Closed channel steel cofferdam assembled at an inclination angle

A steel cofferdam and standard technology, applied in construction, sheet pile walls, foundation structure engineering, etc., can solve problems such as limited service life, premature deformation, shortened service life of U-shaped combined base and U-shaped combined upper seat, etc., to achieve The effect of improving the water pressure resistance

Active Publication Date: 2021-01-01
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the outer surfaces of each plane wall panel and inclined plane wall panel have to bear a lot of water pressure, it is obvious that the plane wall panels can resist the water pressure only by connecting the vertical insert plate of the U-shaped combined upper seat and the fixing groove of the U-shaped combined base. Very difficult
Moreover, the vertical inserting plate is a plate-shaped part, which has poor compressive resistance, and the water pressure provides a large torque to the pressure of the plane wall plate from the top to the bottom. Image 6 The middle C part is prone to premature deformation and scrap due to excessive water pressure, which greatly limits its service life
At the same time, due to the fluctuating nature of the water flow, repeated pushing of the plane wall will cause Image 6 The middle C part swings left and right, which further shortens the service life of the U-shaped combined base and U-shaped combined upper seat

Method used

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  • Closed channel steel cofferdam assembled at an inclination angle
  • Closed channel steel cofferdam assembled at an inclination angle
  • Closed channel steel cofferdam assembled at an inclination angle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: as figure 1 with figure 2 The enclosed standard channel steel cofferdam assembled at the inclination angle shown, the steel cofferdam includes a U-shaped combined base and a U-shaped combined upper seat.

[0038] from figure 1 with figure 2 It can be seen that the U-shaped combined base is a U-shaped combined base composed of a rear fixed seat, a side fixed seat and an inclined plane fixed seat, and the rear fixed seat and the side fixed seats on both sides are vertically fixedly connected together. The fixed seat and the side fixed seats on both sides are located in the riverbed area, and the side fixed seats and the inclined plane fixed seats on both sides are respectively hinged together through the lower pin shaft, and the inclined plane fixed seat matches the slope slope. The rear fixing seat, the side fixing seat and the upper side of the inclined plane fixing seat of the U-shaped combined base are respectively provided with fixing slots. In ...

Embodiment 2

[0055] Embodiment 2: in embodiment 1 basic row, adopt again as Figure 12 In the structure shown, side wall columns are set between adjacent plane wall panels or between some adjacent plane wall panels, vertical concave areas and vertical convex areas are respectively set on both sides of the side wall column, and the side wall column The bottom of the side wall is provided with a horizontal protruding area, and the side wall column is fixed in the movable slot of the U-shaped combination upper seat through the horizontal protruding area. The outgoing regions are chimerically connected with each other. There are studs vertically fixed on the upper side of the side wall column and corner column, and a U-shaped top connecting plate is matched and set on the upper side of the corresponding plane wall plate. The U-shaped top connecting plate is provided with perforations, and each perforation is matched with the corresponding The studs are set together and fixed to the studs by l...

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PUM

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Abstract

The invention discloses a closed channel steel cofferdam assembled by inclination angles. The closed channel steel cofferdam comprises a U-shaped combined base and a U-shaped combined upper seat. a rear fixing seat of the U-shaped combined base is vertically and fixedly connected with side fixing seats on the two sides; the fixing base and the side fixing bases on the two sides are located in a riverbed area, the side fixing bases on the two sides and a bevel fixing base are hinged together through lower pin shafts respectively, the bevel fixing base is matched with a slope, a fixing clampinggroove is formed in the upper side of the U-shaped combined base, and the lower side of the U-shaped combined base is attached to the riverbed and the slope through a bag-shaped ground mat. Self-adjustment can be achieved according to different inclined plane angles to adapt to different construction environments, the requirements of most construction are met, the cofferdam is assembled accordingto the actual construction requirements, the negative pressure principle and the water pressure principle are utilized, the space is tighter, installation is easy, dismounting is convenient, the construction strength is reduced, and the stability and integrity of the cofferdam are improved.

Description

technical field [0001] The invention belongs to the technical field of construction of mechanical buildings, and in particular relates to a steel cofferdam of a closed standard channel assembled at an inclination angle. Background technique [0002] Most of the steel cofferdams used at home and abroad mainly consider the stability of the structure and analyze the stress of each part, while ignoring the flexibility and effectiveness of the design for various complex terrains. In terms of water channel maintenance technology, for water channels made of stone or cement that are not easy to drill, have limited load bearing, and the underwater buildings where the construction site is relatively hard, traditional mud-bound soil and rock cofferdams, cement jet grouting pile cofferdams , Weir surrounded by woven bag sand and other structures are unstable, the construction and demolition process is complicated, the cost is high, the load is too large, the environmental pollution is s...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): E02D19/04E02D5/04
Inventor许新勇聂相田谢晨龙许文杰
OwnerNORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER