Anti-disturbance composite pile foundation reinforcing node adjacent to existing building
By installing composite pile foundations at the bottom of new buildings, adding sliding bearing plates to the outside of existing buildings, and using wireless axial force sensors to monitor stress changes, the problem of new construction disturbing existing buildings was solved, and structural safety and anti-lateral displacement capabilities were improved.
Patent Information
- Application Number
- CN202422444369.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-10
AI Technical Summary
During the construction of renovation and expansion projects, the settlement of new buildings and construction loads will disturb existing buildings, affecting their normal use and even causing structural damage.
A composite pile foundation is set at the bottom of the foundation of the new building, and a sliding bearing plate is added to the outside of the foundation of the existing building. A wireless axial force sensor is used to monitor the stress changes between the two. The composite pile foundation improves the anti-lateral displacement ability and reduces the disturbance to the existing building.
Effectively reduce the disturbance of new building construction to existing buildings, ensure structural safety during construction, and enhance the foundation's ability to resist lateral displacement of new buildings.
Smart Images
Figure CN223317217U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of construction engineering, and particularly relates to an anti-disturbance composite pile foundation reinforcement node adjacent to an existing building. Background Art
[0002] With the rapid development of my country's economy, a large number of existing old buildings are in need of renovation and expansion due to their inability to meet the needs of modern living environments. However, during renovation and expansion projects, existing buildings are generally still in normal use. The settlement and construction loads of the new construction will disturb the existing buildings, affecting their normal use and even causing structural damage. Utility Model Content
[0003] In order to solve the above problems, the utility model provides an anti-disturbance composite pile foundation reinforcement node adjacent to an existing building, so as to solve the problem of disturbance to the existing building structure during the construction of a new building.
[0004] To achieve the above-mentioned purpose, the present invention provides an anti-disturbance composite pile foundation reinforcement node adjacent to an existing building, comprising:
[0005] There are existing foundations and new foundations, a sliding support plate is fixedly connected to one side of the existing foundation, multiple wireless axial force sensors are fixedly connected between the sliding support plate and the new foundation, the multiple wireless axial force sensors are evenly arranged along the horizontal direction of the new foundation, and multiple composite pile foundations are set at the bottom of the new foundation, and the multiple composite pile foundations are fixedly connected to the new foundation.
[0006] According to a specific embodiment of the present invention, the existing foundation and the sliding support plate are bonded and fixed by structural adhesive.
[0007] According to a specific embodiment of the present invention, the first surface of the sliding support plate is a rough plane, and the first surface of the sliding support plate is pasted and fixed to the existing foundation. The second surface of the sliding support plate is a smooth plane, and the second surface of the sliding support plate is pasted and fixed to the wireless axial force sensor.
[0008] According to a specific embodiment of the present invention, the composite pile foundation includes pile foundation concrete, wherein a central axis steel pipe and multiple auxiliary steel pipes are arranged inside the pile foundation concrete, and multiple force transmission supports are fixedly connected between the multiple auxiliary steel pipes and the central axis steel pipe.
[0009] According to a specific embodiment of the present invention, the central axis steel pipe is located in the center of the composite pile foundation, and the plurality of auxiliary steel pipes are evenly arranged around the central axis steel pipe.
[0010] According to a specific embodiment of the present invention, the force transmission support is triangular, a plurality of force transmission supports are arranged along the vertical direction of the central axis steel pipe, and the plurality of force transmission supports are connected with the auxiliary steel pipe to form a truss structure.
[0011] According to a specific embodiment of the present invention, a connecting end plate is provided on the top of the composite pile foundation, and the connecting end plate is welded and fixed to the top of the central axis steel pipe and the auxiliary steel pipe.
[0012] According to a specific embodiment of the present invention, a plurality of holes are provided on the connecting end plate, and the sizes of the holes are respectively adapted to the sizes of the central axis steel pipe and the auxiliary steel pipe.
[0013] According to a specific embodiment of the present invention, anchoring steel bars are passed through the holes, and the anchoring steel bars are fixedly connected to the central axis steel pipe and the auxiliary steel pipes by grouting.
