公路下穿通道的封闭引道最大无缝长度研究  

Study on Maximum Seamless Length of Closed Channels of Highway Underpass

作　　者：展望 王成军 魏东旭 张珂 魏巍 ZHAN Wang;WANG Chengjun;WEI Dongxu;ZHANG Ke;WEI Wei(Shandong Highway Bridge Maintenance Co.,Ltd.,Jinan 250032,China;Shandong Provincial Communications Planning and Design Institute,Jinan 250031,China)

机构地区：[1]山东省高速路桥养护有限公司,济南250032 [2]山东省交通规划设计院,济南250031

出　　处：《路基工程》2018年第A01期72-76,80,共6页Subgrade Engineering

摘　　要：以济南某公路立交下穿通道工程为例,运用高性能混凝土无缝设计理念来指导公路立交被交叉公路下穿通道的封闭引道设计。结果表明,不均匀沉降和车载的作用不会引起封闭引道的破坏,其破坏主要与温度应力有关。在地基不均匀沉降、车辆荷载和温度荷载共同作用下,墙体的最大无缝长度最短,其值为40. 6 m。Taking the crossing underpass of highway in Jinan as an example,the concept of high performance concrete seamless design is used to guide the design of the closed channel of highway interchange under cross-highway crossing.The results show that the non-uniform settlement and vehicle-mounted action do not cause the damage of the closed channel and the damage is mainly related to the temperature stress.Under the joint action of uneven ground settlement,vehicle load and temperature load,the maximum seamless length of the wall is the shortest with value of 40.6 m.

关 键 词：封闭引道工程 高性能混凝土 温度应力 最大长度 无缝 

分 类 号：TU528.31[建筑科学—建筑技术科学]