A water cofferdam lock mouth steel pipe pile of pile cap is added high and construction method

Abstract

A method for constructing a water-retaining structure and method for raising a cofferdam with interlocking steel pipe piles in underwater conditions includes interlocking steel pipe piles, filling concrete I, extended steel pipes, water-facing vertical steel plate I, water-facing vertical steel plate II, interlocking horizontal sealing plate, backwater vertical steel plate, bottom horizontal steel plate, and filling concrete II. This invention is easy to operate, has simple procedures, low construction technical requirements, and does not require complex construction facilities. It can quickly and easily solve the problem of a cofferdam's designed height being lower than the actual water level using extended steel pipe piles.

Description

Technical Field

[0001] This invention belongs to the field of building construction, specifically the field of cofferdam steel pipe pile installation construction, and particularly relates to the water-retaining structure and construction method of underwater pier cap interlocking steel pipe pile cofferdam heightening. Background Technology

[0002] In recent years, my country has used steel pipe pile cofferdams for the construction of bridge substructures. However, when calculating the design height of the steel pipe piles for the cofferdam, the high water level used may be lower than the actual water level during construction, resulting in insufficient height of the steel pipe piles and requiring extension work. Summary of the Invention

[0003] The purpose of this invention is to provide a water-retaining structure and construction method for raising the cofferdam of steel pipe piles with interlocking joints in water, so as to solve the problem of insufficient height of steel pipe piles in current cofferdams.

[0004] This invention is achieved through the following technical solution.

[0005] The present invention discloses a water-retaining structure for raising and reinforcing a cofferdam with interlocking steel pipe piles in water, comprising interlocking steel pipe piles, filling concrete I, extension steel pipes, water-facing vertical steel plate I, water-facing vertical steel plate II, interlocking horizontal sealing plate, backwater vertical steel plate, bottom horizontal steel plate, and filling concrete II.

[0006] The bottom of the extension steel pipe is located in the filling concrete I, and the axis of the extension steel pipe coincides with that of the lock-joint steel pipe pile; a water-facing vertical steel plate I, a bottom horizontal steel plate, and a lock-joint horizontal sealing plate are installed between adjacent lock-joint steel pipe piles; a water-facing vertical steel plate II and a backwater vertical steel plate are installed between adjacent extension steel pipes; the water-facing vertical steel plate II and the water-facing vertical steel plate I are located in the same vertical plane, and the water-facing vertical steel plate II is located above the water-facing vertical steel plate I; the bottom horizontal steel plate is located at the bottom of the water-facing vertical steel plate I; the lock-joint horizontal sealing plate is located between the top of the lock-joint steel pipe pile and the bottom of the backwater vertical steel plate.

[0007] The vertical steel plate I on the water-facing side is connected to the side of the adjacent interlocking steel pipe pile, the bottom of the vertical steel plate II on the water-facing side, and the bottom horizontal steel plate, respectively; the vertical steel plate II on the water-facing side is connected to the side of the adjacent extension steel pipe and the top of the vertical steel plate I on the water-facing side, respectively; the horizontal sealing plate of the interlocking side is connected to the side of the adjacent extension steel pipe, the top of the interlocking steel pipe pile, and the bottom of the vertical steel plate on the backwater side, respectively; the bottom horizontal steel plate is connected to the side of the adjacent interlocking steel pipe pile and the bottom of the vertical steel plate I on the water-facing side, respectively; the vertical steel plate on the backwater side is connected to the side of the adjacent extension steel pipe and the horizontal sealing plate of the interlocking side, respectively.

[0008] The interlocked steel pipe pile contains filled concrete I; the area enclosed by the adjacent interlocked steel pipe pile, the adjacent extension steel pipe, the top of the filled concrete I, the water-facing vertical steel plate I, the water-facing vertical steel plate II, the bottom horizontal steel plate, the interlocked horizontal sealing plate, and the backwater vertical steel plate contains filled concrete II.

[0009] The construction method of the underwater foundation interlocking steel pipe pile cofferdam heightening water-retaining structure described in this invention is as follows:

[0010] (1) Pour the filling concrete I into the lock-mouth steel pipe pile to the top of the lock-mouth steel pipe pile, insert the extension steel pipe into the concrete I of the lock-mouth steel pipe pile, the insertion dimension of the extension steel pipe is not less than 1 / 4 of the length of the extension steel pipe, and ensure that the extension steel pipe coincides with the axis of the lock-mouth steel pipe pile.

[0011] (2) Install the bottom horizontal steel plate and weld it to the side of the adjacent interlocking steel pipe pile and the bottom of the vertical steel plate I on the water-facing side.

[0012] (3) Install the vertical steel plate I on the water-facing side and weld it to the side of the adjacent interlocking steel pipe pile, the bottom of the vertical steel plate II on the water-facing side, and the bottom horizontal steel plate respectively.

[0013] (4) Pour the first filling concrete II, which is level with the top of the lock steel pipe pile.

[0014] (5) Install the horizontal sealing plate of the lock and weld it to the side of the adjacent high-level steel pipe, the top of the lock steel pipe pile and the bottom of the vertical steel plate on the back side respectively.

