Large-rigidity pipe roof structure capable of jacking existing building

Abstract

The utility model discloses a large-rigidity pipe roofing structure capable of jacking an existing building, which belongs to the technical field of foundation treatment engineering and comprises a plurality of connected unit pipe roofs, and each unit pipe roofing is composed of a main grouting pipe, an auxiliary grouting pipe and a flange plate. Two groups of parallel flange plates, namely an upper flange plate and a lower flange plate, are fixedly arranged on the circumferential side wall of the main grouting pipe; auxiliary grouting pipes are arranged on the two sides of the main grouting pipe and between the two sets of flange plates; a side grout outlet is formed in the side, away from the main grouting pipe, of the auxiliary grouting pipe. A slope toe is arranged at the end, away from the main grouting pipe, of the flange plate, and a rubber sleeve is fixedly arranged on the slope toe. The adjacent unit pipe roofs are overlapped through the flange plates, the grouting space is formed between the main grouting pipes, the auxiliary grouting pipes are adopted in the grouting space for grouting, the bearing capacity of the whole structure is improved, and when the device conducts jacking operation, it is guaranteed that damage to an upper-layer building is minimized in the construction process; and the effect of a grout stopping wall can be achieved, the engineering steps are simplified during construction, the cost is saved, and the construction structure is more reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation treatment engineering, and particularly relates to a high-rigidity pipe-roof structure capable of jacking up existing buildings. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] At present, due to a series of problems such as the impact of geological disasters and urban over-development, the urban groundwater level has dropped, or other factors have caused the bearing capacity of the foundation to decrease, resulting in a series of problems such as building tilt, which has brought huge impacts on citizens' lives and production activities.

[0004] In order to reinforce the tilt of existing buildings, patent CN202223571936.9 discloses an ancient tower tilt correction device, including: a working pit is set on the side of the tower body settlement direction; a wedge-shaped body is set in the working pit, which can be pushed by a linear drive mechanism to move into the foundation soil on the settlement side of the tower body; a top wedge opening is set on the side of the working pit close to the tower body for the wedge to pass through; a grouting pipe is pre-buried inside the wedge-shaped body, and the grouting pipe includes a grouting port and a slurry outlet.

[0005] In the above scheme, the ancient tower was lifted by grouting the bottom of the wedge-shaped body; it failed to consider reinforcing the stratum after the jacking and tilt correction construction, which may cause the building to tilt again; it also did not consider reinforcing the stratum during the jacking and tilt correction construction, which may cause the stratum settlement to damage the superstructure during the construction process. Utility Model Content

[0006] In response to the above problems, the present invention provides a high-rigidity pipe curtain structure that can be used to jack up existing buildings, so that adjacent unit pipe curtains are overlapped through flange plates, the main grouting pipes are connected to each other, and grouting spaces are formed between the main grouting pipes; an auxiliary grouting pipe is provided inside the grouting space to grout into the interior, which can increase the bearing capacity of the overall structure, so that when the device is jacking up, the overall structure of the pipe curtain not only has self-bearing capacity, but also has a reinforcement effect on the upper strata, which can ensure that damage to the superstructure during construction is minimized; and it can play the role of a grouting wall, simplifying the engineering steps during construction, saving costs, and making the construction structure more reliable; a grouting port is opened below the auxiliary grouting pipe, and grouting operations can be carried out on the underlying soil through the auxiliary grouting pipe, thereby ensuring the bearing capacity of the underlying soil after the jacking operation and reducing the risk of the structure settling again.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A high-rigidity pipe-roof structure capable of lifting existing buildings comprises a plurality of connected unit pipe-roofs, each unit pipe-roof consisting of a main grouting pipe, an auxiliary grouting pipe, and a flange plate;

[0009] Two sets of parallel flange plates are fixedly arranged on the circumferential side wall of the main grouting pipe, namely the upper flange plate and the lower flange plate; auxiliary grouting pipes are arranged on both sides of the main grouting pipe and between the two sets of flange plates;

[0010] A side slurry outlet is provided on the side of the auxiliary grouting pipe away from the main grouting pipe; a slope foot is provided on the end of the flange plate away from the main grouting pipe, and a rubber sleeve is fixed on the slope foot.

