Device for constructing pipe shed on fender posts

Abstract

The utility model belongs to the technical field of fender posts, and particularly relates to a device for constructing a pipe shed on fender posts. Comprising fender posts, pipe sheds, arc-shaped steel plates, inter-pile steel plates, stiffening plates, connecting sleeves, open cut well side wall inner pipe shed short pipes and water stop steel rings. Pipe shed driving holes are reserved in the arc-shaped steel plates according to pipe shed positioning, the inter-pile steel plates are positioned according to the fender posts and welded to the arc-shaped steel plates, the stiffening plates are arranged between the inter-pile steel plates, after a whole is formed, reinforcing steel bars of the fender posts are chiseled out, and the arc-shaped steel plates and the reinforcing steel bars of the fender posts are welded and connected firmly. And after the foundation pit is excavated to the pipe shed construction operation elevation, the pipe shed penetrates through the reserved pipe shed hole of the arc-shaped steel plate to be arranged. According to the device and the construction method, the pipe shed can be built when the open excavation working well enclosure foundation pit is excavated, it is avoided that a construction operation platform is built again when the pipe shed is constructed in the later period, the construction period is shortened, the construction cost is reduced, meanwhile, the end of the pipe shed is poured into the side wall of the open excavation air shaft, the fulcrum of the end is firm, and the safety of subsequent underground excavation construction is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of retaining piles, and in particular relates to a device for constructing a pipe shed on a retaining pile. Background Art

[0002] A tunnel is an underground tunnel structure used in construction. It is usually used in subways or municipal street entrances and exits to provide a safe passage for pedestrians.

[0003] In the traditional construction method of pipe sheds for underground tunnels, advance support measures such as pipe sheds are often set up at the top of the primary support. A common practice is to set up an open-cut working pit at one end of the underground tunnel and reserve a pipe shed construction casing on the side wall of the working pit. After the enclosure structure of the open-cut working pit is completed and the internal structure (such as the board wall) is completed, the pipe shed for the underground tunnel is set up through the reserved casing. However, this method has some problems: (1) After the construction of the open-cut working pit structure is completed, it is necessary to re-erect scaffolding and construction machinery platforms to reach the pipe shed installation location. This increases the construction risk, as well as the construction period and cost. (2) The pre-buried pipe shed construction casing needs to be sealed at a later stage, but the sealing effect may not be good and there is a risk of water leakage. This may cause the equipment in the underground tunnel to be soaked in water, affecting the normal use of the underground tunnel. Utility Model Content

[0004] In view of the above problems, the utility model provides a device and a construction method for constructing a pipe shed on retaining piles during a foundation pit excavation stage, so as to complete the pipe shed construction during the retaining stage and further solve the problems caused by constructing the pipe shed after the internal structure construction is completed.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A device for constructing a pipe shed for a concealed channel during the foundation pit excavation stage, comprising retaining piles, a pipe shed, a curved steel plate, a steel plate between piles, a stiffening plate, a connecting sleeve, a short pipe of the pipe shed in the side wall of an open-cut well, and a water-stop steel ring; the curved steel plate can be welded into a whole by using an integral steel plate or a block of steel plates, a hole for the pipe shed is reserved on the curved steel plate according to the positioning of the pipe shed, the steel plate between piles is positioned according to the retaining piles and welded to the curved steel plate, a stiffening plate is arranged between the steel plates between piles, after forming the whole, the steel bars of the retaining piles are chiseled out, and the curved steel plate is welded to the steel bars of the retaining piles to firmly connect.

[0007] Furthermore, after the foundation pit is excavated to the pipe shed construction operation elevation, the pipe shed is set up through the reserved pipe shed holes in the arc-shaped steel plate.

