884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

胡小波¹，牛  磊^1,2，付  亮^1,2，時(shí)樹泉³
(1 天津城市建設(shè)學(xué)院，天津300384; 2 天津市軟土特性與工程環(huán)境重點(diǎn)實(shí)驗(yàn)室，天津300384; 3 中國中鐵電氣化局一公司，石家莊050010)

[摘要] 利用大型沖擊碾壓機(jī)械進(jìn)行現(xiàn)場(chǎng)壓實(shí)試驗(yàn)，根據(jù)不同碾壓遍數(shù)下的路基沉降量、于密度以及彎沉值的測(cè)試結(jié)果，得出以上三個(gè)路基評(píng)價(jià)控制標(biāo)準(zhǔn)與碾壓遍數(shù)之間的關(guān)系，進(jìn)而得出最佳碾壓遍數(shù)。此外，根據(jù)拆房土不同虛鋪厚度下評(píng)價(jià)控制標(biāo)準(zhǔn)的對(duì)比，同時(shí)進(jìn)行了沖擊補(bǔ)強(qiáng)試驗(yàn)測(cè)試，得出拆房土處理路基的最佳虛鋪厚度，進(jìn)一步驗(yàn)證了拆房土處理軟弱不良路基的適用性。
[關(guān)鍵詞] 軟弱不良路基；拆房土；沖擊碾壓；沖擊補(bǔ)強(qiáng)

Experimental study on open room soil and impaction compaction method for poor weak subgrade treatment
Hu Xiaobo¹, Niu Leil^1,2, Fu Liang^1,2, Shi Shuquan¹
(1Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin 300384, China; 2 Department of Civil Engineenng, Tianjin Institute of Urban Construction, Tianjin 300384, China; 3 First Engineering Co., Ltd. of China Railway Electrification Bureau Group, Shijiazhuang 050010, China)

Abstract: Based on field compaction test, according to the different compaction quantities of subgrade settlement, the dry density and testing results of deflection value evaluation, it obtains three subgrade compaction quantities and control standards, and the relationship between optimal compaction number of times. In addition, according to the contrast of the open room soil under different pseudo thickness control standard of evaluation, simultaneously has carried on the impact reinforcement experiment test, obtains the open room soil for subgrade treatment best pseudo thickness, further validated open room with poor weak subgrade soil the serviceability. provides reference for the similar projects in future.
Keywords: poor weak subgrade; open room soil; impact compaction; impact reinforce