Building pile foundation underpinning structure

Abstract

The utility model relates to the technical field of building foundation pile underpinning, and particularly discloses a building pile foundation underpinning structure which comprises a pile replacing assembly, the pile replacing assembly comprises a reinforcing pile, at least two sets of symmetrically-arranged inserting holes are formed in the outer wall of the reinforcing pile, and mounting holes are formed in the middle of a frame around the top of the reinforcing pile. A supporting pressure piece is arranged on the inner side of the mounting hole; the old pile comprises a body, the body is arranged on the inner side of the reinforcing pile, a pile rod is mounted at the top of the body, and a bearing plate is arranged at a rod body of the pile rod; through the combination of the arranged pile replacing assembly and the arranged supporting pressure piece, bottom supporting and pile replacing can be carried out on an original old pile on the basis of the original old pile, and in the bottom supporting and pile replacing process, the position of the bearing plate can be better supported through the combination of the supporting pressure piece and the jack, so that the use requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of building foundation pile underpinning, in particular to a building pile foundation underpinning structure. Background Art

[0002] Pile underpinning refers to the replacement of the original designed pile foundation system with another pile foundation system during the construction of a building. This usually occurs in the following situations:

[0003] Changes in geological conditions: During the construction process, it is discovered that the original design is not suitable for the new geological conditions and needs to be adjusted or replaced.

[0004] Design Adjustment: Changes in the design or loading requirements of a building require the pile foundation design to be adjusted accordingly.

[0005] Construction problems: Problems occurred in the original design of the pile foundation construction, such as difficulty in pile driving or substandard construction quality.

[0006] When the above problems occur, through careful investigation, the pile foundation can be replaced on the original pile body according to different situations, or pile foundation can be added outside the original pile body. No matter which one is used, the building needs to be supported on the original foundation, especially when the pile foundation is replaced, more stable support is needed;

[0007] Most traditional support methods support the load-bearing area above it through a jack, which is generally set at the diagonal position. When supporting at this time, there are no good auxiliary support parts at the edge of the load-bearing area, which can easily cause the top load-bearing area to sink. Based on this, it is necessary to improve it. Utility Model Content

[0008] In view of the shortcomings of the prior art, the utility model provides a pile foundation replacement structure for a building, which solves the problem that the traditional support method in the prior art is mostly to support the load-bearing area above it by jacks, and there are no good auxiliary support parts at the edges of the load-bearing area, which easily causes settlement of the top load-bearing area.

[0009] The utility model provides a building pile foundation underpinning structure, comprising a pile replacement assembly, wherein the pile replacement assembly comprises a reinforcement pile, wherein the outer wall of the reinforcement pile is provided with at least two groups of symmetrically arranged plug-in holes, and the top of the reinforcement pile is provided with a mounting hole in the middle of the frame around it, and a supporting pressure piece is provided inside the mounting hole;

[0010] An old pile, wherein the old pile comprises a main body, the main body is arranged on the inner side of the reinforced pile, a pile rod is installed on the top of the main body, and a load-bearing plate is arranged at the rod body of the pile rod;

[0011] The main body is provided with a docking hole corresponding to the plugging hole of the reinforcement pile, and reinforcement ribs are provided at the docking hole and the plugging hole for reinforcing and extending the old pile.

[0012] As a further improvement of the utility model, one or more holes are drilled downward from the top of the body of the old pile in a circular array with the pile rod, and vertical reinforcing ribs are installed at the drill holes and are integrated with the old pile by pouring concrete.

[0013] As a further improvement of the utility model, the supporting pressure member comprises a supporting rod, and two clamps for maintaining a spacing are arranged on the rod body of the supporting rod.

[0014] As a further improvement of the utility model, one or more connecting ears are arranged on the outer side of the clamp, and the connecting ears are distributed in a ring array with the rod body of the support rod as the central axis.

[0015] As a further improvement of the utility model, the outer side of the connecting ear is rotatably connected to an auxiliary support plate via a pin shaft, and an auxiliary support strip is provided on the inner side of the auxiliary support plate, and one end of the auxiliary support strip is movably connected to the bottom of the connecting ear.

[0016] As a further improvement of the utility model, the other end of the auxiliary support bar is provided with an adjusting piece and a folding piece, and one end of the adjusting piece is movably connected to the other connecting ear.

[0017] As a further improvement of the utility model, one end of the folding member is slidably connected to the inner side of the auxiliary support bar to support the auxiliary support plate.