[0008] Furthermore, after the installation is completed, the end of the pipe shed is connected to the connecting sleeve through a thread. The length of the pipe shed connecting sleeve is the same as the thickness of the surface layer between the piles, about 100-150mm. The diameter of the connecting sleeve is larger than the reserved hole of the pipe shed, so that the connecting sleeve can firmly pull the arc steel plate through the pipe shed. The pile surface layer is surrounded, the support is set up, the foundation pit is excavated to the bottom of the pit, and the internal structure of the open-cut working pit is back-built.

[0009] Furthermore, when the pipe shed is built back below the elevation of the pipe shed, the short pipe of the pipe shed in the side wall of the open-cut well is connected to the existing pipe shed through a connecting sleeve. A water-stopping steel ring is arranged around the short pipe of the pipe shed in the side wall of the open-cut well as a water-stopping measure, and the whole is cast in the side wall of the open-cut working well.

[0010] Continue to construct the open excavation working well. After the open excavation working well is completed, proceed with underground excavation construction.

[0011] Correspondingly, the utility model also provides a construction method for constructing a dark excavation pipe shed on the retaining piles during the foundation pit excavation stage, comprising the following steps:

[0012] 1): According to the positioning of the retaining piles and the pipe shed, the arc steel plate and the steel plate between the piles are made, and the holes for the pipe shed to pass through are reserved on the arc steel plate, and the arc steel plate, the steel plate between the piles and the stiffening plate are connected into a whole;

[0013] 2): Excavate the foundation pit to the construction operation elevation of the pipe shed, chisel out the reinforcement of the retaining piles, weld the arc steel plate to the reinforcement of the retaining piles, drill the pipe shed through the reserved hole of the arc steel plate, and connect the end of the pipe shed with the connecting sleeve;

[0014] 3): Excavation and backbuilding of foundation pit. When backbuilding to the position below the pipe shed connection sleeve, connect the short pipe of the pipe shed inside the side wall of the open-cut well. Set a water-stop steel ring on the short pipe of the pipe shed inside the side wall of the open-cut well. Cast the short pipe of the pipe shed inside the side wall of the open-cut working well as a whole into the side wall of the open-cut working well.

[0015] 4): After the internal structure of the open-cut working pit is completed, dark excavation construction will be carried out.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) During the open excavation pit enclosure stage, the pipe shed can be built when the foundation pit is excavated, saving construction time and cost;

[0018] (2) When constructing a pipe shed, the curved steel plate can also serve as a guide device for the pipe shed to improve construction accuracy.

[0019] (3) The arc-shaped steel plates, steel plates between piles, stiffening plates, large pipe sheds, and pipe shed connecting sleeves form a whole, which reinforces the weakening of the retaining piles caused by the construction of the pipe shed, ensuring the safety of the foundation pit retaining structure when the pipe shed is installed.

[0020] (4) After the pipe shed is erected and before the internal structure is constructed, the side walls of the foundation pit are leveled so as not to affect the erection of supporting purlins or the construction of waterproof structures.

[0021] (5) The short pipe of the pipe rack is connected to the pipe rack through a connecting sleeve and cast in the side wall of the open-cut well, ensuring the effect of the support point at the end of the pipe rack and the safety of subsequent dark excavation construction.

[0022] (6) After the internal structure of the open-cut working pit is completed, there are no pipe shed construction holes on the inner wall of the side wall, and the waterproof effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an elevation view of a concealed excavation pipe shed device constructed on a retaining pile according to the utility model.

[0024] Figure 2 The utility model is a plan view of a concealed excavation pipe shed device constructed on a retaining pile.

[0025] Figure 3 The utility model is an AA section view of a concealed excavation pipe shed device constructed on a retaining pile.

[0026] The numbers in the figure are: 1. Guarding piles; 2. Pipe shed; 3. Arc-shaped steel plate; 4. Steel plate between piles; 5. Stiffening plate; 6. Connecting sleeve; 7. Short pipe of the pipe shed inside the side wall of the open-cut well; 8. Water-stop steel ring; 9. Surface layer between piles; 10. Side wall of the open-cut working well; 11. Reinforcement of the guarding piles. DETAILED DESCRIPTION

[0027] The following describes the specific implementation of the utility model in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the utility model. Although the utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the utility model.

