Light platform device for automatically monitoring seawall construction process

Abstract

The utility model relates to a light platform device for automatic monitoring of seawall construction process, which comprises three parts of improved pile foundation structures, a lateral fixing structure and an upper platform structure, the improved pile foundation structures comprise a first improved pile foundation structure and a second improved pile foundation structure which are respectively composed of a vertical hollow steel pipe, a transverse perforated disc and a snap ring; the lateral fixing structure is composed of a first inclined strut, an upper end fixing bolt, a lower end fixing bolt, an upper horizontal cross rod and left and right fixing bolts. The upper platform structure is composed of a top grating plate, peripheral handrails, cross rods, second inclined struts, a climbing ladder and the like. Compared with the prior art, by improving the pile foundation structure and the lateral fixing structure, the monitoring platform pile foundation has the advantages that the monitoring platform pile foundation on the deep soft foundation is convenient to form, high in vertical bearing capacity, high in horizontal and transverse anti-pressure capacity, capable of being combined with drilling and burying for synchronous operation, convenient to install equipment by people, good in stability, high in safety and the like.

Description

Technical Field

[0001] This utility model belongs to the field of waterway engineering, and relates to the field of monitoring technology for seawall construction process, especially the automated monitoring technology applicable to the construction process of seawalls on deep soft foundations. Background Technology

[0002] In waterway engineering, the installation of automated monitoring platforms during the construction of seawalls on deep soft foundations is a challenging task. Since these platforms are typically located on the outer side of the seawall, the traditional approach involves driving several foundation piles using a piling vessel and then welding the monitoring platform onto them. However, this method has certain limitations in practical application, including:

[0003] First, it is not economically viable: For a pile-driving vessel to drive several foundation piles, it is necessary to configure an engineering vessel equipped with a crane to cooperate with the pile-driving vessel. The cost of these two types of vessels is relatively high, and the monitoring work is generally limited in terms of cost, making it impossible to afford the high cost of chartering vessels and pile driving. At the same time, the material cost of the foundation piles themselves is also relatively high.

[0004] Second, the post-construction restoration is difficult: After the seawall construction is completed, the automated monitoring platform needs to be removed. Traditional methods require the redeployment of piling vessels and engineering vessels equipped with cranes to carry out the extraction of the foundation piles, which is both difficult and costly.

[0005] 3. The foundation piles are driven to a greater depth, resulting in a higher overall cost for the platform: When driving steel pipe piles into deep soft soil, the lateral resistance of the soft soil is very small. If the diameter of the foundation piles is small, the foundation piles will sink on their own during the driving process; if the diameter of the foundation piles is large, the cost will increase significantly.

[0006] Therefore, in summary, there is an urgent need to develop a lightweight platform device for automated monitoring of seawall construction on deep soft foundations, in order to overcome the aforementioned shortcomings and deficiencies of existing technologies. Utility Model Content

[0007] The purpose of this invention is to solve the above-mentioned problems in the prior art and to provide a lightweight platform device for automated monitoring of seawall construction.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A lightweight platform device for automated monitoring of seawall construction includes: an improved pile foundation structure, consisting of a first improved pile foundation structure and a second improved pile foundation structure; the first improved pile foundation structure includes a first vertical hollow steel pipe, a first horizontally perforated disc, and a first retaining ring; the second improved pile foundation structure includes a second vertical hollow steel pipe, a second horizontally perforated disc, and a second retaining ring; a lateral fixing structure, consisting of a first diagonal brace, an upper fixing bolt, a lower fixing bolt, an upper horizontal crossbar, a left fixing bolt, and a right fixing bolt; and an upper platform structure, consisting of a top grating plate, surrounding railings, crossbars, a second diagonal brace, and a ladder for access.

[0010] Preferably, the first vertical hollow steel pipe and the second vertical hollow steel pipe are connected by an external threaded joint, and both are steel pipes with a diameter of 168mm and a length of 3m; wherein, the first vertical hollow steel pipe is inserted into the deep soft soil to a depth of 8m-10m, and the second vertical hollow steel pipe is inserted to a depth of 4m-6m.

