CAJ | 학술논문

针对传统袖阀管注浆法的跑浆串浆现象以及在地基中产生明显的挤土效应问题，提出了双阀布袋袖阀管注浆法，即在常规袖阀管外套上高强纺织土工密封布袋，并在外侧固定配有阀门的塑料排水板；结合梅汕高速公路工程现场试验，探讨了双阀布袋袖阀管注浆法的应用对桥台、路基变形及孔隙水压力的影响。结果表明：双阀布袋袖阀管注浆法可以有效控制串浆跑浆现象，注浆间歇期各深度孔隙水压力消散较快，挤土影响范围可控制在6m 左右且持续时间相对较短；运营期加固处理工程不宜直接设置塑料排水板。
침대전통수벌관주장법적포장천장현상이급재지기중산생명현적제토효응문제，제출료쌍벌포대수벌관주장법，즉재상규수벌관외투상고강방직토공밀봉포대，병재외측고정배유벌문적소료배수판；결합매산고속공로공정현장시험，탐토료쌍벌포대수벌관주장법적응용대교태、로기변형급공극수압력적영향。결과표명：쌍벌포대수벌관주장법가이유효공제천장포장현상，주장간헐기각심도공극수압력소산교쾌，제토영향범위가공제재6m 좌우차지속시간상대교단；운영기가고처리공정불의직접설치소료배수판。
In order to solve the problem of the grout loss and leaking and the soil compacting effect in foundation by the traditional sleeve-valve-pipe grouting method,the bivalve sack sleeve-valve-pipe grouting method was put forward.The improvement of the new method included that high-strength textile seal sack for soil engineering covered the conventional sleeve-valve-pipe,and plastic drainage plate with valve was fixed on the outside.According to the field test on Mei-Shan expressway construction,the effects of the application of bivalve sack sleeve-valve-pipe grouting method on bridge abutment,subgrade deformation and pore water pressure were discussed.The results show that the improved method can prevent the grout loss and leaking,pore water pressures for different depths of grouting holes dissipate fast,and the influence range of soil compacting effect is about 6 m and the duration is short;plastic drainage plate is unfavorable for reinforcement treatment engineering in operational period.