挤扩支盘桩与直孔桩的对比试验研究

Comparative Experimental Study on Piles with Branches and Plates and Column Piles

针对挤扩支盘桩相对于普通等截面直孔灌注桩具有较高承载力和较低沉降量的特性,采用自平衡静载荷试验方法,对浙江嘉兴某工程同场地中的挤扩支盘桩与普通等截面直孔灌注桩进行承载力和沉降的对比试验研究。工程试验结果表明,在同等工程地质条件下,采用挤扩支盘桩能提高承载力,减少沉降和缩短桩长,具有良好的经济效益。

Comparing with column bored pile, pile with branches and plate is a new type of pile with higher bearing capacity and lower settlement. Field comparative tests related to bearing capacity and settlement of both piles with branches and plates and column piles at the same sites in Jiaxing city were studied through self-balanced method under static pressure. The result testifies that piles with branches and plates can obtain better economic benefit under the same geological conditions, such as increasing pile bearing capacitv and reducing settlement and pile length.