中文摘要：

以申苏浙皖高速公路为工程背景,对软土层未打穿的桩承式路堤进行现场实测研究。共选取2个管桩断面作为试验观测断面,在填筑时及填筑完成后对桩托板和桩间土上的土压力、路基沉降及下卧层沉降进行监测,并与软土层打穿时的实测结果作比较。研究表明：桩间距越大,桩体荷载分担比越小;软土层未打穿时荷载分担比为61.4%～75.5%,比打穿时小一些;软土层打穿与未打穿时的土拱高度都为桩托板净间距的1.0～1.4倍;软土层未打穿时桩土不均匀沉降比打穿时大;路堤填筑完成后的沉降约占总沉降的30.0%;下卧层沉降约占路堤总沉降的60.0%。将现场试验结果与4种理论方法的计算结果进行比较,评价各种方法的适用性。

英文摘要：

Taking Shen-Su-Zhe-Wan（SJZA） highway as engineering background, in-situ study of pile-supported embankment with pile partially penetrated in soft soils is carried out. Soil pressure acting on the pile splint and soil surfaces, settlements of embankment and subjacent bed are monitored in two tubular pile sections during and after land filling. The results are compared with those in-situ data when pile penetrates soft soils. It can be found that the load share ratio decreases as the pile spacing increases. The measured load-bearing ratios are 61.4% - 75.5% when pile partially penetrates soft soils, which are smaller than those measured when pile is penetrated in soft soils. Both soil arching heights are 1.0 - 1.4 times as large as the clear pile spacing. The measured differential settlements when pile is partially penetrated in soft soils are larger than those measured when pile penetrates soft soils. The settlements of embankment after land filling make up about 30.0% in total settlement. The settlements of subjacent bed make up about 60.0% in total settlement. Applicability of each method is evaluated by comparing in-situ test results and computing results of four theoretical methods.