[0018] As a further improvement of the present invention, the top of the support rod is in contact with the top of the load-bearing plate, so as to support the top of the load-bearing plate.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] The utility model can replace the pile with a base on the original old pile by combining the provided pile replacement assembly with the provided supporting pressure piece, and in the process of replacing the pile with a base, the combination of the supporting pressure piece and the jack can better support the position of the load-bearing plate to meet the needs of use;

[0021] When the pile replacement assembly is combined with the old pile, a combination of docking holes and plug-in holes can be used in conjunction with the drilled holes opened on the top of the old pile to drive a new pile foundation and replace the pile foundation. In addition, an additional pile foundation can be added to the original pile foundation by using a combination of drilled holes, docking holes and plug-in holes to enhance the bearing capacity of the structure. This can be selected based on different survey conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the combination of the pile replacement assembly and the old pile of the utility model;

[0024] Figure 2 This is a schematic diagram of the formal structure of the pile replacement assembly, the old pile and the supporting pressure member combination of the utility model;

[0025] Figure 3 This is a schematic diagram of the top view of the structure of the combination of the pile replacement assembly and the old pile of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the pile replacement assembly and the old pile combined in a bottom view according to the utility model;

[0027] Figure 5 For this utility model Figure 3 Schematic diagram of the AA section structure;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the supporting pressure member of the utility model;

[0029] Figure 7 This is a schematic diagram of the front view structure of the supporting pressure member of the utility model;

[0030] Figure 8 This is a schematic diagram of the top view of the supporting pressure member of the utility model;

[0031] Fig. 9 It is a schematic diagram of the top view of the structure of the pile replacement assembly, the old pile and the supporting pressure piece combination of the utility model.

[0032] In the figure: 1. Pile replacement assembly; 2. Old pile; 3. Support pressure member;

[0033] 11. Reinforcement pile; 12. Plug hole; 13. Installation hole;

[0034] 21. Pile rod; 22. Load-bearing plate; 23. Drill hole; 24. Docking hole; 25. Body;

[0035] 31. Support rod; 32. Adjustment piece; 33. Auxiliary support plate; 34. Connecting ear; 35. Folding piece; 36. Clamp; 37. Auxiliary support strip. DETAILED DESCRIPTION

[0036] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0037] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0038] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 Pile foundation underpinning refers to replacing the original designed pile foundation system with another pile foundation system during the construction of a building. The traditional support method is mostly to support the load-bearing area above it through a jack, which is generally set at the diagonal position. At this time, when supporting, there is no good auxiliary support at the edge of the load-bearing area, which is easy to cause the top load-bearing area to sink. Based on this, the present application provides a building pile foundation underpinning structure, including:

[0039] The pile-changing assembly 1 comprises a reinforcement pile 11, the outer wall of the reinforcement pile 11 is provided with at least two groups of symmetrically arranged plug-in holes 12, a mounting hole 13 is provided in the middle of the frame around the top of the reinforcement pile 11, and a supporting pressure member 3 is provided inside the mounting hole 13;

[0040] The old pile 2 includes a main body 25, which is arranged on the inner side of the reinforcement pile 11, and a pile rod 21 is installed on the top of the main body 25, and a bearing plate 22 is arranged at the rod body of the pile rod 21;

[0041] The main body 25 is provided with a docking hole 24 corresponding to the insertion hole 12 of the reinforcement pile 11 , and reinforcement ribs are provided at the docking hole 24 and the insertion hole 12 for reinforcing and extending the old pile 2 .

[0042] At least two groups of symmetrically distributed plug holes 12 are provided on the outer wall of the reinforcement pile 11. The design of the plug holes 12 allows the reinforcement pile 11 to be effectively connected and docked with the old pile 2. Mounting holes 13 are provided in the middle of the frame around the top of the reinforcement pile 11. The inner sides of these mounting holes 13 are equipped with support pressure members 3 to provide additional support force to ensure stability during construction.

[0043] The main body 25 of the old pile 2 is arranged inside the reinforced pile 11. Such a design can be replaced and reinforced on the basis of the original pile foundation. A pile rod 21 is installed on the top of the main body 25 of the old pile 2, and a load-bearing plate 22 is installed at the rod body of the pile rod 21. The load-bearing plate 22 is used to bear and disperse the load of the building to ensure the stability of the building structure.

[0044] The body 25 of the old pile 2 is provided with a docking hole 24 at a position corresponding to the insertion hole 12 of the reinforced pile 11. A reinforcing rib is provided between the docking hole 24 and the insertion hole 12 to reinforce and extend the old pile 2 to improve the bearing capacity of the overall structure.

