A new type of pile cap for steel pipe piles on a floating steel platform

Abstract

This utility model relates to the field of steel pipe pile technology, specifically a novel pile cap for steel pipe piles used in floating steel platforms. It includes a circular steel plate with a cross-shaped steel plate fixedly connected to the lower center of the circular steel plate. Several stiffening plates are fixedly connected to the lower end of the circular steel plate near the cross-shaped steel plate. A load-bearing block is fixedly connected to the upper end of the circular steel plate, and reinforcing channel steel is provided on both sides of the load-bearing block. This utility model solves the problems of lightweight clamp-type pile caps, limited design bearing capacity, and difficulty in meeting the increasing load requirements of steel platforms. It also addresses the issues of long installation time and susceptibility to water level fluctuations.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe pile technology, specifically to a new type of pile cap for steel pipe piles on a floating steel platform. Background Technology

[0002] In the construction of a steel platform on water, the pile cap of the steel pipe pile is a key component connecting the upper steel platform structure and the lower steel pipe pile. Its performance directly affects the stability and load-bearing capacity of the entire steel platform.

[0003] Traditional steel pipe pile caps often employ a clamp design, using the clamping force to connect the steel pipe pile and the pile cap and transfer force. However, clamp-type pile caps are relatively lightweight and have limited design bearing capacity, making it difficult to meet the increasing load demands of steel platforms. Especially in large-scale maritime projects, their limited bearing capacity poses potential safety hazards, affecting the normal use and lifespan of the steel platform. Furthermore, this type of pile cap requires a long installation time and is susceptible to water level fluctuations, further limiting the practicality of clamp-type pile caps. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of pile cap for steel pipe piles of steel platforms on water, which solves the problems that the self-weight of clamp-type pile caps is relatively light, the design bearing capacity is limited, and it is difficult to meet the increasing load requirements of steel platforms. At the same time, it also solves the problems that the pile cap installation time is long and it is easily affected by water level fluctuations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a new type of pile cap for steel pipe piles of steel platforms on water, comprising a disc steel plate, a cross steel plate fixedly connected to the lower center of the disc steel plate, several stiffening plates fixedly connected to the lower end of the disc steel plate near the end of the cross steel plate, an unloading block fixedly connected to the upper end of the disc steel plate, and reinforcing channel steel provided on both sides of the unloading block.

[0006] With the above structural design, four 12.6# I-beams are welded to the top of the disc steel plate according to the load-bearing strength requirements to serve as unloading blocks, providing stable support for the steel platform and bearing various vertical loads. Channel steel is welded to both sides of the I-beams to ensure welding precision, so that the I-beams are accurately positioned at the center of the pile cap and the load-bearing capacity of the superstructure is evenly distributed.

[0007] Preferably, the distance between the end of the cross steel plate and the adjacent stiffening plate is greater than the wall thickness of the steel pipe pile.

[0008] Preferably, the top surface of the steel pipe pile abuts against the bottom surface of the disc steel plate, and the end of the cross steel plate abuts against the inner surface of the steel pipe pile.

[0009] The above design scheme involves welding a cross-shaped steel plate to the bottom of the main structure. By precisely designing the size and position of the cross-shaped steel plate, it is ensured to fit tightly against the top of the steel pipe pile, guaranteeing the stability of the connection. Multiple vertical stiffening plates are welded to the outside to assist in positioning, improve positioning accuracy, and ensure that the steel pipe pile is always in the center of the pile cap, so that the upper load is evenly distributed on the steel pipe pile.

[0010] Preferably, the thickness of the disc steel plate is not less than 20 mm.

[0011] With the above structural design, the main structure of the pile cap is made of a disc-shaped steel plate with a thickness of not less than 20mm. The thickness of the steel plate can be flexibly adjusted according to the design load requirements and the strength of the steel on site.

[0012] Preferably, the thickness of the cross steel plate is not less than 10 mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Thanks to the use of unloading blocks, this solution can bear higher vertical loads compared to traditional clamp pile caps, making it particularly suitable for large-scale high-pile wharf projects with strong bearing capacity and large pile spacing.

[0015] 2. This pile cap can be prefabricated before the steel pipe pile construction, effectively saving construction time. The installation method adopts a cap-type installation, which is minimally affected by the water level and significantly improves the installation speed.

