桥梁箱体结构自调温固液相变材料的机理  

Mechanism of Self-adjusting Solid-liquid Phase Change Material of Bridge Box Structure

作　　者：丁鹏[1] 滕钢 刘建春 陈东涛 赵亚宇 DING Peng;TENG Gang;LIU Jian-chun;CHEN Dong-tao;ZHAO Ya-yu(School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Zhongwan Expressway Co.LTD,Chongqing 400020,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]重庆忠万高速公路有限公司,重庆400020

出　　处：《科学技术与工程》2018年第9期310-317,共8页Science Technology and Engineering

基　　金：国家重点研发计划(2017YFC0806007);国家杰出青年科学基金(51425801);国家自然科学基金(51479013);重庆科技人才培养计划(cstc2014kjrc-qnrc30001)资助

摘　　要：在已有的相变材料及相变理论研究分析的基础上,提出了一种适用于桥梁箱体结构"自调温"的石蜡-稻壳灰相变储能混凝土新型材料。通过研究该新型材料对混凝土温升过程中的影响规律,提出了相变储能稻壳灰混凝土吸热温升估算公式。进一步地,通过对普通混凝土与相变储能混凝土箱体结构温度场数值模拟及对比,分析了其在混凝土箱体结构中的"自调温"效用。Based on the analysis of existing phase change materials and phase transition theory,a new kind of paraffin waxy ash-phase change energy storage concrete that suitable for self-adjusting temperature of bridge box structure was presented.By studying the influence of the new material on the temperature rise process of the concrete,and the phase change energy storage of the rice husk ash concrete thermal temperature rise estimation formula was presented.Furthermore,through the numerical simulation and comparison of the temperature field of ordinary concrete and phase change energy storage concrete box structure,the self-adjusting temperature effect in the concrete box structure is analyzed.

关 键 词：箱体结构 自调温 相变储能 温差应力 

分 类 号：TU528.01[建筑科学—建筑技术科学]