混凝土填芯管桩水平承载性状影响的试验研究

An Experimental Study on Horizontal Bearing Capacity of Filled Core Pipe Piles

针对通过加大桩径,提高桩周上部土体的硬度,提高桩身混凝土强度等方法来提高管桩的水平承载能力,会大大提高工程成本的问题。研究采用不同强度混凝土填芯及填芯截面来提高管桩水平承载性能。研究结果表明:混凝土填芯可提高管桩水平承载能力,填芯强度越高,管桩水平荷载作用下桩顶位移呈降低趋势,管桩水平承载力特征值呈增高趋势。

In view of the greatly increased project cost as a result of increasing the pile diameter as well as the concrete intensity to strengthen the horizontal bearing capacity of the tubular pile, an experimental study has been made on the improvement of its horizontal bearing performance by using different concrete filling cores and core sections of different degrees of intensity. The experimental results show that the concrete filled cores help to improve the level of pile bearing capacity, with the core strength increasingly higher, the pile top displacement of the pipe piles under horizontal load showing a decreasing trend, while the characteristic value of pipe pile horizontal bearing capacity showing an increasing trend.