钢筋混凝土箱涵地基基础设计的几个问题探讨  

Several Problems in Foundation Design of Reinforced Concrete Box Culvert

作　　者：岳永利[1] 吴臻林 刘卫民[1] YUE Yongli;WU Zhenlin;LIU Weimin(CCCC First Highway Consultants Co.,Ltd.,Xi an 710075,China;Xi'an CCCC Highway Geotechnical Engineering Co.,Ltd.,Xi'an 710075,China)

机构地区：[1]中交第一公路勘察设计研究院有限公司,西安710075 [2]西安中交公路岩土工程有限责任公司,西安710075

出　　处：《路基工程》2018年第A01期6-8,14,共4页Subgrade Engineering

摘　　要：钢筋混凝土箱涵在公路、铁路工程中的数量庞大,但在地基基础设计过程中往往易走入误区,比如将地基强度(地基承载力)作为受控条件。对此,通过太沙基地基极限承载力表达式给出钢筋混凝土箱涵地基承载力的基本组成及数学解,论证了地基承载力不是钢筋混凝土箱涵地基基础设计的受控条件,该结论同样适用于采用整体式(对应于墙下条形基础)的其他类型涵洞。同时,介绍了钢筋混凝土箱涵地基基础设计需要考虑的其他要素。The amount of reinforced concrete box culverts are very large in highway and railway projects but is often go into erroneous zones in the process of foundation design,such as taking the foundation strength(foundation bearing capacity)as a controlled condition.Based on the Terzaghi foundation ultimate bearing capacity formula,the author gives the basic composition and mathematical solution of the bearing capacity of reinforced concrete box culverts and demonstrates that the bearing capacity of the culvert foundation of reinforced concrete frame is not a controlled condition for foundation design.This conclusion also applies to other types of culverts that use a raft foundation(difference to a strip foundation under the wall).The article also introduces other elements that need to be considered when designing the foundation of culverts.

关 键 词：钢筋混凝土箱涵 地基基础 地基承载力 地基沉降 地基耐久性 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]