基于三维控制模型的市政道路水泥混凝土路缘石铺设质量控制技术

方延刚

中铁十八局集团第二工程有限公司，河北 唐山  063000

摘要：为解决市政道路水泥混凝土路缘石铺设质量管理中存在的滞后问题，提高铺设质量，以某区域市政工程为依托，对路缘石铺设质量数据进行预处理，预设工程数据，构建路缘石的三维地质模型和实体模型，筛选与路缘石铺设质量相关的可靠性指标数据，以吸水率、抗折强度、抗压强度3个子系统简化可靠性指标选取流程；构建混凝土路缘石的铺设质量三维控制模型，由铺设质量模糊评价矩阵计算筛选后的铺设质量指标参数，将研究区域划分为质量合格和不合格区域，对不合格区域加大铺设质量控制指标的管理力度。分别采用未控制模型、缠绕控制模型、精密数字化控制模型和三维控制模型等控制路缘石铺设质量，并检测4种模型控制的路缘石的吸水率、抗折强度和抗压强度。结果表明：经三维控制模型控制路缘石的铺设质量后，路缘石的吸水率为5.5%，抗压强度和抗折强度分别为80、8 MPa，吸水率最小，抗压强度和抗折强度最高，路缘石的铺设质量最好。

关键词：市政工程；路缘石；铺设质量；三维控制模型

Laying quality control technology of municipal road concrete kerbbased on three-dimensional control model

FANG Yangang

China Railway 18th Bureau Group Second Engineering Co., Ltd., Tangshan 063000, China

Abstract:In order to solve the lag problem existing in the quality management of cement concrete curb laying on municipal roads and improve the laying quality, based on the regional municipal engineering, the quality data of curb laying is preprocessed, and the engineering data is preset. The three-dimensional geological model and solid model of the curb laying is constructed, and the reliability index data related to the laying quality of the curb is screened. The selection process of reliability index is simplified by three subsystems of water absorption, flexural strength and compressive strength. A three-dimensional control model for the laying quality of concrete curb is constructed, and the selected paving quality index parameters are calculated by the fuzzy evaluation matrix of laying quality. The study area is divided into qualified and unqualified areas, and the management of control index is strengthened for the unqualified areas. The laying quality of the curb is controlled by the uncontrolled model, the winding control model, the precise digital control model and the three-dimensional control model. The water absorption rate, flexural strength and compressive strength of the four kinds of curb are tested. The results show that: after the laying quality of the curb is controlled by the three-dimensional control model, the water absorption rate of the curb is 5.5%, and the compressive strength and flexural strength are 80 MPa and 8 MPa, respectively. The water absorption rate is the smallest, the compressive strength and flexural strength are the highest, and the laying quality of the kerb is the best.

Keywords:municipal engineering; curb; laying quality; 3D control model