An index system of steel deck pavement design is proposed according to the study and classification of failure types. Furthermore the axle-equivalent equation is presented according to the fatigue principle of pavemen...An index system of steel deck pavement design is proposed according to the study and classification of failure types. Furthermore the axle-equivalent equation is presented according to the fatigue principle of pavement structures. Based on indoor experiments and theoretical analysis, this paper studies the stress characteristics of three different axle types which are corresponding with the other three typical pavement structures, and also presents the parameters of each axle＇s equivalent formula. The three axle types include single-axle single-wheel, single-axle double-wheel and double-axle double-wheel. According to analyses of influential factors such as climate, environment, traffic and stress condition, the developed axle equivalent formula and the parameters modified by the field test data can be applied in the design of a new bridge deck pavement and the assessment of an existing bridge deck pavement.展开更多
为解决电网峰谷差持续扩大带来的影响,从用户侧角度出发,针对空调房间、电热水器和电动汽车分别提出了柔性负荷优化控制算法。该算法基于分时电价,同时考虑用户经济效益和舒适度进行双目标优化控制,并通过智能用户终端实现。在算法中,...为解决电网峰谷差持续扩大带来的影响,从用户侧角度出发,针对空调房间、电热水器和电动汽车分别提出了柔性负荷优化控制算法。该算法基于分时电价,同时考虑用户经济效益和舒适度进行双目标优化控制,并通过智能用户终端实现。在算法中,改进了传统的空调房间和热水器负荷模型,将复杂的多变量强耦合过程解耦为多个独立的单变量子过程,并采用参数回归获取模型参数,减少算法中的随机变量。其次,将电动汽车纳入优化控制,分别研究了单向充电电动汽车(grid to vehicle,G2V)和双向供电电动汽车(vehicle to grid,V2G)的优化算法。采用粒子群算法分别求解优化结果。基于MATLAB的仿真结果验证了所提算法在经济利益、用户体验和电网削峰填谷方面上的优势。展开更多
基金The National Natural Science Foundation of China(No.50578038)the Ph.D. Programs Foundation of Ministry of Ed-ucation of China (No.20050286008)Runyang Yangtze River High-way Bridge Technology Study for Steel-Deck Pavement.
文摘An index system of steel deck pavement design is proposed according to the study and classification of failure types. Furthermore the axle-equivalent equation is presented according to the fatigue principle of pavement structures. Based on indoor experiments and theoretical analysis, this paper studies the stress characteristics of three different axle types which are corresponding with the other three typical pavement structures, and also presents the parameters of each axle＇s equivalent formula. The three axle types include single-axle single-wheel, single-axle double-wheel and double-axle double-wheel. According to analyses of influential factors such as climate, environment, traffic and stress condition, the developed axle equivalent formula and the parameters modified by the field test data can be applied in the design of a new bridge deck pavement and the assessment of an existing bridge deck pavement.
文摘为解决电网峰谷差持续扩大带来的影响,从用户侧角度出发,针对空调房间、电热水器和电动汽车分别提出了柔性负荷优化控制算法。该算法基于分时电价,同时考虑用户经济效益和舒适度进行双目标优化控制,并通过智能用户终端实现。在算法中,改进了传统的空调房间和热水器负荷模型,将复杂的多变量强耦合过程解耦为多个独立的单变量子过程,并采用参数回归获取模型参数,减少算法中的随机变量。其次,将电动汽车纳入优化控制,分别研究了单向充电电动汽车(grid to vehicle,G2V)和双向供电电动汽车(vehicle to grid,V2G)的优化算法。采用粒子群算法分别求解优化结果。基于MATLAB的仿真结果验证了所提算法在经济利益、用户体验和电网削峰填谷方面上的优势。
