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Method for constructing inverted type foundation beam

A construction method and technology for foundation beams, which are applied in foundation structure engineering, construction, etc., can solve the problems of low cost and lack of specifications for large-scale inverted foundation beams, so as to facilitate on-site construction, prevent uneven settlement of buildings, and ensure foundation bearing capacity. force effect

Inactive Publication Date: 2012-12-05
JIANGSU HUAIHAI CONSTR GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no standardized method for the construction of large inverted foundation beams, especially on the premise of meeting the stress strength requirements, the method that can be easily constructed and has low cost needs further research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The construction method of the inverted foundation beam of the present invention will be described below with a specific embodiment. The foundation of the project is the inverted foundation beam of the raft foundation, the thickness of the bottom slab is 400mm, the height of the foundation beam is 1500-2100mm, the elevation of the bottom of the slab is -4.9m, the elevation of the deepest part of the beam bottom is -6.4m, and the groundwater level is about 1.5m. Level well point precipitation.

[0034] 1) Earthworks

[0035] The foundation is excavated by mechanical excavation to the level of the bottom of the raft slab, and 200 thick soil is reserved for manual shoveling. When the 1-7 axis of the foundation pit is excavated to the elevation, the axis is released in time and the beam groove is manually excavated. In order to make the excavation size of the foundation beam groove accurate, a cross-circle axis is set at the elevation of -3.5m by using the well point d...

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Abstract

The invention discloses a method for constructing an inverted type foundation beam. The method comprises the following steps of: (1) carrying out earthwork excavation and construction: (11) excavating to the position of a marked elevation on the bottom of a raft plate by using a machine, and leaving soil with the thickness of 200 mm for manual shoveling, (12) releasing an axis in time after the axial excavated soil of foundation ditches 1-7 reaches the marked elevation, and manually excavating a beam groove; (2) carrying out waterproofing work; (3) binding reinforced steel bars and putting the reinforced steel bars in the groove; and (4) carrying out concrete pouring and curing. With the adoption of the method disclosed by the invention, the bearing capacity of foundation can be ensured, the occurrence of uneven settlement of a building, caused by construction quality is prevented, and meanwhile, the method is easy in on-site construction.

Description

technical field [0001] The invention relates to a construction method of an inverted foundation beam, which belongs to the technical field of construction engineering. Background technique [0002] The rigidity of the upper structure of the inverted foundation beam is better, there is no soft soil layer, liquefiable soil layer or seriously uneven soil layer within the range of the foundation compression layer, and the linear stiffness of the foundation beam of the strip foundation under the column is greater than 3 times of the linear stiffness of the column At the same time, the distance between columns is not much different and the load is relatively uniform, and the base reaction force can be considered as a straight line distribution, so the inverted foundation beam is widely used in the foundation of some large buildings. However, there is no standardized method for the construction of large inverted foundation beams, especially on the premise of meeting the stress i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/00
Inventor 成军吴宝飞耿孝善孟广德杜百迎马威
Owner JIANGSU HUAIHAI CONSTR GROUP