CAJ | 학술논문

针对普通真空预压法的真空度传递不足、孔隙水压力消散过慢、工期较长和深层土体加固效果欠佳等缺点，提出了分层插板真空预压法。采用无孔密封管通过密封接头直接与下层排水板连接而插入深层土体，与普通真空预压法模型桶试验的累积沉降量、真空度、孔隙水压力、抗剪强度、含水率和出水量等指标比较表明，上层土体的各项参数大致相等，但其下层土体的各项指标具有明显优势。分层插板真空预压法能够较好地将真空度传递到深层土体，加快孔隙水压力消散，缩短工期，并取得良好加固效果。
침대보통진공예압법적진공도전체불족、공극수압력소산과만、공기교장화심층토체가고효과흠가등결점，제출료분층삽판진공예압법。채용무공밀봉관통과밀봉접두직접여하층배수판련접이삽입심층토체，여보통진공예압법모형통시험적루적침강량、진공도、공극수압력、항전강도、함수솔화출수량등지표비교표명，상층토체적각항삼수대치상등，단기하층토체적각항지표구유명현우세。분층삽판진공예압법능구교호지장진공도전체도심층토체，가쾌공극수압력소산，축단공기，병취득량호가고효과。
The vacuum preloading method in hierarchical flashboard is proposed based on the common vacuum preloading method with the shortage of vacuum transfer inadequately, pore water pressure dissipation slowly, deep soil reinforcement badly and so on. Its trait is that insert the drain pipes into the deep soil by connect with the no holes tube. The main purpose is that can transfer the vacuum to the deep soil directly to improve the strengthening effect of deep soil and overcome the shortage of excessive vacuum vertical transmission losses. Compared with the physical indicators of common preloading model test and found that the upper soil's parameters roughly equal, but the parameters deeper soil is better than latter. It conclude that deeper soil can achieve more vacuum, the pore water pressure dissipation is accelerated, the construction period is reduced, and well reinforcement effect under vacuum preloading method in hierarchical flashboard.