Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
What are the requirements of the steel space frame project on the foundation structure? SAFS Steel Structure Engineering Co. Ltd. will take you to know about it.
The total elimination of the adverse effects of liquefaction subsidence of the foundation soil layer on the steel structure building can be based on the use of one of the following countermeasures:
1. When using data encryption methods, such as vibro-punching, sand-pile squeezing and compacting, etc., the structural reinforcement of foundations shall be resolved to the lower page of the deeper layer of liquefaction of the soil, and the average error in the number of standardized penetration whacks of the resolved soil layer shall be more than the critical point of liquefaction of the soil layer.
2. When a deep foundation is used, the bottom edge of the foundation shall be buried in the smooth soil layer below the liquid man’s depth, which shall not be less than 500mm.
3. When pile foundation is adopted for steel structure building, the length of the pile end extending into the following smooth soil layer in the deep liquefied layer should be measured clearly according to the bearing capacity of the pile and should not be lower than the following standard value, clearing all liquefiable soil layers within the scope of the mattress bedding layer of the foundation of the high-rise building.
In the case of steel space frame application, it is necessary to pay attention to more difficulties in the raw materials and some key points of the construction of the building project.
The general provisions of the steel space frame building foundation, the foundation of the same structural unit, it is not suitable for part of the pure natural foundation, part of the manpower foundation, and it is not suitable for the two major types and above the characteristics of the soil layer is very different, as the ground for its mattress bedding layer, when the steel structure building high-rise building foundation bottom version or the pile end is close to the top of the skewed wall of the lower lying soil layer or part of the way into it, it is desirable to aggravate the foundation or to increase the length of the pile, so that the foundation bottom or the pile end of the foundation all in the same under lying room, in order to prevent the disproportionate foundation settlement which is very likely to be produced and manufactured.
If a steel structure building site cannot bypass a river, lake, or embankment that is likely to move or crack in the event of a seismic event, it is necessary to take measures to stabilize the foundation in a purposeful manner, and to improve the restfulness of the foundation. If there is a liquefiable soil layer under the foundation bedding layer of a high-rise building in an earthquake-hazardous area, effective measures should be taken to remove the adverse effects of liquefaction of the soil layer on the upper structure.
