紧邻建筑的软基高填方工程若干问题与技术对策

Analysis and countermeasures of construction of high filling embankment next to buildings on soft ground

软土地基上紧邻重要建构筑物进行高填方人造假山等工程建设存在诸多岩土工程技术问题。结合上海某植物园建设中的软基高填方工程实例,分析阐述了该类工程建设中存在的岩土工程关键技术问题。针对大面积堆土对邻近建筑的影响、紧邻建筑的高填方支挡、建筑结构与邻近高填土的无缝衔接等工程技术要求,提出了考虑结构与填土相互影响的时空效应以及采用桩承式加筋土复合支挡结构和桩承式高填方加筋陡坡的综合处理方案,在工程实施中取得了良好的效果,可供同类工程建设借鉴和参考。

Many geotechnical problems were encountered during the construction of high filling embankment on soft ground when next to buildings. Based on the construction of high filling embankment on soft ground which was next to building in Shanghai Chen Shan Botanical Garden,the paper describes the key problems encountered during the construction. The paper presents the solutions to the reduction of construction of high fillings' impact on the adjacent buildings,the design of retaining wall between the high fillings and buildings and the construction procedure of high fillings. An innovative retaining wall with pile-supported composite foundation and geogrid-reinforced fillings,which considering the time-space effect,was proposed and successfully applied in the project.