Arch bridge foundation used on bad geological conditions and construction method of arch bridge foundation

A technology of geological conditions and construction methods, applied in the direction of basic structure engineering, bridges, bridge parts, etc., can solve the problems of difficult construction, poor construction safety, increased concrete amount and soil excavation, etc., and achieve simple construction and horizontal rigidity Enhance and increase the effect of safety and economy

Active Publication Date: 2013-07-24
CHINA RAILWAY ENG CONSULTING GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is that the prior art method for arch bridge construction with poor geological conditions will not only greatly increase the amount of concrete used and the amount of excavation of soil, but also the construction is difficult and the construction safety is poor

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  • Arch bridge foundation used on bad geological conditions and construction method of arch bridge foundation
  • Arch bridge foundation used on bad geological conditions and construction method of arch bridge foundation
  • Arch bridge foundation used on bad geological conditions and construction method of arch bridge foundation

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Embodiment Construction

[0038] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] Such as figure 1 As shown, the present embodiment provides an arch bridge foundation for poor geological conditions, which includes an abutment 1 and a well-dug foundation 2, the abutment 1 is a concrete structure, and the lower surface of the abutment 1 is connected to the excavation Well foundation 2, the lower surface of the abutment 1 is larger than the section of the well-digging foundation 2, the inner side of the abutment 1 is provided with a miter surface 3, and an arch foot 5 is connected to the miter surface 3, the arch The foot 5 is perpendicular to the beveled surface 3 so that the abutment 1 can better support the pressure transmitted by the abutment 5 ....

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Abstract

The invention relates to an arch bridge foundation used on bad geological conditions. The arch bridge foundation comprises an arch seat and a well digging foundation. The lower surface of the arch seat is connected with the well digging foundation. An oblique connecting face is arranged on the inner side of the arch seat and is connected with an arch foot. A construction method of the arch bridge foundation used on the bad geological conditions comprises the following steps: forming an oblique slope and a flat base face by digging; forming an outer wall structure of the arch seat; sinking the outer wall structure of the arch seat for place taking; digging and placing concrete to the well digging foundation; and carrying out pouring in the outer wall structure of the arch seat, and completing the whole structure of the arch seat. According to the design of the well digging foundation, horizontal rigidness is greatly improved, vertical force can be borne, horizontal component resistant capacity of the arch seat is greatly increased, stress safety is guaranteed, construction is simple, safety risk is low, the using amount of concrete is greatly lowered, and safety and economy of the arch seat structure are increased.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to an arch bridge foundation for poor geological conditions. Background technique [0002] An arch bridge refers to a bridge with an arch as the main load-bearing member of the superstructure in the vertical plane. The weight of the arch bridge is mainly borne by the main arch ring, which transmits the force to the arch bridge foundation in the form of axial force through the main arch ring. The requirements for geological conditions are relatively high. Under normal circumstances, it is advantageous to build an arch bridge in an area with good geological conditions where the surface soil layer is stable and the basic bearing capacity of the foundation is above 500kPa; When arch bridges are built in areas with poor conditions, how to effectively support the abutment to resist the horizontal force component is the key to the design of the arch bridge. The existing arch bridge str...

Claims

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Application Information

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IPC IPC(8): E01D19/00E01D21/00E02D27/14
Inventor 徐升桥彭岚平张华夏晓东高策
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD
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