[0011] Preferably, the first transversely perforated disc is a circular steel plate with an outer diameter of 1000mm, a perforation diameter of 200mm, and a thickness of 5mm; the second transversely perforated disc is a circular steel plate with an outer diameter of 500mm, a perforation diameter of 200mm, and a thickness of 5mm.

[0012] Preferably, the first and second retaining rings are hollow steel retaining rings with an inner diameter of 170 mm and a thickness of 5 mm; wherein the height of the first retaining ring is 100 mm and the height of the second retaining ring is 50 mm.

[0013] Preferably, the first diagonal brace is an angle steel with a flange thickness of 3-5mm, a height of 5-8mm, and a length of 3000-3500mm; wherein, the first diagonal brace has small holes with a diameter of 2-5mm at both the upper and lower ends, and is connected to the second improved pile foundation structure and the first improved pile foundation structure by fixing bolts at the lower end and the upper end, respectively.

[0014] Preferably, the upper horizontal crossbar is made of angle steel with a thickness of 3-5mm, a height of 5-8mm, and a length of 500-600mm; wherein, the upper horizontal crossbar is connected to the first diagonal brace and the first improved pile foundation structure by left and right fixing bolts to form a triangular wind-resistant reinforcement structure.

[0015] Preferably, the crossbars and second diagonal braces of the upper platform structure are angle steel, with a wing plate thickness of 3-5mm, a height of 5-8mm, and a length of 2000-3000mm; wherein the crossbars and second diagonal braces weld four first vertical hollow steel pipes together to form a stable frame.

[0016] Preferably, the ladder for climbing is 50cm wide and the step spacing is 30cm, and it is welded from steel pipes with a diameter of 30-40mm; wherein, the top of the ladder for climbing is provided with an inverted U-shaped hook, which can be hung on the crossbar.

[0017] Preferably, the height of the surrounding railings is 1000-1200mm, they are welded from steel pipes with a diameter of 50mm, and the vertical railing spacing is 20-30mm.

[0018] Preferably, the top grating is laid on the surface of the upper platform structure and fixed by welding or bolts.

[0019] Due to the adoption of the above technical solution, the beneficial effects obtained by this utility model include:

[0020] 1. This utility model, by improving the pile foundation structure and lateral fixing structure, can achieve the advantages of convenient pile foundation forming, high vertical bearing capacity, strong horizontal compressive strength, simultaneous operation with drilling and burial, convenient personnel access for equipment installation, good stability, and high safety for monitoring platform on deep soft soil. It can realize the purpose of automated monitoring of seawall construction process on deep soft soil and has broad application prospects in the automated monitoring of seawall construction process on deep soft soil in similar water transport projects.

[0021] 2. This utility model effectively increases the contact area of ​​the pile end by using the first and second improved pile foundation structures with transversely perforated discs (outer diameter 1000mm / 500mm), thereby increasing the equivalent end resistance by 35 times and 9 times respectively (compared to traditional single steel pipe piles with the same parameters). The transversely perforated discs and retaining rings work together with the soft soil backfill to enhance the vertical compressive and tensile bearing capacity and horizontal bearing capacity of the single pile, preventing pile sinking, upward pulling and horizontal lateral collapse. At the same time, the triangular lateral reinforcement and multi-point pile foundation support can improve the safety and stability of construction equipment and adapt to the complex environment of deep silt and soft soil foundations in coastal areas. Attached Figure Description

[0022] Figure 1 This is a side view of an embodiment of the lightweight platform device for automated monitoring of seawall construction on deep soft foundations according to this utility model.

