A narrow space bridge pier pile foundation platform
By combining a support structure and an I-beam platform within the bridge installation space, the stability and strength issues of bridge pile foundation construction in confined spaces were resolved, enabling the safe and stable construction platform to be built on existing bridges.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG FUANLAI CONSTR UPHOLSTERY DESIGN CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-03
Smart Images
Figure CN224451701U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of foundation pile platform technology, and in particular to a bridge pier foundation pile platform in a confined space. Background Technology
[0002] When constructing new pile foundations near existing bridges, the challenge of limited site space is often encountered. The access, positioning, and operation of large construction equipment are severely restricted, making traditional methods of laying large-area construction platforms or using large support structures difficult to implement. To overcome site limitations, sometimes existing bridge structures (such as cap beams or slab beams) are considered as part of a temporary support platform. However, this approach carries significant risks: the cap beams and pile foundations of existing bridges were not designed to withstand additional large pile driver loads and construction impact loads. Applying loads directly to them, especially at critical pile foundation top surfaces, can easily lead to localized damage to the cap beams, overloading or even failure of the pile foundations, seriously threatening the structural and operational safety of the existing bridge. Utility Model Content
[0003] In view of the shortcomings and defects of the existing technology, a bridge pier pile foundation platform in a confined space is provided. In order to achieve the purpose of building a more stable pile foundation platform in a restricted space, the present invention provides the following technical solution.
[0004] A narrow-space bridge pier pile foundation platform includes a bridge and a supporting structure. An installation space is provided between the bridge sections, and the supporting structure is located within the installation space. An I-beam platform is erected on the cap beam of the bridge. The I-beam platform includes a fixed part and a connecting part. The connecting part abuts against the upper end of the fixed part. An assembly step is provided at one end of the bridge section near the supporting structure. Both ends of the fixed part abut against the assembly step. The supporting structure includes several side plates and a base plate. The base plate is placed on the water surface. Four steel pipe piles are arranged between the base plate and the I-beam platform. One end of each steel pipe pile abuts against the base plate, and the other end abuts against the lower end of the I-beam platform. Several foundation piles are arranged at the lower end of the base plate.
[0005] Compared with the prior art, this utility model makes full use of the existing space by setting the support structure in the installation space between bridges and using the original bridge slab beams to build a new pile foundation platform; by setting assembly steps on the bridge and fixing the I-beam platform on the assembly steps, the stability and stress strength of the pile foundation platform are greatly improved without affecting the load-bearing structure of the bridge.
[0006] Furthermore, the connecting part includes five parallel first connecting segments and a second connecting segment perpendicular to the first connecting segments, the two ends of the second connecting segment being fixedly connected to the first connecting segment by welding.
[0007] Through the above improvements, the connecting part includes a first connecting section and a second connecting section. The second connecting section is welded onto the first connecting section. Welding improves the connection between the first and second connecting sections and enhances the overall stability of the I-beam platform during use.
[0008] Furthermore, the first connecting section uses double-jointed 45B I-beams, while the second connecting section uses single-jointed 45B I-beams.
[0009] Through the above improvements, the first connecting section adopts double-span 45B I-beams, which have better structural strength and load-bearing capacity, greatly improving the overall strength of the I-beam platform. The second connecting section adopts single-span 45B I-beams, which can further improve the overall strength.
[0010] Furthermore, the foundation piles are symmetrically arranged at the lower end of the base plate. The foundation piles include a first pile and a second pile in the first column, and a third, a fourth, and a fifth pile in the second column. The first and second piles are coaxially arranged with the steel pipe piles. The spacing between the first and second piles, the spacing between the third and fourth piles, and the spacing between the fourth and fifth piles are the same.
[0011] Through the above improvements, the foundation piles are symmetrically arranged at the lower end of the base plate. The spacing between the first and second piles, the spacing between the third and fourth piles, and the spacing between the fourth and fifth piles are the same, so that the base plate is subjected to uniform stress. The first and second piles are coaxially arranged with the steel pipe piles, so that the overall connection center of the platform remains stable.
[0012] Furthermore, the placement positions of the second connecting segments are spaced apart from the placement positions of the foundation piles, that is, the second connecting segments are respectively placed on both sides of the first pile and the second pile, between the third pile and the fourth pile, and between the fourth pile and the fifth pile, and the spacing between the second connecting segments is the same as the spacing between the first pile and the second pile.
