Bridge reinforcement foundation

Abstract

The application relates to a bridge reinforcing foundation and belongs to the technical field of bridge foundation maintenance, which comprises an existing pile foundation and an existing bearing platform connected at the top of the existing pile foundation; a new bridge foundation, which comprises a new bearing platform located at the bottom of the existing bearing platform and integrated with the existing bearing platform and the existing pile foundation, and the new bearing platform is provided with new bearing platform steel bars; and a new connecting device, which comprises a steel bar connecting plate located in the new bearing platform and sleeved on the existing pile foundation, and the steel bar connecting plate is fixedly provided with connecting steel bars connected with the new bearing platform steel bars. The steel bar connecting plate of the new connecting device is sleeved around the existing pile foundation, the new bearing platform steel bars are connected with the steel bar connecting plate through the connecting steel bars, and holes need not be drilled in the existing pile foundation for planting steel bars, so that the existing pile foundation is not damaged at all. The new connecting device can effectively solve the problem that the new bearing platform steel bars pass through the existing pile foundation, and the stress continuity and the overall safety of the new bearing platform steel bars are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge foundation maintenance, in particular to a bridge reinforcing foundation. BACKGROUND

[0002] The bridge foundation occupies an extremely important position in the overall bridge structure, which bears all the loads from the upper structure and transmits them to the foundation. With the rapid development of transportation industry, on the one hand, the bearing capacity of the existing bridge cannot meet the current traffic requirements due to the influence of the design, materials, construction and other aspects at that time; on the other hand, the bridge foundation inevitably suffers erosion due to water erosion, resulting in diseases such as concrete peeling and steel corrosion, which seriously restricts the development of transportation industry and at the same time poses a great safety hazard, so that the bridge foundation reinforcement is very urgent.

[0003] The bridge foundation reinforcement by adding pile foundation and pile cap can fundamentally solve the problem of insufficient bearing capacity of the existing bridge foundation. Due to the influence of the existing pile foundation, the longitudinal and transverse steel bars of the new pile cap cannot be continuously arranged at the existing pile foundation, which affects the continuity of the stress of the steel bars of the new pile cap and the overall safety of the new structure. SUMMARY

[0004] The embodiment of the present application provides a bridge reinforcing foundation to solve the problem that the longitudinal and transverse steel bars of the new pile cap cannot be continuously arranged at the existing pile foundation in the related art, which affects the continuity of the stress of the steel bars of the new pile cap and the overall safety of the new structure.

[0005] The embodiment of the present application provides a bridge reinforcing foundation, which comprises:

[0006] The existing bridge foundation comprises an existing pile foundation and an existing pile cap connected at the top of the existing pile foundation;

[0007] The new bridge foundation comprises a new pile cap located at the bottom of the existing pile cap and integrated with the existing pile cap and the existing pile foundation, and the new pile cap is provided with new pile cap steel bars;

[0008] The new connecting device comprises a steel bar connecting plate located in the new pile cap and sleeved on the existing pile foundation, and the steel bar connecting plate is fixedly provided with connecting steel bars connected with the new pile cap steel bars.

[0009] In some embodiments: a through-pile hole penetrating the existing pile foundation is formed in the middle of the steel bar connecting plate, and a plurality of through-concrete holes for pouring the new pile cap are formed around the steel bar connecting plate.

[0010] In some embodiments: the steel bar connecting plate comprises two symmetrically arranged steel plates, and the two steel plates are fixedly connected by a lap plate.

[0011] In some embodiments: the steel plate and the lap plate are both provided with connecting holes, the lap plate is located at the top and bottom of the two steel plates, and the two steel plates are fixedly connected with the lap plate through bolts.

[0012] In some embodiments: the through concrete hole is an elongated hole, and the through concrete holes are arranged along the length direction and the width direction of the steel bar connecting plate.

[0013] In some embodiments: the steel bar connecting plate is a rectangular structure, and the connecting steel bars are transversely and longitudinally welded at the top and / or bottom of the steel bar connecting plate.

[0014] In some embodiments: the bottom of the steel bar connecting plate is provided with a concrete cushion block for supporting the steel bar connecting plate, and the concrete cushion block is higher than the bottom elevation of the new pile cap.

