A Simultaneous Design and Construction Method of Bridge Pile Foundation and Surrounding Underground Structures
A technology for underground structures and construction methods, which is applied in infrastructure engineering, bridge construction, bridges, etc., can solve problems such as soil erosion of pile foundations, affecting the bearing capacity of bridge pile foundations, and achieve the effect of ensuring structural safety.
Active Publication Date: 2022-05-20
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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Problems solved by technology
When excavating large sections of underground structures, there will be problems such as unloading of the pier pile foundation in the foundation pit, soil loading during backfilling, and erosion of the pile foundation soil in rainy and snowy weather when the pile foundation of the pier is exposed. Will affect the bearing capacity of the bridge pile foundation
Method used
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Embodiment Construction
[0025] The bridge pile foundation and the surrounding underground structure synchronous design and construction method provided by the present invention, the method specifically includes the following steps:
[0026] 1) In the design stage of the pile foundation, adjust the force mode of the pile foundation to ensure that the bearing capacity of the pile foundation meets the design requirements when the foundation pit is excavated to the base;
[0027] 2) In the earthwork excavation stage, manual excavation is adopted for the earthwork near the pile foundation of the overpass bridge;
[0028] Earth excavation shall follow the principles of layered excavation, layered support, and symmetrical excavation;
[0029] The soil excavation strictly controls the excavation thickness of each layer, and then sprays surface support on the outside of the pile body;
[0030] Ensure that the soil excavation process avoids damage to the pile foundation and other adverse effects.
[0031] 3)...
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The invention relates to a synchronous design and construction method for a bridge pile foundation and surrounding underground structures. 1) In the pile foundation design stage, adjust the pile foundation force mode to ensure that the bearing capacity of the pile foundation meets the design requirements when the foundation pit is excavated to the base; Manual excavation; 3) In the earthwork backfilling stage, the backfill of the flexible structure is used to backfill the fertilizer tank, and the load on the upper part of the bridge is better transmitted, so that the stress is dispersed and the structure is protected; The deformation is monitored and measured, and corresponding countermeasures are formulated according to the changes of the monitoring data to ensure the safety of the project construction. The invention can realize the synchronous construction of the bridge pile foundation and surrounding underground structures, and ensures the structural safety of the bridge pile foundation during synchronous construction.
Description
technical field [0001] The invention belongs to the technical field of civil architecture design and construction, and in particular relates to a synchronous design and construction method for bridge pile foundations and surrounding underground structures. Background technique [0002] With the development of cities, the development of urban overpasses and underground space is growing day by day, and it has become a trend to promote the overall development of urban ground and underground. However, in the process of development, it is often accompanied by some problems. In order to realize the efficient use of urban space, some underground structures intersect with the plane and elevation of urban overpasses from time to time. When excavating large sections of underground structures, there will be problems such as unloading of the pier pile foundation in the foundation pit, soil loading during backfilling, and erosion of the pile foundation soil in rainy and snowy weather wh...
Claims
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IPC IPC(8): E01D21/00E02D27/12E01D19/02E02D17/18E02D15/02
CPCE01D21/00E02D27/12E01D19/02E02D17/18E02D15/02
Inventor 田周李鹏黄安平骆发江胡金库马冲李锋田勇孟锦张波孙愿军樊耿陈生杰朱晓锋
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD