土工基础

›› 2018, Vol. 32 ›› Issue (1): 31-34.

• 工程实录 • 上一篇    下一篇

高填方填筑质量控制指标与影响因素研究

金 纯1，徐帮树1，杨来华2，连艳武2   

  1. （1.山东大学土建与水利学院，济南 250061;2.中铁十二局集团股份有限公司，太原 030024）
  • 收稿日期:2017-04-17 修回日期:2017-04-27 出版日期:2018-02-20 发布日期:2018-03-01
  • 作者简介:金 纯（1993-），硕士研究生，研究方向为岩土工程数值计算。
  • 基金资助:

    国家自然科学基金（No. 50909056）；山东省自然科学基金（No.ZR2014EEM014, ZR2014EEM029）

Quality Assurance and Controlling Factors for the Construction of High Fills

JIN Chun1, XU Bangshu1, YANG Laihua2, LIAN Yanwu2   

  1. (1.College of Civil and Irrigation Engineering, Shandong University, Jinan 250061;
    2.China Railway 12thBureau Group Co. Ltd., Taiyuan 030024)
  • Received:2017-04-17 Revised:2017-04-27 Online:2018-02-20 Published:2018-03-01

摘要： 对于山区机场高填方工程，重点是解决土石方填筑质量的问题。通过对干密度、压实度、固体体积率等不同填筑质量控制指标的讨论及其相互之间影响关系的分析，选择最合适的控制指标压实度作为检测依据。针对高度超过100 m的东侧填筑体，初步采用现场压实度、最大松铺厚度、平整度为压实质量控制指标。并根据工作面大小不同，应用振动和冲击两种碾压方式相结合的办法进行现场碾压试验，获得分层填筑厚度、碾压遍数及最佳含水量等施工参数。进而结合东侧填方检测区实测数据，运用三维GIS，从空间角度分析了各碾压参数、含水率与土料压实度的分布规律，并结合施工工艺解释了分布原因。

关键词: 填筑质量, 压实度, 检测标准, 强夯法

Abstract: The quality assurance and quality control of high fills are very important for the construction of airport in mountain areas. In a case study, the correlations between various quality control criteria and index properties, such as, dry density, degree of compaction and porosity, are discussed and the optimum quality control criteria are recommended. In the east side of the project area where the fill thickness exceeded 100 meters, the controlling factors were: degree of compaction, maximum loose layer thickness, and tolerable leveling fills. The trial fill blocks were tested by using impact and vibratory compaction methods respectively. The thickness of the fills, number of compactions and optimum moisture contents were obtained through the trial test blocks.

Key words: quality of fill operation, degree of compaction, test criteria, dynamic compaction