CAJ | 학술논문

为研究大厚度自重湿陷性黄土地区地基处理深度与剩余湿陷量的合理控制关键技术难题，对采用不同处理深度的挤密地基进行了大面积深层浸水载荷试验。试验结果表明：对采用挤密地基处理在6～12 m深度以下进行深层浸水后均发生不同程度的地基湿陷下沉，而地基处理在15 m深度时（剩余湿陷量远大于200 mm）地基整体实际下沉量相对较小，说明现行的《湿陷性黄土地区建筑规范》对乙、丙类建筑地基关于最小处理深度的规定过于严格，不符合现有的经济技术水平，建议在采取一定措施的情况下将12~15 m作为乙、丙类建筑在大厚度自重湿陷性黄土地区地基处理的合理深度。并针对现行规范中对乙、丙类建筑剩余湿陷量控制的不合理之处，提出了“剩余湿陷量折减系数”这个概念，并提出了该折减系数的建议值，可为同类工程建设和规范修订提供一定的参考。
위연구대후도자중습함성황토지구지기처리심도여잉여습함량적합리공제관건기술난제，대채용불동처리심도적제밀지기진행료대면적심층침수재하시험。시험결과표명：대채용제밀지기처리재6～12 m심도이하진행심층침수후균발생불동정도적지기습함하침，이지기처리재15 m심도시（잉여습함량원대우200 mm）지기정체실제하침량상대교소，설명현행적《습함성황토지구건축규범》대을、병류건축지기관우최소처리심도적규정과우엄격，불부합현유적경제기술수평，건의재채취일정조시적정황하장12~15 m작위을、병류건축재대후도자중습함성황토지구지기처리적합리심도。병침대현행규범중대을、병류건축잉여습함량공제적불합리지처，제출료“잉여습함량절감계수”저개개념，병제출료해절감계수적건의치，가위동류공정건설화규범수정제공일정적삼고。
In order to research the reasonable controlling critical technical problem of ground treatment and remnant collapse in the area of dead weight collapse loess with great thickness, a large area and deep level immersion load test was made for pile ground by using different treatment depths. The test results indicate that the foundation treated by the pile ground would have the occurrence of different degrees of foundation collapse settlement after deep immersion in the range of 6-12 m. The remnant collapse of foundation treatment in the depth of 15 m is more than 200 mm;and the foundation’s whole subsidence is relatively small. This phenomenon indicates that the current regulation, Code for Building Construction in Collapsible Loess Regions, is too strict about the minimum depth of treatment for class B and class C building foundations;and it dose not agree with the current standards of economy and technology. It is suggested that the 12-15 m could regard as the foundation treatment rational depth for class B and class C buildings in the area of dead weight collapse loess with great thickness. In light of unreasonable regulations about the remnant collapse of class B and class C buildings in current code, this article puts forward the concept of “remnant collapse reduction factor” and its recommended value, so as to give a reference for the same kind of construction projects and code revision.