[0014] According to a specific embodiment of the present invention, the composite pile foundations are distributed in an array at the bottom of the newly built foundation, and the composite pile foundations are fixedly connected to the newly built foundation by anchoring steel bars.
[0015] Compared to existing technologies, this utility model provides an anti-disturbance composite pile foundation reinforcement node adjacent to an existing building. By installing a composite pile foundation at the base of the new building, the foundation's ability to resist lateral displacement is improved. Furthermore, a sliding bearing plate is added to the outside of the existing building's foundation, and a wireless axial force sensor is installed between the new and old foundations to monitor stress changes between them. This ensures the structural safety of the new building during construction and minimizes disturbances to the existing structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is an axonometric drawing of a composite pile foundation provided according to one embodiment of the present utility model.
[0017] Figure 2 It is a cross-sectional view of a composite pile foundation reinforcement node provided according to one embodiment of the utility model.
[0018] Figure 3 It is a cross-sectional view of a composite pile foundation provided according to one embodiment of the utility model.
[0019] Figure 4 It is an axonometric view of a composite pile foundation reinforcement node provided according to one embodiment of the utility model.
[0020] Reference numerals:
[0021] 1-Existing foundation; 2-New foundation; 3-Sliding bearing plate; 4-Composite pile foundation; 5-Wireless axial force sensor;
[0022] 41-pile foundation concrete; 42-central axis steel pipe; 43-auxiliary steel pipe; 44-load transmission support; 45-connecting end plate; 46-anchor steel bar. DETAILED DESCRIPTION
[0023] In order to enable those skilled in the art to more clearly understand the concept and concept of the present invention, the present invention is described in detail below in conjunction with specific embodiments. It should be understood that the embodiments provided herein are only a portion of all possible embodiments of the present invention. After reading the specification of this application, those skilled in the art are capable of making improvements, modifications, or replacements to part or all of the following embodiments, and such improvements, modifications, or replacements are also included in the scope of protection claimed in the present invention.
[0024] In this document, the terms "first", "second" and other similar words are not intended to imply any order, quantity and importance, but are merely used to distinguish different elements. In this document, the terms "one", "an" and other similar words are not intended to indicate that there is only one thing, but rather that the relevant description is only for one of the things, and the thing may have one or more. In this document, the terms "comprise", "include" and other similar words are intended to indicate logical relationships, and cannot be regarded as indicating relationships in spatial structure. For example, "A includes B" is intended to indicate that B logically belongs to A, and does not mean that B is spatially located inside A. In addition, the meanings of the terms "comprise", "include" and other similar words should be regarded as open, not closed. For example, "A includes B" is intended to indicate that B belongs to A, but B does not necessarily constitute the whole of A, and A may also include other elements such as C, D, and E.
[0025] In this document, the terms "embodiment," "this embodiment," "one embodiment," and "an embodiment" do not indicate that the description applies only to a specific embodiment, but rather indicate that the description may also apply to one or more other embodiments. Those skilled in the art should understand that any description of a particular embodiment herein may be substituted, combined, or otherwise combined with the description of one or more other embodiments. New embodiments resulting from such substitution, combination, or other combination are readily conceivable by those skilled in the art and fall within the scope of protection of this utility model.
[0026] Example 1
[0027] Additional aspects and advantages of the embodiments of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be understood through practice of the embodiments of the present invention. Figure 1-Figure 4 The embodiment of the present invention provides an anti-disturbance composite pile foundation reinforcement node adjacent to an existing building, comprising:
[0028] There are an existing foundation 1 and a newly built foundation 2, and a sliding support plate 3 is fixedly connected to one side of the existing foundation 1. A plurality of wireless axial force sensors 5 are fixedly connected between the sliding support plate 3 and the newly built foundation 2. The plurality of wireless axial force sensors 5 are evenly arranged along the horizontal direction of the newly built foundation 2. By arranging the wireless axial force sensor 5 between the sliding support plate 3 and the newly built foundation 2, the lateral stress transmitted from the newly built foundation 2 can be received. The wireless axial force sensor 5 is evenly arranged along the length direction of the newly built foundation 2 to ensure the comprehensive collection of monitoring data. The wireless axial force sensor 5 can feed back the monitoring data to the remote data terminal. The construction personnel can grasp the disturbance caused to the existing foundation 1 during the construction of the upper building of the newly built foundation 2 according to the stress change. A plurality of composite pile foundations 4 are arranged at the bottom of the newly built foundation 2, and the plurality of composite pile foundations 4 are fixedly connected to the newly built foundation 2.