[0028] See also Figure 1-Figure 3 A device for constructing a concealed excavation pipe shed on retaining piles during the foundation pit excavation stage, comprising retaining piles 1, pipe sheds 2, arc-shaped steel plates 3, steel plates between piles 4, stiffening plates 5, connecting sleeves 6, short pipes of the pipe shed inside the side wall of the open-cut well 7, water-stop steel rings 8, surface layers between piles 9, side walls of the open-cut working well 10, and retaining pile reinforcements 11.

[0029] The arc-shaped steel plate 3 can be welded into a whole by using an integral steel plate or a block of steel plates, and the thickness of the steel plate is not less than 20 mm. According to the positioning of the pipe shed 2, a hole for punching the pipe shed is reserved at the corresponding position of the pipe shed 2. The thickness of the inter-pile steel plate 4 is not less than 20 mm, and two pieces are vertically arranged above and below the pipe shed. Two stiffening plates 5 are arranged between the inter-pile steel plates, and the position of the stiffening plates can be fine-tuned according to the positioning of the pipe shed to avoid the setting position of the pipe shed 2. The size of the inter-pile steel plate 4 needs to be just embedded between the two piles, and it is welded on the arc-shaped steel plate 3 according to the positioning between the piles to form a whole.

[0030] The open-cut working pit is excavated to the construction operation elevation of the pipe shed, the steel bars 11 of the retaining piles 1 are chiseled out, and the integral steel structure formed by the arc steel plate 3, the steel plate between the piles 4, and the stiffening plate 5 is welded to the steel bars 11, and the welding is ensured to be firm.

[0031] The pipe shed 2 is drilled through the pipe shed drilling hole reserved above the arc-shaped steel plate. A thread is set at one end of the pipe shed 2 and connected to the connecting sleeve 6. The length of the connecting sleeve 6 is the same as the thickness of the surface layer 9 between the piles. The diameter of the connecting sleeve 6 is larger than the pipe shed drilling hole, so that the connecting sleeve 6 can firmly pull the arc-shaped steel plate 3 through the pipe shed.

[0032] After the construction of the pipe shed 2 is completed, the surface layer 9 between the piles is constructed, the support is set up, the open-cut well foundation pit is excavated to the bottom, and backbuilding begins. When the side wall 10 of the open-cut working well is backbuilt to 500mm below the position of the pipe shed connection sleeve, the pipe shed connection sleeve 6 is chiseled out and connected to the short pipe 7 of the pipe shed inside the side wall of the open-cut well. The model and size of the short pipe shed inside the side wall of the open-cut well are the same as those of the pipe shed 2, and its length is not less than half of the wall thickness of the side wall 10 of the open-cut well, and is not less than 300mm. A water-stop steel ring 8 is set in the middle of the short pipe shed 7 inside the side wall of the open-cut well to stop water at the short pipe position. The short pipe shed 7 inside the side wall of the open-cut well is cast together with the side wall 10 of the open-cut well.

[0033] After the internal structure of the open-cut working pit is completed, the dark-cut structure is constructed in the hole.

[0034] A construction method for constructing a dark excavation pipe shed on a retaining pile during a foundation pit excavation stage, comprising the following steps:

[0035] (1) While constructing the retaining piles, according to the positioning of the retaining piles 1 and the pipe shed 2, the arc-shaped steel plate 3, the steel plate between the piles 4, and the stiffening plate 5 are manufactured, and a hole for the pipe shed to pass through is reserved on the arc-shaped steel plate 3, and the arc-shaped steel plate 3, the steel plate between the piles 4, and the stiffening plate 5 are connected into a whole;

[0036] (2) Excavation of foundation pit to the construction operation elevation of pipe shed 2, and installation of pipe shed 2. During installation, the pipe shed passes through the reserved hole of the arc-shaped steel plate;