[0011] Preferably, the lower flange plate is arranged on the tangent line of the circumferential side wall of the main grouting pipe, and the upper flange plate divides the circumferential side wall of the main grouting pipe into an upper semicircular side wall and a lower semicircular side wall.

[0012] Preferably, multiple rows of main pulp outlets are evenly arranged on the upper semicircular side wall.

[0013] Preferably, on the same side of the main grouting pipe, the slope toes of the upper flange plate and the lower flange plate are in different directions and are symmetrical in the horizontal direction.

[0014] Preferably, on different sides of the main grouting pipe, the slope toes of the upper flange plates are in different directions and are in a parallel state; similarly, the slope toes of the lower flange plates are also in different directions and are in a parallel state.

[0015] Preferably, the auxiliary grouting pipe is fixedly connected to the main grouting pipe and the lower flange plate.

[0016] Preferably, a lower slurry outlet is further opened on the lower side of the auxiliary grouting pipe, and the lower slurry outlet passes through the lower flange plate.

[0017] Preferably, a partition is provided inside the auxiliary grouting pipe, and the partition separates the side slurry outlet from the lower slurry outlet.

[0018] Preferably, it further comprises a plurality of linear jacking devices, each of which is used to push a unit pipe curtain into the ground.

[0019] Preferably, corresponding supporting grouting equipment is also included, and the grouting equipment includes a grouting pump, a connecting hose, and a slurry storage tank.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are:

[0021] The utility model enables adjacent unit pipe curtains to be overlapped through flange plates, main grouting pipes are connected to each other, and grouting spaces are formed between the main grouting pipes; auxiliary grouting pipes are provided inside the grouting space to inject grouting into the interior, which can increase the bearing capacity of the overall structure, so that when the device is jacking up, the overall structure of the pipe curtain not only has self-bearing capacity, but also has a reinforcement effect on the upper stratum, which can ensure that damage to the superstructure during construction is minimized; and it can play the role of a slurry-stop wall, simplifying the engineering steps during construction, saving costs, and making the construction structure more reliable; a grouting port is opened below the auxiliary grouting pipe, and grouting operations can be carried out on the soil below through the auxiliary grouting pipe, thereby ensuring the bearing capacity of the soil below after the jacking operation and reducing the risk of the structure settling again. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 This is a three-dimensional schematic diagram of the high-rigidity tube-roof structure of Example 1 of the present utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of a unit tube curtain according to Example 1 of the present utility model;

[0025] Figure 3 This is a front elevation view of the unit tube curtain of Example 1 of the present utility model;

[0026] Figure 4 This is a front elevation view of the high-rigidity pipe-roof structure after grouting in Example 1 of the present utility model;

[0027] In the picture:

[0028] 1. Main grouting pipe; 2. Auxiliary grouting pipe; 21. Lower grouting outlet; 22. Side grouting outlet; 3. Flange plate; 4. Main grouting outlet; 5. Rubber sleeve. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0030] The present invention will be described in detail below with reference to the accompanying drawings. This embodiment discloses a high-rigidity pipe-roof structure that can lift existing buildings. Figure 1 As shown, it includes several unit pipe curtains connected together, and the unit pipe curtain is composed of a main grouting pipe 1, an auxiliary grouting pipe 2, and a flange plate 3.

[0031] Specifically, if Figure 2 As shown, in this embodiment, two sets of parallel flange plates 3 are fixedly installed on the circumferential side wall of the main grouting pipe 1; each set has two flange plates 3, one set of lower flange plates 3 is arranged on the tangent line of the circumferential side wall of the main grouting pipe 1, and the other set of upper flange plates 3 divides the circumferential side wall of the main grouting pipe 1 into an upper semicircular side wall and a lower semicircular side wall. It is understood that the fixed connection method can be welding.

[0032] like Figure 1 、 Figure 3 As shown, the flange plate 3 is provided with a toe at the end away from the main grouting pipe 1. It should be noted that on the same side, the toe directions of the upper and lower flange plates are different and symmetrical in the horizontal direction; on different sides, the toe directions of the two upper flange plates are also different and parallel. Similarly, the toe directions of the two lower flange plates are also different and parallel. The reason for this arrangement is to ensure that when the unit pipe curtain is assembled, the upper or lower flange plates of adjacent main grouting pipes 1 can fit tightly when they are docked.

