A Study on LCC reduction technique for traffic infrastructure under the condition of antifreezing admixture usage

可以得出以下结论。(1)提出了考虑冬季道路交通状况的路面寿命周期成本评价模型。利用概率随机用户均衡（PSUE）的敏感性分析，提出了一种求解该模型的算法。由于路面表面状况恶化、夏季维修工程带来的通行能力变化、冬季防冻外加剂分散带来的通行能力变化等因素引起的驾驶员路线选择行为均在模型中内生表达。在此基础上，通过数值试验，得到了考虑驾驶员行为的全寿命周期成本最小的维修工程和抗冻液分散方案。(2)建立了路面状况、行车状况、天气信息等多种数据的综合数据库。以该数据库为例，解决了冬季路面状况与行车状况之间的关系，为交通管理者和道路使用者提供了有用的信息。这一结果表明了抗冻剂在多种情况下的有效性，并进一步阐明了抗冻剂效果消退的条件。(3)介绍了一个车辆模型的二维运动单元法（MEM）计算实例，验证了该方法可以成功地分析车辆与钢板之间的相互作用行为。对于连续结构在移动车辆荷载作用下的分析，MEM与传统的时域有限元法相比具有以下优点：(a) MEM可以在不受时间影响的情况下固定模型中的加载位置，而有限元法需要与车辆的移动范围相对应的大模型；(b)由于MEM对加载点附近的有限区域或长度进行了有限建模，因此分析所需的自由度比传统有限元法要小。(4)提出了基于分形分析的基础设施损伤评估方法。(5)建立了考虑复合材料和薄板杨氏模量影响的玻璃钢薄板粘结模型。(6)研制了可渗透至混凝土表面40mm深处的表面保护剂。少

The following conclusions can be drawn.(1)A model for evaluating life cycle cost of pavements considering winter road traffic situation was proposed. An algorithm for the model which was developed by applying the sensitivity analysis of the probit stochastic user equilibrium (PSUE) was also proposed. Drivers' route choice behavior induced by deterioration of surface condition of pavements, change in traffic capacities brought by repair works in summer, and change in traffic capacities brought by antifreezing admixture dispersion in winter was endogenously expressed in the model. As a result, a plan for repair works and dispersion of antifreezing admixture which minimizes the life cycle cost by taking above mentioned driviers' behavior into account was obtained by carrying out a numerical experiment.(2)The integrated database combining the data of varieties, such as the road surface condition, the drive condition, the weather information and so on was created. As a case study using this … More database, the research solved the relation between the road surface condition and the drive condition in winter, and showed that the useful information to the traffic administrator and the road user could be created. This result showed the validity of the anti-freezing agent in the case of many, and clarified further the conditions on which that effect fades.(3)A calculation example of 2 dimensional Moving Element Method (MEM) with a vehicle model was introduced and it is verified that an interactive behavior between a vehicle and plate can be successfully analyzed by this method. The developed MEM has following advantages against conventional time-domain FEM for continuous structure under the loading due to a moving vehicle, (a) MEM can fix the loading position in the model regardless of time elapsingwhereas FEM needs large model corresponding to the moving range of the vehicle, (b) Since limited area or length near the loading point is finitely modeled for MEM, the degrees of freedom required for the analysis become smaller than those for a conventional FEM.(4)Damage evaluation method for infrastructure based on fractal analysis was developed.(5)A bond model for FRP sheet which can consider the influence of Young's modulus of resign and sheet was developed.(6)Surface protective agent which can penetrate into 40 mm depth from concrete surface was developed. Less