[0015] In some embodiments: the new bridge foundation further comprises a new pile foundation, and the new pile foundation is located at the bottom of the new pile cap and is integrated with the new pile cap.

[0016] In some embodiments: the top of the new pile cap is provided with a boss surrounding the existing pile cap, and the boss is filled with an epoxy grouting layer between the boss and the existing pile cap.

[0017] In some embodiments: the existing pile foundation is provided with a plurality of existing pile foundations, and the steel bar connecting plate is sleeved on each of the existing pile foundations, and the connecting steel bars are connected between the two adjacent steel bar connecting plates.

[0018] The technical scheme provided by the application has the beneficial effects of:

[0019] The bridge reinforcing foundation provided by the embodiments of the application has the existing bridge foundation, which comprises the existing pile foundation and the existing pile cap connected at the top of the existing pile foundation; the new bridge foundation comprises the new pile cap located at the bottom of the existing pile cap and integrated with the existing pile cap and the existing pile foundation, and the new pile cap is provided with the new pile cap steel bars; and the new connecting device comprises the steel bar connecting plate sleeved on the existing pile foundation and located in the new pile cap, and the steel bar connecting plate is fixedly provided with the connecting steel bars connected with the new pile cap steel bars.

[0020] Therefore, the bridge reinforcing foundation of the application sets a new connecting device between the existing bridge foundation and the new bridge foundation, the reinforcing steel connecting plate of the new connecting device is sleeved around the existing pile foundation, the reinforcing steel of the new bearing platform is connected with the reinforcing steel connecting plate through the connecting reinforcing steel, and no hole drilling and reinforcing steel planting are needed on the existing pile foundation, and no damage is caused to the existing pile foundation. The new connecting device can effectively solve the problem that the reinforcing steel of the new bearing platform passes through the existing pile foundation, and ensure the stress continuity and overall safety of the reinforcing steel of the new bearing platform. The new connecting device can be processed and manufactured in a factory, assembled and fixed on site, has a light structure, is easy to install, and is fast to construct. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 It is a structural schematic diagram of the embodiment of the application.

[0023] Figure 2 It is a structural top view of the new connecting device of the embodiment of the application.

[0024] Figure 3 It is a structural schematic diagram of the new connecting device and the existing pile foundation of the embodiment of the application.

[0025] Reference signs:

[0026] 1, existing pile foundation; 2, reinforcing steel connecting plate; 3, lap plate; 4, connecting reinforcing steel; 5, bolt; 6, new bearing platform reinforcing steel; 7, new bearing platform; 8, existing bearing platform; 9, new pile foundation; 10, concrete cushion block; 21, through concrete hole; 22, through pile hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the application more clear, the following will combine the drawings in the embodiments of the application to clearly and completely describe the technical solutions in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the application.

[0028] The embodiment of the application provides a bridge reinforcing foundation, which can solve the problem that the longitudinal and transverse reinforcing steel of the new bearing platform cannot be continuously arranged at the existing pile foundation in the related art, it is difficult to ensure the stress continuity of the reinforcing steel of the new bearing platform, and the overall safety of the new structure is affected.

[0029] Referring to Figures 1 to 3 As shown in the drawings, the embodiment of the present application provides a bridge reinforcement foundation, which comprises:

[0030] The existing bridge foundation comprises an existing pile foundation 1 and an existing pile cap 8 connected to the top of the existing pile foundation 1, and a pier column is arranged on the top of the existing pile cap 8.

[0031] The new bridge foundation comprises a new pile cap 7 arranged at the bottom of the existing pile cap 8 and integrated with the existing pile cap 8 and the existing pile foundation 1, and a new pile cap steel bar 6 is arranged in the new pile cap 7.

[0032] The new connecting device comprises a steel bar connecting plate 2 arranged in the new pile cap 7 and sleeved on the existing pile foundation 1, and a connecting steel bar 4 connected with the new pile cap steel bar 6 is fixedly arranged on the steel bar connecting plate 2.

[0033] The bridge reinforcement foundation of the embodiment of the present application sets the new connecting device between the existing bridge foundation and the new bridge foundation, the new connecting device is sleeved around the existing pile foundation 1, and the new pile cap steel bar 6 is connected with the existing pile foundation 1 through the new connecting device. The steel bar connecting plate 2 of the new connecting device is sleeved on the existing pile foundation 1, and the new pile cap steel bar 6 is welded with the connecting steel bar 4 on the steel bar connecting plate 2.

