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Arch bridge thrust foundation structure and pouring method of arch bridge thrust foundation structure

A basic structure and basic technology, applied in basic structure engineering, arch bridges, bridges, etc., can solve problems such as inability to solve the cover layer, complex construction, poor economy, etc., to reduce construction difficulty, strong integrity, and ability to resist horizontal forces strong effect

Pending Publication Date: 2021-08-31
核工业西南勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these methods can solve the situation of deep covering layer, and at the same time, the economy is poor, the cost is high, and the construction is complicated

Method used

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  • Arch bridge thrust foundation structure and pouring method of arch bridge thrust foundation structure
  • Arch bridge thrust foundation structure and pouring method of arch bridge thrust foundation structure
  • Arch bridge thrust foundation structure and pouring method of arch bridge thrust foundation structure

Examples

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no. 1 example

[0040] see in conjunction figure 1 and figure 2 , this embodiment provides an arch bridge thrust foundation structure 100, which adopts a caisson + pile foundation structure, which is simple in construction and good in economy, and at the same time increases the overall stiffness of the foundation, making the structure safer and more reliable, and can be applied to the deep situation.

[0041]The arch bridge thrust foundation structure 100 provided in this embodiment includes a caisson foundation 110, an abutment 130, an arch rib 150 and a plurality of filling pile foundations 170, and a plurality of filling pile foundations 170 are arranged at the lower part of Into the foundation, the abutment 130 is set on the upper part of the caisson foundation 110, and the arch rib 150 is arranged on the abutment 130 to support the bridge body, and the caisson foundation 110 is used to bear the horizontal thrust transmitted by the arch rib 150, and the The pile foundation 170 is used ...

no. 2 example

[0060] see Figure 7 , the present embodiment provides a method for pouring an arch bridge thrust foundation structure 100, which is used to pour and form the arch bridge thrust foundation structure 100 as provided in the first embodiment. The pouring method includes the following steps:

[0061] S1: Drill holes on the foundation to form a plurality of pile foundations 170 .

[0062] Specifically, the bored pile foundation 170 is formed by using the drilling pouring method, and the concrete is poured after drilling holes on the foundation, and the pouring is stopped after reaching a predetermined height. It is convenient for the two to be closely connected when the caisson foundation 110 is subsequently formed. After the pile foundation 170 is formed, it needs to be backfilled with original soil, and then step S2 is performed.

[0063] It should be noted that, as a conventional pile foundation construction method, the borehole pouring method is less difficult to control, and ...

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Abstract

The embodiment of the invention provides an arch bridge thrust foundation structure and a pouring method of the arch bridge thrust foundation structure, and relates to the technical field of bridge construction. The arch bridge thrust foundation structure comprises an open caisson foundation, an arch support, an arch rib and a plurality of grouting pile foundations, and the multiple grouting pile foundations are arranged on the lower portion of the open caisson foundation. Through an open caisson and pile composite structure, the structural strength is improved. The open caisson foundation is an integral rigid foundation, the contact area with a foundation is large, the integrity is high, the rigidity is high, and the horizontal force resistance is large; and vertical pile foundations are high in vertical force resistance. According to the open caisson and pile composite foundation, the stress characteristics of the two structures are fully utilized, respective advantages are exerted, meanwhile, compared with full open caisson foundations, the construction difficulty is reduced, and economic benefits are improved; and compared with full vertical pile foundations, the overall rigidity of the foundation is increased, so that the calculation structure is safer and more reliable.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to an arch bridge thrust foundation structure and a pouring method for the arch bridge thrust foundation structure. Background technique [0002] The arch foot of the hingeless arch is fixed on the abutment (pier), and the overall structural rigidity is high. It is a structural form often used in long-span arch bridges. The thrust of the arch foot of the hingeless arch bridge is large, and the horizontal bearing capacity of the foundation bearing layer is high; the arch ring is a multi-stage statically indeterminate structure, which is sensitive to the displacement of the arch foot; it is often built in valley areas with good lithological conditions on both banks. [0003] There are many high mountains and deep valleys in Southwest my country, and long-span arch bridges have better adaptability to terrain conditions and higher economic efficiency, which has certain advan...

Claims

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Application Information

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IPC IPC(8): E02D27/32E02D27/14E02D27/20E02D5/34E01D4/00
CPCE02D27/32E02D27/14E02D27/20E02D5/34E01D4/00E02D2250/0023E02D2300/0029
Inventor 田萌石少华王约斌周勇曾应祝陈旖平阳瑞谭青林刁晓俊陈建锋黄枭许春雷张俊琦史海峰李木华赵启明
Owner 核工业西南勘察设计研究院有限公司