聚氨酯填充薄壁圆钢管轴压力学性能  

Mechanical properties of thin-wall circular steel tube filled with polyurethane foam under axial loads

作　　者：王甜甜 于振鲁[3] 李俊睿 吴勋 支旭东 Wang Tiantian;Yu Zhenlu;Li Junrui;Wu Xun;Zhi Xudong(School of Civil Engineering, Harbin Institute of Technology, Harbin 150090;Key Laboratory of Ministry of Industry and Information for Intellectual Disaster Prevention and Mitigation of Civil Engineering, Harbin Institute of Technology, Harbin 150090;School of Civil Engineering Dalian University, Dalian 116000;School of Civil Engineering, Northeastern University, Shenyang 110000)

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090 [2]哈尔滨工业大学土木工程智能防灾减灾工信部重点实验室,哈尔滨150090 [3]大连理工大学土木工程学院,大连116000 [4]东北大学土木工程学院,沈阳110000

出　　处：《工程建设》2018年第6期6-10,共5页Engineering Construction

基　　金：国家自然科学基金项目(51478144);2017年春季学期大学生创新创业训练计划(国家级);2016年大学生创新创业训练计划(校级)

摘　　要：研究聚氨酯填充薄壁圆钢管轴压力学性能,开展了短柱构件的轴向冲击试验和静力轴压试验,获得了空心圆钢管及聚氨酯填充薄壁圆钢管的变形模式,并对荷载-位移曲线、初始荷载峰值、平均压垮荷载、压垮力效率CFE等参数进行了分析。研究结果表明,聚氨酯的加入能够改善圆钢管在轴向力作用下的变形模式,提高了构件吸能能力,并缩短了同等耗能所需的时间。To investigate the mechanical properties of thin-wall circular steel tube filled with polyurethane foam under axial loads,the axial impact experiment and static axial compression experiments of short column components were carried out,and the deformation patterns of hollow round steel pipes and thin-wall circular steel tube filled with polyurethane foam were obtained,and such parameters as the load-displacement curves,the initial load peak value,the average crush load and the crush force efficiency etc. were analyzed. The results show that,the addition of polyurethane can improve the deformation pattern of circular steel tubes under axial load,improve its energy-absorption ability and shorten the time for the same energy consumption.

关 键 词：薄壁圆钢管 聚氨酯泡沫 复合构件 轴压 力学性能 

分 类 号：TU398.9[建筑科学—结构工程]