[0034] The new connecting device does not need to drill holes and plant steel bars on the existing pile foundation 1, and does not cause any damage to the existing pile foundation 1. The new connecting device can effectively solve the problem of the new pile cap steel bar 6 passing through the existing pile foundation 1, and ensure the stress continuity and overall safety of the new pile cap steel bar 6. The new connecting device can be processed and manufactured in a factory, and is assembled and fixed on site, which is light in structure, easy to install and fast in construction.

[0035] In some optional embodiments, referring to Figure 2 As shown in the drawings, the embodiment of the present application provides a bridge reinforcement foundation, which comprises:

[0036] In order to facilitate the sleeving of the steel bar connecting plate 2 on the existing pile foundation 1, the steel bar connecting plate 2 of the embodiment comprises two steel plates arranged symmetrically, and the two steel plates are fixedly connected into an integral whole through a lap plate 3. The steel plate and the lap plate 3 are both provided with connecting holes, the lap plate 3 is arranged at the top and the bottom of the two steel plates, and the two steel plates and the lap plate 3 are fixedly connected through bolts 5.

[0037] The two steel plates are not limited to be fixedly connected through the lap plate 3, and those skilled in the art can also select to connect the two steel plates into an integral whole through welding or the like.

[0038] Multiple concrete passage holes 21 for pouring the new foundation 7 are provided around the reinforcing steel connecting plate 2. The concrete passage holes 21 are preferably elongated holes, and are spaced apart along the length and width directions of the reinforcing steel connecting plate 2. The concrete passage holes 21 facilitate the flow of concrete into the new foundation 7 during pouring, preventing voids from appearing at the bottom of the reinforcing steel connecting plate 2 and ensuring the quality of the concrete pouring for the new foundation 7.

[0039] In some alternative embodiments: see Figure 2 and Figure 3 As shown in the embodiment of this application, a bridge reinforcement foundation is provided. The steel reinforcement connecting plate 2 of the bridge reinforcement foundation has a rectangular structure, and the connecting steel bars 4 are welded horizontally and longitudinally to the top and bottom of the steel reinforcement connecting plate 2. When the horizontal connecting steel bars 4 are welded to the top of the steel reinforcement connecting plate 2, the longitudinal connecting steel bars 4 are welded to the bottom of the steel reinforcement connecting plate 2.

[0040] The existing pile foundation 1 has multiple piles, and each pile foundation 1 is fitted with a reinforcing steel connecting plate 2. Adjacent reinforcing steel connecting plates 2 are connected by connecting steel bars 4. The newly added pile cap reinforcing steel 6 is connected to the reinforcing steel connecting plate 2 by connecting steel bars 4, so as to achieve the purpose of connecting the newly added pile cap reinforcing steel 6 with the existing pile foundation 1, ensuring the construction quality of the newly added pile cap reinforcing steel 6 and the integrity of the structural system.

[0041] A concrete pad 10 is provided at the bottom of the reinforcing bar connecting plate 2 to support the reinforcing bar connecting plate 2. The concrete pad 10 is higher than the bottom surface elevation of the newly added foundation 7. The concrete pad 10 is used to support the reinforcing bar connecting plate 2 to a set height. When pouring the concrete for the newly added foundation 7, the reinforcing bar connecting plate 2 is poured into the newly added foundation 7.

[0042] In some alternative embodiments: see Figure 1 and Figure 3 As shown in the embodiment of this application, a bridge reinforcement foundation is provided. The newly added bridge foundation of the bridge reinforcement foundation also includes a newly added pile foundation 9, which is located at the bottom of the newly added pile cap 7 and is integrated with the newly added pile cap 7.

[0043] The top of the new foundation 7 is provided with a boss surrounding the existing foundation 8. An epoxy resin grouting layer is filled between the boss and the existing foundation 8. The epoxy resin grouting layer is used to fill the gap between the new foundation 7 and the existing foundation 8.