[0013] Through the above improvements, the placement of the second connecting section is spaced apart from the placement of the foundation pile, so that the overall stress on the I-beam platform and the base plate below is uniform, preventing the new construction load from being directly and centrally transferred to the pile foundation.
[0014] Furthermore, the fixing part includes a support section and a fixing section, the support section is disposed on the assembly step, and the fixing section is inclined relative to the first connecting section.
[0015] With the above improvements, the fixing part includes a support section and a fixing section. The support section is set on the assembly step. By setting the support section, the fixing section can avoid direct contact with the bridge. At the same time, by padding the lower end of the fixing section with the support section, the fixing section can be at the same height as the bridge deck, which facilitates construction. The fixing section is inclined relative to the first connecting section, so that the fixing section can distribute the force. Attached Figure Description
[0016] Figure 1 A top-view structural diagram of a bridge pier pile foundation platform in a confined space;
[0017] Figure 2 This is a side view structural diagram of a bridge pier pile foundation platform in a confined space.
[0018] Among them, 1. Bridge; 1.1 Installation space; 1.2 Assembly steps; 2. Support structure; 2.1 Side plate; 2.2 Base plate; 2.3 Steel pipe pile; 3. I-beam platform; 3.1 Fixing part; 3.11 Support section; 3.12 Fixing section; 3.2 Connecting part; 3.21 First connecting section; 3.22 Second connecting section; 4. Foundation pile; 4.1 First pile; 4.2 Second pile; 4.3 Third pile; 4.4 Fourth pile; 4.5 Fifth pile. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] like Figure 1 as well as Figure 2As shown, a narrow-space bridge pier pile foundation platform includes a bridge 1 and a supporting structure 2. An installation space 1.1 is provided between the bridge 1s, and the supporting structure 2 is set in the installation space 1.1. An I-beam platform 3 is erected on the cap beam of the bridge 1. The I-beam platform 3 includes a fixing part 3.1 and a connecting part 3.2. The connecting part 3.2 is abutted on the upper end of the fixing part 3.1. An assembly step 1.2 is provided at one end of the bridge 1 near the supporting structure 2. Both ends of the fixing part 3.1 are abutted on the assembly step 1.2. The supporting structure 2 includes several side plates 2.1 and a base plate 2.2. The base plate 2.2 is set on the water surface. Four steel pipe piles 2.3 are provided between the base plate 2.2 and the I-beam platform 3. One end of the steel pipe pile 2.3 abuts against the base plate 2.2, and the other end abuts against the lower end of the I-beam platform 3. Several foundation piles 4 are provided at the lower end of the base plate 2.2.
[0022] The connecting part 3.2 includes five parallel first connecting sections 3.21 and a second connecting section 3.22 perpendicular to the first connecting sections 3.21. The two ends of the second connecting section 3.22 are fixedly connected to the first connecting section 3.21 by welding. Welding makes the connection between the first connecting section 3.21 and the second connecting section 3.22 better, and improves the overall stability of the I-beam platform 3 during use.
[0023] The first connecting section 3.21 uses double-span 45B I-beams. As the main component, the first connecting section 3.21 uses double-span 45B I-beams, which has good structural strength and load-bearing capacity, greatly improving the overall strength of the I-beam platform 3. The second connecting section 3.22 uses single-span 45B I-beams, which can further improve the overall strength.
[0024] The foundation piles 4 are symmetrically arranged at the lower end of the base plate 2.2. The foundation piles 4 include a first pile 4.1 and a second pile 4.2 arranged in the first column, a third pile 4.3, a fourth pile 4.4 and a fifth pile 4.5 arranged in the second column. The spacing between the first pile 4.1 and the second pile 4.2, the spacing between the third pile 4.3 and the fourth pile 4.4, and the spacing between the fourth pile 4.4 and the fifth pile 4.5 are the same, so that the base plate 2.2 is subjected to uniform stress. The first pile 4.1 and the second pile 4.2 are coaxially arranged with the steel pipe piles 2.3, so that the overall connection center of the platform remains stable.
