盾构隧道钢混复合管片的力学性能试验（英文）  

Experiment on Mechanical Properties of Steel and Concrete Composite Segment for Shield Tunnel

作　　者：张稳军[1,2] 金明明[1,2] 苏忍[1,2] 张高乐[1,2] 孔恒 小泉淳[4] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]天津大学滨海土木工程结构与安全教育部重点实验室,天津300072 [3]北京市政建设集团有限责任公司,北京100048 [4]早稻田大学理工学术院

出　　处：《中国公路学报》2016年第5期84-94,共11页China Journal of Highway and Transport

基　　金：the support from National Natural Science Foundation of China(No.51378342);Ph.D.Program Foundation of the Ministry of Education of China(No.20120032120050)

摘　　要：针对盾构隧道钢混复合管片的力学性能,在已有10组试验和研究成果的基础上,新增4组钢混复合管片试件的纯弯曲加载模型试验,进一步考察了钢板厚度变化、剪力键及接头板对钢混复合管片承载能力和变形的影响,并将新增试验结果与已有试验结果进行了对比分析;同时根据以往的研究,提出了确定复合管片屈服荷载的双线性方法。对比分析结果表明:面板厚度对钢混复合管片变形和承载能力的影响最为显著;剪力键可以限制钢混复合管片的变形从而提高其承载能力;接头板在无剪力键时能起到剪力键的作用并显著提高复合管片的承载能力,而在有剪力键时对承载力没有影响。最后从新增的性能影响因素出发,对新增试验和原有试验结果中复合管片宽度和高度方向的应变分布规律进行了分析和补充。这14组试验结果可以较为全面地揭示盾构隧道钢混复合管片的力学机理。Targeting at the mechanical properties of steel and concrete composite segment for shield tunnel,4groups of model tests on steel and concrete composite segment under pure bending loading were added on the basis of existing 10 groups of tests and previous research results.The impacts of the thickness change of steel plates,headed shear studs and joint plates on the carrying capacity and deflection of composite segment were further studied,and the results from the new tests were compared with those existing results.Meanwhile,according to previous researches,a bilinear method was proposed to determine the yield load of composite segment.The results show that a）the thickness of skin plate has the most significant impact on the deflection and carrying capacity of composite segment;b）shear studs can effectively restrict the deformation of composite segment and improve its carrying capacity;c）joint plates acting as shear studs markedly improve the carrying capacity of composite segment without shear studs but don＇t affect the carrying capacity of which with shear studs.Finally,from the perspective of the newly added influencing factors on mechanical properties,the strain distribution laws along width and height direction of the composite segment in new tests and existing tests were analyzed and replenished.The testing results of the 14 groups give a comprehensive insight into the mechanism of steel and concrete composite segment for shield tunnel.

关 键 词：隧道工程 力学性能 模型试验 钢混复合管片 纯弯曲荷载 

分 类 号：TU227[建筑科学—建筑设计及理论]