[0033] It can be understood that when two main grouting pipes 1 are adjacent to each other, the upper flange plates and the lower flange plates between the two main grouting pipes 1 are butted against each other, thereby forming a grouting space inside the two main grouting pipes 1 .

[0034] like Figure 1 、 Figure 4 As shown, auxiliary grouting pipes 2 are provided on both sides of the main grouting pipe 1, between the upper and lower sets of parallel flange plates 3. The auxiliary grouting pipes 2 are fixedly connected to the main grouting pipe 1 and the lower flange plate 3. It can be understood that the fixed connection can be achieved by welding.

[0035] like Figure 3 、 Figure 4 As shown, multiple rows of main slurry outlets 4 are evenly arranged on the upper semicircular side wall of the main grouting pipe 1, which are used for grouting and jacking operations on the upper soil; a lower slurry outlet 21 is opened on the lower side of the auxiliary grouting pipe 2, and the lower slurry outlet can be one row or multiple rows, which are set according to actual conditions; the lower slurry outlet passes through the lower flange plate, and the lower slurry outlet can grout the stratum downward to increase the bearing capacity of the lower soil; a side slurry outlet 22 is opened on the side of the auxiliary grouting pipe 2 away from the main grouting pipe 1, and the side slurry outlet can be one row or multiple rows, which are set according to actual conditions; the side slurry outlet 22 can grout into the internal space formed by the flange plate, increase the stiffness of the flange plate, and form a similar slurry stop wall effect.

[0036] like Figure 1As shown, a partition is provided inside the auxiliary grouting pipe 2, which divides the auxiliary grouting pipe 2 into two parts. At the same time, the partition also separates the side slurry outlet 22 from the lower slurry outlet 21. The purpose of this arrangement is that the auxiliary grouting pipe 2 needs to be grouted in steps. When the side slurry outlet 22 needs to discharge slurry, the lower slurry outlet 21 must not discharge slurry.

[0037] like Figure 2 As shown, a rubber sleeve 5 is fixedly installed at the toe of the flange plate. The purpose of the rubber sleeve 5 is to ensure that when the flange plates of two adjacent main grouting pipes 1 are aligned, the flange plates can be more closely attached to each other after being superimposed. It also prevents grouting from leaking when grouting into the grouting space between the two adjacent main grouting pipes 1, thereby ensuring overall rigidity. It is understood that the rubber sleeve 5 can be fixed to the toe of the flange plate by gluing.

[0038] In this embodiment, the main grouting pipe is made of 408 steel pipe; it can be understood that the length of the main grouting pipe, auxiliary grouting pipe and flange plate can be lengthened by welding and assembly according to the actual length required.

[0039] In this embodiment, a high-rigidity pipe-roof structure capable of jacking up existing buildings also includes a corresponding linear jacking device. Multiple linear jacking devices are provided, each of which is used to push a unit pipe-roof into the ground. It is understood that the linear jacking device utilizes existing technology, and may employ an electric telescopic cylinder. The linear jacking device is used to jack the high-rigidity pipe-roof structure capable of jacking up existing buildings into the ground beneath the target building.

[0040] In this embodiment, a high-rigidity pipe-roof structure capable of jacking up existing buildings also includes corresponding supporting grouting equipment, including a conventional grouting pump, connecting hose, and grouting tank. It is understood that before the high-rigidity pipe-roof structure is pushed into the base of the target reinforced building, the main grouting pipe, auxiliary grouting pipe, and both ends of the grouting space are welded and sealed with corresponding steel plates, and grouting ports are reserved at one end of the main grouting pipe and auxiliary grouting pipe. When pushing into the formation, the linear jacking device supports one end of the reserved grouting port.

[0041] Working principle:

[0042] First, investigate the project situation and determine the tilt of the target reinforced building;

[0043] Then, a jacking working trench is excavated on the side of the target reinforced building that needs to be jacked up, and the working trench is supported and reinforced;

[0044] Next, multiple pre-processed unit pipe curtains that meet the required length are placed in place, with the flange plates of adjacent unit pipe curtains pre-overlapped. A linear jacking device is then used to push the unit pipe curtains into the inclined stratum. During this process, the jacking rate of each main grouting pipe must be relatively consistent.