[0044] Working principle

[0045] The bridge reinforcing foundation provided by the embodiment of the application is provided with an existing bridge foundation, which comprises an existing pile foundation and an existing pile cap 8 connected to the top of the existing pile foundation 1; a new bridge foundation, which comprises a new pile cap 7 located at the bottom of the existing pile cap and integrated with the existing pile cap 8 and the existing pile foundation 1, and the new pile cap 7 is provided with new pile cap reinforcement 6; and a new connecting device, which comprises a reinforcement connecting plate 2 located in the new pile cap 7 and sleeved on the existing pile foundation 1, and the reinforcement connecting plate 2 is fixedly provided with connecting reinforcement 4 connected with the new pile cap reinforcement 6.

[0046] Therefore, the bridge reinforcing foundation provided by the application is provided with a new connecting device between the existing bridge foundation and the new bridge foundation, the reinforcement connecting plate 2 of the new connecting device is sleeved around the existing pile foundation 1, the new pile cap reinforcement 6 is connected with the reinforcement connecting plate 2 through the connecting reinforcement 4, and it is not necessary to drill holes and plant reinforcement on the existing pile foundation 1, and the existing pile foundation 1 is not damaged in any way. The new connecting device can effectively solve the problem that the new pile cap reinforcement 6 passes through the existing pile foundation 1, and ensure the stress continuity and overall safety of the new pile cap reinforcement 6. The new connecting device can be processed and manufactured in a factory, assembled and fixed on site, has a light structure, is easy to install, and is fast to construct.

[0047] In the description of the application, it should be noted that the positions or position relationships indicated by the terms “upper”, “lower” and the like are based on the positions or position relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the application. Unless otherwise specified and limited, the terms “mounting”, “connection”, “connection” should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the application can be understood according to the specific circumstances.

[0048] It should be noted that, in the present application, the relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0049] The foregoing is merely illustrative of the principles of the application and various modifications can be made by those skilled in the art without departing from the spirit and scope of the application. The above embodiments are illustrative, and not restrictive, of the scope of the application.

Claims

1. A bridge reinforcement foundation, characterized in that, include: The existing bridge foundation includes an existing pile foundation (1) and an existing cap (8) connected to the top of the existing pile foundation (1). The new bridge foundation includes a new foundation (7) located at the bottom of the existing foundation (8) and integrated with the existing foundation (8) and the existing pile foundation (1), and the new foundation (7) is provided with new foundation reinforcement (6). The newly added connecting device includes a steel bar connecting plate (2) located inside the newly added foundation (7) and sleeved on the existing pile foundation (1), and a connecting steel bar (4) connected to the steel bar (6) of the newly added foundation is fixedly provided on the steel bar connecting plate (2). The steel reinforcement connecting plate (2) has a pile hole (22) in the middle for passing through the existing pile foundation (1), and multiple concrete holes (21) for pouring the new pile cap (7) are opened around the steel reinforcement connecting plate (2). The steel reinforcement connecting plate (2) includes two steel plates arranged symmetrically, and the two steel plates are fixedly connected by an overlap plate (3); The bottom of the steel bar connecting plate (2) is provided with a concrete pad (10) to support the steel bar connecting plate (2), and the concrete pad (10) is higher than the bottom elevation of the newly added foundation (7). Both the steel plate and the overlapping plate (3) are provided with connection holes. The overlapping plate (3) is located at the top and bottom of the two steel plates. The two steel plates and the overlapping plate (3) are fixedly connected by bolts (5). The steel bar connecting plate (2) is a rectangular structure, and the connecting steel bars (4) are welded horizontally and vertically to the top and / or bottom of the steel bar connecting plate (2); The newly added bridge foundation also includes newly added pile foundations (9), which are located at the bottom of the newly added pier (7) and are integrated with the newly added pier (7).

2. The bridge reinforcement foundation as described in claim 1, characterized in that: The concrete passage hole (21) is an elongated hole, and the concrete passage holes (21) are spaced apart along the length and width directions of the steel bar connecting plate (2).

3. The bridge reinforcement foundation as described in claim 1, characterized in that: The top of the newly added foundation (7) is provided with a boss surrounding the existing foundation (8), and the space between the boss and the existing foundation (8) is filled with an epoxy resin grout layer.

4. A bridge reinforcement foundation as described in claim 1, characterized in that: The existing pile foundation (1) is provided with multiple piles, and the steel reinforcement connecting plate (2) is fitted on each of the multiple existing pile foundations (1). The two adjacent steel reinforcement connecting plates (2) are connected by the connecting steel reinforcement (4).

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