[0037] (3) A connecting sleeve 6 is provided at the end of the pipe shed, a retaining pile surface layer 9 is constructed, supports are erected, the foundation pit is further excavated to the bottom of the pit, and the internal structure of the open-cut well is constructed;

[0038] (3) When the pipe rack connection sleeve 6 is back-built below the position, the short pipe rack 7 inside the side wall of the open-cut well is connected, a water-stop steel ring 8 is provided on the short pipe rack inside the side wall of the open-cut well, and the short pipe rack inside the side wall of the open-cut well is integrally cast inside the side wall of the open-cut working well 10;

[0039] (4) Continue to construct the open excavation working well. After the open excavation working well is completed, proceed to the underground excavation construction.

[0040] The utility model can be used to build a pipe shed during the open excavation pit enclosure stage and foundation pit excavation. The pipe shed ensures the safety of the enclosure structure while the subsequent foundation pit enclosure structure and internal structure construction are not affected. At the same time, it has a good waterproof effect and a dark excavation pipe shed support effect. The utility model is particularly applicable to projects with limited dark excavation period, which is economical, safe and saves construction period.

[0041] It should be noted that the fully described utility model may also have a variety of modified and improved implementation schemes, and is not limited to the specific embodiments of the above-mentioned implementation schemes. The above-mentioned embodiments are only used as an illustration of the utility model, rather than a limitation of the utility model. In short, the protection scope of the utility model should include those obvious changes or substitutions and modifications to those of ordinary skill in the art.

Claims

1. A device for constructing a pipe shed on a retaining pile, characterized in that: The invention comprises a retaining pile (1), a pipe shed (2), an arc-shaped steel plate (3), a steel plate between piles (4), a stiffening plate (5), a connecting sleeve (6), a short pipe shed tube (7) in the side wall of an open-cut well, and a water-stop steel ring (8); the arc-shaped steel plate (3) is welded into a whole by using an integral steel plate or a block of steel plates; a hole for the pipe shed is reserved on the arc-shaped steel plate (3) according to the positioning of the pipe shed; the steel plate between piles (4) is positioned according to the retaining piles and welded to the arc-shaped steel plate (3); a stiffening plate (5) is arranged between the steel plates between piles (4) to form a whole; the arc-shaped steel plate (3) and the steel bars of the retaining pile are firmly welded; the pipe shed is connected to the short pipe shed tube (7) in the side wall of the open-cut well by a connecting sleeve (6), and a water-stop steel ring is arranged on the short pipe shed tube; the short pipe shed tube is integrally cast in the side wall (10) of the open-cut working well.

2. The device for constructing a pipe shed on a retaining pile according to claim 1, characterized in that: The thickness of the arc-shaped steel plate (3) is not less than 20 mm, and a hole is reserved for the pipe shed above the arc-shaped steel plate (3). The inter-pile steel plate is positioned according to the retaining piles and welded to the arc-shaped steel plate (3). A stiffening plate is arranged between the inter-pile steel plates, and after forming a whole, it is welded to the longitudinal reinforcement of the chiseled retaining piles. The welding needs to ensure that the welding is firm.

3. The device for constructing a pipe shed on a retaining pile according to claim 1, characterized in that: After the pipe shed is completed, the end of the pipe shed is connected to the connecting sleeve, the length of the connecting sleeve is the same as the thickness of the retaining pile surface layer, and the diameter of the connecting sleeve is larger than the hole for the pipe shed. In the backbuilding stage, the connecting sleeve is further connected to the short pipe (7) of the pipe shed in the side wall of the open-cut well.

4. The device for constructing a pipe shed on a retaining pile according to claim 1, characterized in that: The short pipe (7) in the pipe rack of the open-cut well side wall has a length of not less than 1 / 2 of the thickness of the open-cut well side wall and not less than 300 mm. One end of the short pipe is threaded and connected to the connecting sleeve, and the other end is embedded in the open-cut well side wall (10). A water-stop steel ring (8) is arranged in the middle.

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