[0016] 3. The limiting device of this pile cap integrates the design of cross steel plate and stiffening plates on both sides, making the installation more precise and stable, and significantly enhancing the load-bearing capacity. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is a schematic diagram of the bottom structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the top structure of this utility model. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: a novel pile cap for steel pipe piles on a floating steel platform, comprising a disc-shaped steel plate 4. The main structure of the pile cap is made of a disc-shaped steel plate, and the thickness of the steel plate can be flexibly adjusted according to the design load requirements and the strength of the steel on site. The diameter of the disc-shaped steel plate 4 must be larger than the diameter of the steel pipe pile 1 to ensure that it covers the top of the steel pipe pile 1 and provides sufficient compressive and bending resistance. A cross-shaped steel plate 5 is fixedly connected to the lower center of the disc-shaped steel plate 4, and several stiffening plates 6 are fixedly connected to the lower end of the disc-shaped steel plate 4 near the end of the cross-shaped steel plate 5. By precisely designing the size and position of the cross-shaped steel plate 5, it is made to fit tightly against the top of the steel pipe pile 1, ensuring the stability of the connection. Multiple vertical stiffening plates 6 are welded to the outside to assist in positioning, improve the accuracy of positioning, and ensure that the steel pipe pile 1 is always in the center of the pile cap, so that the upper load is evenly distributed on the steel pipe pile 1. The upper end of the disc-shaped steel plate 4 is fixedly connected to an unloading block 2, and reinforcing channel steel 3 is provided on both sides of the unloading block 2. Multiple 12.6 I-beams are welded to the top of the disc-shaped steel plate 4 to serve as unloading blocks 2 for pile caps, which can effectively bear the vertical load transmitted by the steel platform. The reinforcing channel steel 3 is welded to both sides of the I-beams to ensure the accuracy of the positioning of the unloading block 2 and further disperse the vertical load of the steel platform.

[0023] The distance between the end of the cross steel plate 5 and the adjacent stiffening plate 6 is greater than the wall thickness of the steel pipe pile 1.

[0024] The top surface of the steel pipe pile 1 abuts against the bottom surface of the disc steel plate 4, and the end of the cross steel plate 5 abuts against the inner surface of the steel pipe pile 1.

[0025] The thickness of the disc steel plate 4 is not less than 20 mm. The thickness of the cross steel plate 5 is not less than 10 mm.

[0026] Working principle:

[0027] Prefabrication: Based on the design diameter of the steel pipe piles 1 of the steel platform, prefabricate circular steel plates 4 of different diameters and thicknesses as the main structure of the pile cap. Weld two longitudinal steel plates and one transverse steel plate (each with a thickness of not less than 10mm) to the bottom surface to form a cross-shaped steel plate 5. Weld a vertical stiffening plate 6 with a thickness of not less than 10mm to each end of the cross-shaped steel plate 5 to enhance the fixing effect. Weld four 12.6mm I-beams to the top of the pile cap according to the bearing capacity requirements as unloading blocks 2, providing stable support for the steel platform and bearing various vertical loads. Weld reinforcing channel steel 3 to both sides of the I-beams to ensure welding accuracy, so that the unloading blocks 2 are precisely positioned at the center of the pile cap, evenly distributing the bearing capacity of the superstructure.

[0028] Installation: After the construction of the steel pipe pile 1 of the water-based steel platform is completed, the prefabricated pile cap is hoisted to the top of the steel pipe pile 1 using hoisting equipment. The cross steel plate 5 at the bottom of the pile cap is precisely inserted into the steel pipe pile 1, and the vertical stiffening plate 6 is used to achieve stable fixation and ensure the accuracy of the limit position.

[0029] After the pile caps are fixed, the structural components of the upper steel platform are connected to the pile caps to complete the construction of the entire steel platform.

[0030] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel pile cap for steel pipe piles of a steel offshore platform, characterized in that: The disc steel plate (4) is fixedly connected to the center of the lower end of the disc steel plate (4), and several stiffening plates (6) are fixedly connected to the lower end of the disc steel plate (4) near the end of the cross steel plate (5). The unloading block (2) is fixedly connected to the upper end of the disc steel plate (4), and reinforcing channel steel (3) is provided on both sides of the unloading block (2).

2. A pile cap for a steel pipe pile of a novel steel platform over water according to claim 1, characterized in that: The distance between the end of the cross steel plate (5) and the adjacent stiffening plate (6) is greater than the wall thickness of the steel pipe pile (1).

3. A pile cap for a steel pipe pile of a novel steel platform over water according to claim 1, characterized in that: The top surface of the steel pipe pile (1) abuts against the bottom surface of the disc steel plate (4), and the end of the cross steel plate (5) abuts against the inner surface of the steel pipe pile (1).

4. A pile cap for a steel pipe pile of a novel steel platform over water according to claim 1, characterized in that: The thickness of the disc steel plate (4) is not less than 20 mm.

5. A pile cap for a steel pipe pile of a novel steel platform over water according to claim 1, characterized in that: The thickness of the cross steel plate (5) is not less than 10 mm.

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