山区农村公路波形护栏立柱施工质量问题及其对策

Quality Problems and Countermeasures of Wavy Guardrail Column Construction on Rural Road in Mountainous Area

摘要: 为研究山区农村公路波形护栏立柱插入深度问题，通过查阅施工资料、现场踏勘等手段，采用弹性波法，结合现场拔桩法，对公路波形护栏施工中立柱插入深度问题展开研究，主要结论：(1)总结归纳了2017年农村多条农村道路波形护栏的数据检测，质量缺陷最大主要表现为波形护栏立柱埋置深度，合格率仅为25%，其次是波形梁板基底金属厚度、波形护栏立柱壁厚和波形梁横梁中心高度，其合格率在40%左右，并对这些质量问题产生的原因展开了分析；(2)提出了从施工方案、材料检测方法以及过程检测管理等方面的应对措施，并对2020年农村公路波形护栏检测，其中波形护栏立柱埋置深度合格率提升为82%，其他方面基本达到合格标准，验证了所采用措施的有效性。

Abstract: In order to study the depth of column insertion of corrugated guardrail on rural highway in mountainous areas, by consulting construction data, site survey and other means, elastic wave method combined with site pulling pile method was used to study the depth of column insertion in the construction of corrugated guardrail on highway. The main conclusions are as follows: (1) The data detection of a number of rural road waveform guardrail in 2017 is summarized, the biggest quality defect is mainly manifested as the depth of the waveform guardrail column embedding, and the pass rate is only 25%, followed by the thickness of the waveform beam plate base metal, the wall thickness of the waveform guardrail column and the center height of the waveform beam, with a qualification rate of about 40%. The causes of these quality problems are analyzed. (2) This study puts forward countermeasures from the aspects of construction scheme, material testing method and process testing management. Through the detection of corrugated guardrail on rural highway in 2020, it is concluded that the qualification rate of the embedded depth of the corrugated guardrail column has increased to 82%. And other aspects basically met the qualified standard, verifying the effectiveness of the adopted measures.