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Settling control method of multi-pilot tunnel underneath bridge pile

A settlement control and tunnel technology, which is applied in the testing of infrastructure, construction, infrastructure engineering, etc., can solve problems such as building safety risks, and achieve the effects of saving grouting costs, reducing differential settlement, and enhancing operability.

Active Publication Date: 2016-12-07
BEIJING MUNICIPAL CONSTR
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method has certain risks to the safety of the building before the final settlement reaches stability

Method used

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  • Settling control method of multi-pilot tunnel underneath bridge pile
  • Settling control method of multi-pilot tunnel underneath bridge pile
  • Settling control method of multi-pilot tunnel underneath bridge pile

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Embodiment Construction

[0030] In order to enable those skilled in the art to better understand the technical solution of the present application, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The present invention integrates space and time effects, adopts regional unequal strength grouting and stage-by-stage monitoring, measurement and feedback construction methods, strictly controls the safety of bridge piles, controls the settlement rate of bridge piles, and decomposes the settlement of bridge piles into Deformation predictive control is carried out in different stages, and finally the safety of buildings such as bridge structures is guaranteed.

[0032] The invention provides a settlement control method for bridge piles under multi-pilot construction tunnels, the implementation process of which is as follows figure 1 shown, including the following steps:

[0033] In step S1, a plurality of monitoring points are arranged on...

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Abstract

The invention discloses a settling control method of a multi-pilot tunnel underneath bridge pile. The settling control method comprises the following steps: a monitoring point and a monitor are distributed on a field bridge pile; a multi-pilot tunnel is divided into different excavation areas; the percentages of influences on settling of the bridge pile by phased construction of the different excavation areas are obtained by a numerical value model and numerical value analysis software, and are multiplied by respective corresponding engineering standard values and added with analogy engineering experience values to obtain control numerical values in all construction phases; settling numerical values of the different excavation areas are obtained by using numerical value analog computation, and are used for determining grouting reinforcing areas with different grades; the grouting reinforcing areas with different grades are reinforced before excavation; field monitoring data is acquired in the field excavation process, and is compared with the control numerical values of all the construction phases; and the grouting intensity and the construction speed are adjusted according to real-time comparing results of the two. The settling control method can control the different settling, the total settling and the settling speed to guarantee the building safety.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a method for controlling settlement of bridge piles under tunnels with multiple pilot tunnels. Background technique [0002] With the increase of underground engineering projects in major cities, especially in the current domestic infrastructure construction environment, Beijing, Shanghai and other cities have planned a large number of underground tunnel engineering projects. Overpass bridges are widely used in urban traffic at this stage, and many tunnel constructions inevitably have to pass through bridge piles. At present, there are two main methods to control the settlement of bridge piles during the construction process of underpassing bridge piles: [0003] The first is the method of controlling the total settlement of bridge piles. This method employs no local reinforcement for differential settlement. [0004] The second is the method of controlling the tota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/12E02D33/00
CPCE02D27/12E02D33/00
Inventor 连新增王海涛黄明利李建华谢伟东王建设王渭张旭潘政卜志强郭水
Owner BEIJING MUNICIPAL CONSTR
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