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圆钢管-石膏-废弃混凝土块组合柱轴压性能试验研
作者：袁周率1，祝鑫1，黄海燕2，吴冬雁1，赵俊亮1
（1.温州大学 建筑工程学院，浙江 温州 325035；2.浙江大学 建筑工程学院，浙江 杭州 310063）
摘要：提出一种适用于抢险救灾用的临时构件，通过在钢管内部填充石膏浆和废弃混凝土块，形成一种圆钢管-石膏-废弃混凝土块组合柱，具有早强、快硬和承载力高的特点。对圆钢管-石膏-废弃混凝土块组合柱的轴压性能进行了试验研究，参数包括钢管厚度和是否掺加废弃混凝土块。结果表明，圆钢管-石膏-废弃混凝土块组合柱具有很高的承载力，且承载力随钢管厚度增加而提高；当内部填充纯石膏浆时，构件承载力较高，但变形能力较差；当内部同时填充石膏浆和废弃混凝土块时，构件承载力略微降低，但变形能力大大提高。
关键词：钢管-石膏-废弃混凝土块组合柱；承载力；应力应变关系
中图分类号：TU392.3 文献标识码：A 文章编号：1001-702X（2019）06-0019-03
Axial compression test of circular steel tubes filled with demolished concrete lumps and gypsum paste
YUAN Zhoulv1，ZHU Xin1，HUANG Haiyan2，WU Dongyan1，ZHAO Junliang1
（1.College of Civil Engineering and Architecture，Wenzhou University，Wenzhou 325035，China；
2.College of Civil Engineering and Architecture，Zhejiang University，Hangzhou 310063，China）
Abstract：This paper proposed a new member form which is suitable for temporary rescue usage，i.e. circular steel tube filled with demolished concrete lumps and gypsum paste. This column has some advantages such as fast hardening，high early strength and good load capacity. This paper investigates the axial compressive behavior of circular steel tubes filled with demolished concrete lumps and gypsum paste. The parameters investigated include the thickness of steel tube and the amount of demolished concrete lumps adopted. The findings of the current study include：the proposed column possesses high load capacity as expected and improves with the increasing of tube thickness; when the steel tube is filled with pure gypsum paste，the strength of the column may be higher than those filled with both demolished concrete lumps and gypsum paste，while the deformation capacity is much lower than the latter.
Key words：steel tube filled with demolished concrete lumps and gypsum paste，load capacity，stress strain behavior