不同厚度红砂岩填土中夯击能量的消耗规律研究  

Study on the Consumption Law of Ramming Energy in Red Sandstone Soil of Different Thickness

作　　者：潘泽真 阳丹[1] 管升军 Pan Zezhen;Yang Dan;Guan Shengjun(School of Civil Engineering,Jiangxi University of Technology,Nanchang,Jiangxi 33009)

机构地区：[1]江西科技学院土木工程学院,江西南昌330098

出　　处：《江西建材》2018年第11期58-59,共2页Jiangxi Building Materials

基　　金：江西科技学院校级自然科学基金一般项目(16ZRYB07)

摘　　要：为了研究不同厚度红砂岩填土中夯击能量的消耗规律,利用不同夯击能对赣南地区红砂岩填土进行室内单点冲击试验。试验结果表明,土体的累计夯沉量随夯击能基本呈三阶段变化,即先快速增加、后缓慢增加、最后趋于稳定,夯击能的有效利用率呈现逐渐降低的趋势;不同厚度土体的最佳夯击能分别为100N·m、120N·m和140N·m,对应土体的夯沉量分别为18mm、32mm、53mm,均约占相应总夯沉量的二分之一;夯击能以竖向作用为主、水平影响为辅,且存在一定的影响范围。To study the consumption law of ramming energy in red sandstone soil of different thickness,the indoor single-point impact test is done on red sandstone soil of southern Jiangxi by using different tamping energy. The results show that the cumulative settlement rate of soil is basically the three stage change with tamping energy,that is,it first increases rapidly,then increases slowly,and finally tends to be stable,the effective utilization rate of ramming energy is decreasing gradually; The best tamping energy of soil of different thickness is 100 N·m,120 N·m and 140 N·m,respectively,the tamping settlement of the corresponding soil is 18 mm,32 mm and 53 mm,which account for 1/2 of the corresponding total settlement; The ramming can be supplemented by the vertical effect and the level influence,and there is a certain range of influence.

关 键 词：红砂岩填土 土层厚度 击数 夯击能 

分 类 号：TU472[建筑科学—结构工程]