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Maintenance device and method for bridge mass concrete foundation

A technology of mass concrete and concrete foundation, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as large temperature difference, and achieve the effect of reducing temperature difference

Pending Publication Date: 2022-04-12
上海先行建设监理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to improve the problem of large temperature difference between the bottom and the top of the concrete foundation, the application provides a maintenance device and method for the large-volume concrete foundation of the bridge

Method used

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  • Maintenance device and method for bridge mass concrete foundation
  • Maintenance device and method for bridge mass concrete foundation
  • Maintenance device and method for bridge mass concrete foundation

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Experimental program
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Effect test

Embodiment 1

[0048] The embodiment of the application discloses a maintenance device for a large-volume concrete foundation of a bridge. refer to figure 1 The maintenance device for the mass concrete foundation of the bridge includes a main body forming formwork 1 and a plurality of inner ring formwork units 2 located in the main body forming formwork 1 . Both the main body forming formwork 1 and the inner ring formwork unit 2 are in the shape of a square frame. In other embodiments, the main body forming formwork 1 can also be in the shape of a cylinder according to the shape requirements of the concrete foundation. The four side walls of the main body forming formwork 1 can be made of multiple Made of steel plates.

[0049] refer to figure 2 and image 3 , two inner ring template units 2 are provided, and the two inner ring template units 2 are arranged at intervals along the length direction of the main body forming template 1 . The inner wall of the main body forming formwork 1 an...

Embodiment 2

[0071] refer to Figure 6 and Figure 7 The difference between the second embodiment of the present application and the first embodiment is that the moisture in the concrete foundation will be lost during the opening process of the curing hole 21 , and the inner ring formwork unit 2 is provided with a humidity adjustment mechanism 5 .

[0072] refer to Figure 7 and Figure 8 The humidity adjustment mechanism 5 includes a water delivery pipe 51 connected to the inner wall of the inner ring formwork unit 2, a plurality of compressed air pipes 52 bound on the water delivery pipe 51, a plurality of nozzles 53 connected to the water delivery pipe 51 and used to control each The spray head 53 is a water spray control assembly 54 for spraying water, and the pinch plate 31 is provided with a through hole through which the water delivery pipe 51 passes. The nozzles 53 correspond to the maintenance holes 21 one by one, and the water outlets of the nozzles 53 face the maintenance hol...

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Abstract

The invention discloses a maintenance device and method for a large-volume concrete foundation of a bridge, and relates to the field of bridge construction. The maintenance device comprises a main body forming template and a plurality of inner ring template units located in the main body forming template; a main body forming cavity is defined by the inner wall of the main body forming template and the outer walls of the multiple inner ring template units, and the main body forming cavity is used for pouring and forming a concrete foundation; a heat dissipation groove is defined by the inner wall of the inner ring formwork unit, a temperature adjusting mechanism for adjusting the temperature of the concrete foundation is arranged in the heat dissipation groove, and a supporting piece for limiting deformation is arranged in the inner ring formwork unit. The concrete foundation has the effect of reducing the temperature difference between the bottom and the top of the concrete foundation, the risk that the concrete foundation cracks is reduced, and the quality of the concrete foundation is improved.

Description

technical field [0001] The present application relates to the field of bridge construction, in particular to a maintenance device and method for a large-volume concrete foundation of a bridge. Background technique [0002] Bridge foundations are used to carry piers and are generally made of mass concrete. In the pouring stage of mass concrete foundation, the uneven temperature field and temperature stress caused by heat of hydration can easily lead to multiple cracks on the surface and inside of the concrete structure, destroying the integrity of the concrete structure and reducing the durability of the structure. Temperature control during volumetric concrete construction is a key concern in bridge construction. [0003] The maintenance method of the existing bridge mass concrete foundation is usually as follows: use plastic film to cover the top of the concrete foundation to keep the temperature of the concrete surface, and regularly spray the concrete foundation to keep ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 袁晓洪危君安陈刚徐杰谈小良朱跃明荣国江李山红
Owner 上海先行建设监理有限公司
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