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Construction method of large-cross-section, porous, super-long and cast-in-place box culvert

A construction method and large-section technology, which can be used in construction, road bottom and other directions, can solve the problems of concrete construction impact, limited control range, reduced construction efficiency, etc., to improve construction flexibility and structure compactness, improve construction quality, The effect of improving construction efficiency

Active Publication Date: 2016-06-01
CITIC GUOAN CONSTR GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] At present, the traditional cast-in-place box culvert construction mainly uses fixed inner and outer sides to support the formwork, and a concrete pouring platform is set on the top of the outer formwork support device for concrete pouring construction. However, when the construction of large-section porous long-depth box culverts is performed, the control range of the concrete construction in the inner side of the outer operating platform is limited, which will affect the concrete construction in the middle of the large-section, and the long-depth box culvert The culvert requires continuous segmented construction, and the fixed single-side formwork method takes a long time from removal to installation, reducing construction efficiency

Method used

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  • Construction method of large-cross-section, porous, super-long and cast-in-place box culvert
  • Construction method of large-cross-section, porous, super-long and cast-in-place box culvert
  • Construction method of large-cross-section, porous, super-long and cast-in-place box culvert

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with accompanying drawing of description, but protection scope of the present invention is not limited thereto:

[0039] Such as Figure 1-3 As shown, the construction method of the large-section porous super-long cast-in-place box culvert of the present invention mainly comprises the following construction steps:

[0040] 1) Concrete and filling construction: pour foundation cushion 22, box culvert bottom structure layer 21 and box culvert bottom surface layer 20 at the design position in sequence according to the setting requirements, and fill soil on the periphery at the same time to obtain the external filling layer 23;

[0041]2) Laying of external steel backing plate 1: Before hoisting, set embedded holes at the designated position for laying external steel backing plate 1, hoist the external steel backing plate 1 to the vicinity of the design position, and place temporary block;

[0042] 3) Er...

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Abstract

The invention relates to a construction method of a large-cross-section, porous, super-long and cast-in-place box culvert.The method includes the steps of construction of concrete and filling soil, laying of an external steel base plate, erecting of an external bracing truss, erecting of an external steel formwork, erecting of an upper construction platform, laying of a rail beam, erecting of an internal support, erecting of an internal steel die, pouring of concrete and the like.According to the construction method, the whole supporting die system can be rapidly mounted, disassembling and assembling are convenient, no large-scale disassembling and assembling is needed, next segment of construction can be conducted only by movement of wheels, construction cost is lowered, and operability and flexibility of construction are improved.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method of a large-section porous super-long cast-in-place box culvert. Background technique [0002] Box culvert is a structural form widely used in municipal water supply and drainage projects and road engineering. According to the construction method, it can be divided into prefabricated box culvert and cast-in-place box culvert. Although the construction speed of cast-in-place box culverts has been improved, the construction process requires a large number of large-scale machinery, and the construction cost is relatively high, especially for large-section super-long box culverts, the transportation cost is also high. Therefore, at present, the cast-in-place method is generally used for large-section porous super-long box culverts. [0003] At present, the traditional cast-in-place box culvert construction mainly uses fixed inner and ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F5/00
CPCE01F5/005
Inventor 王新泉
Owner CITIC GUOAN CONSTR GRP CO LTD
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