路堑边坡滑坍分析与处理

针对长需高速公路１２Ａ标段的几处路堑边坡滑坍现象，分析了其边坡土质，雨雪及地下水的影响，边坡的几何形状等原因，介绍了路堑边坡滑坍的防治办法，并结合工程实例，提出了以卸载调坡减滑为主，辅以排除地有水，增设挡水墙抗滑结结构和折综合治理方案，效果较好。     

改性沥青抗滑表层的应用研究

结合我国南方多雨潮湿地区改性沥青抗滑表层的应用情况,并依托工程实际,提出了符合我国现行规范中AC-13型矿料级配要求范围且适用于改性沥青抗滑表层的矿料级配设计范围,同时针对改性沥青抗滑表层抗水损害能力和表面构造深度的要求,提出了矿料级配设计的基本思路和与之相适应的施工工艺.     

盘海高速公路改性沥青AK—16A型抗滑表层的施工

详细介绍了AK—16A型抗滑表层施工过程中目标配合比、生产配合比的控制方法以及试拌试铺过程中混合料的拌和、运输、摊捕和碾压等序质量控制的关键措施。     

船舶下水的动力,力不参数测试与分析

以实测结果为例，对船舶纵向重力式下水的船首动态压力变化和船舶运动参数进行了综合分析。研究了在建船舶吨位超过船台设计能力的下水安全性问题。     

低噪音高抗滑露石水泥砼路面技术

针对露石水泥砼路面的抗滑性能进行研究.采用室内试验:对3种不同级配的粗集料,每种级配又分别采用3种不同的砂率进行试配成型并进行表面露石工艺处理,在考虑水泥砼和易性及强度的同时综合露石水泥砼成型块表面的抗滑性能,确定露石水泥砼施工工艺的最优粗集料级配和砂率.结果表明,集料的合理级配对露石水泥工艺处理的路表粗糙均匀程度和路表的抗滑性能有着积极意义,露石水泥砼路面具有良好的路用性能.     

Phase Behaviors in Bi-phase Simulation of Powder Segregation in Metal Injection Molding

Powder segregation induced by mold filling is an important phenomenon that affects the final quality of metal injection molding （MIM）. The prediction of segregation in MIM requires a bi-phase flow model to describe distinctly the flows of metallic powder and polymer binder. Viscous behaviors for the flows of each phase should hence be determined. The coefficient of interaction between the flows of two phases should also be evaluated. However, only viscosity of the mixed feedstock is measurable by capillary tests. Wall sticking is supposed in the traditional model for capillary tests, while the wall slip is important to be taken into account in MIM injection. Objective of the present paper is to introduce the slip effect in bi-phase simulation, and search the suitable way to determine the viscous behaviors for each phase with the consideration of wall slip in capillary tests. Analytical and numerical methods were proposed to realize such a specific purpose. The proposed method is based on the mass conservation between the capillary flows in mono-phase model for the mixed feedstock and in bi-phase model for the flows of two phases. Examples of the bi-phase simulation in MIM were realized with the software developed by research team. The results show evident segregation, which is valuable for improving the mould designs.     

AC-25Ⅰ型级配沥青混合料的碾压工艺研究

AC-25Ⅰ型级配的设计原则即是紧密嵌挤骨架密实型结构组成。它完全可以解决沥青面层的抗滑性能和耐久性这一主要矛盾，同时平衡高、低温力学性能要求的差异，能够满足高速公路上面层，特别是寒冷地区上面层的使用性能的要求。     

AK13-I抗滑表层纤维沥青混合料水稳定性研究

用冻融劈裂试验，以冻融劈裂残留强度比(TSR)为技术指标评价不同纤维掺量的纤维沥青混合料AK13-I水稳定性，及分析影响混合料水稳定性因素。     

道路表面水膜厚度理论计算模型分析

汽车在雨天行驶时,摩擦系数的降低与路表水膜厚度有关,水膜厚度越厚,抗滑性能降低得越多,甚至发生滑水现象.文章建立了基于坡面径流理论的路表水膜厚度的理论模型,推导出基本微分方程,并与英国的经验公式进行对比,能够反映出各因素对水膜厚度的影响.     

江苏省交通科学研究院首创上面层掺木质素温拌OGFC结构

江苏省交通科学研究院在近日建成通车的瑞赣高速公路创新性地采用了掺木质素温拌SBS改性沥青OGFC-13结构作为上面层,为国内首次。采用这种上面层结构可以降低行车噪声,提高路面抗滑性能,提高路面行车的安全性和舒适性。