[0045] After the jacking is completed, the first grouting operation is carried out in the auxiliary grouting pipe. At this time, the slurry comes out from the side slurry outlet and fills the grouting space between the adjacent main grouting pipes. The grouting is stopped after the internal space of the grouting space is filled with slurry. After the slurry solidifies, the flange plate and the internal grouting form a slurry-stop wall.

[0046] Next, grouting is injected into the main grouting pipe. While the main grouting outlet reinforces the stratum upward, it can also produce a jacking effect on the target reinforced building. While jacking, the auxiliary grouting pipe starts the second grouting. At this time, slurry is discharged from the lower grouting outlet of the auxiliary grouting pipe, which can reinforce the soil below and enhance the bearing capacity of the stratum.

[0047] In this embodiment, adjacent unit pipe curtains are overlapped by flange plates, which can connect the main grouting pipes to each other and form a grouting space between the main grouting pipes; auxiliary grouting pipes are provided inside the grouting space to inject grout into the interior, which can increase the bearing capacity of the overall structure, so that when the device is lifted, the overall structure of the pipe curtain not only has self-bearing capacity, but also can reinforce the upper strata, which can ensure that the damage to the superstructure during the construction process is minimized; and it can play the role of a slurry-stop wall, simplifying the engineering steps during construction, saving costs, and making the construction structure more reliable.

[0048] In this embodiment, a grouting port is opened below the auxiliary grouting pipe, and grouting operations can be performed on the soil below through the auxiliary grouting pipe. This construction sequence can ensure the bearing capacity of the soil below after the jacking operation and reduce the risk of the structure settling again.

[0049] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A high-rigidity pipe-roof structure capable of lifting existing buildings, characterized in that: It includes several connected unit pipe curtains, each unit pipe curtain consists of a main grouting pipe, an auxiliary grouting pipe, and a flange plate; Two sets of parallel flange plates are fixedly arranged on the circumferential side wall of the main grouting pipe, namely the upper flange plate and the lower flange plate; auxiliary grouting pipes are arranged on both sides of the main grouting pipe and between the two sets of flange plates; A side grouting port is provided on the side of the auxiliary grouting pipe away from the main grouting pipe; A slope foot is provided at one end of the flange plate away from the main grouting pipe, and a rubber sleeve is fixed on the slope foot.

2. The high-rigidity pipe-roof structure capable of jacking up existing buildings as claimed in claim 1, characterized in that: The lower flange plate is arranged on the tangent line of the circumferential side wall of the main grouting pipe, and the upper flange plate divides the circumferential side wall of the main grouting pipe into an upper semicircular side wall and a lower semicircular side wall.

3. The high-rigidity pipe-roof structure capable of jacking up existing buildings as claimed in claim 2, characterized in that: Multiple rows of main pulp outlets are evenly arranged on the upper semicircular side wall.

4. The high-rigidity pipe-roof structure capable of lifting an existing building as claimed in claim 1, characterized in that: On the same side of the main grouting pipe, the slope toes of the upper flange plate and the lower flange plate are in different directions and are symmetrical in the horizontal direction.

5. The high-rigidity pipe-roof structure capable of lifting an existing building as claimed in claim 1, characterized in that: On different sides of the main grouting pipe, the slope toes of the upper flange plates are in different directions and are in a parallel state; similarly, the slope toes of the lower flange plates are also in different directions and are in a parallel state.

6. The high-rigidity pipe-roof structure capable of lifting an existing building as claimed in claim 1, characterized in that: The auxiliary grouting pipe is fixedly connected to the main grouting pipe and the lower flange plate.

7. The high-rigidity pipe-roof structure capable of lifting an existing building as claimed in claim 1, characterized in that: A lower slurry outlet is also provided on the lower side of the auxiliary grouting pipe.

8. The high-rigidity pipe-roof structure capable of lifting an existing building as claimed in claim 7, characterized in that: A partition is provided inside the auxiliary grouting pipe, which separates the side grouting outlet from the lower grouting outlet.

9. The high-rigidity pipe-roof structure capable of lifting an existing building as claimed in claim 1, characterized in that: It also includes multiple linear jacking devices, each of which is used to push a unit pipe curtain into the ground.

10. The high-rigidity pipe-roof structure capable of jacking up an existing building as claimed in claim 1, characterized in that: It also includes corresponding supporting grouting equipment, which includes a grouting pump, connecting hose, and slurry storage tank.

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