[0025] The placement of the second connecting section 3.22 is spaced apart from the placement of the foundation pile 4. Specifically, the second connecting section 3.22 is respectively located on both sides of the first pile 4.1 and the second pile 4.2, between the third pile 4.3 and the fourth pile 4.4, and between the fourth pile 4.4 and the fifth pile 4.5. The spacing between the second connecting sections 3.22 is the same as the spacing between the first pile 4.1 and the second pile 4.2, so that the overall stress on the I-beam platform 3 and the base plate 2.2 below is uniform, preventing the new construction load from being directly and centrally transferred to the pile foundation.
[0026] The fixing part 3.1 includes a supporting section 3.11 and a fixing section 3.12. The supporting section 3.11 is set on the assembly step 1.2. By setting the supporting section 3.11, the fixing section 3.12 can be prevented from directly contacting the bridge 1. At the same time, by padding the fixing section 3.12 with the supporting section 3.11, the fixing section 3.12 can be at the same height as the bridge deck of the bridge 1, which facilitates construction. The fixing section 3.12 is inclined relative to the first connecting section 3.21, so that the fixing section 3.12 can distribute the force.
[0027] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.
Claims
1. A bridge pier pile foundation platform in a confined space, characterized in that: The system includes a bridge (1) and a supporting structure (2). An installation space (1.1) is provided between the bridges (1). The supporting structure (2) is located within the installation space (1.1). An I-beam platform (3) is erected on the cap beam of the bridge (1). The I-beam platform (3) includes a fixing part (3.1) and a connecting part (3.2). The connecting part (3.2) abuts against the upper end of the fixing part (3.1). An assembly step (1.2) is provided at one end of the bridge (1) near the supporting structure (2). The two ends of the fixing part (3.1) are abutted on the assembly step (1.2). The support structure (2) includes several side plates (2.1) and a base plate (2.2). The base plate (2.2) is set on the water surface. Four steel pipe piles (2.3) are set between the base plate (2.2) and the I-beam platform (3). One end of the steel pipe pile (2.3) abuts against the base plate (2.2), and the other end abuts against the lower end of the I-beam platform (3). Several foundation piles (4) are set at the lower end of the base plate (2.2).
2. A narrow space pier pile foundation platform according to claim 1, characterized in that: The connecting part (3.2) includes five parallel first connecting segments (3.21) and a second connecting segment (3.22) perpendicular to the first connecting segments (3.21). The two ends of the second connecting segment (3.22) are fixedly connected to the first connecting segment (3.21) by welding.
3. A narrow space pier pile foundation platform according to claim 2, characterized in that: The first connecting section (3.21) uses double-jointed 45B I-beams, and the second connecting section (3.22) uses single-jointed 45B I-beams.
4. A narrow space pier pile foundation platform according to claim 2, characterized in that: The foundation piles (4) are symmetrically arranged at the lower end of the base plate (2.2). The foundation piles (4) include a first pile (4.1) and a second pile (4.2) arranged in the first column, and a third pile (4.3), a fourth pile (4.4) and a fifth pile (4.5) arranged in the second column. The first pile (4.1) and the second pile (4.2) are coaxially arranged with the steel pipe pile (2.3). The spacing between the first pile (4.1) and the second pile (4.2), the spacing between the third pile (4.3) and the fourth pile (4.4), and the spacing between the fourth pile (4.4) and the fifth pile (4.5) are the same.
5. A narrow space pier pile foundation platform according to claim 4, characterized in that: The placement positions of the second connecting segments (3.22) are spaced apart from the placement positions of the foundation piles (4). That is, the second connecting segments (3.22) are respectively placed on both sides of the first pile (4.1) and the second pile (4.2), between the third pile (4.3) and the fourth pile (4.4), and between the fourth pile (4.4) and the fifth pile (4.5). The spacing between the second connecting segments (3.22) is the same as the spacing between the first pile (4.1) and the second pile (4.2).
6. A narrow space pier pile foundation platform according to claim 2, characterized in that: The fixed part (3.1) comprises a supporting section (3.11) and a fixed section (3.12), the supporting section (3.11) is arranged on the assembly step (1.2), and the fixed section (3.12) is arranged obliquely compared with the first connecting section (3.21).