Large diameter expanded base pile digging hole expanded base cast-in-place pile foundation design software Lily expanded base cast-in-place pile foundation
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In 2017, Beijing Baihe Company launched a new foundation design software for bored and expanded base cast-in-place piles (referred to as expanded base piles), and has now completed the calculation of bearing capacity and drawing of construction drawings. The expanded base pile foundation software is in response to the new requirements of Southwest Electric Power Design Institute, Central South Electric Power Design Institute, Northwest Electric Power Design Institute, East China Electric Power Design Institute, and North China Electric Power Design Institute of China Electric Power Engineering Consulting Group, to comply with the new development situation of the power industry, and at the same time to continuously improve Baihe Software has a pioneering and innovative spirit.
Pile foundation expansion pile foundation design software requirements contact Chen Yunzhi
Pile foundation expansion pile regulations
The expansion pile should be able to provide a large vertical bearing capacity at the pile end rock and soil layer, and Used when the bottom is suitable for expansion. Weak soil layers, collapsible or dissolvable soil layers, unstable caves, soil caves, goaf areas and soil layers that are prone to collapse during construction at the expanded end shall not be used as large-diameter expanded bottom pile foundations without treatment.
When the site is rich in groundwater, the surrounding buildings (structures) are densely packed, and precipitation may have adverse effects on the surrounding environment, it is appropriate to use bored piles with bottom expansion
When the groundwater level is below the bearing layer or the amount of groundwater When the hole is small and does not cause collapse, manual digging can be used to expand the base of the cast-in-place pile.
Reference Specifications
"/Technical Regulations for Large Diameter Expanded Base Cast-in-place Piles"
"/Technical Regulations for Design of Overhead Power Transmission Line Foundations"
"Technical Regulations for Construction Pile Foundations"
"Code for Design of Concrete Structures"
Expanded base cast-in-place pile foundation structure
The ratio of the diameter of the enlarged end to the diameter of the pile body (/) should not be greater than.
The bottom surface of the enlarged end is generally in the shape of a pot bottom, and the sagittal height should be () times the diameter of the enlarged end of the pile. When the bedrock surface tilts greatly, the bottom surface of the pile can be made into a step shape.
The slope of the side of the expanded bottom end (/) should not be greater than / for sandy soil / not greater than / for silt and clay soil / and not greater than / for pebble layer and weathered rock.
, the depth of the pile tip entering the bearing layer, silt, sandy soil, fully weathered, strongly weathered soft rock, etc., the height of the hypotenuse of the enlarged section is desirable, and not less than the diameter of the pile body. Pebbles, gravel soil, strongly weathered soft rock, etc. For hard rock, etc., the height of the hypotenuse of the enlarged section may be doubled and not less than that. At the same time, the depth of the pile tip entering the bearing layer should not be greater than twice the thickness of the bearing layer.
The expansion pile foundation design software has been developed and has been officially released. If you have such needs, please call Chen Gong of Beijing Century Lily Company
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