[0045] Installation process:

[0046] Step 1: First, clean the soil and debris around the old pile 2 to ensure that the new reinforcement pile 11 can be installed smoothly.

[0047] Step 2: Position and place the reinforcement pile 11 on the foundation of the old pile 2, ensuring that the insertion hole 12 of the reinforcement pile 11 is aligned with the docking hole 24 of the old pile 2.

[0048] Step 3: Install the supporting pressure member 3 in the installation hole 13 of the reinforcement pile 11, and apply pressure to the supporting pressure member 3 using a jack or other equipment to stabilize the load-bearing area and prevent settlement during the underpinning process.

[0049] Step 4: By combining the docking hole 24 and the plug-in hole 12 , the old pile 2 and the reinforced pile 11 are connected by reinforcing bars to ensure that the old pile 2 is effectively reinforced and extended.

[0050] Step 5: Install the load-bearing plate 22 on the pile rod 21, and ensure that the position of the load-bearing plate 22 can disperse the load of the building and provide sufficient supporting force.

[0051] First, ensure that the insertion hole 12 is accurately docked with the docking hole 24 to ensure that the connection between the reinforcement pile 11 and the old pile 2 is stable.

[0052] At the same time, the support pressure members 3 need to be arranged evenly to avoid the situation of insufficient local support.

[0053] Furthermore, the reinforcement bars must be installed firmly to ensure that the reinforcement effect of the old pile 2 reaches the expected level.

[0054] Through the effective connection of the reinforcement pile 11 and the old pile 2, and the setting of the bearing plate 22, the bearing capacity of the building can be significantly enhanced to meet the new design requirements or load requirements. The use of the support pressure piece 3 can provide stable support during the underpinning process, prevent settlement or other structural problems during the construction process, and ensure construction safety. The design of the docking hole 24 and the plug hole 12 allows the new and old pile 2 foundation systems to be flexibly combined and adjusted. It can be adjusted and optimized according to the actual geological conditions and structural requirements to adapt to different construction environments. The setting of the reinforcement bar helps to further stabilize the old pile 2, prevent structural instability caused by soil settlement or other factors, and ensure the long-term safety of the building.

[0055] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The top of the body 25 of the old pile 2 is provided with one or more holes 23 in a circular array with the pile rod 21 downward, and vertical reinforcing ribs are installed at the holes 23, and are integrated with the old pile 2 by pouring concrete.

[0056] One or more boreholes 23 are provided in a circular array on the top of the old pile 2 body 25. The layout of the boreholes 23 is designed as a circular array to ensure that the boreholes 23 are evenly distributed on the pile body so as to effectively connect with the newly installed reinforcement pile 11 system.

[0057] The depth and diameter of the borehole 23 should be determined according to the actual conditions and design requirements of the old pile 2. Generally speaking, the depth of the borehole 23 should be sufficient so that the vertical reinforcing bar can be fully embedded and effectively combined with the concrete casting material.

[0058] A vertical reinforcing bar is installed in each borehole 23. The reinforcing bar is usually a steel bar or other high-strength material, and its purpose is to improve the overall strength and stability of the old pile 2.

[0059] Ensure that the reinforcing bar is positioned vertically and stably in the drilled hole 23 to ensure that it can be effectively combined with the concrete casting material.

[0060] After the reinforcement is installed, concrete pouring is performed to fill the drilled hole 23 with concrete. The selection of concrete should take into account its strength, adhesion and durability to ensure good integration with the old pile 2 body 25 and the reinforcement.

[0061] After the concrete is poured, it needs an appropriate amount of time to solidify to ensure that it reaches the designed strength and guarantees the stability and bearing capacity of the pile foundation.

[0062] The pouring of concrete and the installation of reinforcement should ensure effective integration with the old pile 2 body 25 to form an integral structure. This can significantly enhance the bearing capacity and stability of the old pile 2.

[0063] The drilling holes 23 and the provision of the reinforcement ribs can significantly improve the strength and stability of the old pile 2 body 25. The combination of the reinforcement ribs and the concrete improves the overall bearing capacity of the pile body and can better support the load of the building.

[0064] The concrete pouring makes the reinforcement ribs closely combined with the old pile 2, thus enhancing the stability of the structure. This measure can effectively prevent the old pile 2 from being deformed or unstable due to overloading.

[0065] The combination of the drilled holes 23 and the concrete enables the effective integration of the old pile 2 and the reinforced pile 11 system to form a solid overall structure. This combination improves the reliability of the overall structure and avoids construction problems caused by loose connections.

[0066] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 as well as Fig. 9 The supporting pressure member 3 comprises a supporting rod 31 , and two spacing-maintaining clamps 36 are arranged on the rod body of the supporting rod 31 .