[0015] (6) Install the vertical steel plate II on the water-facing side and weld it to the side of the adjacent heightened steel pipe and the top of the vertical steel plate I on the water-facing side respectively.

[0016] (7) Install the vertical steel plate on the back side and weld it to the side of the adjacent height-adjusting steel pipe and the horizontal sealing plate of the lock.

[0017] (8) Pour the second filling concrete II, which is flush with the top of the vertical steel plate on the back side.

[0018] In modern cofferdam construction, this invention offers the following advantages: The cofferdam steel pipe pile extension device and its construction method are easy to operate, involve simple procedures, require minimal worker skills, and do not necessitate complex construction facilities. It can quickly and easily solve the problem of cofferdam design height being lower than the actual water level using cofferdam extension steel pipe piles. Attached Figure Description

[0019] Figure 1 This is a plan view of a water-retaining structure for a cofferdam with interlocking steel pipe piles and underwater foundation, according to the present invention.

[0020] Figure 2 for Figure 1AA section view in the image.

[0021] Figure 3 for Figure 1 BB section view in the middle.

[0022] In the diagram, 1-locked steel pipe pile, 2-filled concrete I, 3-extension steel pipe, 4-water-facing vertical steel plate I, 5-water-facing vertical steel plate II, 6-locked horizontal sealing plate, 7-water-facing vertical steel plate, 8-bottom horizontal steel plate, 9-filled concrete II. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and through the following embodiments.

[0024] Example 1.

[0025] As shown in the figure, a water-retaining structure for a cofferdam with interlocking steel pipe piles in water includes an interlocking steel pipe pile 1, filling concrete Ⅰ 2, extension steel pipe 3, water-facing vertical steel plate Ⅰ 4, water-facing vertical steel plate Ⅱ 5, interlocking horizontal sealing plate 6, backwater vertical steel plate 7, bottom horizontal steel plate 8, and filling concrete Ⅱ 9.

[0026] The bottom of the extension steel pipe 3 is located in the filling concrete I2, and the axis of the extension steel pipe 3 coincides with that of the lock-joint steel pipe pile 1; a water-facing vertical steel plate I4, a bottom horizontal steel plate 8, and a lock-joint horizontal sealing plate 6 are installed between adjacent lock-joint steel pipe piles 1; a water-facing vertical steel plate II5 and a backwater vertical steel plate 7 are installed between adjacent extension steel pipes 3; the water-facing vertical steel plate II5 and the water-facing vertical steel plate I4 are located in the same vertical plane, and the water-facing vertical steel plate II5 is located on top of the water-facing vertical steel plate I4; the bottom horizontal steel plate 8 is located at the bottom of the water-facing vertical steel plate I4; the lock-joint horizontal sealing plate 6 is located between the top of the lock-joint steel pipe pile 1 and the bottom of the backwater vertical steel plate.

[0027] The vertical steel plate I4 on the water-facing side is connected to the side of the adjacent interlocking steel pipe pile 1, the bottom of the vertical steel plate II5 on the water-facing side, and the bottom horizontal steel plate 8, respectively; the vertical steel plate II5 on the water-facing side is connected to the side of the adjacent extension steel pipe 3 and the top of the vertical steel plate I4 on the water-facing side, respectively; the horizontal sealing plate 6 on the interlocking side is connected to the side of the adjacent extension steel pipe 3, the top of the interlocking steel pipe pile 1, and the bottom of the vertical steel plate on the backwater side, respectively; the bottom horizontal steel plate 8 on the backwater side is connected to the side of the adjacent interlocking steel pipe pile 1 and the bottom of the vertical steel plate I4 on the water-facing side, respectively; the vertical steel plate 7 on the backwater side is connected to the side of the adjacent extension steel pipe 3 and the horizontal sealing plate 6 on the interlocking side, respectively.

[0028] The steel pipe pile with the lock joint has a filling concrete Ⅰ2 inside; the area enclosed by the adjacent steel pipe pile with the lock joint 1, the adjacent connecting steel pipe 3, the top of the filling concrete Ⅰ2, the vertical steel plate Ⅰ4 on the water-facing side, the vertical steel plate Ⅱ5 on the water-facing side, the horizontal steel plate 8 at the bottom, the horizontal sealing plate of the lock joint 6, and the vertical steel plate 7 on the back side has a filling concrete Ⅱ9.

[0029] Example 2.

[0030] A construction method for a water-retaining structure with a steel pipe pile foundation and interlocking joint in underwater piers is provided, comprising the following steps.

[0031] (1) Pour filling concrete I2 into the lock-mouth steel pipe pile 1 up to the top of the lock-mouth steel pipe pile 1, insert the extension steel pipe 3 into the filling concrete I2 of the lock-mouth steel pipe pile 1, the insertion dimension of the extension steel pipe 3 shall not be less than 1 / 4 of the length of the extension steel pipe 3, and ensure that the extension steel pipe coincides with the axis of the lock-mouth steel pipe pile.

[0032] (2) Install the bottom horizontal steel plate 8 and weld it to the side of the adjacent lock steel pipe pile 1 and the bottom of the vertical steel plate Ⅰ4 on the water-facing side.

