浅谈换土垫层的质量控制

以山西高速公路大同管理中心办公楼工程为例，较为详细地介绍了换土垫层的质量控制。为提高地基承载力，该工程采取了基础人工回填砂砾换填法，工程实践说明采用此方法施工经济可行。

Talking about the Quality Control of Underlayer Replacement

Taking the engineering of the office building of Datong Superhighway Administration Center as the example, this paper makes more detailed introduction of the quality control of underlayer replacement. In order to increase the bearing capacity of the foundation, this engineering adopts the replacement method of backfilling sand and gravel into the foundation, and the engineering practice demonstrates that this method is economic and feasible.