[0023] The attached figures are labeled as follows:

[0024] 100- Improved pile foundation structure; 100-1 First improved pile foundation structure; 100-2 Second improved pile foundation structure;

[0025] 110 - First vertical hollow steel pipe; 120 - First horizontally perforated disc; 130 - First retaining ring;

[0026] 140 - Second vertical hollow steel pipe; 150 - Second horizontal perforated disc; 160 - Second retaining ring;

[0027] 200 - Lateral fixing structure; 210 - First diagonal brace; 220 - Lower fixing bolt; 230 - Upper fixing bolt; 240 - Left fixing bolt; 250 - Upper horizontal crossbar; 260 - Right fixing bolt;

[0028] 300 - Upper platform structure; 310 - Top grid plate; 320 - Second diagonal brace; 330 - Crossbar; 340 - Accessible area

[0029] Ladder; 350-inverted U-shaped hooks; 360-surround railings;

[0030] 400 - Water surface; 500 - Deep soft soil surface. Detailed Implementation

[0031] like Figure 1 As shown, this utility model provides a lightweight platform device for automated monitoring of seawall construction on deep soft foundations, solving the problems of high cost, insufficient bearing capacity, and low construction efficiency of traditional technologies. The device comprises three parts: an improved pile foundation structure 100, a lateral fixing structure 200, and an upper platform structure 300.

[0032] The improved pile foundation structure 100 consists of a first improved pile foundation structure 100-1 and a second improved pile foundation structure 100-2. The first improved pile foundation structure 100-1 includes a first vertical hollow steel pipe 110, a first horizontally perforated disc 120, and a first retaining ring 130. In this embodiment, the first vertical hollow steel pipe 110 is generally a steel pipe connected vertically by external threaded joints and inserted into a certain depth in the deep soft soil. The first horizontally perforated disc 120 is a circular steel plate. The first retaining ring 130 is a hollow steel retaining ring. Correspondingly, the second improved pile foundation structure 100-2 includes a second vertical hollow steel pipe 140, a second horizontally perforated disc 150, and a second retaining ring 160. The second vertical hollow steel pipe 140 is generally a steel pipe connected vertically by external threaded joints and inserted into a certain depth in the deep soft soil. The second horizontally perforated disc 150 is a circular steel plate. The second retaining ring 160 is a hollow steel retaining ring.

[0033] In this embodiment, the lateral fixing structure 200 mainly enhances the horizontal compressive strength and resists wind loads and lateral earth pressure. Its specific structure consists of a first diagonal brace 210, an upper fixing bolt 230, a lower fixing bolt 220, an upper horizontal crossbar 250, a left fixing bolt 240, and a right fixing bolt 260. The first diagonal brace 210 is made of angle steel, and small holes are drilled at both its upper and lower ends to house the fixing bolts, which are then fitted with nuts. The upper horizontal crossbar 250 is also made of angle steel, and small holes are drilled at both its left and right ends to house the upper fixing bolt 230 and the lower fixing bolt 220, which are then fitted with nuts. Small holes are drilled at the connection between the first diagonal brace 210 and the upper horizontal crossbar 250 to facilitate the fixing of the left end of the upper horizontal crossbar 250 with the fixing bolt 240.

[0034] In this embodiment, the upper platform structure 300 provides a safe working space and supports the rapid installation of monitoring equipment. Specifically, it consists of a top grid plate 310, surrounding railings 360, crossbars 330, second diagonal braces 320, and a ladder 340. The crossbars 330 and second diagonal braces 320 weld four first vertical hollow steel pipes 110 together to form a stable upper platform structure 300. The top grid plate 310 is placed on the surface of the platform structure 300, and surrounding railings 360 are welded around it. The ladder 340 has an inverted U-shaped hook 350 at the top, which can be hung on the crossbars 330 for easy access for personnel.

[0035] In this embodiment, the operation process includes pile foundation construction, lateral fixing structure installation, and upper platform construction, as detailed below:

[0036] The construction of the first improved pile foundation structure 100-1 begins with drilling using a water-based drilling rig. The drill rod of the rig penetrates the water surface 400mm and enters the deep soft soil surface 500mm. After drilling, a first vertical hollow steel pipe 110 is installed to a depth of at least 0.5m. Then, a first horizontally perforated disc 120 is fitted onto the top of the first vertical hollow steel pipe 110, and a first retaining ring 130 (mainly used to fix the disc) is installed. The remaining first vertical hollow steel pipes 110 are then connected to the retaining ring 130. The drill rod of the drilling rig applies force to the first vertical hollow steel pipe 110, and through the action of the retaining ring 130, the first horizontally perforated disc 120 is pressed 0.5m below the mud surface. At this point, the first vertical hollow steel pipe 110 is inserted to the designated depth. Due to the action of the retaining ring 130, the first horizontally perforated disc 120 is pulled downwards by 0.5m and then covered by the surrounding soft soil. At the same time, the installation of the remaining four first improved pile foundation structures 100-1 was completed using the same method as above.

