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Reinforcing device for reinforcing bridge pier through cofferdam-free underwater enlarging section method and construction method thereof

A technology of increasing section and reinforcing device, applied in the direction of bridge reinforcement, bridges, bridge parts, etc., can solve the problems of high cost and high construction risk of cofferdams, and achieve the same thickness as the design, low cost, and guaranteed thickness. Effect

Pending Publication Date: 2019-10-18
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cofferdam pumping construction requires a large construction period, accounting for about 60% of the total construction period, and the cost of the cofferdam is high, and the construction is very dangerous

Method used

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  • Reinforcing device for reinforcing bridge pier through cofferdam-free underwater enlarging section method and construction method thereof
  • Reinforcing device for reinforcing bridge pier through cofferdam-free underwater enlarging section method and construction method thereof
  • Reinforcing device for reinforcing bridge pier through cofferdam-free underwater enlarging section method and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1-Figure 4 As shown, a reinforcement device for strengthening bridge piers by increasing the cross-section method without cofferdam underwater, including a formwork system 1 and a limiting device 2, the cross section of the bridge pier 21 is cylindrical, the shape of the formwork system 1 matches the shape of the bridge pier 21, and the formwork The system 1 is set outside the pier 21, and multiple formwork systems 1 are superimposed sequentially from bottom to top to cover the entire pier 21. The formwork system 1 located at the bottom is fixed on the abutment 22, and the adjacent formwork systems 1 are realized by bolts I10. Seamless connection, each formwork system 1 and the pier 21 are provided with a limit device 2, the limit device 2 matches the shape of the pier 21, the inner side of the limit device 2 is fixed on the outer surface of the pier 21, the limit The outside of the device 2 is in contact with the formwork system 1 .

[0039] Such as ...

Embodiment 2

[0049] Such as Figure 5-7 As shown, the cross-sectional shape of the pier 21 in the second embodiment is oblong, and the overall cross-sectional shape of the corresponding formwork system 1 and the limiting device 2 is also oblong.

Embodiment 3

[0051] Such as Figure 8-10 As shown, the cross-sectional shape of the pier 21 in the third embodiment is a square, and the overall cross-sectional shape of the corresponding formwork system 1 and the limiting device 2 is also a square.

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PUM

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Abstract

The invention discloses a reinforcing device for reinforcing a bridge pier through a cofferdam-free underwater enlarging section method. The device comprises template systems and limiting devices, wherein the template systems are matched with the bridge pier in shapes, the template systems are arranged outside the bridge pier in a sleeving mode, the plurality of template systems are sequentially overlapped from bottom to top so as to cover the whole bridge pier, the template system located at the bottommost part is fixed on a bridge table, the adjacent template systems are seamlessly connectedthrough bolts I, the limiting devices are arranged between every template system and the pier, the limiting devices are matched with the bridge pier in shapes, the inner sides of the limiting devicesare fixedly installed on the outer surface of the bridge pier, and the outer sides of the limiting devices are in contact with the template systems. According to the device, the template systems andthe limiting devices can be used for construction of the cofferdam-free underwater enlarging section method for reinforcing circular, rectangular or other shape bridge piers or columns, the construction speed is high, the cost is low, and the thickness of a reinforced layer concrete can be effectively ensured to coincide with the design.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a reinforcing device and a construction method for reinforcing bridge piers by the method of increasing the cross-section underwater without cofferdams. Background technique [0002] At present, domestic bridge piers have been eroded and scoured by flowing water for a long time, and the pier body structure needs to be reinforced. The commonly used reinforcement method is mainly to increase the section size reinforcement method, and the construction technology is mainly to use the traditional cofferdam pumping. In the construction of reinforcement method of increasing section size, the position of the peripheral mold must be limited, so that the core concrete is in the center position, and the thickness of the reinforcement layer is guaranteed to be consistent. The cofferdam pumping construction requires a large construction period, accounting for about 60% of the total construct...

Claims

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Application Information

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IPC IPC(8): E01D22/00E01D19/02
CPCE01D22/00E01D19/02
Inventor 黄海林陈思程姜德文祝明桥徐昌慧
Owner HUNAN UNIV OF SCI & TECH