[0029] This application improves the lateral displacement resistance of the new foundation 2 by installing a composite pile foundation 4 at the bottom of the new foundation 2. At the same time, a sliding support plate 3 is added to the outside of the existing foundation 1, and a wireless axial force sensor 5 is installed between the new foundation 2 and the existing foundation 1 to monitor the stress changes between the two, ensuring the structural safety of the new foundation 2 during construction and reducing the disturbance of the new foundation 2 to the existing foundation 1.
[0030] Specifically, the existing foundation 1 and the sliding support plate 3 are bonded and fixed by structural adhesive. The first surface of the sliding support plate 3 is a rough plane, and the first surface of the sliding support plate 3 is bonded and fixed to the existing foundation 1. The second surface of the sliding support plate 3 is a smooth plane, and the second surface of the sliding support plate 3 is bonded and fixed to the wireless axial force sensor 5. The outer side of the existing foundation 1 is bonded to the sliding support plate 3 by structural adhesive after polishing. The sliding support plate 3 has a certain strength to ensure that it will not be broken by the lateral force transmitted from the wireless axial force sensor 5. The side of the sliding support plate 3 that is in contact with the existing foundation 1 is rough, and can form a good connection with the existing foundation 1. The side close to the wireless axial force sensor 5 is smooth to prevent the upward and downward displacement friction caused by the uneven settlement of the foundations on both sides from damaging the wireless axial force sensor 5.
[0031] Specifically, the composite pile foundation 4 includes pile foundation concrete 41, and a central axis steel pipe 42 and multiple auxiliary steel pipes 43 are arranged inside the pile foundation concrete 41. Multiple force transmission supports 44 are fixedly connected between the multiple auxiliary steel pipes 43 and the central axis steel pipe 42. The composite pile foundation 4 is used to bear the load transmitted from the newly built foundation 2 and its upper part.
[0032] Specifically, the central steel pipe 42 is located in the center of the composite pile foundation 4, and multiple auxiliary steel pipes 43 are evenly arranged around the central steel pipe 42. The auxiliary steel pipes 43 are arranged in a circle around the central steel pipe 42 with a certain radius and angle to ensure uniform load transmission.
[0033] Specifically, the force-transmitting supports 44 are triangular in shape, arranged vertically along the central steel tube 42. These supports 44 are connected to the auxiliary steel tubes 43 to form a truss structure. This structure not only shares the horizontal loads generated during construction of the upper portion of the new foundation 2, but also improves the overall torsional rigidity of the composite pile foundation 4, thereby further enhancing the horizontal support performance of the composite pile foundation 4.
[0034] Specifically, a connecting end plate 45 is provided at the top of the composite pile foundation 4, which is welded to the top of the central axis steel pipe 42 and the auxiliary steel pipe 43. The connecting end plate 45 is welded to the top of the central axis steel pipe 42 and the auxiliary steel pipe 43 to connect them into a whole, which can evenly transfer the vertical load on the upper part of the newly built foundation 2 to the composite pile foundation 4.
[0035] Preferably, the upper and lower surfaces of the connecting end plate 45 should be frosted to better combine with the newly built foundation 2 and the pile foundation concrete 41.
[0036] Specifically, the connecting end plate 45 is provided with a plurality of holes, each sized to match the dimensions of the central steel tube 42 and the auxiliary steel tubes 43. Anchor bars 46 are inserted through the holes and fixedly connected to the central steel tube 42 and the auxiliary steel tubes 43 through grouting. The connecting end plate 45 is provided with holes sized to facilitate connection of the anchor bars 46 to the remaining components. The anchor bars 46 are inserted through the holes in the connecting end plate 45 and then fixedly connected to the central steel tube 42 and the auxiliary steel tubes 43 through grouting.
[0037] Preferably, the anchoring steel bars 46 extend out of the portion connected to the end plate 45 and spread out at a certain angle to ensure full integration with the newly built foundation 1 .
[0038] Preferably, the strength and specifications of the pile foundation concrete 41 , the central axis steel pipe 42 , the auxiliary steel pipe 43 and the anchoring steel bar 46 are selected after verification based on mechanical calculations.
[0039] Specifically, the composite pile foundations 4 are distributed in an array at the bottom of the newly built foundation 2 to improve the ability of the newly built foundation 2 to resist lateral stress. The composite pile foundations 4 are fixedly connected to the newly built foundation 2 through anchoring steel bars 46.
[0040] In summary, this utility model provides an anti-disturbance composite pile foundation reinforcement node adjacent to an existing building. By installing a composite pile foundation at the base of the new building, the foundation's ability to resist lateral displacement is enhanced. Furthermore, a sliding bearing plate is added to the outside of the existing building's foundation, and a wireless axial force sensor is installed between the new and old foundations to monitor stress changes between them. This ensures the structural safety of the new building during construction and minimizes disturbances to the existing structure.
[0041] The concepts, principles, and concepts of the present invention have been described in detail above in conjunction with specific implementation methods (including embodiments and examples). Those skilled in the art should understand that the present invention may be implemented in more than the forms described above. After reading this application document, those skilled in the art may make any possible improvements, substitutions, and equivalent forms to the steps, methods, systems, and components in the above-described implementation methods. Such improvements, substitutions, and equivalent forms should be deemed to fall within the scope of the present invention. The scope of protection of the present invention shall be determined solely by the claims.
Claims
1. A disturbance-resistant composite pile foundation reinforcement node adjacent to an existing building, characterized in that: It includes an existing foundation and a new foundation. A sliding support plate is fixedly connected to one side of the existing foundation. A plurality of wireless axial force sensors are fixedly connected between the sliding support plate and the new foundation. The plurality of wireless axial force sensors are evenly arranged along the horizontal direction of the new foundation. A plurality of composite pile foundations are provided at the bottom of the new foundation. The plurality of composite pile foundations are fixedly connected to the new foundation.
2. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 1, characterized in that: The existing foundation and the sliding support plate are bonded and fixed by structural adhesive.
3. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 1, characterized in that: The first surface of the sliding support plate is a rough plane, and the first surface of the sliding support plate is pasted and fixed to the existing foundation. The second surface of the sliding support plate is a smooth plane, and the second surface of the sliding support plate is pasted and fixed to the wireless axial force sensor.
4. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 1, characterized in that: The composite pile foundation includes pile foundation concrete, wherein a central axis steel pipe and a plurality of auxiliary steel pipes are arranged inside the pile foundation concrete, and a plurality of force transmission supports are fixedly connected between the plurality of auxiliary steel pipes and the central axis steel pipe.
5. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 4, characterized in that: The central axis steel pipe is located at the exact center of the composite pile foundation, and a plurality of auxiliary steel pipes are evenly arranged around the central axis steel pipe.
6. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 4, characterized in that: The force transmission supports are triangular in shape, and a plurality of the force transmission supports are arranged along the vertical direction of the central axis steel pipe. The plurality of the force transmission supports are connected with the auxiliary steel pipe to form a truss structure.
7. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 4, characterized in that: A connecting end plate is provided on the top of the composite pile foundation, and the connecting end plate is welded and fixed to the top of the central axis steel pipe and the auxiliary steel pipe.
8. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 7, characterized in that: The connecting end plate is provided with a plurality of holes, and the sizes of the holes are respectively adapted to the sizes of the central axis steel pipe and the auxiliary steel pipe.
9. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 8, characterized in that: Anchor steel bars are passed through the holes, and the anchor steel bars are fixedly connected to the central axis steel pipe and the auxiliary steel pipe by grouting.
10. The anti-disturbance composite pile foundation reinforcement node adjacent to an existing building according to claim 9, characterized in that: The composite pile foundations are distributed in an array at the bottom of the newly built foundation, and the composite pile foundations are fixedly connected to the newly built foundation via the anchoring steel bars.