[0067] One or more connecting ears 34 are arranged on the outer side of the clamp 36 , and the connecting ears 34 are distributed in a ring array around the central axis of the rod body of the support rod 31 .

[0068] The outer side of the connecting ear 34 is rotatably connected to the auxiliary support plate 33 via a pin shaft, and the inner side of the auxiliary support plate 33 is provided with an auxiliary support bar 37 , and one end of the auxiliary support bar 37 is movably connected to the bottom of the connecting ear 34 .

[0069] The support rod 31 is the main component of the support pressure piece 3, and two spacing-maintaining clamps 36 are arranged at the rod body. The design purpose of these clamps 36 is to provide a stable support point for the support rod 31 and ensure the stability and effectiveness of the support pressure piece 3 during the underpinning process.

[0070] The clamps 36 are located at different positions of the support rod 31, maintaining a certain spacing, so as to stabilize the support rod 31 during the support process. The design of the clamps 36 can be fixed or adjustable to meet different construction requirements.

[0071] One or more connecting ears 34 are arranged on the outside of the clamp 36, and these connecting ears 34 are distributed in a circular array with the central axis of the support rod 31 as the center. This design can provide uniform support and ensure that the distribution of the supporting force is more stable and uniform.

[0072] The outer side of the connecting ear 34 is rotatably connected to the auxiliary support plate 33 via a pin. The auxiliary support plate 33 is designed to provide an additional support area to ensure better load distribution during the underpinning process.

[0073] An auxiliary support bar 37 is provided on the inner side of the auxiliary support plate 33. One end of the auxiliary support bar 37 is movably connected to the bottom of the connecting ear 34. This arrangement allows the auxiliary support bar 37 to flexibly adjust its position during the underpinning process to adapt to different support requirements.

[0074] Install the clamp 36 on the support rod 31 to ensure that it maintains the appropriate spacing. Install the connecting ear 34 to the outside of the clamp 36, and connect the auxiliary support plate 33 to the connecting ear 34 through the pin. Adjust the position of the auxiliary support bar 37 as needed so that it can effectively provide additional support.

[0075] The design of the annular array of connecting ears 34 and the arrangement of the auxiliary support plate 33 enable the support pressure member 3 to provide more uniform and stable support during the support process, which helps to reduce the structural instability problem caused by uneven support.

[0076] The movable connection of the auxiliary support bar 37 allows it to be adjusted according to specific support requirements, so that the support system can adapt to different construction environments and load conditions, thereby improving the flexibility and adaptability of the support system.

[0077] The combination of the support rod 31, the clamp 36 and the connecting ear 34 can effectively distribute the load to the support plate and the support bar, avoiding settlement or other problems caused by excessive local load.

[0078] The other end of the auxiliary support bar 37 is provided with an adjusting member 32 and a folding member 35 , and one end of the adjusting member 32 is movably connected to another connecting ear 34 .

[0079] One end of the folding member 35 is slidably connected to the inner side of the auxiliary support bar 37 to support the auxiliary support plate 33 .

[0080] The top of the support rod 31 contacts the top of the load-bearing plate 22 to support the top of the load-bearing plate 22 .

[0081] The other end of the auxiliary support bar 37 is equipped with an adjustment member 32, one end of which is movably connected to another connecting ear 34. The function of the adjustment member 32 is to allow the auxiliary support bar 37 to be adjusted in length or angle according to actual needs during the support process, so that the support system can adapt to different support requirements and environmental conditions.

[0082] A folding piece 35 is provided on the inner side of the auxiliary support bar 37, and one end of the folding piece 35 is slidably connected to the inner side of the auxiliary support bar 37. The function of the folding piece 35 is to support the auxiliary support plate 33 so that it can maintain a stable position during the support process. At the same time, the folding piece 35 can be adjusted as needed to adapt to different support positions and angles.

[0083] The top of the support rod 31 contacts the top of the load-bearing plate 22, and supports the top of the load-bearing plate 22. This design ensures that the load-bearing plate 22 can be fully supported during the underpinning process, and prevents settlement or structural deformation caused by insufficient support.

[0084] Install the support pressure piece 3:

[0085] Step 1: Position the support rod 31 to a predetermined position and fix two clamps 36 at an appropriate distance. The connecting ears 34 on the clamps 36 should be distributed in a ring shape with the central axis of the support rod 31 as the center.

[0086] Step 2: Install the auxiliary support plate 33 on the connecting ear 34, and connect the auxiliary support plate 33 to the connecting ear 34 through a pin shaft. Make sure that the auxiliary support plate 33 can provide additional support during the underpinning process.

[0087] Step 3: Install the adjusting member 32 at the other end of the auxiliary support bar 37 and flexibly connect it to another connecting ear 34. Adjust the position of the adjusting member 32 to ensure that the auxiliary support bar 37 can provide appropriate support during the underpinning process.

[0088] Folding 35 settings:

[0089] Step 4: Install the folding piece 35 to the inner side of the auxiliary support bar 37 so that it can be slidably connected. Adjust the position of the folding piece 35 to ensure that the auxiliary support plate 33 is stably supported during the replacement process and can be adjusted in angle as needed.

[0090] Support bearing plate 22:

[0091] Step 5: Butt the top of the support rod 31 with the top of the load-bearing plate 22 to ensure that the support rod 31 can effectively support the load-bearing plate 22 to disperse the load of the building and maintain the structural stability during the construction process.

[0092] The arrangement of the adjusting member 32 and the folding member 35 allows the auxiliary support bar 37 to be flexibly adjusted according to actual needs, thereby providing more stable support, which can prevent the load-bearing plate 22 from sinking or deforming due to insufficient support, and ensure the structural stability during the underpinning process.

[0093] The design of the adjusting member 32 allows the length and angle of the support strip to be adjusted to suit different construction requirements and support conditions. The sliding connection of the folding member 35 allows the support plate to remain stable and can be adjusted in angle as required, thereby increasing the flexibility of the support system.

[0094] The contact design between the support rod 31 and the load-bearing plate 22 ensures that the load-bearing plate 22 is fully supported during the underpinning process, so that the load can be evenly distributed, reducing structural problems caused by excessive local loads.

[0095] The stability and flexibility of the support system improves the safety of the construction process. Effective support can prevent unexpected situations such as settlement or deformation during construction, thereby protecting the safety of construction workers and buildings.

[0096] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A building pile foundation underpinning structure, characterized in that: include: A pile replacement assembly (1), the pile replacement assembly (1) comprising a reinforcement pile (11), the outer wall of the reinforcement pile (11) being provided with at least two groups of symmetrically arranged plug-in holes (12), a mounting hole (13) being provided in the middle of the frame around the top of the reinforcement pile (11), and a supporting pressure member (3) being provided inside the mounting hole (13); An old pile (2), the old pile (2) comprising a body (25), the body (25) being arranged on the inner side of the reinforcement pile (11), and a pile rod (21) being installed on the top of the body (25), and a load-bearing plate (22) being arranged at the rod body of the pile rod (21); The main body (25) is provided with a docking hole (24) corresponding to the insertion hole (12) of the reinforcement pile (11), and reinforcement ribs are provided at the docking hole (24) and the insertion hole (12) for reinforcing and extending the old pile (2).

2. A building pile foundation underpinning structure according to claim 1, characterized in that: One or more holes (23) are formed in a circular array downwardly from the top of the body (25) of the old pile (2) with the pile rod (21), and vertical reinforcing ribs are installed at the holes (23) and are fused with the old pile (2) by pouring concrete.

3. The building pile foundation underpinning structure according to claim 1, characterized in that: The supporting pressure member (3) comprises a supporting rod (31), and two spacing-maintaining clamps (36) are arranged on the rod body of the supporting rod (31).

4. A building pile foundation underpinning structure according to claim 3, characterized in that: One or more connecting ears (34) are arranged on the outer side of the clamp (36), and the connecting ears (34) are distributed in a ring array with the rod body of the support rod (31) as the central axis.

5. A building pile foundation underpinning structure according to claim 4, characterized in that: The outer side of the connecting ear (34) is rotatably connected to an auxiliary support plate (33) via a pin shaft, and the inner side of the auxiliary support plate (33) is provided with an auxiliary support bar (37), and one end of the auxiliary support bar (37) is movably connected to the bottom of the connecting ear (34).

6. A building pile foundation underpinning structure according to claim 5, characterized in that: The other end of the auxiliary support bar (37) is provided with an adjusting piece (32) and a folding piece (35), and one end of the adjusting piece (32) is movably connected to the other connecting ear (34).

7. A building pile foundation underpinning structure according to claim 6, characterized in that: One end of the folding member (35) is slidably connected to the inner side of the auxiliary support strip (37) and is used to support the auxiliary support plate (33).

8. The building pile foundation underpinning structure according to claim 3, characterized in that: The top of the support rod (31) contacts the top of the load-bearing plate (22) and is used to support the top of the load-bearing plate (22).

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