[0037] The installation principle of the second improved pile foundation structure 100-2 is the same as that of the first improved pile foundation structure 100-1. The difference lies in the different installation depths of the second vertical hollow steel pipe 140 and the different dimensions of the second transverse perforated disc 150. The second improved pile foundation structure 100-2 typically also has four piles installed. Through this method, the originally weak and deep soft foundation cannot provide a large vertical compressive bearing capacity to the first vertical hollow steel pipe 110 and the second vertical hollow steel pipe 140. However, through the area increase effect of the first transverse perforated disc 120 and the second transverse perforated disc 150, the deep soft foundation provides the first vertical hollow steel pipe 110 and the second vertical hollow steel pipe 140 with several to tens of times the vertical compressive bearing capacity.

[0038] Then, the first transversely perforated disc 120 and the second transversely perforated disc 150 are used to increase the vertical compressive bearing capacity of the first vertical hollow steel pipe 110 and the second vertical hollow steel pipe 140, according to the design formula for the axial compressive bearing capacity of a single steel pipe pile: With other parameters remaining unchanged, the cross-sectional area A at the pile tip was increased. The diameter of the first transverse perforated disc 120 was 1000 mm, which is 35 times larger than the diameter of the first vertical hollow steel pipe 110 (168 mm). The diameter of the second transverse perforated disc 150 was 500 mm, which is nearly 9 times larger than the diameter of the second vertical hollow steel pipe 140 (168 mm). Similarly, the vertical tensile bearing capacity and horizontal compressive bearing capacity also increased by several to tens of times.

[0039] Next, the first diagonal brace 210 of the lateral fixing structure 200 is fixed to the first improved pile foundation structure 100-1 and the second improved pile foundation structure 100-2 using upper fixing bolts 230 and lower fixing bolts 220, to bear the horizontal load. At the same time, the first diagonal brace 210 and the first improved pile foundation structure 100-1 are fixed by the upper horizontal crossbar 250 and the left and right fixing bolts 240 and 260, forming a triangular area to strengthen the horizontal wind resistance of the entire system.

[0040] Finally, the upper platform structure 300 uses horizontal bars 330 and second diagonal braces 320 to weld and connect four first vertical hollow steel pipes 110 together, forming a stable upper platform structure 300. A top grating plate 310 is placed on the surface of the platform structure, and the top of the access ladder 340 is equipped with inverted U-shaped hooks 350, which can be hung on the horizontal bars 330 for easy access. Meanwhile, railings 360 are welded around the upper platform structure 300 for safety protection.

[0041] It should be noted that in existing technologies, the traditional approach involves driving several foundation piles using a piling vessel and then welding the upper monitoring platform. This method has limitations including: poor economic efficiency, difficulty in post-construction restoration, deep pile driving, and high overall platform cost. Compared to existing technologies, this invention, through improvements to the pile foundation structure and lateral fixing structure, achieves advantages such as convenient pile foundation forming for monitoring platforms on deep soft soil, high vertical bearing capacity, strong horizontal compressive strength, simultaneous operation with drilling and installation, convenient personnel access for equipment installation, good stability, and high safety.

[0042] In addition, by using the first and second improved pile foundation structures with transverse perforated discs (outer diameter 1000mm / 500mm), the contact area at the pile end is effectively increased, thereby increasing the equivalent end resistance by 35 times and 9 times respectively (compared to traditional single steel pipe piles with the same parameters). The transverse perforated discs and retaining rings work together with soft soil backfill to enhance the vertical compressive and tensile bearing capacity and horizontal bearing capacity of the single pile, thus preventing the pile from sinking, pulling up, and horizontally collapsing.

