Bedding rock surface bridge steel pipe support foundation and treatment method thereof

A technology of bridge foundation and treatment method, which is applied in infrastructure engineering, excavation, construction, etc., and can solve problems such as long construction period of mechanical drilling, high safety risk of manual drilling, and loose rock surface

Pending Publication Date: 2020-07-28
CHINA FIRST HIGHWAY ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The safety risk of manual digging is high, and the efficiency of pile formation is low. Explosive excavation with pyrotechnics may easily cause rock surface loosening
[0004] 2. The construction period of mechanic

Method used

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  • Bedding rock surface bridge steel pipe support foundation and treatment method thereof
  • Bedding rock surface bridge steel pipe support foundation and treatment method thereof
  • Bedding rock surface bridge steel pipe support foundation and treatment method thereof

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Embodiment Construction

[0031] see Figure 1-5 , the present invention provides a technical solution: a bridge steel pipe support on the bedding rock surface, including a platform 2, the top pin of the platform 2 is connected with a micro pile 3, and the bottom of the platform 2 is fixedly installed with a steel pipe 1. A cable 4 is fixedly installed on the bottom of the platform 2 , concrete 5 is poured inside the micro pile 3 , and a support rod 6 is fixedly installed inside the concrete 5 through a connector 7 .

[0032] A method for treating the foundation of a bridge on a bedding rock surface, including the load of the upper column of the support, which is distributed to the micro-pile through the cap 2, and then transferred to the stable bedrock by the micro-pile 3. On the other hand, the micro-pile 3 is pinned in series It can play the role of retaining and anti-sliding reinforcement for unstable slopes. The operation steps are as follows:

[0033] S1. Work before hole formation: measure and ...

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Abstract

The invention discloses a bedding rock surface bridge steel pipe support foundation and a treatment method thereof, and relates to the technical field of support foundation treatment methods. The bedding rock surface bridge foundation treatment method comprises the steps of S1, work before hole forming, S2, anchor cable hole drilling, S3, anchor cable lowering, S4, tension reaction beam and anchortool mounting, S5, load application, S6, load holding, and S7, unloading. According to the bedding rock surface bridge foundation treatment method, main ribs tops are subjected to pre-bending treatment before bearing platform steel reinforcing ribs are bound, the steel reinforcing rib anchorage capacity and bearing platform punching-resisting capability can be improved, based on the anchor cableframe beam principle, a jack is used for exerting tension force to a steel strand, whether the micro pile stress condition is consistent with calculation or not is verified, a seamless steel pipe is adopted for following so as to carry out micro pile hole drilling construction, it is ensured that a micro pile does not incline on a bedding rock surface, the pile can be formed completely, and hole collapses do not exist, the good effect is achieved in the complex flysch stratum, the micro pile adaptation of the flysch stratum is verified, and the method is simple, economical and convenient.

Description

technical field [0001] The invention relates to the technical field of support foundation treatment methods, in particular to a bridge steel pipe support foundation on a bedding rock surface and a treatment method thereof. Background technique [0002] Raw anti-slide pile foundation: Through the bearing capacity of the pile, the load is transmitted to the stable rock formation. There are two methods of pile formation: manual digging and mechanical drilling. [0003] 1. The safety risk of manual digging is high, and the efficiency of pile formation is low. Explosive excavation using pyrotechnics may easily cause rock surface loosening. [0004] 2. The construction period of mechanical hole forming is relatively long, and large-scale equipment is required to cooperate with the construction, which has strict requirements on the site, and the construction cost is high and uneconomical. Contents of the invention [0005] The purpose of the invention provided by the present inv...

Claims

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Application Information

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IPC IPC(8): E02D27/12E02D27/14E02D17/20
CPCE02D27/12E02D27/14E02D17/207
Inventor 王冬恒危志豪严少发魏刚毛志刚翟海彬南维州姬东东
Owner CHINA FIRST HIGHWAY ENG
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