1、 l : 2010-07-26 “:SE1 S “( 50578017)Te: ( 1960- ) , o, , q,p V 3 =, E- mail: flymoonstone gmail. comb第31 卷 第4期2011年7月长安大学学报(自然科学版)Journal of Changpan University( Natural Science Edition)Vol. 31 No. 4Jul. 2011cI|: 1671-8879( 2011) 04-0022- 05 L # L+杨人凤,曾家勇,林 冬(v / ! L i, 710064)K 1:以陕蒙高速公路毛乌素沙漠风积沙为主要
2、研究对象,分析研究了该段风积沙的组成a主要特点和最大干密度的确定方法b通过重型击实试验绘制了风积沙击实特性曲线,揭示了风积沙的干压实和湿压实2种压实特性曲线;利用冲击振动复合压路机模型进行了实验室和现场压实试验,研究了风积沙在冲击振动作用下的压实特性,分析了风积沙冲击振动压实机理b结果表明:含水量对风积沙压实的最佳频率影响不大;冲击振动复合压路机对风积沙在天然含水量下的压实效果最好,优于单一的冲击和振动压路机b1oM:道路工程;风积沙;压实机理;冲击振动ms |: U 416. 166; U415. 521 DS : A Compacting mechanism and features of
3、 aeolian sandsYA NG Ren-feng, ZENG Jia-yong, LIN Dong( Key Laboratory for H ighway Construction Technology and Equipment of M inistry ofEducation, Changpan University, Xipan 710064, Shaanxi, China)Abstract: T aking the aeolian sands from Maowusu desert along Shanx-i Inner Mongolia highwayas the rese
4、arched object, this paper analyzes its pellet forms and main characteristics, as well asthe method of confirming the biggest dry density. According to the heavy compacting exper-iment, this paper draws the compacted curve, and receives that the aeolian sands have two com-pact conditions, dry and wet
5、. In the laboratory and field research, impaction-vibration rollermodel is used, the compacting features and the compacting mechanism in the impaction-vibrationsituation are researched. T he results show that the moisture content on aeolian sands have littleeffect on compacting, the impaction-vibrat
6、ion roller has better compacting results than a single v-ibration and shock roller. 4 tabs, 7 figs, 10 refs.Key words: road engineering; aeolian sand; compacting mechanism; impaction-vibration0 SEv 7?Z?, M=| u) b 7, u“ ,y EsC, u) AA 1v b R %aTa? c la +,T , L+a ZE - u y !$ %5 1-2bN, u) +a V L+Z a“d k
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10、9F y; T/, T qS, 2004, 32( 5) : 29-31.LI Tong-lu, LI Ping, ZHENG Shu-yan. Analytical so-lution of circle sliced method and its application inslope stability assessmentJ . Coal Geology , P ZL, , L !, V4,4 LTr qb( 5) T 0, = ,# L1 ,YV,h R W , P R ? 3M, ; R W., P 3M, F L; M aM,4 L b( 6) T Es v, V415 H z/
11、,730 HzP q,“a qM , ? P L | zrTb ID:References: 1 o B.rr M. 2.: Y, 2003. 2 (. M .: Y,2002. 3 r, . # L J.v:1 S, 2007, 27(1): 1-6.CH EN Zhong-da, LI Wan- peng. Vibratory parame-ters and vibratory compacting mechanism of eoliansand J. Journal of Changpan University: Natural Sc-ience Edition, 2007, 27( 1
12、) : 1-6. 4 JT G E40 ) 2007, r k? S. 5 r,f . X + J . Yv, 2001, 21( 3) : 1-4.CH EN Zhong-da, ZH ANG Deng-liang. The engineer-ing property about aeolian sand in T akalimakan J.Journal of Xipan H ighway University, 2001, 21( 3):1-4. 6 , +,7 4.c AKxr A/ 8 J.YS, 2008( 1) : 82-84.WANG Cao, CHAI H e-jun, YA
13、N Zong-ling. Sum-mary on subgrade filling technology using low-liquid-lim it silt J . Communications Standardization, 2008(1) : 82-84. 7 . a :S,CN02224615. 0P. 2003-04-02. 8 . L/ ! M .:S S/ , 2003. 9 C. L/ L?ZZ J. , 2004, 24( 5) : 4-7.SU N Zu-wang. Developing and prospectives of com-paction technology and machinery J . Road M achin-ery & Construction Mechanization, 2004, 24(5): 4-7.10 JT G B01) 2003, / SS .33第4期 雷晓锋,等:公路黄土边坡强度参数的选取及应用