[0043] Meanwhile, there is no need for large piling vessels or engineering vessels. The use of segmented steel pipes (3m / segment, external thread connection) and drilling installation process saves on equipment rental and material costs. The pile foundation installation and drilling operations can be carried out simultaneously, shortening the construction period.

[0044] Finally, the triangular lateral reinforcement and multi-point pile foundation support can improve the safety and stability of construction equipment and adapt to the complex environment of deep silt and soft soil foundations along the coast.

[0045] The foregoing descriptions and embodiments are provided to enable those skilled in the art to understand and apply this invention. Those skilled in the art will readily make various modifications to these contents and apply the general principles described herein to other embodiments without inventive effort. Therefore, this invention is not limited to the foregoing descriptions and embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this invention without departing from its scope should be within the protection scope of this invention.

Claims

1. A lightweight platform device for automated monitoring of seawall construction, characterized in that, include: Improved pile foundation structure: Composed of a first improved pile foundation structure and a second improved pile foundation structure; the first improved pile foundation structure includes a first vertical hollow steel pipe, a first horizontally perforated disc, and a first retaining ring; the second improved pile foundation structure includes a second vertical hollow steel pipe, a second horizontally perforated disc, and a second retaining ring; Lateral fixing structure: It consists of a first diagonal brace, an upper fixing bolt, a lower fixing bolt, an upper horizontal crossbar, a left fixing bolt, and a right fixing bolt; Upper platform structure: consists of a top grid panel, four railings, crossbars, a second diagonal brace, and a ladder for people to climb.

2. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The first vertical hollow steel pipe and the second vertical hollow steel pipe are connected by an external threaded joint, and both are steel pipes with a diameter of 168mm and a length of 3m. The first vertical hollow steel pipe is inserted into the deep soft soil to a depth of 8m-10m, and the second vertical hollow steel pipe is inserted to a depth of 4m-6m.

3. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The first transversely perforated disc is a circular steel plate with an outer diameter of 1000mm, a perforation diameter of 200mm, and a thickness of 5mm; the second transversely perforated disc is a circular steel plate with an outer diameter of 500mm, a perforation diameter of 200mm, and a thickness of 5mm.

4. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The first and second retaining rings are hollow steel retaining rings with an inner diameter of 170 mm and a thickness of 5 mm; wherein, the height of the first retaining ring is 100 mm and the height of the second retaining ring is 50 mm.

5. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The first diagonal brace is an angle steel with a flange thickness of 3-5mm, a height of 5-8mm, and a length of 3000-3500mm. The first diagonal brace has small holes with a diameter of 2-5mm at both the upper and lower ends, and is connected to the second improved pile foundation structure and the first improved pile foundation structure by fixing bolts at the lower end and the upper end, respectively.

6. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The upper horizontal crossbar is made of angle steel with a thickness of 3-5mm, a height of 5-8mm, and a length of 500-600mm. The upper horizontal crossbar is connected to the first diagonal brace and the first improved pile foundation structure by left and right fixing bolts to form a triangular wind-resistant reinforcement structure.

7. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The crossbars and second diagonal braces of the upper platform structure are made of angle steel, with a wing plate thickness of 3-5mm, a height of 5-8mm, and a length of 2000-3000mm; wherein, the crossbars and second diagonal braces are welded together with four first vertical hollow steel pipes to form a stable frame.

8. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The ladder for climbing is 50cm wide and the step spacing is 30cm. It is made of steel pipe with a diameter of 30-40mm. The top of the ladder is equipped with an inverted U-shaped hook that can be hung on the crossbar.

9. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The surrounding railings are 1000-1200mm high, welded from steel pipes with a diameter of 50mm, and the vertical railings are spaced 20-30mm apart.

10. The lightweight platform device for automated monitoring of seawall construction process according to claim 1, characterized in that, The top grating is laid on the surface of the upper platform structure and fixed by welding or bolts.

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