[0033] (3) Install the vertical steel plate I4 on the water-facing side and weld it to the side of the adjacent interlocking steel pipe pile 1, the bottom of the vertical steel plate II5 on the water-facing side, and the bottom horizontal steel plate 8 respectively.

[0034] (4) Pour the first filling concrete II9, which is level with the top of the lock steel pipe pile 1.

[0035] (5) Install the horizontal sealing plate 6 of the lock mouth and weld it to the side of the adjacent high-level steel pipe 3, the top of the lock mouth steel pipe pile 1 and the bottom of the vertical steel plate on the back water side respectively.

[0036] (6) Install the vertical steel plate II5 on the water-facing side and weld it to the side of the adjacent heightened steel pipe and the top of the vertical steel plate I on the water-facing side respectively.

[0037] (7) Install the vertical steel plate 7 on the back side and weld it to the side of the adjacent height-adjusting steel pipe 1 and the horizontal sealing plate 6 of the lock.

[0038] (8) Pour the second filling concrete II9, which is flush with the top of the vertical steel plate 7 on the back side.

[0039] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A water-retaining structure for a cofferdam with interlocking steel pipe piles in underwater foundation, characterized in that: It includes interlocked steel pipe piles, filling concrete I, extension steel pipes, water-facing vertical steel plate I, water-facing vertical steel plate II, interlocked horizontal sealing plate, backwater vertical steel plate, bottom horizontal steel plate, and filling concrete II; The bottom of the extension steel pipe is located in the filling concrete I, and the axis of the extension steel pipe coincides with that of the interlocking steel pipe pile; a water-facing vertical steel plate I, a bottom horizontal steel plate, and an interlocking horizontal sealing plate are installed between adjacent interlocking steel pipe piles; a water-facing vertical steel plate II and a backwater vertical steel plate are installed between adjacent extension steel pipes; the water-facing vertical steel plate II and the water-facing vertical steel plate I are located in the same vertical plane, and the water-facing vertical steel plate II is located above the water-facing vertical steel plate I; the bottom horizontal steel plate is located at the bottom of the water-facing vertical steel plate I; the interlocking horizontal sealing plate is located between the top of the interlocking steel pipe pile and the bottom of the backwater vertical steel plate; The vertical steel plate I on the water-facing side is connected to the side of the adjacent interlocking steel pipe pile, the bottom of the vertical steel plate II on the water-facing side, and the bottom horizontal steel plate, respectively; the vertical steel plate II on the water-facing side is connected to the side of the adjacent extension steel pipe and the top of the vertical steel plate I on the water-facing side, respectively; the horizontal sealing plate of the interlocking joint is connected to the side of the adjacent extension steel pipe, the top of the interlocking steel pipe pile, and the bottom of the vertical steel plate on the backwater side, respectively; the bottom horizontal steel plate is connected to the side of the adjacent interlocking steel pipe pile and the bottom of the vertical steel plate I on the water-facing side, respectively; the vertical steel plate on the backwater side is connected to the side of the adjacent extension steel pipe and the horizontal sealing plate of the interlocking joint, respectively. The interlocked steel pipe pile contains filled concrete I; the area enclosed by the adjacent interlocked steel pipe pile, the adjacent extension steel pipe, the top of the filled concrete I, the water-facing vertical steel plate I, the water-facing vertical steel plate II, the bottom horizontal steel plate, the interlocked horizontal sealing plate, and the backwater vertical steel plate contains filled concrete II.

2. The construction method of the underwater foundation interlocking steel pipe pile cofferdam heightening and water-retaining structure as described in claim 1, characterized in that: Follow these steps: (1) Pour the filling concrete I into the interlocked steel pipe pile to the top of the interlocked steel pipe pile, insert the extension steel pipe into the filling concrete I of the interlocked steel pipe pile, the insertion dimension of the extension steel pipe is not less than 1 / 4 of the length of the extension steel pipe, and ensure that the extension steel pipe coincides with the axis of the interlocked steel pipe pile; (2) Install the bottom horizontal steel plate and weld it to the side of the adjacent interlocking steel pipe pile; (3) Install the vertical steel plate I on the water-facing side, and weld the vertical steel plate I on the water-facing side to the side and bottom horizontal steel plate of the adjacent interlocking steel pipe pile respectively; (4) Pour the first filling concrete II until it is level with the top of the interlocking steel pipe pile; (5) Install the horizontal sealing plate of the lock opening, and weld the horizontal sealing plate of the lock opening to the side of the adjacent extension steel pipe and the top of the lock opening steel pipe pile respectively; (6) Install the vertical steel plate II on the water-facing side, and weld the vertical steel plate II on the water-facing side to the side of the adjacent extension steel pipe and the top of the vertical steel plate I on the water-facing side respectively; (7) Install the vertical steel plate on the back side and weld the vertical steel plate on the back side to the side of the adjacent extension steel pipe and the horizontal sealing plate of the lock respectively; (8) Pour the second filling concrete II until it is flush with the top of the vertical steel plate on the back side.

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