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The behaviour of piled raft foundation in loose sandy soil
Journal of Physics: Conference Series Pub Date : 2021-08-31 , DOI: 10.1088/1742-6596/1973/1/012208
R. S. Al Masoodi 1 , A. M. Al Gharrawi 2 , H. H. Hussein 3
Affiliation  

The conducts of pile raft basis depend on piles, raft, as well as soil. When designing a pile group, it is expected that only the piles carry out the applied loading. No contribution is given to soils underneath the raft because of the complicated interacting amid the piles and their cap with soils. When the soil under the raft foundation shares carrying the applied loads, this interaction will increment the piled raft system’s bearing capability as well as decrease the settlements. To comprehend the piled raft system’s complicated conduct, testing for twenty-seven experimental models was done within loose sands with a load applied to the piled raft foundation via a compressing jack then the measurement was done using a loading cell. Wide parametrical examinations had been executed with the variables number of piles, pile length, raft dimension ratio. The soil under the raft contributed a certain percentage in carrying the applied weights in the piled raft foundation. Similarly, there is an increase in the loading taken via piles to the overall load executed on pile raft with the growth of the number of piles in the series, and there is a decrease in the share of the soil under the raft for the applied loads when there is increasing within the piles’ amounts. The increment within the piles’ lengths causes an increase in the soil’s share underneath the raft, and the maximum settlement of the piled raft system does not exceed 5% of the raft width in all cases.



中文翻译:

桩筏基础在松散沙土中的性能

桩筏基础的行为取决于桩、筏和土壤。在设计桩组时,预计只有桩才能承受外加荷载。由于桩和桩帽与土壤之间的复杂相互作用,对筏下的土壤没有贡献。当筏基下的土壤共同承受所施加的载荷时,这种相互作用将增加桩筏系统的承载能力并减少沉降。为了理解桩筏系统的复杂行为,在松沙中对 27 个实验模型进行了测试,通过压缩千斤顶将负载施加到桩筏基础上,然后使用加载传感器进行测量。已使用可变桩数、桩长、筏板尺寸比。筏下的土壤在承载桩筏基础中施加的重量方面贡献了一定的百分比。同样,随着系列桩数的增加,通过桩承受的荷载占桩筏上的总荷载增加,而筏下土壤对所施加荷载的份额减少当桩的数量增加时。桩长内的增量会导致筏板下方的土壤份额增加,并且在所有情况下,桩筏系统的最大沉降不超过筏板宽度的 5%。随着系列桩数的增加,通过桩承受的荷载相对于桩筏上的总荷载增加,而筏下土壤对所施加荷载的份额减少。在桩的数量内增加。桩长内的增量会导致筏板下方的土壤份额增加,并且在所有情况下,桩筏系统的最大沉降不超过筏板宽度的 5%。随着系列桩数的增加,通过桩承受的荷载相对于桩筏上的总荷载增加,筏下土壤对所施加荷载的份额减少。在桩的数量内增加。桩长内的增量会导致筏板下方的土壤份额增加,并且在所有情况下,桩筏系统的最大沉降不超过筏板宽度的 5%。

更新日期:2021-08-31
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