component 111. The multiple flange holes 1111 on the upper and lower end faces correspond to each other. After determining the vertical height of the steel structure, the number of standard sections 100 is obtained according to the specific value. The flange holes 1111 on two adjacent standard sections 100 arranged along the axial direction are connected accordingly. The adjacent standard sections 100 can be firmly connected by bolts and nuts.

[0045] In some specific embodiments of this utility model, the lifting mechanism 200 includes: a first panel 210, which has a first through hole 211; a second panel 220, which has a second through hole 221, and is connected to the first panel 210 via a connecting panel 230. A limiting groove 240 is formed between the first panel 210, the second panel 220, and the connecting panel 230. A standard part 110 can be partially embedded in the limiting groove 240 so that the first panel 210, the second panel 220, and the standard section 100 are bolted together with the flange hole 1111 via corresponding first through holes 211 and second through holes 221; and a driving member 250, which connects the end of the first panel 210 away from the second panel 220 to the ground 10. The driving member 250 is used to drive the first panel 210 to rise and fall.

[0046] like Figure 4 As shown, the first panel 210 and the second panel 220 are horizontally arranged, and the connecting panel 230 is vertically arranged. The first panel 210 and the second panel 220 are respectively located at the upper and lower ends of the connecting panel 230, thereby forming a horizontally opening limiting groove 240. Figure 4 , Figure 5 and Figure 6The standard part 110 shown is partially embedded in the limiting groove 240. Specifically, the support part 112 is located on the outer edge of the arc part 111, and the arc part 111 has a wing plate extending towards the center. The wing plate can be embedded in the limiting groove 240, and multiple flange holes 1111 are formed on the wing plate. It should be noted that the first panel 210 has multiple first through holes 211, and the second panel 220 has multiple second through holes 221. When the wing plate is embedded in the limiting groove 240, the first through holes 211, flange holes 1111, and second through holes 221 are sequentially connected axially. Thus, the first panel 210, the standard part 110, and the second panel 220 can be bolted together through the corresponding first through holes 211, flange holes 1111, and second through holes 221. Figure 3 and Figure 5 As shown, multiple first through holes 211 are located near the inner edge of the first panel 210, and a driving member 250 is provided near the outer edge of the first panel 210. The first panel 210 is connected to the ground 10 through the driving member 250. Under the action of the driving member 250, the standard section 100 can be lifted, thereby realizing the staggered implementation of layered backfilling of the jacking well foundation pit and lifting of the upper steel structure retaining wall, so that the upper steel structure retaining wall can be recycled and reused.

[0047] In some specific embodiments of this utility model, the shape of the limiting groove 240 is consistent with the curvature of the standard part 110 to ensure that the lifting mechanism 200 can match the standard part 110 at any angle.

[0048] It should be noted that the drive component 250 is a jack, which is placed on the ground 10 around the pipe jacking shaft. The foundation must be good and able to withstand a certain pressure load. Alternatively, the curtain piles around the pipe jacking shaft can be used as a foundation to ensure the stability of the jack's operation.

[0049] Furthermore, the number of lifting mechanisms 200 is configured according to the required lifting force. When a larger lifting force is required, the same number of lifting mechanisms 200 as the standard component 110 are used, and they are required to be symmetrically arranged around the jacking shaft formed by connecting multiple standard sections 100. When a smaller lifting force is required, lifting devices are used at intervals according to the number of standard components 110, and they are also required to be symmetrically arranged around the jacking shaft. It should be noted that the number of flange holes 1111 exceeds the number of first through holes 211 on the first panel 210, allowing construction personnel to set up lifting mechanisms 200 at corresponding positions on the standard component 110 as needed, thus improving construction flexibility.

[0050] In this specific embodiment, there are 8 standard parts 110, so a large lifting force is required, and 8 lifting mechanisms 200 are needed. That is, each standard part 110 needs to be equipped with a lifting mechanism 200. At this time, the lifting mechanisms 200 are symmetrically arranged around the jacking shaft. Under the action of the jack, each standard part 110 is subjected to force at the same time and the lifting speed is consistent, thereby ensuring that the standard section 100 can be lifted evenly and slowly.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A lifting structure of a water supply and sewerage engineering steel-concrete combined pipe shaft, characterized in that, The utility model relates to a standard section (100) is surrounded by a plurality of standard parts (110), a plurality of lifting mechanisms (200) are arranged along the circumference of the standard section (100), and the lifting mechanisms (200) are detachably connected with the standard section (100), and the lifting mechanisms (200) are used for lifting the standard section (100). Each standard section (100) is surrounded by 5-10 standard parts (110). The standard part (110) comprises two circular arc parts (111) and two connecting parts (112), an arc-shaped frame is surrounded between the two circular arc parts (111) and the two connecting parts (112), a first supporting part (113) and a plurality of second supporting parts (114) are arranged between the arc-shaped frames, the first supporting part (113) is arranged in parallel between the two circular arc parts (111), the plurality of second supporting parts (114) are arranged between the first supporting part (113) and the connecting part, and the plurality of second supporting parts (114) are perpendicular to the circular arc part (111).

2. The lifting structure of a water supply and drainage engineering steel-concrete combined pipe shaft according to claim 1, characterized in that, The circular arc part (111) is provided with a plurality of flange holes (1111), and adjacent two standard parts (110) are bolted through the plurality of flange holes (1111).

3. The lifting structure of a water supply and drainage engineering steel-concrete combined pipe shaft according to claim 1, characterized in that, The lifting mechanism (200) comprises a first panel (210) provided with a first through hole (211), a second panel (220) provided with a second through hole (221), a connecting panel (230) connecting the first panel (210) and the second panel (220), a driving part (250) connected with the ground (10) at one end of the first panel (210) away from the second panel (220), and the driving part (250) is used for driving the first panel (210) to rise and fall.

4. The lifting structure of a water supply and drainage engineering steel-concrete combined pipe shaft according to claim 3, characterized in that, The shape of the limiting groove (240) is consistent with the arc of the standard part (110).

5. The lifting structure of a water supply and drainage engineering steel-concrete combined pipe shaft according to claim 4, characterized in that, The height of the standard section (100) ranges from 0.8m to 1.5m. The thickness of the standard part (110) ranges from 6mm to 10mm. The standard part (110) is a steel structure. ​ 6. The lifting structure of a water supply and drainage engineering steel-concrete combined pipe shaft according to claim 5, characterized in that, ​ 7. The lifting structure of a water supply and drainage engineering steel-concrete combined pipe shaft according to claim 1, characterized in that, ​ 8. The lifting structure of a water supply and drainage engineering steel-concrete combined pipe shaft according to claim 1, characterized in that, ​ 9. The lifting structure of a water supply and drainage engineering steel-concrete combined pipe shaft according to claim 1, characterized in that, ​

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